Juniper Networks G10 CMTS · xii Juniper Networks G10 CMTS Installation and Configuration Appendix D, “Coaxial Cable Requirements” – Provides coaxial requirements for usage

Juniper Networks, Inc.

1194 North Mathilda Avenue

Sunnyvale, CA 94089

USA

408-745-2000

www.juniper.net

Part Number: 530-006433-01, Revision 2

Juniper NetworksG10 CMTS

Installation and Configuration

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ii

This product includes the Envoy SNMP Engine, developed by Epilogue Technology, an Integrated Systems Company. Copyright © 1986–1997, Epilogue Technology Corporation. All rights reserved. This program and its documentation were developed at private expense, and no part of them is in the public domain.

This product includes memory allocation software developed by Mark Moraes, copyright © 1988, 1989, 1993, University of Toronto.

This product includes FreeBSD software developed by the University of California, Berkeley, and its contributors. All of the documentation and software included in the 4.4BSD and 4.4BSD-Lite Releases is copyrighted by The Regents of the University of California. Copyright © 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994. The Regents of the University of California. All rights reserved.

GateD software copyright © 1995, The Regents of the University. All rights reserved. Gate Daemon was originated and developed through release 3.0 by Cornell University and its collaborators. Gated is based on Kirton’s EGP, UC Berkeley’s routing daemon (routed), and DCN’s HELLO routing protocol. Development of Gated has been supported in part by the National Science Foundation. Portions of the GateD software copyright © 1988, Regents of the University of California. All rights reserved. Portions of the GateD software copyright © 1991, D. L. S. Associates.

This product includes software developed by Maker Communications, Inc., Copyright © 1996, 1997, Maker Communications, Inc.

Juniper Networks is registered in the U.S. Patent and Trademark Office and in other countries as a trademark of Juniper Networks, Inc. G10, Internet Processor, Internet Processor II, JUNOS, JUNOScript, M5, M10, M20, M40, M40e, and M160 are trademarks of Juniper Networks, Inc. All other trademarks, service marks, registered trademarks, or registered service marks are the property of their respective owners. All specifications are subject to change without notice.

Juniper Networks G10 CMTS Installation and ConfigurationCopyright © 2002, Juniper Networks, Inc.All rights reserved. Printed in USA.

Writer: Jerry IsaacIllustrations: Paul GilmanCovers and template design: Edmonds Design

Revision History28 February 2002—Second edition.

The information in this document is current as of the date listed in the revision history.

Juniper Networks assumes no responsibility for any inaccuracies in this document. Juniper Networks reserves the right to change, modify, transfer or otherwise revise this publication without notice.

Products made or sold by Juniper Networks (including the G10 CMTS, M5 router, the M10 router, the M20 router, the M40 router, the M40e router, the M160 router, and the JUNOS software) or components thereof may be covered by one or more of the following patents which are owned by or licensed to Juniper Networks: U.S. Patent Nos. 5,473,599, 5,905,725, 5,909,440.

YEAR 2000 NOTICE

Juniper Networks hardware and software products are Year 2000 compliant. The JUNOS software has no known time-related limitations through the year 2038. However, the NTP application is known to have some difficulty in the year 2036.

Export Restrictions

The DOCSIS Module performs encryption that is subject to U.S. Customs and Export regulations. A DOCSIS Module shall not be exported, sold or transferred to a country outside the USA and Canada without an appropriate export license from the U.S. Government. The specific Regulations governing exports of encryption products are set forth in the Export Administration Regulations, 15 C.F.R. (Code of Federal Regulations), Parts 730-774.

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Table of Contents iii

Table of ContentsAbout This Manual

Purpose .................................................................................................................xiOrganization ..........................................................................................................xiDocument Conventions ........................................................................................xii

Notes, Cautions, and Warnings......................................................................xiiG10 CMTS Document Set.....................................................................................xiii

Chapter 1G10 CMTS Introduction ........................................................................................1

Overview ................................................................................................................1G10 CMTS Features and Functions .........................................................................2

Features and Benefits ......................................................................................2G10 CMTS Hardware Overview...............................................................................3

Chapter 2G10 CMTS Preparation for Installation .................................................... 11

Safety Precautions ................................................................................................11Notices..................................................................................................................14Tools and Equipment Required for Installation .....................................................14Verification of Shipping Cartons............................................................................15G10 CMTS Installation Checklist............................................................................16

Chapter 3G10 CMTS Installation ........................................................................................19

Grounding the Chassis ..........................................................................................19Rack Mounting......................................................................................................19Installing Power Supplies ......................................................................................25Installing a Power Transition Module ....................................................................29Installing a DOCSIS Module ..................................................................................31Installing an HFC Connector Module.....................................................................33Installing a Chassis Control Module.......................................................................35Installing a CCM Access Module............................................................................35Installing a NIC Module .........................................................................................36Installing a NIC Access Module .............................................................................37

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Juniper Networks G10 CMTS Installation and Configurationiv

Cabling an HFC Connector Module .......................................................................37Cabling the F-connector Ports........................................................................38

Cabling a Chassis Control Module .........................................................................43Cabling a NIC Module ...........................................................................................45Cabling a NIC Access Module................................................................................48Attaching a PC to the Chassis Control Module.......................................................51Connecting to Power Sources ...............................................................................52

AC Power ......................................................................................................52DC Power ......................................................................................................53

Chapter 4G10 CMTS Configuration ...................................................................................55

Powering On the G10 CMTS .................................................................................55Powering On and Configuring the PC ...................................................................61

Logging In and Out of the G10 CMTS.............................................................62Configuring the G10 CMTS....................................................................................62

Cable Interface Assignment...........................................................................63Creating Usernames and Passwords..............................................................63Configuring Miscellaneous Parameters ..........................................................64Viewing and Saving Running Configuration...................................................64Configuring Downstream Channel Parameters ..............................................64Configuring Upstream Channel Parameters...................................................65Configuring Fast Ethernet Interfaces .............................................................67Configuring a Management Interface.............................................................67

Chapter 5Upgrading the G10 CMTS ..................................................................................69

Removing Power Supplies ....................................................................................69Removing a DOCSIS Module.................................................................................71Removing an HFC Connector Module ...................................................................72Removing a Chassis Control Module.....................................................................73Removing a CCM Access Module ..........................................................................74Removing a NIC Module .......................................................................................75Removing a NIC Access Module............................................................................75Replacing a Fan Tray ............................................................................................76

Front Fan Trays .............................................................................................76Rear Fan Tray................................................................................................77

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Table of Contents v

Appendix AAgency Certifications..........................................................................................81

Appendix BHeadend Architecture .........................................................................................83

Appendix CRadio Frequency (RF) Specifications .......................................................85

Appendix DCoaxial Cable Requirements ..........................................................................89

Appendix EGBIC Interface Specifications .......................................................................91

IndexIndex...............................................................................................................................93

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Juniper Networks G10 CMTS Installation and Configurationvi

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List of Figures vii

List of FiguresList of Figures

Figure 1: Typical CMTS Location..........................................................................2Figure 2: Front View of Fully-Configured Chassis.................................................4Figure 3: Front View of Partially-Configured Chassis............................................5Figure 4: Rear View of Fully-Configured Chassis ..................................................6Figure 5: Rear View of Partially-Configured Chassis.............................................7Figure 6: Top View of Chassis Midplane ..............................................................8Figure 7: Air Flow Through Chassis....................................................................21Figure 8: Bottom of Chassis ...............................................................................22Figure 9: Lifting the Chassis...............................................................................23Figure 10: Rack-Mounted Chassis ........................................................................24Figure 11: Rack Fully Populated with Three G10 CMTS Chassis ...........................25Figure 12: Front and Rear Views of Midplane ......................................................27Figure 13: Power Supply Installation ...................................................................28Figure 14: Power Transition Module Installation..................................................30Figure 15: Air Management Module Removal ......................................................32Figure 16: DOCSIS Module Installation ................................................................33Figure 17: HFC Connector Module Installation ....................................................34Figure 18: Example of Allocation of Multiple Channels Per Port ..........................38Figure 19: HFC Connector Module Rear Panel .....................................................40Figure 20: Rear Coaxial Cable Connections ........................................................42Figure 21: Chassis Control Module and CCM Access Module Panels ....................44Figure 22: NIC Module and NIC Access Module Panels ........................................46Figure 23: NIC Module Cabling – Front View .......................................................47Figure 24: NIC Access Module Cable Connections ...............................................50Figure 25: AC Power Cord and Retainer Clip .......................................................53Figure 26: DC Power Transition Module ..............................................................54Figure 27: DOCSIS Module Front Panel ...............................................................58Figure 28: Chassis Control Module Front Panel....................................................60Figure 29: Power Supply Removal ......................................................................70Figure 30: DOCSIS Module Removal ...................................................................72Figure 31: HFC Connector Module Removal .......................................................73Figure 32: Front Fan Tray Replacement .............................................................78Figure 33: Rear Fan Tray Replacement ...............................................................79

List of Figures

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Juniper Networks G10 CMTS Installation and Configurationviii

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List of Tables ix

List of TablesList of Tables

Table 1: G10 CMTS Installation Checklist..........................................................16Table 2: NIC Access Module Wiring Plan Example ...........................................51Table 3: Power Supply LEDs.............................................................................56Table 4: DOCSIS Module LED Status.................................................................57Table 5: Chassis Control Module LED Status.....................................................59Table 6: NIC Module LED Status .......................................................................61Table 7: NIC Access Module LED Status............................................................61Table 8: Cable Interface to Downstream Channel and Port Association............63Table 9: Default Cable Interface to Upstream Channel Association...................63Table 10: Downstream Channel Parameter Ranges............................................65Table 11: Upstream Channel Parameter Ranges.................................................66Table 12: Downstream RF Channel Transmission Characteristics ......................85Table 13: Upstream RF Channel Transmission Characteristics ...........................86Table 14: Downstream RF Signal Output Characteristics ....................................86Table 15: DOCSIS Downstream Channel Rates and Spacing ..............................87Table 16: DOCSIS Maximum Upstream Channel Rates and Widths....................87Table 17: Coaxial Cable Requirements ...............................................................89Table 18: Single Mode, Long Range GBIC Specifications.....................................91Table 19: Single Mode, Midrange GBIC Specifications ........................................91Table 20: Multi Mode GBIC Specifications...........................................................92Table 21: Copper GBIC Specifications.................................................................92

List of Tables

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Juniper Networks G10 CMTS Installation and Configurationx

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About This Manual xi

About This Manual

This section describes important information about the design of this document.

Purpose

The purpose of this document, Juniper Networks G10 CMTS Installation and Configuration, is to provide the procedures, along with the appropriate cautions and warnings, required to properly install and configure the G10 Cable Modem Termination System (CMTS).

The information presented herein is primarily intended for personnel who are involved with the initial installation of the G10 CMTS. Additional instructions and details regarding the subsequent and on-going operation of the CMTS can be found in the documents listed in “G10 CMTS Document Set” on page xiii.

Organization

Juniper Networks G10 CMTS Installation and Configuration is organized as follows:

Chapter 1, “G10 CMTS Introduction” – Provides a G10 CMTS functional and hardware overview.

Chapter 2, “G10 CMTS Preparation for Installation” – Provides the procedures that must be followed in preparation for the installation of the G10 CMTS in the headend.

Chapter 3, “G10 CMTS Installation” – Describes the complete installation procedure for the G10 CMTS.

Chapter 4, “G10 CMTS Configuration” – Describes the complete configuration procedure for the G10 CMTS.

Chapter 5, “Upgrading the G10 CMTS” – Provides the procedures required to upgrade all hardware components of the G10 CMTS.

Appendix A, “Agency Certifications” – Listing of government agency certifications and approvals.

Appendix B, “Headend Architecture” – Provides an illustration of a typical cable headend architecture.

Appendix C, “Radio Frequency (RF) Specifications” – Provides DOCSIS RF specifications for reference purposes.

Document Conventions

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Juniper Networks G10 CMTS Installation and Configurationxii

Appendix D, “Coaxial Cable Requirements” – Provides coaxial requirements for usage with the HFC Connector Modules.

Appendix E, “GBIC Interface Specifications” – Provides the specifications for the various GBIC interfaces.

Document Conventions

The following document conventions are used in this manual:

Notes, Cautions, and Warnings

GeneralConventions

Italic font Denotes a) emphasis, b) first use of a new term, or c) a document title.

Screen Name font Denotes a) the on-screen name of a window, dialog box or field, or b) keys on a keyboard.

Software Conventions

Computer font Font denotes code or messages displayed on-screen.

Computer Bold font Font denotes literal commands and parameters that you enter exactly as shown.

<Computer Italic> font Font denotes parameter values that require a user-defined input.

The value strings are enclosed in angle brackets <...>.

[parameter] Square brackets denote optional parameters.

{parameter} Braces denote required parameters.

| Vertical bars separate parameters in a group from which you must choose only one.

↵ Return symbol indicates pressing the Enter key at the end of a command line.

A note indicates information that might be helpful in a particular situation, or information that might otherwise be overlooked.

A caution indicates a situation that requires careful attention. Failure to observe a cautionary note could result in injury or discomfort to yourself, or serious damage to the product.

A warning is intended to alert the user of the presence of uninsulated dangerous voltage within the product’s enclosure that may present a risk of electric shock.

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About This Manual xiii

G10 CMTS Document Set


Pre-InstallationGuide

Installation andConfiguration

Getting Started FunctionalDescription

SNMP and Enterprise MIBSpecification

PREPARATION OPERATION REFERENCE

Operation andMaintenance

CLI Reference

530-006434-01

530-006437-01

530-006461-01530-006435-01530-006433-01

530-006459-01530-006436-01


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Juniper Networks G10 CMTS Installation and Configurationxiv

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1

Chapter 1G10 CMTS Introduction

Overview

This chapter provides an introduction to the G10 Cable Modem Termination System (CMTS).

The G10 CMTS manages Internet data, voice and MPEG services. It functions as the interface between the services networks—Internet, Public Switched Telephone Network (PSTN), video servers—and the hybrid fiber/coax (HFC) network of subscribers, as shown in Figure 1 on page 2. This is the “last mile” of broadband service, with the CMTS typically located in the cable headend or distribution hub. It is targeted at the following data and voice aggregation applications:

Large CATV Hub Sites — DOCSIS multi-service, residential and commercial IP network access over HFC networks maintained by cable television (CATV) multiple service operators (MSOs) needing enhanced integrated data, voice and video in large metropolitan areas.

Small CATV Hub Sites — Smaller hub sites aggregated over metropolitan fiber rings supporting Gigabit Ethernet.

G10 CMTS Features and Functions

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Juniper Networks G10 CMTS Installation and Configuration2

Figure 1: Typical CMTS Location

G10 CMTS Features and Functions

The G10 CMTS provides true multi-services support, including the ability to simultaneously support DOCSIS IP services, VoIP services, and native MPEG transport streams.

Features and Benefits

Innovative features of the G10 CMTS include:

Scalable, high-density chassis that supports from one to eight DOCSIS modules. Each module can be configured for up to four downstream channels at 64 and 256 QAM, and up to 8 upstream channels at QPSK and 16 QAM. This provides a total system capacity of up to 32 downstream channels and 64 upstream channels.

Scaleable and high-density architecture that supports 16,000 service flows per DOCSIS module, up to 128,000 per chassis.

Logical allocation of up to 8 upstream channels to any of the four upstream ports on each DOCSIS Module. This allows channels to be provisioned by the Command Line Interface (CLI), SNMP commands, or a Network Management System without the need for physical node recombining.

Advanced upstream scheduling and a queuing algorithm that efficiently allocates resources to satisfy multiple service flows with the most stringent Quality of Service requirements (Class of Service for DOCSIS 1.0). Per-flow QoS with Diff-Serv ensures end-to-end management of Service Level Agreements (SLAs).

Cable Headendor

Distribution HubInternet

Backbone

PSTN

Servers

NetworkManagement

Switch/Router CMTS

Subscribers

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G10 CMTS Hardware Overview

3

The G10 CMTS delivers the following benefits:

DOCSIS services – DOCSIS 1.0 and EuroDOCSIS 1.0 RF interfaces and protocols

Industry-leading RF performance – Signal-to-Noise Ratio (SNR) performance, efficiency, and configuration flexibility

Advanced diagnostics – spectrum monitoring, historical data

Quality-of-Service – Advanced DOCSIS scheduler for Voice-Over-IP and other applications

Standard network interfaces – Fast Ethernet, Gigabit Ethernet

Line-rate performance

Management interfaces – CLI, Telnet, SNMP, DOCSIS 1.0 MIBs (Management Information Base)

The G10 CMTS is compliant with the following industry specifications:

DOCSIS 1.0

EuroDOCSIS 1.0


This section provides an overview of the modules and various hardware components of the G10 CMTS, and where they reside within the chassis. This overview presents material that is specific to the installation and configuration of the G10 CMTS. For more details and specifications regarding these assemblies, refer to the Juniper Networks G10 CMTS Functional Description.

Figure 2 on page 4 illustrates a front view of a fully-configured chassis. Figure 3 on page 5 illustrates a front view of a partially-configured chassis in which DOCSIS Modules, a Chassis Control Module (CCM), a Network Interface Card (NIC) Module, power supplies, air management modules, and power supply filler panels have been removed. Figure 4 on page 6 illustrates a rear view of a fully-configured chassis. Figure 5 on page 7 illustrates the rear view of the partially-configured chassis in which HFC Connector Modules, a CCM Access Module, a NIC Access Module, and air management panels have been removed. Figure 6 on page 8 provides a top view of the chassis midplane showing the slot enumeration and location of each module.

All of the features of the chassis that are cited in these figures will be referenced in one or more procedures described in this document.


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Figure 2: Front View of Fully-Configured Chassis

Power

FaultPower

FaultPower

FaultPower

FaultPower

Fault

Power

FaultPower

FaultPower

Fault

Front FanTray LED

ESDStrapJack

AirIntake

Eth0

12

Eth0

12

Front FanTray LED

DOCSISModule

NICModule

ChassisControlModule

CableGuide

PowerSupplyEjector

Rail

ModuleEjector

Rail

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5

Figure 3: Front View of Partially-Configured Chassis

Power

Fault

Power

Fault

Power

Fault

Power

Fault

Power

Fault

Power

Fault

Power

Fault

Power

Fault

ESDStrapJack

PowerSupplyBay

PowerSupplyFillerPanel

PowerSupply

Midplane

AirManagement

Module

PowerSupply

Faceplate

CardGuide

AirIntake

Faceplate


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Figure 4: Rear View of Fully-Configured Chassis

Eth0

Eth1

US 3

US 2

US 1

US 0

DS 3

DS 2

DS 1

DS 0

Eth0

Eth1

US 3

US 2

US 1

US 0

DS 3

DS 2

DS 1

DS 0

Eth0

Eth1

US 3

US 2

US 1

US 0

DS 3

DS 2

DS 1

DS 0

Eth0

Eth1

US 3

US 2

US 1

US 0

DS 3

DS 2

DS 1

DS 0

EX

T FA

ULT

INT

FAU

LTO

PE

RA

TIO

NA

LP

OW

ER

EX

T FA

ULT

INT

FAU

LTO

PE

RA

TIO

NA

LP

OW

ER

KBD

MOUSE

RESET

FD HD

COM2

COM1

Eth0

Et h1

KBD

MOUSE

RESET

FD HD

Eth0

Et h 1

COM2

COM1

US 3

US 2

US 1

US 0

DS 3

DS 2

DS 1

DS 0

Eth1

Eth0

Eth1

US 3

US 2

US 1

US 0

DS 3

DS 2

DS 1

DS 0

Eth1

US 3

US 2

US 1

US 0

DS 3

DS 2

DS 1

DS 0

Eth0

Eth0

1

2

Eth1

US 3

US 2

US 1

US

DS 3

DS 2

DS 1

DS 0

Eth0

0

1

2

1

2

Rear Fan Tray

Cable Channel

AC PowerReceptacle

AC PowerTransitionModule

AC PowerSwitch

Air Exhaust

Rear FanTray LED

ChassisGround

Nuts

AirIntake

HFCConnector

Module

CCMAccessModule

NICAccessModule

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Figure 5: Rear View of Partially-Configured Chassis

KBD

MOUSE

RESET

FD HD

Eth0

Eth1

COM2

COM1

Eth0

Eth1

US 3

US 2

US 1

US 0

DS 3

DS 2

DS 1

DS 0

EX

T FA

ULT

INT

FAU

LTO

PE

RA

TIO

NA

LP

OW

ER

1

2

Eth0

Eth1

US 3

US 2

US 1

US 0

DS 3

DS 2

DS 1

DS 0

AirManagement

Panel


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Figure 6: Top View of Chassis Midplane

Following is a brief explanation of each feature referenced in Figure 2 through Figure 5:

DOCSIS Module—Module that contains the Broadband Cable Processor and resides between the Network Side Interface (NSI) and the Hybrid Fiber/Coax (HFC) interface

NIC Module—Module that provides the Gigabit Ethernet interface and the Ethernet switching functions for the network side interface

Chassis Control Module—Module that performs management and monitoring functions

DOCSIS Module

DOCSIS Module

DOCSIS Module

DOCSIS Module

DOCSIS Module

DOCSIS Module

DOCSIS Module

DOCSIS Module

NIC Module

Chassis Control Module

Chassis Control Module

HFC Connector Module








Midplane

Fro

ntR

ear

NIC Access Module 5

6

4

3

2

1

7

8

9

10

11

12

13

with logical slot numbers

NIC Module

NIC Access Module

CCM Access Module

CCM Access Module

Module slots 1 through 6 reside in power supply Domain A. Module slots 7, and 9 through 13 reside in power supply Domain B.

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Module Ejector Rail—Rail into which a module’s ejector tabs mate when a module is installed into a slot

ESD Strap Jack—Location in front of chassis where ESD ground strap can be plugged

Chassis Ground Nuts—Location where the earth ground connection to the chassis is made

Air Intake—Slotted openings along the front (removable) and sides of the chassis where air is drawn into the chassis for cooling the installed modules and power supplies

Air Intake Faceplate—Slotted removable panel that covers up the two front fan trays

Air Intake Faceplate Bracket—Bracket used to mount the air intake faceplate

Front Fan Tray—Fan assembly that forces air upward through the front of the chassis

Front Fan Tray LED—LED that represents the status of the front fan tray

Power Supply Ejector Rail—Rail into which the power supply ejector tabs mate when a power supply is installed into a bay

Midplane—Passive electrical interconnecting device for all modules in the chassis

Air Management Module—Module that is installed into an unused module slot to redirect the air flow through the chassis

Card Guide—Used to align a module or power supply while it is being inserted into its slot or bay, respectively

Power Supply—Converts AC or DC power supplied through the power transition modules into the DC voltages required by the modules

Power Supply Faceplate—Panel that runs along the top of the chassis that covers up the power supplies

Power Supply Faceplate Bracket—Bracket used to mount the power supply faceplate

Power Supply Bay—Chassis bay in which a single hot-swappable power supply is inserted

Power Supply Filler Panel—Panel covering an empty power supply bay

Cable Channel—Channel that runs through the top of the chassis that is used to route the network cables from the rear of the chassis to the front of the chassis

Cable Guide—Guide in the front of the chassis used to route the network cables between the cable channel and the lower opening in the power supply faceplate

HFC Connector Module—Module that functions as the DOCSIS Module’s physical access to both the NSI and the HFC interfaces on the rear of the chassis

NIC Access Module—Module that provides the network connections between the NIC Modules and the HFC Connector Modules

CCM Access Module—Module that provides Ethernet and serial connector access to the Chassis Control Module from the rear of the chassis


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Rear Fan Tray—Fan assembly that forces air upward through the rear of the chassis

Rear Fan Tray LED—LED that represents the status of the rear fan tray

Air Management Panel—Panel that is installed over an unused module slot to redirect the air flow through the chassis

Air Exhaust—Panel along the top and rear of the chassis where air is exhausted out of the chassis for cooling purposes

AC Power Transition Module—Rear module that distributes the externally-supplied AC power to the midplane

AC Power Receptacle—AC power cord receptacle on AC Power Transition Module

AC Power Switch—AC power ON/OFF switch that resides on the AC Power Transition Module

DC Power Transition Module—Rear module that distributes the externally-supplied DC power to the midplane

DC Power Receptacle—DC power cord terminal block on DC Power Transition Module

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11

Chapter 2G10 CMTS Preparation for Installation

This chapter provides the procedures that must be followed in preparation for the installation of the G10 CMTS in the headend.

The installation procedures described in Juniper Networks G10 CMTS Installation and Configuration assume that the procedures and the checklist provided in the Juniper Networks G10 CMTS Pre-Installation Guide have been successfully completed and approved by the user and Juniper Networks field engineers.

All of the steps required to successfully install the G10 CMTS are summarized at the end of this chapter in Table 1 on page 16.

Safety Precautions

Only trained and certified personnel should be involved in the installation of the CMTS.

Do not attempt to lift the G10 CMTS alone. It is recommended that at least three installers assist with lifting the system. This includes removal from the shipping carton, temporary or permanent placement on a flat surface, rack mounting, or lifting for any other purpose.

Prior to lifting and moving the G10 CMTS, ensure that the path you will be taking is totally unobstructed.

To avoid back injury when lifting the G10 CMTS, avoid bending your back to achieve lift leverage. Instead, keep your back in the upright position, and bend at the knees. Also avoid twisting your back while lifting.

Always rack mount a system from the bottom up to maintain the lowest possible center of gravity of the entire rack with its equipment.

Do not install any additional modules or power supplies to the G10 CMTS prior to mounting it in a rack. First mount the system into the rack with its original contents as shipped from Juniper Networks, then install additional components after the G10 CMTS is securely mounted to its rack.

During the preparation and installation of the G10 CMTS, it is very important to adhere to the precautions presented in this section to avoid physical injury due to lifting, moving, or rack mounting the CMTS.

Safety Precautions

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Never attempt to move the G10 CMTS while any cables or power cords are still connected.

Ensure that any loose articles of clothing are well clear of the fan trays prior to powering up the G10 CMTS.

It is recommended that at least two installers be present when connecting the G10 CMTS to its power source.

Remove all jewelry that can act as a conductor of electricity such as watches, rings, bracelets, and necklaces.

Prior to making any power connections, locate the emergency power-off switch and ensure that the path between where the G10 CMTS will be installed and the power-off switch is unobstructed.

Prior to making any power connections, survey the immediate area to ensure that no additional electrical safety hazards exist (such as ungrounded equipment or power cords, or damp, moist areas that could conduct electricity).

Ensure that the power supply switches on the rear of the G10 CMTS are in the OFF (O) position prior to connecting any power cords.

Use only the AC power cords that are supplied by Juniper Networks. These cords are grounded and appropriately rated for the G10 CMTS.

Use the supplied DC power cord ring lugs and 10 AWG wire for the DC power cord connection to the G10 CMTS.

Attach all power cords to their appropriate terminals (AC or DC) in the rear of the G10 CMTS prior to plugging any power cord into its respective power source (AC or DC).

Never apply excessive force when attaching a power cord to a terminal or power source if it does not readily mate with ease. Having to apply an unusual amount of force may indicate that electrical leads are bent and damaged, or that an improper connection is being attempted.

During the preparation and installation of the G10 CMTS, it is very important to adhere to the precautions presented in this section to avoid physical injury due to an electrical hazard.

High levels of electrical energy are distributed across the system midplane. Be careful not to contact the midplane connectors, or any component connected to the midplane, with any metallic object while hot-swapping or servicing components installed in the system.

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Safety Precautions

13

Ensure that the G10 CMTS chassis is properly grounded to earth prior to connecting any source of power. Refer to “Grounding the Chassis” on page 19 for more details.

Before handling any G10 CMTS module, always wear an ESD ground strap that is connected to the ESD strap jack located on the front of the chassis.

Leave all modules in the anti-static bags they are shipped in until you are ready to install the modules into the G10 CMTS.

Handle all modules by their card edges or ejectors and avoid directly touching any component on a module.

Ensure that all modules and power supplies are properly aligned and mated to their respective midplane connectors prior to powering up the G10 CMTS. Check that all captive retainer screws are securely tightened according to the torque specifications provided herein.

Air management modules and air management panels must always be installed in empty slots while operating the G10 CMTS to ensure that proper air ventilation occurs throughout the chassis.

All modules and power supplies are designed to smoothly slide into the G10 CMTS chassis using the card guides. Do not apply excessive force during the insertion of any assembly into the system. If resistance to insertion is encountered while installing any assembly, carefully remove it, realign its card edge with the chassis’ card guides, and reinsert it into the system.

Do not operate the G10 CMTS without the front and rear fan trays that are shipped with the system.

Ensure that the correct number of power supplies are installed for your configuration prior to powering up the G10 CMTS. Refer to “Installing a DOCSIS Module” on page 31 or consult with a Juniper Networks field engineer for power supply requirements.

Do not apply torque to screws that is below or above the specifications provided herein.

During the preparation and installation of the G10 CMTS, it is very important to adhere to the precautions presented in this section to avoid damaging the G10 CMTS.

Notices

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Notices

Tools and Equipment Required for Installation

The following tools are needed to install power supplies and modules, and to rack mount the G10 CMTS chassis:

M2.5 Phillips torque screwdriver

M2.5 flathead torque screwdriver

M3 Phillips torque screwdriver

1/8 in. Allen wrench, or 1/8 in. hex torque screwdriver

M5 Phillips torque screwdriver

#10 Phillips torque screwdriver

#10 flathead torque screwdriver

#12 Phillips torque screwdriver

7/16 in. torque wrench

This equipment is intended only for installation in a restricted access location within a building.

This equipment is intended for indoor use only.

This equipment does not have a direct copper connection to the outside plant.

Removal of power supplies or cards will result in access to hazardous energy.

Each power cord must be connected to an independent branch circuit.

This is a Class A product. In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

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Verification of Shipping Cartons

15

22-10 AWG crimper/cutter

In addition, the following supplies may be required:

RF cables and adapters

Ethernet cables with RJ-45 connectors

The following equipment is required to configure the G10 CMTS and verify that the RF system has been setup properly:

PC with asynchronous terminal emulation

RF spectrum analyzer

RF power meter

Verification of Shipping Cartons

Prior to beginning the installation of the G10 CMTS, it is important to verify that the contents of the shipping cartons are identical to the contents listed on the packing lists. In addition, a careful inspection of the shipped contents should be performed to ensure that they are not damaged in any manner. If any contents are missing or damaged, please report this to Juniper Networks customer support.

Following are the steps that are recommended to verify the contents of the shipping cartons match the packing list:

1. Carefully open the shipping cartons. Pay attention to any instructions printed on each shipping carton.

2. Remove all of the contents of the shipping cartons. When lifting heavy contents, be sure to follow the safety precautions listed in “Safety Precautions” on page 11.

3. Verify that the contents of the shipping cartons are identical to the contents listed on the packing lists.

4. Verify that the correct number of power supplies are installed in the G10 CMTS chassis.

5. Open all accessory kits that are included in the shipment. Verify that the contents are identical to the contents listed on the accessory kit packing lists.

6. Install the power supply faceplate included in the shipment by aligning its mounting holes with the holes on the power supply faceplate brackets, inserting the four hex screws, and applying 6 in lb of torque to each of the screws. If additional power supplies will be installed, this step can be deferred.

The power supply faceplate must always be installed prior to powering on the G10 CMTS to ensure that proper air ventilation occurs throughout the chassis.

G10 CMTS Installation Checklist

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7. Install the air intake faceplate included in the shipment by aligning its mounting holes with the holes on the air intake faceplate brackets, inserting the four hex screws, and applying 6 in lb of torque to each of the screws.


Table 1 summarizes all of the steps outlined in this document that are required to successfully install the G10 CMTS in the headend. It is recommended that copies of this table be made and used to keep track of the status of each G10 CMTS being installed.

Table 1: G10 CMTS Installation Checklist

Step Page Number Completion Status

Complete Juniper Networks G10 CMTS Pre-Installation Guide checklist —

Preparation for Installation

Completely review Juniper Networks G10 CMTS Installation and Configuration, including the safety precautions

—

Verify the contents of the shipping cartons

page 15

Verify the number of pre-installed modules and power supplies in the chassis is correct

Verify the contents of all accessory kits

Install the power supply faceplate and the air intake faceplate

Grounding and Rack Mounting the Chassis

Attach the earth ground strap to the chassis page 19

Ensure proper ventilation clearance surrounding the G10 CMTS

page 19

Install an equipment shelf in the rack

If applicable, install the rack mounting brackets

Slide the chassis onto the shelf and mount it to the rack

Attach the earth ground strap to earth ground

Installing Power Supplies

Remove the power supply faceplate

page 25

Determine the bay in which to install the power supply

Remove the power supply filler panel

Release the ejector, align to the card guides, insert the power supply, and close the ejector

Tighten the self-contained screws

Replace the power supply faceplate

Installing a Power Transition Module

Slide the module along its guide rails into the bay

page 29Firmly press the module so that it mates with its midplane power connector and rests flush with the chassis

Tighten the four self-contained screws

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17

Installing a DOCSIS Module and an HFC Connector Module

Remove the air management module where the DOCSIS Module will be inserted

page 31

Release the ejectors, align to the card guides, insert the DOCSIS Module, and close the ejectors


Remove the air management panel where the HFC Connector Module will be inserted

Release the ejectors, align to the card guides, insert the HFC Connector Module, and close the ejectors


Installing a Chassis Control Module and a CCM Access Module

Remove the air management module where the Chassis Control Module will be inserted

page 35

Release the ejectors, align to the card guides, insert the Chassis Control Module, and close the ejectors


Remove the air management panel where the CCM Access Module will be inserted

Release the ejectors, align to the card guides, insert the CCM Access Module, and close the ejectors


Installing a NIC Module and a NIC Access Module

Remove the air management module where the NIC Module will be inserted

page 36

Release the ejectors, align to the card guides, insert the NIC Module, and close the ejectors


Remove the air management panel where the NIC Access Module will be inserted

Release the ejectors, align to the card guides, insert the NIC Access Module, and close the ejectors


Cabling an HFC Connector Module

Determine how the cable plant nodes will be connected to the downstream and upstream ports of the HFC Connector Module

page 37Connect each of the four downstream ports to its respective node

Connect each of the four upstream ports to its respective node

Dress all cables appropriately

Cabling a NIC Module and a NIC Access Module

Thread the network cables through the cable channel from the rear of the chassis

page 45

Connect each of the two 1-Gigabit Ethernet network cables to the ports on the NIC Module

Connect the other ends of the network cables to their respective network equipment in the headend

Connect the RJ-21 end of the NIC Access Module cable into the NIC Access Module and tighten the cable retainer screws

Connect eight RJ-45 connectors of the NIC Access Module cable to a maximum of four DOCSIS Modules

Dress all cables appropriately



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Cabling a Chassis Control Module

Thread the Ethernet cable through the cable channel from the rear of the chassis

page 43

Connect the RJ-45 connector of the Ethernet cable to the 10/100BASE-T port on the Chassis Control Module (Eth0)

Connect the other end of the Ethernet cable to its respective network equipment in the headend

Attaching a PC to the Chassis Control Module

Connect the serial cable to the COM port on the Chassis Control Module page 51

Connect the other end of the serial cable to the serial port on the PC

Connecting to Power Sources

Ensure that each power distribution rocker switch is OFF (AC only)

page 52Plug each power cord into the power receptacles (AC) or terminal blocks (DC)

Close the retainer clips around the power cords (AC) or secure the DC ring lugs to the terminal blocks (DC)

Plug the other ends of the power cords to their respective, independent power sources

Powering On the G10 CMTS

Ensure that the power sources are on

page 55

Turn on the power switches on the power transition modules (AC only)

Check all power supply LEDs (power supply faceplate must be removed, then replaced)

Check front and rear fan tray LEDs

Check all DOCSIS Module LEDs

Check all Chassis Control Module LEDs

Check all NIC Module LEDs

Powering On and Configuring the PC

Power on the PC, launch the asynchronous terminal emulation application, and establish a direct serial connection with the Chassis Control Module page 61Check for correct boot banner and system prompt on PC

Log into the G10 CMTS

Configuring the G10 CMTS

If desired, create new usernames and passwords page 63

Configure miscellaneous parameters page 64

View and save running configuration page 64

Configure downstream channel parameters page 64

Configure upstream channel parameters page 65

Configure a management interface page 67


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19

Chapter 3G10 CMTS Installation

This chapter describes the complete installation procedure for the G10 CMTS. It is assumed that all safety precautions and procedures described in “G10 CMTS Preparation for Installation” on page 11 have been followed prior to performing the procedures presented in this chapter. It is recommended that the entire installation process in this chapter be read prior to performing the actual G10 CMTS installation.

Grounding the Chassis

Prior to rack mounting the G10 CMTS, an earth ground strap should be installed on the chassis, particularly if the sides of the chassis will be inaccessible after it is rack mounted. Figure 5 on page 7 shows the location of the chassis ground nuts on the chassis. Using the two supplied #10 hex bolts, attach the two-ring lug connector of the ground strap to the chassis using 20 in lb of torque on each bolt. The other end of the ground strap will be attached to earth ground after the chassis is rack mounted.

Rack Mounting

This section describes the process for rack mounting the G10 CMTS into an EIA standard 19-inch rack. The mounting brackets are compatible with either of the following racks:

Before installing a power supply or any module into the G10 CMTS, attach one end of an ESD ground strap to your wrist and attach the other end to the ESD strap jack on the front of the chassis (refer to Figure 3 on page 5).

Never power on the G10 CMTS without first grounding the chassis.

Standard 1-3/4” EIA wide1-1/4”, 1/2”, 1-1/4”12-24 tapped

Standard 2” EIA wide1”, 1”12-24 tapped

Rack Mounting

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The G10 CMTS is shipped from the factory with mounting brackets attached to the front of the chassis for front-rack mounting. If the chassis is to be mid-rack mounted, then the mounting brackets must be removed and reinstalled to the center of the chassis.

The following procedure assumes that all of the contents of the shipping cartons, including the G10 CMTS chassis, have been removed.

1. Prior to rack mounting, ensure that proper clearance is maintained between the G10 CMTS chassis and its surroundings to allow adequate air ventilation to flow into the air intakes and out of the air exhaust:

A minimum of 3 feet (0.91 m) between the front of the chassis and any other object

A minimum of 2 feet (0.61 m) between the rear of the chassis and any other object

A minimum of 3 inches between each side of the chassis and any other object

Figure 7 on page 21 illustrates the air flow through the chassis.

If there is no other equipment installed in the rack, the G10 CMTS should be installed as low as possible into the rack.

The G10 CMTS chassis must be rack mounted prior to the installation of any additional power supplies or modules.

In general, when more than one piece of equipment is mounted into a rack, the heaviest piece of equipment should be installed at the bottom of the rack, and each successive piece installed should be lighter than the piece immediately below it. For planning purposes, a minimally-populated G10 CMTS weighs approximately 80 lb (36 kg), and a fully-populated G10 CMTS weighs approximately 140 lb (64 kg).

The power supply faceplate must always be installed prior to powering on the G10 CMTS to ensure that proper air ventilation occurs throughout the chassis.

The G10 CMTS does not require any clearance between the bottom of the chassis and the floor. Similarly, there are no clearance requirements between the top of the chassis and the bottom of another G10 CMTS stacked above it on the same rack (refer to Figure 11 on page 25).

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Rack Mounting

21

Figure 7: Air Flow Through Chassis

2. It is recommended that an equipment shelf be installed into the rack that can support the maximum weight (140 lb, or 64 kg) and dimensions of the chassis. The chassis dimensions, when viewed from the bottom, are provided in Figure 8 on page 22.

Rack Mounting

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Figure 8: Bottom of Chassis

3. If the chassis will be front-rack mounted, jump ahead to Step 5. If the chassis will be mid-rack mounted, proceed to Step 4.

4. Remove the seven screws fastening the mounting brackets to the front of the chassis, align the brackets with the corresponding hole patterns in the center of the chassis, and insert the seven screws into the chassis. Apply 20 in lb of torque to each of the seven screws.

5. When lifting the chassis, be sure to follow the safety precautions listed in the “Safety Precautions” on page 11. Using at least three installers—one installer lifting on the left handle, one installer lifting on the right handle, and one installer lifting with their hands underneath the front and bottom portion of the chassis—slowly lift and slide the G10 CMTS onto the equipment shelf until the handles on each side of the chassis come close to the rack rails. Figure 9 on page 23 illustrates the proper manner in which to lift the chassis such that the risk of injury is minimized.

17.3 in (439.4 mm)

Front

18.6

in (

472.

6 m

m)

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Rack Mounting

23

Figure 9: Lifting the Chassis

6. With the weight of the chassis being supported by both the equipment shelf and the installer in the front of the chassis, the two installers on the sides of the chassis can let the handles hang vertically so that the chassis can be further slid onto the equipment shelf.

7. Continue sliding the chassis all the way onto the rack until the flanges of the mounting brackets are flush with the mounting rails of the rack, and the mounting holes in the mounting brackets are aligned with the corresponding holes in the mounting rails.

8. Using the twelve #12 screws supplied in the accessory kit (six for each mounting bracket), fasten the chassis to the rack by applying 30 in lb of torque to each of the 12 screws (refer to Figure 10 on page 24). Do not completely tighten any screw to its torque specification until all 12 screws are inserted.

9. Attach the ground strap to earth ground.

Figure 11 on page 25 illustrates a fully populated rack with three G10 CMTS chassis.

Power

FaultPower

FaultPower

FaultPower

FaultPower

Fault

Power

FaultPower

FaultPower

Fault

Rack Mounting

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Figure 10: Rack-Mounted Chassis

Power

FaultPower

FaultPower

FaultPower

FaultPower

Fault

Power

FaultPower

FaultPower

Fault

Eth0Eth0

12

12

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25

Figure 11: Rack Fully Populated with Three G10 CMTS Chassis

At this point, the installation of any additional power supplies or modules can be installed in the chassis as described in “Installing Power Supplies” on page 25 through “Installing a NIC Access Module” on page 37.


The G10 CMTS is shipped from the factory with a pre-configured number of power supplies installed. However, additional power supplies—up to a total of 10—may need to be installed based on current or future operating configurations of the G10 CMTS. Installing additional power supplies beyond the current requirements of the system provides power source and power supply redundancy which ensures the CMTS will be adequately powered in the event a power source, or one or more power supplies fail.


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The following procedure describes the steps required for installing additional power supplies:

1. The power supply faceplate must be removed by removing the four hex screws that fasten the faceplate to the two power supply faceplate brackets.

2. Decide the bay in which the power supply will be inserted. As described in the G10 CMTS Functional Description, the midplane is electrically partitioned into two domains—Domain A (slots 1—6) and Domain B (slots 7, 9—13). The power supplies in each domain are supplied from the power source connected to that domain’s power transition module. However, the DC outputs of all ten power supplies in both domains are interconnected along the midplane. Therefore, if power source redundancy is not a consideration, adding a power supply to either domain will supply additional power to all of the modules in the chassis. However, if power source redundancy is desired, the addition of a power supply in one domain must be accompanied with the addition of a power supply in the other domain. Within a domain, a power supply can be installed in any of the available five bays. Figure 12 on page 27 illustrates the two power supply domains.

3. Remove the power supply filler panel covering the selected bay by loosening the two self-contained screws.

4. If the power supply’s ejector is locked in the vertical position, press down on the ejector release while simultaneously pulling the ejector away from the power supply. The ejector should rest at approximately 45° from the faceplate.

5. Each power supply bay has an upper and lower card guide. Align the printed circuit board of the power supply with the bay card guides and slowly slide the power supply into the bay until it comes to a stop with the inside tabs of the ejector (tabs closest to midplane) resting over the power supply ejector rail (refer to Figure 13 on page 28).

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27

Figure 12: Front and Rear Views of Midplane

Front View

P5

P4

P3

P2

P1

Fan Connectors

1 2 3 4 5 6 7 8 9 10 11 12 13

PS1 PS2 PS3 PS4 PS5 PS6 PS7 PS8 PS9 PS10

PowerSupplyConnectors

cPCI Bus Domain A

Pwr Supply Domain A Pwr Supply Domain B

cPCI Bus Domain B

Rear View

P5

P4

P3

Fan Connectors

12345678910111213

PowerDistributionConnectors


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Figure 13: Power Supply Installation

6. Firmly lift the ejector to the vertical position until the ejector release clicks into position. Check that the inside tabs of the ejector extend into the power supply ejector rail. At this point the front of the power supply should be flush with any other installed power supplies.

7. Tighten the upper and lower retainer screws by applying 3 in lb of torque to each screw.

8. Repeat this process for all power supplies that must be installed.

9. Replace the power supply faceplate by aligning its mounting holes with the holes on the power supply faceplate brackets, inserting the four hex screws, and applying 6 in lb of torque to each of the screws. If there is not enough space on the side of the chassis to use a torque screwdriver, then an Allen wrench can be used for this purpose.

1

Power

Fault

2

The power supply faceplate and power supply filler panels must be replaced prior to powering on the G10 CMTS to ensure that proper air ventilation occurs throughout the chassis.

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29


The G10 CMTS is generally shipped with power transition modules installed at the factory. However, a G10 CMTS chassis can be ordered without power transition modules, in which case the modules must be ordered separately and installed into the chassis.

The following procedure describes describes how to install power transition modules into their empty bays within the chassis (refer to Figure 14 on page 30).

1. Slowly slide a module into its bay between the upper and lower power transition module guide rails. Ensure the module rests on top of the lower power transition module guide rail tabs.

2. As the module starts to make contact with the power transition module midplane connector, firmly push the module until it rests flush against the upper and lower power transition module mounting rails. You should be able to feel the slight resistance of the mating of the module connector with the midplane connector.

3. Tighten the four self-contained screws in each of the corners of the module. Apply 4 in lb of torque to each of the four screws.

4. Repeat this procedure for the second power transition module.

Do not use an AC and a DC power transition module in the same chassis. Either use two AC or two DC power transition modules.

Ensure that the power supplies installed in the chassis (AC or DC) are consistent with the power transition modules installed (AC or DC).


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Figure 14: Power Transition Module Installation

KBD

MOUSE

RESET

FD HD

Eth0

Eth1

COM2

COM1

Eth0

Eth1

US 3

US 2

US 1

US 0

DS 3

DS 2

DS 1

DS 0

EX

T FA

ULT

INT

FAU

LTO

PE

RA

TIO

NA

LP

OW

ER

1

2

Eth0

Eth1

US 3

US 2

US 1

US 0

DS 3

DS 2

DS 1

DS 0

Power TransitionModule

Midplane Connector


Guide Rail Tabs


Guide Rail


Mounting Rail


Mounting Rail

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Installing a DOCSIS Module

31


The G10 CMTS chassis accommodates a total of eight DOCSIS Modules. The chassis is not shipped from the factory with any DOCSIS Modules pre-installed into any card cage slots. All DOCSIS Modules ordered are packaged separately and must be installed at the headend after the G10 CMTS has been rack mounted. The card cage is shipped from the factory with seven air management modules populated into front slots that do not contain DOCSIS Modules, and seven air management panels into rear slots that do not contain HFC Connector Modules. These air management modules and panels act as baffles that prevent air from flowing upward through empty space or out of the chassis, and redirect the air flow through slots that contain active modules. Card cage slot 1 (front and back) is intentionally left unpopulated when shipped from the factory because at least one DOCSIS Modules and one HFC Connector Module must be installed in the system.

DOCSIS Modules are installed in the front of the G10 CMTS chassis in card cage slots 1 through 4 (for Domain A) and slots 10 through 13 (for Domain B). HFC Connector Modules are installed in the rear of the G10 CMTS chassis in card cage slots 1 through 4 (for Domain A) and slots 10 through 13 (for Domain B). Refer to Figure 12 on page 27 and Figure 6 on page 8 for views of the front, rear, and top of the chassis midplane. To assist with the installation, the top of the air intake faceplate, the bottom of the power supply faceplate, and the top of the rear fan tray are labeled with the slot numbers.

The following procedure describes the steps required for installing a DOCSIS Module:

1. If applicable, remove the air management module from the slot. Loosen the two retainer screws, then press upward and downward on the ejector releases. Simultaneously pull the ejectors away from the module faceplate, and slowly slide the module out of its slot until it is fully removed from the system (refer to Figure 15 on page 32).

2. Remove the DOCSIS Module from its anti-static bag being careful to avoid directly touching any component on the module. Handling the module only by its card edges or ejectors is highly recommended.

3. If the upper or lower ejector of the DOCSIS Module is locked in the vertical position, press upward or downward, respectively, on the ejector release while simultaneously pulling the ejector away from the module faceplate. Each ejector should rest at approximately 45° away from its locked position.

As DOCSIS Modules are installed in your CMTS, ensure the correct number of power supplies are installed to support your configuration. The Juniper Networks production guideline is to install power supplies in a quantity of:

N = 1 + M/2 rounded upWhere:

N = Number of power suppliesM = Number of DOCSIS Modules

If any G10 CMTS module has been removed from its anti-static bag and must be temporarily put aside prior to its installation, the module should be replaced into the anti-static bag, or placed on top of an anti-static mat that is properly grounded.


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4. Each DOCSIS Module card cage slot in the front of the chassis has an upper and lower card guide. Align the printed circuit board of the DOCSIS Module with the card guides and slowly slide the module into the slot until it comes to a stop with the inside tabs (tabs closest to midplane) of the upper and lower ejectors resting directly under and over, respectively, the module ejector rail (refer to Figure 16 on page 33).

5. Simultaneously close the ejectors toward the module faceplate to the vertical position until each ejector release clicks into position. At this point the DOCSIS Module faceplate should be flush with the faceplate of any other adjacent module.

6. Tighten the two retainer screws by applying 3 in lb of torque to each screw.

Figure 15: Air Management Module Removal

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1 2

3

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Installing an HFC Connector Module

33

Figure 16: DOCSIS Module Installation


The following procedure describes the steps required for installing an HFC Connector Module.

1. If applicable, remove the air management panel from the slot by loosening the two self-contained screws at the top and bottom of each panel.

2. Remove the HFC Connector Module from its anti-static bag being careful to avoid directly touching any component on the module. Handling the module only by its card edges or ejectors is highly recommended.

1

2

2

Unlike a DOCSIS Module, the ejectors on an HFC Connector Module lock in the horizontal position (90° from the faceplate) when the module is properly installed into its card slot.


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3. If the upper or lower ejector of the HFC Connector Module is locked in the horizontal position, press upward or downward, respectively, on the ejector release while simultaneously pulling the ejector away from the module faceplate. Each ejector should rest at approximately 45° away from its locked position.

4. Each HFC Connector Module card cage slot in the rear of the chassis has an upper and lower card guide. Align the printed circuit board of the HFC Connector Module with the card guides and slowly slide the module into the slot until it comes to a stop with the inside tabs (tabs closest to midplane) of the upper and lower ejectors resting directly under and over, respectively, the module ejector rail (refer to Figure 17).

5. Simultaneously close the ejectors toward the module faceplate to the horizontal position until each ejector clicks into position. At this point the HFC Connector Module faceplate should be flush with the faceplate of any other adjacent module.


Figure 17: HFC Connector Module Installation

Eth0

Eth1

US 3

US 2

US 1

US 0

DS 3

DS 2

DS 1

DS 0

1

2

2

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Installing a Chassis Control Module

35

Installing a Chassis Control Module

The G10 CMTS chassis accommodates a maximum of two Chassis Control Modules. The chassis is not shipped from the factory with any Chassis Control Modules pre-installed into a card cage slot. A Chassis Control Module is packaged separately and must be installed at the headend after the G10 CMTS has been rack mounted. Card cage slot 5 (front and back) is intentionally left unpopulated when shipped from the factory because at least one Chassis Control Module and one CCM Access Module must be installed in the system.

Chassis Control Modules are installed in the front of the G10 CMTS chassis in card cage slot 6 (for Domain A) and slot 7 (for Domain B). CCM Access Modules are installed in the rear of the G10 CMTS chassis in card cage slot 6 (for Domain A) and slot 7 (for Domain B). The following procedure describes the steps required for installing a Chassis Control Module:


2. Remove the Chassis Control Module from its anti-static bag being careful to avoid directly touching any component on the module. Handling the module only by its card edges or ejectors is highly recommended.

3. If the upper or lower ejector of the Chassis Control Module is locked in the vertical position, press upward or downward, respectively, on the ejector release while simultaneously pulling the ejector away from the module faceplate. Each ejector should rest at approximately 45° away from its locked position.

4. Each Chassis Control Module card cage slot in the front of the chassis has an upper and lower card guide. Align the printed circuit board of the Chassis Control Module with the card guides and slowly slide the module into the slot until it comes to a stop with the inside tabs (tabs closest to midplane) of the upper and lower ejectors resting directly under and over, respectively, the module ejector rail (this step is similar to the installation of a DOCSIS Module as illustrated in Figure 16 on page 33).

5. Simultaneously close the ejectors toward the module faceplate to the vertical position until each ejector release clicks into position. At this point the Chassis Control Module faceplate should be flush with the faceplate of any other adjacent module.


Installing a CCM Access Module

The following procedure describes the steps required for installing a CCM Access Module (refer to Figure 21 on page 44 for an illustration of the rear panel).


h

Unlike a Chassis Control Module, the ejectors on a CCM Access Module lock in the horizontal position (90° from the faceplate) when the module is properly installed into its card slot.

Installing a NIC Module

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2. Remove the CCM Access Module from its anti-static bag being careful to avoid directly touching any component on the module. Handling the module only by its card edges or ejectors is highly recommended.

3. If the upper or lower ejector of the CCM Access Module is locked in the horizontal position, press upward or downward, respectively, on the ejector release while simultaneously pulling the ejector away from the module faceplate. Each ejector should rest at approximately 45° away from its locked position.

4. Each CCM Access Module card cage slot in the rear of the chassis has an upper and lower card guide. Align the printed circuit board of the CCM Access Module with the card guides and slowly slide the module into the slot until it comes to a stop with the inside tabs (tabs closest to midplane) of the ejectors resting directly under and over, respectively, the module ejector rail (this step is similar to the installation of an HFC Connector Module as illustrated in Figure 17 on page 34).

5. Simultaneously close the ejectors toward the module faceplate to the horizontal position until each ejector clicks into position. At this point the CCM Access Module faceplate should be flush with the faceplate of any other adjacent module.


Installing a NIC Module

The G10 CMTS chassis accommodates a maximum of two NIC Modules. The chassis is not shipped from the factory with any NIC Modules pre-installed into a card cage slot. A NIC Module is packaged separately and must be installed at the headend after the G10 CMTS has been rack mounted.

NIC Modules are installed in the front of the G10 CMTS chassis in card cage slot 5 (for Domain A) and slot 9 (for Domain B). NIC Access Modules are installed in the rear of the G10 CMTS chassis in card cage slot 5 (for Domain A) and slot 9 (for Domain B).

The following procedure describes the steps required for installing a NIC Module:


2. Remove the NIC Module from its anti-static bag being careful to avoid directly touching any component on the module. Handling the module only by its card edges or ejectors is highly recommended.

3. If the upper or lower ejector of the NIC Module is locked in the vertical position, press upward or downward, respectively, on the ejector release while simultaneously pulling the ejector away from the module faceplate. Each ejector should rest at approximately 45° away from its locked position.

4. Each NIC Module card cage slot in the front of the chassis has an upper and lower card guide. Align the printed circuit board of the NIC Module with the card guides and slowly slide the module into the slot until it comes to a stop with the inside tabs (tabs closest to midplane) of the upper and lower ejectors resting directly under and over, respectively, the module ejector rail (this step is similar to the installation of a DOCSIS Module as illustrated in Figure 16 on page 33).

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Installing a NIC Access Module

37

5. Simultaneously close the ejectors toward the module faceplate to the vertical position until each ejector release clicks into position. Check that the inside tabs of each ejector are protruding inside the holes of the module ejector rail. At this point the NIC Module faceplate should be flush with the faceplate of any other adjacent module.


Installing a NIC Access Module

The following procedure describes the steps required for installing a NIC Access Module.


2. Remove the NIC Access Module from its anti-static bag being careful to avoid directly touching any component on the module. Handling the module only by its card edges or ejectors is highly recommended.

3. If the upper or lower ejector of the NIC Access Module is locked in the horizontal position, press upward or downward, respectively, on the ejector release while simultaneously pulling the ejector away from the module faceplate. Each ejector should rest at approximately 45° away from its locked position.

4. Each NIC Access Module card cage slot in the rear of the chassis has an upper and lower card guide. Align the printed circuit board of the NIC Access Module with the card guides and slowly slide the module into the slot until it comes to a stop with the inside tabs (tabs closest to midplane) of the upper and lower ejectors resting directly under and over, respectively, the module ejector rail (this step is similar to the installation of an HFC Connector Module as illustrated in Figure 17 on page 34).

5. Simultaneously close the ejectors toward the module faceplate to the horizontal position until each ejector release clicks into position. Check that the inside tabs of each ejector are protruding inside the holes of the module ejector rail.At this point the NIC Access Module faceplate should be flush with the faceplate of any other adjacent module.



This section describes how to connect the four downstream and four upstream F-connector ports of an HFC Connector Module. This section also describes how to connect the two 10/100BASE-T Ethernet ports on an HFC Connector Module.

Unlike a NIC Module, the ejectors on a NIC Access Module lock in the horizontal position (90° from the faceplate) when the module is properly installed into its card slot.


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Cabling the F-connector Ports

Each DOCSIS Module— and its corresponding HFC Connector Module—support a total of four downstream channels, where one channel is assigned to each physical downstream port. Each DOCSIS Module supports a total of 8 upstream channels which can be logically allocated to any one of the four physical upstream ports. Figure 18 on page 38 illustrates an example where the number of channels allocated on each port is five, three, seven, and one, respectively. The assignment of a node to a port, and the allocation of upstream channels per upstream port should be considered prior to connecting the coaxial cables from the cable plant to the HFC Connector Module.

Figure 18: Example of Allocation of Multiple Channels Per Port

One possible deployment scenario for the upstream is to attach one node per upstream port and to turn on one upstream channel per node. If one of the nodes reaches capacity due to high penetration or heavy usage of bandwidth-intensive services, then another channel can be provisioned on that port.

The following procedure describes how to connect to the downstream ports (refer to Figure 19 for port labeling):

1. Select the first node(s) in the cable plant for assignment to the first of four downstream ports.

Prior to inserting a coaxial cable into any of the HFC Connector Module F-connectors, ensure that the cable meets the requirements provided in “Coaxial Cable Requirements” on page 89.

When tightening a coaxial cable onto an F-connector, use a 7/16 in. torque wrench to apply torque according to SCTE standards.

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39

2. Connect the coaxial cable associated with the first node(s) to the F-connector on the HFC Connector Module labeled “DS 0”.

3. If applicable, select the second node(s) in the cable plant for assignment to the second of four downstream ports.

4. Connect the coaxial cable associated with the second node(s) to the F-connector on the HFC Connector Module labeled “DS 1”.

5. If applicable, select the third node(s) in the cable plant for assignment to the third of four downstream ports.

6. Connect the coaxial cable associated with the third node(s) to the F-connector on the HFC Connector Module labeled “DS 2”.

7. If applicable, select the fourth node(s) in the cable plant for assignment to the fourth of four downstream ports.

8. Connect the coaxial cable associated with the fourth node(s) to the F-connector on the HFC Connector Module labeled “DS 3”.


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Figure 19: HFC Connector Module Rear Panel

The following procedure describes how to connect to the upstream ports (refer to Figure 19 for port labeling):

Eth0

Eth1

US 3

US 2

US 1

US 0

DS 3

DS 2

DS 1

DS 0

In the following procedures a node may represent a single node, or multiple nodes that are combined.

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41

1. Select the first node in the cable plant for assignment to the first of four upstream ports.

2. Connect the coaxial cable associated with the first node(s) to the F-connector on the HFC Connector Module labeled “US 0”.

3. If applicable, select the second node in the cable plant for assignment to the second of four upstream ports.

4. Connect the coaxial cable associated with the second node(s) to the F-connector on the HFC Connector Module labeled “US 1”.

5. If applicable, select the third node in the cable plant for assignment to the third of four upstream ports.

6. Connect the coaxial cable associated with the third node(s) to the F-connector on the HFC Connector Module labeled “US 2”.

7. If applicable, select the fourth node in the cable plant for assignment to the fourth of four upstream ports.

8. Connect the coaxial cable associated with the fourth node(s) to the F-connector on the HFC Connector Module labeled “US 3”.

9. All coaxial cables should be dressed appropriately and routed to avoid obstructing the rear connections of the G10 CMTS (refer to Figure 20 on page 42). The usage of cable organizers is recommended to assist with cable routing.

If a NIC Module is not used in the G10 CMTS, connect each of the two 10/100BASE-T Ethernet RJ-45 ports labeled “Eth0” and “Eth1” to the appropriate network equipment in the headend (refer to Figure 19 on page 40 for port labeling).

If a NIC Module is installed, then refer to “Cabling a NIC Access Module” on page 48 for a description on how to connect the HFC Connector Module Ethernet ports to the NIC Access Module.

When connecting nodes to the upstream ports of an HFC Connector Module, do not split a coaxial cable from one node and attach it to more than one upstream port. Doing so prevents using the complete features of a DOCSIS Module that were designed for supporting four separate nodes or four groups of nodes that are combined.

Both Ethernet RJ-45 ports on the HFC Connector Module must be connected to the network.


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Figure 20: Rear Coaxial Cable Connections

Eth1

Eth1

US D

US C

US B

US 0

DS D

DS C

DS 1

DS 0

Eth0

Eth1

US D

US C

US B

US 0

DS D

DS C

DS 1

DS 0

Eth0

Eth1

US D

US C

US B

US 0

DS D

DS C

DS 1

DS 0

Eth0

Eth1

US 3

US 2

US 1

US 0

DS 3

DS 2

DS 1

DS 0

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Eth0

Eth1

COM2

COM1

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Eth1

Eth1

US D

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US B

US A

DS D

DS C

DS B

DS A

Eth1

Eth1

US D

US C

US B

US A

DS D

DS C

DS B

DS A

Eth1

Eth1

US D

US C

US B

US 0

DS D

DS C

DS 1

DS 0

Eth0

Eth1

US 3

US 2

US 1

US 0

DS 3

DS 2

DS 1

DS 0

Eth0

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43


The Chassis Control Module contains a 10/100BASE-T Ethernet RJ-45 port labeled “Eth0” on its front panel (refer to Figure 21 on page 44). This port is used for the management interface to the G10 CMTS.

The following procedure describes how to connect this port to the network:

1. Carefully thread the Ethernet cable into the cable channel from the rear of the chassis (refer to Figure 4 on page 6) until it extends through the opening of the power supply faceplate.

2. Plug the RJ-45 connector of the Ethernet cable into the RJ-45 port of the Chassis Control Module labeled “Eth0.”

3. Attached the other end of the Ethernet cable to its respective network equipment in the headend.

The CCM Access Module is not used in this procedure.


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Figure 21: Chassis Control Module and CCM Access Module Panels

KBD

MOUSE

RESET

FD HD

COM2

COM1

Eth0

Eth1

Eth0

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Cabling a NIC Module

45


The NIC Module contains two full-duplex, 1-Gigabit Ethernet GBIC (Gigabit Interface Converter) transceiver ports on its front panel. Refer to “GBIC Interface Specifications” on page 91 for the specifications of the various types of GBIC interfaces provided.

The following procedure describes how to connect the network cables to these ports (refer to Figure 22 on page 46 for port labeling):

1. Carefully thread each of the two cables into the cable channel from the rear of the chassis (refer to Figure 4 on page 6) until they extend through the opening of the power supply faceplate.

2. Connect the transmit/receive pair of each of these cables to the GBIC ports labeled “0” and “1” on the NIC Module.

3. Attached the other end of each cable to its respective network equipment in the headend.

4. Repeat this process if another NIC Module is installed in the chassis.

Figure 23 on page 47 provides the front view of the chassis with the network cables installed into a NIC Module.

If using optical cables, take care not to bend the cables when threading them through the cable channel.

Both ports on each NIC Module must be connected to the network if redundancy is desired.


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Figure 22: NIC Module and NIC Access Module Panels

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1GB1 GB0

PULL

GBIC

GBIC

CLK PWR RTM OK

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47

Figure 23: NIC Module Cabling – Front View

Power

Fault

Power

Fault

Power

Fault

Power

Fault

Power

Fault

Power

Fault

Power

Fault

Power

Fault

Cabling a NIC Access Module

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This section describes how to interconnect up to two NIC Access Modules to multiple HFC Connector Modules. The procedure assumes that a NIC Module only supports the DOCSIS Modules installed in the same domain of the chassis. Therefore, if five or more DOCSIS Modules are installed in the system, then two NIC Modules are installed to support them. In addition, the procedure assumes that DOCSIS Modules are installed in the following slot order: 1, 2, 3, 4, 10, 11, 12, 13.

If the 1-Gigabit ports on a NIC Modules is used, then the NIC Access Module cables are used to interconnect the Fast Ethernet ports of the HFC Connector Modules to the NIC Access Module. If the 1-Gigabit ports on the NIC Module are not used, then the RJ-45 connectors on the NIC Access Module cable are used for the network side interface.

The following procedure assumes that the 1-Gigabit ports on the NIC Module are used.

1. If applicable, remove the protective cover that is inserted into the RJ-21 end of the NIC Access Module cable.

2. Firmly insert the RJ-21 end of the cable into the connector labeled “1” on the NIC Access Module in slot 5 (refer to Figure 22 on page 46).

3. Tighten the two cable retainer screws by applying 4 in lb of torque to each of the screws.

4. Locate the RJ-45 connectors of the NIC Access Module cable labeled “PORT 1” and “PORT 2” and plug them into the RJ-45 ports of the HFC Connector Module in slot 1 labeled “Eth0” and “Eth1,” respectively (refer to Figure 19 on page 40 for port labeling). If an HFC Connector Module is installed in slot 2, proceed to Step 5; otherwise, jump ahead to Step 15.

5. Locate the RJ-45 connectors of the NIC Access Module cable labeled “PORT 3” and “PORT 4” and plug them into the RJ-45 ports of the HFC Connector Module in slot 2 labeled “Eth0” and “Eth1,” respectively. If an HFC Connector Module is installed in slot 3, proceed to Step 6; otherwise, jump ahead to Step 15.


In this particular procedure, the RJ-45 ports of the CCM Access Module labeled “Eth0” and “Eth1” are unused.

In this particular procedure, there is no requirement that a specific RJ-45 connector on the NIC Access Module cable be connected to a specific Fast Ethernet port on an HFC Connector Module. However, it is recommended that you use a consistent wiring plan for all of your G10 CMTS installations such as the one provided herein.

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49


8. If you have reached this step in the procedure, then at least five HFC Connector Modules are installed in the G10 CMTS, in which case a second NIC Access Module and its corresponding cable are required to complete the interconnection procedure. If applicable, remove the protective cover that is inserted into the RJ-21 end of the NIC Access Module cable.

9. Firmly insert the RJ-21 end of the second NIC Access Module cable into the connector labeled “1” on the NIC Access Module in slot 9 (refer to Figure 22 on page 46).

10. Tighten the two cable retainer screws by applying 4 in lb of torque to each of the screws.


12. Locate the RJ-45 connectors of the second NIC Access Module cable labeled “PORT 3” and “PORT 4” and plug them into the RJ-45 ports of the HFC Connector Module in slot 11 labeled “Eth0” and “Eth1,” respectively. If an HFC Connector Module is installed in slot 12, proceed to Step 13; otherwise, jump ahead to Step 15.


14. Locate the RJ-45 connectors of the NIC Access Module cable labeled “PORT 7 and “PORT 8” and plug them into the RJ-45 ports of the HFC Connector Module in slot 13 labeled “Eth0” and “Eth1,” respectively.

15. At this point, all of the Ethernet ports of the HFC Connector Modules should be connected to the NIC Access Module. Any unused RJ-45 connectors on a NIC Access Module cable can be connected to the network side interface as Fast Ethernet switch ports. Figure 24 on page 50 provides an illustration of these connections (without the HFC Connector Module coaxial cables shown).

16. All used and unused Ethernet cable wires on either NIC Access Module cable should be dressed appropriately and routed to avoid obstructing the rear connections of the G10 CMTS.

Table 2 on page 51 summarizes the wiring plan used in this procedure. The “Module – Slot / Port” headings specify the module name, the slot in which the module is installed, and the RJ-45 port label of the module.


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Figure 24: NIC Access Module Cable Connections

Eth0

Eth1

US 3

US 2

US 1

US 0

DS 3

DS 2

DS 1

DS 0

Eth0

Eth1

US 3

US 2

US 1

US 0

DS 3

DS 2

DS 1

DS 0

Eth0

Eth2

US 3

US 2

US 1

US 0

DS 3

DS 2

DS 1

DS 0

Eth1

Eth2

US D

US C

US 1

US 0

DS 3

DS 2

DS 1

DS 0

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Eth1

COM2

COM1

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Eth0

Eth1

COM2

COM1

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Eth1

US 3

US 2

US 1

US 0

DS 3

DS 2

DS 1

DS 0

Eth0

Eth1

US 3

US 2

US 1

US 0

DS 3

DS 2

DS 1

DS 0

Eth0

Eth1

US 3

US 2

US 1

US 0

DS 3

DS 2

DS 1

DS 0

Eth0

Eth1

US 3

US 2

US 1

US 0

DS 3

DS 2

DS 1

DS 0

Eth0

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Table 2: NIC Access Module Wiring Plan Example


Initial configuration of the G10 CMTS requires a direct connection between a personal computer (PC) and the Chassis Control Module. Using the DB-9–to–DB-9 serial cable supplied in the accessory kit, connect one end of the cable to the RS-232 DB-9 port labeled COM on the Chassis Control Module front panel (refer to Figure 21 on page 44), and connect the other end to the serial port on your PC.

NIC Access Module 5 Cable Connector Module – Slot/Port

NIC Access Module 9 Cable Connector Module – Slot/Port

PORT 1 HFC – 1 / Eth0 PORT 1 HFC – 10 / Eth0








PORT 9 To NSI or Unused1 PORT 9 To NSI or Unused1




1. These ports can be used for Fast Ethernet connections to the network side interface (NSI); otherwise, these connectors are unused.

An adapter may be needed to connect the DB-9 connector of the cable to the serial port of your PC (for example, DB-9–to–DB-25).


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AC Power

Each AC power transition module in the G10 CMTS chassis contains a standard IEC 20-amp three-prong male AC power receptacle for connecting to an AC power source (refer to Figure 4 on page 6). Facing the rear of the chassis, the AC power transition modules on the right and left sides of the chassis independently support the power supplies in Domain A and Domain B, respectively.

The following procedure describes the steps for connecting the AC power transition modules to their power sources (refer to Figure 25 on page 53):

1. Determine if one or both AC power transition modules need to be powered up. By default, Domain A must always be powered up. If one or more modules is installed in card cage slots 7 through 13 (refer to Figure 12 on page 27), then Domain B must also be powered up. The procedure that follows assumes that both domains must be powered up.

2. Ensure that the rocker switch on each AC power transition module is in the OFF (O) position.

3. Swing the power cord retainer clips to their upright position, plug the female end of each 20-A power cord supplied with your shipment into the AC power receptacle on each AC power transition module, then close the retainer clips so that they clasp around the power cords.

4. Plug the male end of each 20-A power cord to independent power sources. Always use AC power sources that support the ground prong of the power cord.

Ensure that you have read and taken the proper safety precautions as described in “G10 CMTS Preparation for Installation” on page 11 prior to connecting an AC or DC power source to the G10 CMTS.

To enhance the redundancy capabilities of the G10 CMTS, it is recommended that each domain be powered by sources on different circuits.

The G10 CMTS power supplies are autosensing which enables them for usage with 110 VAC or 220 VAC.

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Figure 25: AC Power Cord and Retainer Clip

DC Power

Each DC power transition module in the G10 CMTS chassis contains a terminal block for connecting to a DC power source (refer to Figure 26 on page 54). Facing the rear of the chassis, the DC power transition modules on the right and left sides of the chassis independently support the power supplies in Domain A and Domain B, respectively. To enhance the redundancy capabilities of the G10 CMTS, it is recommended that each domain be powered by sources on different circuits.

The following procedure describes the steps for connecting the DC power transition modules to their power sources:

1. Determine if one or both DC power transition modules need to be powered. By default, Domain A must always be powered. If one or more modules is installed in card cage slots 7 through 13 (refer to Figure 12 on page 27), then Domain B must also be powered. The procedure that follows assumes that both domains must be powered.

2. Shipped with the G10 CMTS are ring lugs that are used to connect the DC power cord to the DC power transition module terminal block. These ring lugs must be crimped to the negative (–) and positive (+) wires of the DC power cord in order to properly connect to the DC power transition module.

3. Remove the screw from the negative (–) terminal on the terminal block of the DC power transition module, insert the screw through the ring lug of the power cord that will be attached to the negative (–) terminal of the DC power source, and tighten the screw into the negative (–) terminal on the terminal block. Apply 20 in lb of torque to the screw.

4. Remove the screw from the positive (+) terminal on the terminal block of the DC power transition module, insert the screw through the ring lug of the power cord that will be attached to the positive (+) terminal of the DC power source, and tighten the screw into the positive (+) terminal on the terminal block. Apply 20 in lb of torque to the screw.

Power CordRetainer Clip


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5. Connect the other end of the power cord connected to the negative (–) terminal on the terminal block of the DC power transition module to the negative (–) terminal of the DC power source in accordance with the manufacturer’s specifications.

6. Connect the other end of the power cord connected to the positive (+) terminal on the terminal block of the DC power transition module to the positive (+) terminal of the DC power source in accordance with the manufacturer’s specifications.

Figure 26: DC Power Transition Module

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Chapter 4G10 CMTS Configuration

This chapter describes the complete configuration procedure for the G10 CMTS. It is assumed that the installation procedures described in “G10 CMTS Installation” on page 19 have been followed prior to performing the procedures presented in this chapter. It is recommended that the entire configuration process in this chapter be read prior to performing the actual G10 CMTS configuration.


The following steps define the power-on procedure and the expected state of the LEDs on the power supplies, fan trays, and module panels that should be monitored after the G10 CMTS is powered on:

1. Ensure that the power sources connected to the power transition modules are on.

2. If the G10 CMTS is AC-powered, press the rocker switch on each AC power transition module to the ON (|) position (refer to Figure 25 on page 53). There is no requirement that the two power switches be turned on in any particular order. If the G10 CMTS is DC-powered, the system will be powered up when the DC power transition modules have been connected to the DC power sources.

3. Remove the power supply faceplate by removing the four hex screws that fasten the faceplate to the two power supply faceplate brackets (an Allen wrench can be used for this purpose). Ensure that all power supplies are operating normally by checking that the POWER LED is illuminated green and the FAULT LED is not illuminated. If this is not the case, refer to Table 3 on page 56 for a list of other LED combinations and the corresponding action to take.

Ensure that you have read and taken the proper safety precautions as described in “G10 CMTS Preparation for Installation” on page 11 prior to powering on the G10 CMTS.

The procedure that follows assumes that both Domain A and Domain B are connected to power sources.


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Table 3: Power Supply LEDs


5. Ensure that the fan tray LEDs (two in front, one in rear) are not illuminated (refer to Figure 2 on page 4 and Figure 5 on page 7 for the location of these LEDs). If any fan tray LED is illuminated red, then one or more fans in that tray has failed and the entire tray must be replaced (refer to “Replacing a Fan Tray” on page 76).

6. Immediately after the G10 CMTS is powered on, check that the Test LED on every DOCSIS Module faceplate is green and blinking (refer to Figure 27 on page 58). This indicates that the module’s self test is running. Continue to monitor each module’s Test LED until it stops blinking, at which point a green illuminated LED indicates the successful completion of that module’s self test. If any module’s Test LED is red, this indicates the self test was not successful and the module must be replaced (refer to “Removing a DOCSIS Module” on page 71). Table 4 on page 57 indicates the expected status of all of the LEDs on the module’s front panel following the successful completion of the self test.

POWER FAULT Potential Meaning Action

Green Not illuminated Normal operation None

Green Amber Over-temperature – Check that fan trays are operational (refer to Step 5 on page 56)

– Ensure all empty module slots and power supply bays are populated with air management modules, panels, and filler panels

– Ensure air intakes and exhaust are not blocked

Green Amber Over-voltage shutdown Ensure that the correct number of power supplies are installed to support the CMTS configuration

Green Amber Voltage input failure Ensure that the external power sources are operating within specification

Not illuminated Not illuminated Power supply not installed correctly Power down the G10 CMTS and reinstall the power supply as described on “Installing Power Supplies” on page 251

Not illuminated Amber Not applicable —

1. If power supply redundancy is implemented, then a power supply can be replaced without powering down the system.

To minimize the risk of damage to the G10 CMTS, a failed fan tray should be replaced as soon as possible to ensure that proper air ventilation occurs throughout the chassis.

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Table 4: DOCSIS Module LED Status

LED Status Meaning

CPCI Green Blinking cPCI bus activity

Test Green Self test successful

1 through 6 [TBD] [TBD]

Eth0 OFF No link present

Eth1 OFF No link present

Activity 0 OFF No activity

Activity 1 OFF No activity

Link OFF No link present

10/100 OFF Off – 10 MHz

On – 100 MHz

Hot Swap OFF Not safe to remove module


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Figure 27: DOCSIS Module Front Panel

7. Immediately after the G10 CMTS is powered on, check that the Power LED on the Chassis Control Module faceplate is green (refer to Figure 28 on page 60 for the location of the Power LED). If the Power LED is red, this indicates a short circuit or over-current condition is detected, in which case the module must be replaced (refer to “Removing a Chassis Control Module” on page 73). Table 5 on page 59 indicates the expected status of all of the LEDs on the module’s front panel following power-on.

Hot Swap

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Table 5: Chassis Control Module LED Status

LED Status Meaning

Minor OFF No minor failure exists

Major OFF No major failure exists

Critical OFF No critical failure exists

Run Green Module is active

ACO OFF Alarm Cutoff not activated

∆1 ∆2 Green On – Active module

Off – Stand-by module

IDE OFF IDE inactive

Power Green Power is applied

USR1 [TBD] [TBD]

USR2 [TBD] [TBD]

Hot Swap OFF Not safe to remove module


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Figure 28: Chassis Control Module Front Panel

8. Immediately after the G10 CMTS is powered on, wait for the OK LED on the NIC Module faceplate to illuminate green, which indicates the module initialization has been successfully completed (refer to Figure 22 on page 46). Certain additional LEDs will be in one state during the initialization (OK LED not illuminated), then change to another state after the initialization (OK LED illuminated green). Table 5 on page 59 indicates the expected status of these particular LEDs, as well as the remaining LEDs on the module’s front panel. If the OK LED does not illuminate, the NIC Module is considered faulty and must be replaced (refer to “Removing a NIC Module” on page 75).

Eth0

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Table 6: NIC Module LED Status

9. The four LEDs at the top of the NIC Access Module rear panel should be checked after confirming the LEDs on its corresponding NIC Module are in the correct state as described in Step 8 (refer to Figure 22 on page 46). Table 7 indicates the expected status of all of the LEDs on the NIC Access Module’s rear panel following power-on. If the OPERATION LED is not illuminated green, the NIC Access Module is considered faulty and must be replaced (refer to the “Removing a NIC Access Module” on page 75).

Table 7: NIC Access Module LED Status


1. Power on the personal computer (PC) attached to the serial port of the Chassis Control Module.

2. Launch your asynchronous terminal emulation application (such as Microsoft Windows Hyperterminal), and establish a direct connection. Configure the port settings as follows:

Bits per second: 9600

Data bits: 8

Parity: None

Stop bits: 1

Flow control: None

LED Pre-initialization Status Post-initialization Status Meaning

Pull Red OFF Normal operation

0 through 23 OFF OFF No link or activity on channels

GB1 and GB0 OFF OFF No link on gigabit channels

CLK Green OFF Undefined

PWR Green Green Power is applied

RTM Green Green Continuity established with NAM

OK OFF Green Successful initialization

EXT FLT Amber OFF No external failure

INT FLT Amber OFF No internal failure

Hot Swap OFF OFF Not safe to remove module

LED Post-initialization Status Meaning

POWER Green Power is applied

OPERATIONAL Green Successful initialization

INT FAULT OFF No internal failure

EXT FAULT OFF No external failure


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3. When a successful connection is made between the PC and the G10 CMTS, the terminal emulation screen on your PC will display a banner and prompt you for a login username:

Copyright (c) 2000-2002 Juniper Networks, Inc.G10 CMTS Release sw_rev_num

Login:

where:

sw_rev_num represents the software revision number

Logging In and Out of the G10 CMTS

1. Type root at the login prompt and press ENTER:

Login: root ↵

2. You will then be prompted for a password. Type changeme as the password and press ENTER:

Password: changeme ↵

You will see the following Command Line Interface (CLI) system prompt:

G10$root#

3. If desired, you can logout of the system as follows:

G10$root# logout↵


This section describes how to use the CLI to perform the initial configuration of the G10 CMTS. The complete details of the CLI can be found in the Juniper Networks G10 CMTS CLI Reference manual.

The procedures provided herein describe how to configure the following:

Usernames and passwords

Miscellaneous parameters

Configuration file

Downstream channel parameters

Upstream channel parameters

A single cable interface consisting of one downstream channel and one upstream channel on a DOCSIS Module/HFC Connector Module pair in slot 1

Two Fast Ethernet interfaces on a DOCSIS Module/HFC Connector Module pair in slot 1

Management interface

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These procedures are provided for illustration purposes. The actual parameters specified during your initial configuration are dependent on your particular preferences, as well as your network and HFC plant characteristics.

Cable Interface Assignment

The G10 CMTS is shipped with a default cable interface assignment as presented in Table 8 and Table 9. Each channel has been preassigned to a port and an interface. The procedures in this chapter assume this default assignment.

Table 8: Cable Interface to Downstream Channel and Port Association

Table 9: Default Cable Interface to Upstream Channel Association

Creating Usernames and Passwords

1. At the initial CLI command prompt, you are in the read-write privilege mode. If desired, you can enter the configure terminal mode and change your password from the default of changeme:

G10$root# configure terminal↵G10$root(config)# username root password myword↵

Some of the CLI commands used in the following procedures set various parameters to their default values and hence their execution is not mandatory. These commands are provided for illustration purposes.

Cable Interface Downstream Channel Downstream Port

0 0 DS 0

1 1 DS 1

2 2 DS 2

3 3 DS 3

Cable Interface Upstream Channel Upstream Port

0 0 US 0

1

1 2 US 1

3

2 4 US 2

5

3 6 US 3

7


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2. You may also want to create new usernames and passwords. Because you are in the privilege mode, any newly created username will have privilege mode access:

G10$root(config)# username newuser password myword↵

Configuring Miscellaneous Parameters

If desired, the following miscellaneous parameters can be assigned:

Set the Hostname to Hub1-G10:

G10$root(config)# hostname Hub1-G10↵Hub1-G10$root(config)#

Set the SNMP server community string to “private” with read/write privileges:

G10$root(config)# snmp-server community private rw↵

Set the time to 2:30pm and the date to December 22, 2001 (you must first exit to the root level):

G10$root(config)# exit↵G10$root# clock set 143000 22 12 2001↵

Viewing and Saving Running Configuration

To view the current configuration of the G10 CMTS, execute the following command:

G10$root# show running-config↵

To save the current configuration of the G10 CMTS, execute the following command. Upon booting up, the system uses the startup-config file to set the configuration:

G10$root# copy running-config startup-config↵

Configuring Downstream Channel Parameters

The procedure in this section specifies various parameters for downstream channel 0 of slot 1 / interface 0. The available downstream channels on a DOCSIS Module are channels 0–3, which always correspond to downstream ports 0–3, respectively, on the HFC Connector Module. Table 10 on page 65 provides the valid ranges of all parameters specified in this section.

“conf t” can be used as an abbreviation for the “configure terminal” command.

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Table 10: Downstream Channel Parameter Ranges

1. Enter the interface cable sub-mode, specifying slot 1 and interface 0:

G10$root# configure terminal↵G10$root(config)# interface cable 1/0↵

2. Specify a frequency of 453000000 Hz for downstream channel 0:

G10$root(config-if-c1/0)# cable downstream 0 frequency 453000000↵

3. Specify an RF power (in tenths dBmV) of 55 dBmV for downstream channel 0:

G10$root(config-if-c1/0)# cable downstream 0 rf-power 550↵

4. Specify 64qam modulation for downstream channel 0:

G10$root(config-if-c1/0)# cable downstream 0 modulation 64qam↵

5. Specify an interleave depth of 8 for downstream channel 0:

G10$root(config-if-c1/0)# cable downstream 0 interleave-depth 8↵

6. At this point, if you desire to view the downstream channel 0 parameters and status, enter the following command:

G10$root(config-if-c1/0)# cable downstream 0 show↵

7. Enable downstream channel 0:

G10$root(config-if-c1/0)# no cable downstream 0 shutdown↵

Configuring Upstream Channel Parameters

The procedure in this section specifies various parameters for upstream channel 0 of slot 1 / interface 0. A default modulation profile for channel 0 will be used (for details regarding creating a modulation profile and assigning it to an upstream channel, refer to “Configuring a Modulation Profile” on page 93). The available upstream channels on a DOCSIS Module are channels 0–7, and are assigned to the four upstream ports (0–3) on the HFC Connector Module by default as defined in Table 9 on page 63. Table 11 provides the valid ranges of all parameters specified in this section.

Parameter Range

slot 1–4, 10–13

interface 0–3

channel (=port) 0–3

frequency 91000000–857000000

RF power 500 to 610 (tenths dBmV)

modulation 64qam or 256qam

interleave depth 8, 16, 32, 64, 128


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Table 11: Upstream Channel Parameter Ranges

1. Specify a channel width of 200000 Hz for upstream channel 0:

G10$root(config-if-c1/0)# cable upstream 0 channel-width 200000↵

2. Specify a frequency of 5000000 Hz for upstream channel 0:

G10$root(config-if-c1/0)# cable upstream 0 frequency 5000000↵

3. Specify a power level (in dBmV) of 0 dBmV for upstream channel 0:

G10$root(config-if-c1/0)# cable upstream 0 power-level 0↵

4. Specify start and stop data backoff values of 2 and 6, respectively, for upstream channel 0:

G10$root(config-if-c1/0)# cable upstream 0 data-backoff 2 6↵

5. Specify start and stop range backoff values of 3 and 7, respectively, for upstream channel 0:

G10$root(config-if-c1/0)# cable upstream 0 range-backoff 3 7↵

6. Specify a minislot size of 8 for upstream channel 0:

G10$root(config-if-c1/0)# cable upstream 0 minislot-size 8↵

7. At this point, if you desire to view the upstream channel 0 parameters and status, enter the following command:

G10$root(config-if-c1/0)# cable upstream 0 show↵

8. Enable upstream channel 0:

G10$root(config-if-c1/0)# no cable upstream 0 shutdown↵

Parameter Range

slot 1–4, 10–13

interface 0–3

channel 0–7

port 0–3

channel width 200000–3200000 Hz

frequency 5000000–42000000 Hz

power-level -10 to +25 dBmV

data-backoff 0–16

range-backoff 0–16

modulation-profile 1–256

minislot-size 2, 4, 8, 16, 32, 64, 128

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67

Configuring Fast Ethernet Interfaces

The procedure in this section enables the two Fast Ethernet interfaces on the DOCSIS Module/HFC Connector Module pair in slot 1:

1. Exit back to the configure terminal mode:

G10$root(config-if-c1/0)# exit↵

2. Enter the interface fastEthernet sub-mode, specifying slot 1 and interface 0 for Fast Ethernet port 0:

G10$root(config)# interface fastEthernet 1/0↵

3. Enable Fast Ethernet port 0:

G10$root(config-if-f1/0)# no shutdown↵


G10$root(config-if-f1/0)# exit↵





Configuring a Management Interface

A management interface is established by using the Fast Ethernet port labeled “Eth0” on the Chassis Control Module. The following procedure describes how to configure this interface:


G10$root(config-if-f1/1)# exit↵

2. Assign an IP address of 192.177.122.3 for the default gateway for the management interface:

G10$root(config)# ip default-gateway 192.177.122.3 management↵



4. Assign an IP address of 192.177.122.1 and a subnet mask of 255.255.255.0 for slot 6/ interface 0:

G10$root(config-if-f6/0)# ip address 192.177.122.1 255.255.255.0↵


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69

Chapter 5Upgrading the G10 CMTS

This chapter describes the procedures for upgrading the hardware and software components of the G10 CMTS. The upgrade procedures for hardware components, such as power supplies and modules, consist of the removal and replacement of such components. This chapter only describes the former (removing hardware), while “G10 CMTS Installation” on page 19 describes the latter (installing hardware).

Removing Power Supplies

The power supplies in the G10 CMTS are designed to be hot-swappable, which means that the system can remain powered up while a power supply is being removed or installed.

The following procedure describes the steps required for removing a power supply:

1. The power supply faceplate must be removed by removing the four hex screws that fasten the faceplate to the two power supply faceplate brackets (an Allen wrench can be used for this purpose).

2. Loosen the upper and lower retainer screws of the power supply.

3. Press down on the ejector release while simultaneously pulling the ejector away from the power supply (refer to Figure 29 on page 70). The ejector should rest at approximately 45° from the faceplate. At this point, the power supply is physically and electrically removed from its connector on the midplane.

Before removing a power supply or any module from the G10 CMTS, attach one end of an ESD ground strap to your wrist and attach the other end to the ESD ground strap jack on the front of the chassis (refer to Figure 3 on page 5).

Before removing a power supply, ensure that the remaining power supplies in the system can provide enough power to service the requirements of the modules installed in the system. Refer to “Installing a DOCSIS Module” on page 31 for system power supply requirements.

Removing Power Supplies

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Figure 29: Power Supply Removal

4. Slowly slide the power supply out of its bay until it is fully removed from the system.

5. If the power supply will not be replaced, a power supply filler panel must be installed to cover the empty power supply bay. Align the panel over the bay opening so that the two self-contained screws are on the left side of the panel when installed in the chassis (refer to Figure 3 on page 5). Apply 3 in lb of torque to each of the two screws.

6. Repeat this process for all power supplies that must be removed.


3

Power

Fault

2

1

The power supply faceplate and power supply filler panels must be installed prior to powering on the G10 CMTS to ensure that proper air ventilation occurs throughout the chassis.

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Removing a DOCSIS Module

71

Removing a DOCSIS Module

This section describes the procedure for removing a DOCSIS Module. This module is hot-swappable which means that the system can remain powered up while it is being removed or installed.

1. Loosen the two retainer screws.

2. Press upward and downward on the ejector releases (action #1 in Figure 30 on page 72), but do not pull on the ejectors until the blue Hot Swap LED on the faceplate is illuminated (refer to Figure 27 on page 58).

3. After the Hot Swap LED is illuminated, simultaneously pull the ejectors away from the module faceplate. The ejectors should rest at approximately 45° from the faceplate. At this point, the DOCSIS Module is physically and electrically removed from its connectors on the midplane.

4. Slowly slide the module out of its slot until it is fully removed from the system.

5. Insert the module into an anti-static bag being careful to avoid directly touching any component on the module. Handling the module only by its card edges or ejectors is highly recommended.

6. If the module will not be replaced, an air management module that fills the module slot must be installed in its place (the procedure for installing this module is the same procedure as installing a DOCSIS Module; refer to “Installing a DOCSIS Module” on page 31).

If a DOCSIS Module is being hot swapped, this procedure assumes that all services supported by that module have been moved to another DOCSIS Module.

One of the ejector releases on the DOCSIS Module activates a microswitch that signals the module to condition itself for hot swapping.

Air management modules and air management panels must always be installed in empty slots while operating the G10 CMTS to ensure that proper air ventilation occurs throughout the chassis.

Removing an HFC Connector Module

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Figure 30: DOCSIS Module Removal

Removing an HFC Connector Module

This section describes the procedure for removing an HFC Connector Module. This module is hot-swappable which means that the system can remain powered up while it is being removed or installed.

1. Disconnect all cables that are attached to the module ports. If appropriate, label or tag each cable with its corresponding module port.


3. Press upward and downward on the ejector releases (action #1 in Figure 31 on page 73).

4. Simultaneously pull the ejectors away from the module faceplate. The ejectors should rest at approximately 45° from their locked position. At this point, the HFC Connector Module is physically and electrically removed from its connectors on the midplane.


21

1 2

3

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Removing a Chassis Control Module

73


7. If the module will not be replaced, an air management panel that covers the module slot must be installed in its place. Tighten the two retainer screws by applying 3 in lb of torque to each screw.

Figure 31: HFC Connector Module Removal

Removing a Chassis Control Module

This section describes the procedure for removing a Chassis Control Module. This module is hot-swappable which means that the system can remain powered up while it is being removed or installed.


3

Eth0

Eth1

US 3

US 2

US 1

US 0

DS 3

DS 2

DS 1

DS 01

1

2

2

Removing a CCM Access Module

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2. Press upward and downward on the ejector releases (this step is similar to action #1 in Figure 30 on page 72 for a DOCSIS Module), but do not pull on the ejectors until the blue Hot Swap LED on the faceplate is illuminated (refer to Figure 28 on page 60).

3. After the Hot Swap LED is illuminated, simultaneously pull the ejectors away from the module faceplate. The ejectors should rest at approximately 45° from the faceplate. At this point, the Chassis Control Module is physically and electrically removed from its connectors on the midplane.



6. If the module will not be replaced, an air management module that covers the module slot must be installed in its place (the procedure for installing this module is the same procedure as installing a NIC Module; refer to “Installing a Chassis Control Module” on page 35).

Removing a CCM Access Module

This section describes the procedure for removing a CCM Access Module. This module is hot-swappable which means that the system can remain powered up while it is being removed or installed.



3. Press upward and downward on the ejector releases (this step is similar to action #1 in Figure 31 on page 73 for an HFC Connector Module).

4. Simultaneously pull the ejectors away from the module faceplate. The ejectors should rest at approximately 45° from their locked position. At this point, the CCM Access Module is physically and electrically removed from its connectors on the midplane.




One of the ejector releases on the Chassis Control Module activates a microswitch that signals the module to condition itself for hot swapping.

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Removing a NIC Module

75

Removing a NIC Module

This section describes the procedure for removing a NIC Module. This module is hot-swappable which means that the system can remain powered up while it is being removed or installed.


2. Press upward and downward on the ejector releases (this step is similar to action #1 in Figure 30 on page 72 for a DOCSIS Module), but do not pull on the ejectors until the blue Swp LED on the faceplate is illuminated (refer to Figure 22 on page 46).

3. After the Hot Swap LED is illuminated, simultaneously pull the ejectors away from the module faceplate. The ejectors should rest at approximately 45° from the faceplate. At this point, the NIC Module is physically and electrically removed from its connectors on the midplane.



6. If the module will not be replaced, an air management module that covers the module slot must be installed in its place (the procedure for installing this module is the same procedure as installing a NIC Module; refer to “Installing a NIC Module” on page 36).

Removing a NIC Access Module

This section describes the procedure for removing a NIC Access Module. This module is hot-swappable which means that the system can remain powered up while it is being removed or installed.



3. Press upward and downward on the ejector releases (this step is similar to action #1 in Figure 31 on page 73 for an HFC Connector Module).

4. Simultaneously pull the ejectors away from the module faceplate. The ejectors should rest at approximately 45° from their locked position. At this point, the NIC Access Module is physically and electrically removed from its connectors on the midplane.


One of the ejector releases on the NIC Module activates a microswitch that signals the module to condition itself for hot swapping.

Replacing a Fan Tray

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If a fan tray LED is illuminated red, then one or more fans in that tray has failed and the entire fan tray must be replaced. The fan trays are hot swappable and can be removed and installed while the system is powered on.

If a fan tray fails to the point where inadequate air ventilation flows through the chassis, the Chassis Control Module may power down the system if the temperature within the chassis exceeds the threshold considered safe for system operation.

Front Fan Trays

This procedure describes how to replace a front fan tray (refer to Figure 32 on page 78).

1. The air intake faceplate must be removed by removing the four hex screws that fasten the faceplate to the two air intake faceplate brackets (an Allen wrench can be used for this purpose).

2. Each fan tray is held into place by two front fan tray retainers that reside on hinges. Each retainer contains a spring-loaded plunger that mates with the chassis when the retainer is locked into position. To unlock each of the retainers, pull down on their plungers and swing them away from the chassis until they come to a rest.

3. Grab the fan tray directly underneath the flange that houses its LED and slowly pull the tray out of its bay until it is fully removed from the system. Figure 32 on page 78 shows a populated and an empty front fan tray bay in the chassis (the front fan tray retainers are not shown in the empty bay so that the fan tray rails can be viewed).

4. Align the edges of the fan tray replacement within the chassis fan tray rails. Ensure that the fan tray edges are not seated above or below the rails, but are within the rails.

All fans within a fan tray contain top and bottom grills to provide protection during removal and installation. Nevertheless, care should be taken when inserting your hand anywhere in the vicinity of an operating fan.

Operating the G10 CMTS without fully-functional fan trays may cause irreparable damage or reduce the life of one or more modules in the system. A fully-loaded system can operate without one of its two front fan trays, or without the rear fan tray, for approximately 10 minutes or 20 minutes, respectively, before the Chassis Control Module powers down the system.

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77

5. Slowly slide the fan tray completely into its bay until its power connector mates with its corresponding midplane power connector. You should be able to see and hear the fans operating within the tray.

6. Each of the front fan tray retainers must be returned to its locked position by pulling down on their plungers, swinging the retainers toward the chassis, and releasing the plungers so that they mate with the chassis. If a plunger cannot mate with the chassis, then the fan tray is not fully installed into its bay.

7. Replace the air intake faceplate by aligning its mounting holes with the holes on the air intake faceplate brackets, inserting the four hex screws, and applying 6 in lb of torque to each of the screws. If there is not enough space on the side of the chassis to use a torque screwdriver, an Allen wrench can be used for this purpose.

Rear Fan Tray

This procedure describes how to replace a rear fan tray (refer to Figure 33 on page 79).

1. Loosen the eight self-contained thumbscrews that fasten the rear fan tray to the chassis.

2. Grab a thumbscrew on each end of the fan tray and slowly pull the tray out of its bay until it is fully removed from the system.

3. Align the fan tray replacement within the chassis. The rear fan tray flanges in the chassis assure proper alignment within the bay.

4. Slowly slide the fan tray completely into its bay until its power connector mates with its corresponding midplane power connector. You should be able to see and hear the fans operating within the tray.

5. Manually fasten the eight self-contained thumbscrews of the rear fan tray to the chassis, then apply 4 in lb of torque to each of the eight thumbscrews.


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Figure 32: Front Fan Tray Replacement

Fan TrayRail

MidplanePower

Connector

Fan TrayRail

Front FanTray Retainer

Front FanTray

RetainerPlunger

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Figure 33: Rear Fan Tray Replacement

1

2

KBD

MOUSE

RESET

FD HD

Eth0

Eth1

COM2

COM1

Eth0

Eth1

US 3

US 2

US 1

US 0

DS 3

DS 2

DS 1

DS 0

Eth0

Eth1

US 3

US 2

US 1

US 0

DS 3

DS 2

DS 1

DS 0

Fan TrayFlange

Fan TrayFlange

Rear Fan Tray

MidplanePower

Connector

MidplanePower

Connector

EX

T FA

ULT

INT

FAU

LTO

PE

RA

TIO

NA

LP

OW

ER


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••

Appendix AAgency Certifications
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This appendix lists agency compliance and certifications for the G10 CMTS.

UL 60950

FCC Part 15, Class A

Industry Canada ICES–003, Class A

This equipment is intended only for installation in a restricted access location within a building.

This equipment is intended for indoor use only.

This equipment does not have a direct copper connection to the outside plant.

Removal of power supplies or cards will result in access to hazardous energy.

Each power cord must be connected to an independent branch circuit.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

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Juniper Networks G10 CMTS Functional Description

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Appendix BHeadend Architecture

FiberUp

High-speedData

Telephony

Data

Video

Combinerand

SignalRouter

Audio / VideoDemod

BackboneTransportAdapter,Switch,LAN, or

Hub

LocalServerFacility

RemoteDial-UpAccessServer

InteractiveCable

Gateway

RemoteServerFacility

PSTN

Broadcast Channels:Satellite, Fiber,

Cable,Others

Upconverter

Upconverter

Upconverter

ATM

Splitter

AnalogVideo

DigitalVideo

Other

Combiner

54-750 MHz

5-42 MHz

BackboneNetwork

Head End

FiberDown

E/O O/E

Coax Cable

NetworkTermination

Demod

Mod

Upconverters

QAMData

OperationsSystemSupport

Security &AccessControl

CMTS

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85

Appendix CRadio Frequency (RF) Specifications

For reference purposes, Table 12 through Table 16 are reproduced from the CableLabs DOCSIS Radio Frequency Interface Specification, SP-RFI-I05-991105. For the complete DOCSIS specifications, please refer to the appropriate CableLabs document.

Table 12: Downstream RF Channel Transmission Characteristics

Parameter Value

Frequency range Cable system normal downstream operating range is from 50 MHz to as high as 860 MHz. However, the values in this table apply only at frequencies >= 88 MHz.

RF channel spacing (design bandwidth) 6 MHz

Transit delay from headend to most distant customer <= 0.800 msec (typically much less)

Carrier-to-noise ratio in a 6-MHz band (analog video level) Not less than 35 dB4

Carrier-to-interference ratio for total power (discrete and broadband ingress signals)

Not less than 35 dB within the design bandwidth

Composite triple beat distortion for analog modulated carriers Not greater than -50 dBc within the design bandwidth

Composite second order distortion for analog odulated carriers Not greater than -50 dBc within the design bandwidth

Cross-modulation level Not greater than -40 dBc within the design bandwidth

Amplitude ripple 0.5 dB within the design bandwidth

Group delay ripple in the spectrum occupied by the CMTS 75 ns within the design bandwidth

Micro-reflections bound for dominant echo -10 dBc @ <= 0.5 m sec, -15 dBc @ <= 1.0 m sec-20 dBc @ <= 1.5 m sec, -30 dBc @ > 1.5 m sec

Carrier hum modulation Not greater than -26 dBc (5%)

Burst noise Not longer than 25 m sec at a 10 Hz average rate

Seasonal and diurnal signal level variation 8 dB

Signal level slope, 50-750 MHz 16 dB

Maximum analog video carrier level at the CM input, inclusive of above signal level variation

17 dBmV

Lowest analog video carrier level at the CM input, inclusive of above signal level variation

-5 dBmV

1. Transmission is from the headend combiner to the CM input at the customer location.2. For measurements above the normal downstream operating frequency band (except hum), impairments are referenced to the

highest-frequency NTSC carrier level.3. For hum measurements above the normal downstream operating frequency band, a continuous-wave carrier is sent at the test frequency

at the same level as the highest-frequency NTSC carrier.4. This presumes that the digital carrier is operated at analog peak carrier level. When the digital carrier is operated below the analog peak

carrier level, this C/N may be less.5. Measurement methods defined in [NCTA] or [CableLabs2].

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Table 13: Upstream RF Channel Transmission Characteristics

Table 14: Downstream RF Signal Output Characteristics

Parameter Value

Frequency range 5 to 42 MHz edge to edge

Transit delay from the most distant CM to the nearest

CM or CMTS

<= 0.800 msec (typically much less)

Carrier-to-noise ratio Not less than 25 dB

Carrier-to-ingress power (the sum of discrete and

broadband ingress signals) ratio

Not less than 25 dB2

Carrier- to-interference (the sum of noise, distortion, common-path distortion and cross-modulation) ratio

Not less than 25 dB

Carrier hum modulation Not greater than -23 dBc (7.0%)

Burst noise Not longer than 10 msec at a 1 kHz average rate for most cases3,4,5

Amplitude ripple 5-42 MHz: 0.5 dB/MHz

Group delay ripple 5-42 MHz: 200 ns/MHz

Micro-reflections -- single echo -10 dBc @ <= 0.5 m sec-20 dBc @ <= 1.0 m sec-30 dBc @ > 1.0 m sec

Seasonal and diurnal signal level variation Not greater than 8 dB min to max

1. Transmission is from the CM output at the customer location to the headend.2. Ingress avoidance or tolerance techniques MAY be used to ensure operation in the presence of time-varying discrete ingress signals that

could be as high as 0 dBc [CableLabs1].3. Amplitude and frequency characteristics sufficiently strong to partially or wholly mask the data carrier.4. CableLabs report containing distribution of return-path burst noise measurements and measurement method is forthcoming.5. Impulse noise levels more prevalent at lower frequencies (< 15 MHz).

Parameter Value

Center Frequency (fc) 91 to 857 MHz ± 30 kHz1

Level Adjustable over the range 50 to 61 dBmV

Symbol Rate (nominal)64QAM256QAM

5.056941 Msym/sec5.360537 Msym/sec

Nominal Channel Spacing 6 MHz

Frequency response64QAM256QAM

~18% Square Root Raised Cosine shaping~12% Square Root Raised Cosine shaping

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Table 15: DOCSIS Downstream Channel Rates and Spacing

Table 16: DOCSIS Maximum Upstream Channel Rates and Widths

Total Discrete Spurious Inband (fc ± 3 MHz)

Inband Spurious and Noise (fc ± 3 MHz)

Adjacent channel (fc ± 3.0 MHz) to (fc ± 3.75 MHz)

Adjacent channel (fc ± 3.75 MHz) to (fc ± 9 MHz)

Next adjacent channel (fc ± 9 MHz) to (fc ± 15 MHz)

Other channels (47 MHz to 1,000 MHz)

< -57dBc

< -48dBc; where channel spurious and noise includes all discrete spurious, noise, carrier leakage, clock lines, synthesizer products, and other undesired transmitter products. Noise within +/- 50kHz of the carrier is excluded.

< -58 dBc in 750 kHz

< -62 dBc, in 5.25 MHz, excluding up to 3 spurs, each of which must be <-60 dBc when measured in a 10 kHz band

Less than the greater of -65 dBc or -12dBmV in 6MHz, excluding up to three discrete spurs. The total power in the spurs must be < -60dBc when each is measured with 10 kHz bandwidth.

< -12dBmV in each 6 MHz channel, excluding up to three discrete spurs. The total power in the spurs must be < -60dBc when each is measured with 10kHz bandwidth.

Phase Noise 1 kHz - 10 kHz: -33dBc double sided noise power

10 kHz - 50 kHz: -51dBc double sided noise power

50 kHz - 3 MHz: -51dBc double sided noise power

Output Impedance 75 ohms

Output Return Loss > 14 dB within an output channel up to 750 MHz; > 13 dB in an output channel above 750 MHz

Connector F connector per [IPS-SP-406]

1. ±30 kHz includes an allowance of 25 kHz for the largest FCC frequency offset normally built into upconverters.

Nominal Symbol Rate(Msym/sec)

Nominal Channel Spacing(kHz) Bit Rate (bps)

5.056941 (64QAM) 6000 30,341,646

5.360537 (256QAM) 6000 42,884,296

Symbol Rate(ksym/sec)

Channel Width(kHz)1

Bit-rate/sec(QPSK)

Bit-rate/sec(16QAM)

160 200 320,000 640,000

320 400 640,000 1,280,000

640 800 1,280,000 2,560,000

1,280 1,600 2,560,000 5,120,000

2,560 3,200 5,120,000 10,240,000

1. Channel width is the -30 dB bandwidth.

Parameter Value

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Appendix DCoaxial Cable Requirements

To achieve optimal RF performance, and to minimize the potential damage of the F-connectors on the HFC Connector Modules, Juniper Networks recommends that the coaxial cable types listed in Table 17 be used.

Table 17: Coaxial Cable Requirements

Any of the cable types listed in Table 17 can be used initially. However, if a cable in a particular F-connector is replaced, it is recommended that the replacement cable have the same, or larger, center conductor diameter than the original cable. This ensures that proper contact between the cable conductor and an F-connector will be maintained.

If a replacement cable has a smaller center conductor diameter than the original cable—for example, replacing an RG-6 cable with an RG-59U—the smaller RG-59U cable conductor may not make adequate contact with an F-connector, which can potentially lead to a partial or complete loss of the signal.

Cable Type Diameter of Center Conductor

RG-59/U 0.57 mm (0.022 in)

RG-59 0.86 mm (0.034 in)

RG-6 1.05 mm (0.041 in)

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Appendix EGBIC Interface Specifications

The specifications for the various GBIC interfaces provided by the NIC Module are listed in Table 18 through Table 21.

Table 18: Single Mode, Long Range GBIC Specifications

Table 19: Single Mode, Midrange GBIC Specifications

Parameter Value

Transmitter type Longwave laser, 1550 nm

Range 80 Km

Average launch power -4 dBm min-1 dBm max

Transmitter extinction ratio 9 dB min

Data format 8B / 10B

Average receive power -25.5 dBm min-1 dBm max

Optical output power -35 dBm min

Connector Duplex SC

Regulatory Class 1 devices per FDA/CDRH and IEC-825-1 laser safety regulations

Parameter Value

Transmitter type Longwave laser, 1310 nm

Range 10 Km

Average launch power -8 dBm min-3 dBm max



Average receive power -19 dBm min-26.5 dBm typical-3 dBm max

Optical output power -35 dBm min

Connector Duplex SC


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Table 20: Multi Mode GBIC Specifications

Table 21: Copper GBIC Specifications

Parameter Value

Transmitter type Shortwave laser, 850 nm

Range 550 m

Average launch power (62.5 µm MMF)

-9.5 dBm min-5 dBm max



Average receive sensitivity -22 dBm typical-20.5 dBm max

Optical output power -35 dBm max

Connector Duplex SC

Total Tx jitter contribution 45 psec typical

Total Tx+Rx jitter contribution 50 psec typical

Output rise/fall time 120 psec typical


Parameter Value

Data Rate 1000Base T

Connector RJ-45

Transmitter type CAT 5 twisted pair

Power requirements 3.3 to 5.0 VDC

1.0 A (max)

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IndexIndex

Numerics10/100BASE ................................................................371-Gigabit................................................................45, 48

Aaccessory kit................................................................15agency certifications....................................................81air exhaust ............................................................10, 20air intake ...........................................................9, 20, 56

faceplate ..........................................................9, 76faceplate bracket ....................................................9faceplate brackets ................................................76

air management module .......3, 9, 17, 31, 56, 71, 74, 75air management panel ........3, 10, 17, 31, 56, 73, 74, 76air ventilation ....................13, 15, 20, 28, 56, 70, 71, 76alarm cutoff.................................................................59autosensing .................................................................52

BBits per second............................................................61

Ccablecoaxial................................................38, 39, 41, 89Network Access Module .......................................17optical ..................................................................45

cable channel ..............................................9, 17, 43, 45cable guide ....................................................................9cable plant.............................................................38, 41card cage.....................................................................35card guide .................................9, 13, 26, 32, 34, 36, 37card slot ......................................................................33CCM Access Module ................................3, 9, 35, 36, 74certifications................................................................81channel .......................................................................38

width....................................................................66channels ........................................................................2chassis.........................................3, 9, 19, 22, 31, 52, 53

air ventilation .......................................................56grounding.............................................................13

installing modules ..........................................31–37lifting....................................................................11mounting..............................................................20

Chassis Control Module ...............3, 8, 35, 51, 58, 73, 76chassis ground nuts .................................................9, 19CLI see Command Line InterfaceCommand Line Interface .............................................62configuration ...............................................................62

Ddata backoff.................................................................66Data bits ......................................................................61DB-25 ..........................................................................51DB-9 ............................................................................51DOCSIS

RFI Specifications .................................................85DOCSIS Module ...........................3, 8, 31, 32, 41, 56, 71document conventions ................................................xiiDomain .....................................................26, 31, 35, 36downstream ..............................................37, 38, 64, 65

Eejector .....................26, 31–33, 35, ??–37, 71, 73, ??–76equipment shelf.....................................................21, 22ESD

ground strap.............................................13, 19, 69strap jack........................................................13, 19strap plug ...............................................................9

Ethernet.....................................................37, 41, 45, 49

Ffan tray................................9, 10, 13, 18, 55, 56, 76, 77F-connector .....................................................38, 39, 89flow control .................................................................61

GG10 CMTSfeatures ..................................................................2functional overview ................................................1

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GBIC................................................................ 45, 91, 92ground .................................................................. 13, 31

Hheadend ........................................................................ 1HFC Connector Module ..3, 9, 31, 33, 34, 37–41, 48–49,

72

I IEC ..............................................................................52interleave depth .......................................................... 65

LLEDACO ..................................................................... 59Chassis Control Module........................................ 59Critical ................................................................. 59DOCSIS Module.................................................... 57EXT FAULT .......................................................... 61EXT FLT ............................................................... 61FAULT.................................................................. 55front fan tray.................................................... 9, 56Hot Swap ..................................... 57, 59, 61, 71, 74INT FAULT ........................................................... 61INT FLT ................................................................61Major ................................................................... 59Minor ................................................................... 59OK ....................................................................... 60OPERATIONAL..................................................... 61POWER................................................................55Power .................................................................. 58power supply ....................................................... 56PWR..................................................................... 61rear fan tray ................................................... 10, 56RTM ..................................................................... 61Swp...................................................................... 75Test...................................................................... 56

logout .......................................................................... 62

Mmidplane........................................................... 9, 13, 27minislot size ................................................................66modulation.................................................................. 65module ejector rail .......................... 9, 32, 34, 35, 36, 37mounting bracket........................................................ 22

NNetwork Access Module .............................................. 37NIC Access Module............................ 3, 9, 48, 49, 61, 75NIC Module ................................. 3, 8, 36, 41, 45, 60, 61node...................................................................... 38, 40

Ooptical .........................................................................45over-current.................................................................58

PParity...........................................................................61password.....................................................................64PC .........................................................................51, 61port

1-Gigabit...............................................................45DB-25...................................................................51DB-9.....................................................................51downstream.........................................................38Ethernet .............................................37, 41, 45, 49F-connector ..............................................38, 39, 89GBIC.....................................................................45RJ-21 ....................................................................48RJ-45 .........................................................41, ??–49RS-232 .................................................................51serial ..............................................................51, 61upstream..............................................................41

power cord ............................................................12, 52power level..................................................................66power receptacle

AC ..................................................................10, 52DC........................................................................10

power source...................................................52, 55, 56power supply.....................................3, 9, 11, 15, 56, 69

alignment.......................................................13, 26bay.............................................................9, 26, 56ejector rail ........................................................9, 26faceplate ..........9, 15, 20, 26, 28, 43, 45, 55, 69, 70faceplate bracket....................................................9failure...................................................................25filler panel ........................................3, 9, 26, 56, 70installation ...............................................19, 25, 28redundancy..........................................................25removal..........................................................69, 70

power switch...............................................................12AC ............................................................10, 52, 55

power transition module .............................................29AC ............................................................10, 52, 55DC..................................................................10, 53

Rrack mount............................................................11, 20range backoff ..............................................................66redundancy .....................................................52, 53, 56RF power.....................................................................65RG-59 ..........................................................................89RG-59/U.......................................................................89RG-6 ............................................................................89RJ-21 .....................................................................48, 49RJ-45 ................................................................41, ??–49

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running-config file .......................................................64

Sservice flows..................................................................2shipping carton .........................................11, 15, 16, 20short circuit .................................................................58shutdown ....................................................................56startup-config file.........................................................64Stop bits ......................................................................61system capacity.............................................................2

Ttemperature ................................................................56terminal emulation................................................61, 62

Uupstream.............................................37, 38, 41, 65, 66username ....................................................................64

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Documents

Juniper Networks G10 CMTS · xii Juniper Networks G10 CMTS Installation and Configuration Appendix D, “Coaxial Cable Requirements” – Provides coaxial requirements for usage