OPCOM3103 Configuration Guide 200907

www.raisecom.com

OPCOM3103 Configuration Guide

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Contact Information

Technical Assistance Center

The Raisecom TAC is available to all customers who need technical assistance with a Raisecom product, technology, or, solution. You can communicate with us through the following methods:

Address: Building 2, No. 28 of the Shangdi 6th Street, Haidian District, Beijing 100085

Tel: +86-10-82883305

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Comments and questions about how the OPCOM3103 device works are welcomed. Please review the FAQ in the related manual, and if your question is not covered, send email by using the following web page:

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We hope to hear from you!

CONTENTS Chapter 1 System Overview -------------------------------------------------------------------------- 1 Chapter 2 How to Use The Command Line------------------------------------------------------ 2

2.1 Software and hardware environment------------------------------------------------------------------------------2 2.2 Getting helps ------------------------------------------------------------------------------------------------------------2 2.3 How to use history command ---------------------------------------------------------------------------------------3 2.4 How to use edit performance----------------------------------------------------------------------------------------3 2.5 Command line mode --------------------------------------------------------------------------------------------------3

Chapter 3 System Commands Configuration--------------------------------------------------- 4 3.1 Basic system commands and configuration---------------------------------------------------------------------4 3.2 Management of configuring file and startup file ----------------------------------------------------------------4

3.2.1 Configure startup file ------------------------------------------------------------------------------------------------------------------- 4 3.2.2 Host file ------------------------------------------------------------------------------------------------------------------------------------ 4 3.2.3 Update host software from bootrom------------------------------------------------------------------------------------------------ 4 3.2.4 Update host software in Privileged EXEC mode -------------------------------------------------------------------------------- 8

3.3 User management -----------------------------------------------------------------------------------------------------9 Chapter 4 Network Protocol Configuration-----------------------------------------------------10

4.1 Mappings from IP address to physical address --------------------------------------------------------------10 4.2 Configure IP address of SNMP interface-----------------------------------------------------------------------10 4.3 Configure a static routing------------------------------------------------------------------------------------------- 11 4.4 Configure SNMP COMMUNITY table---------------------------------------------------------------------------12 4.5 Configure SNMP trap-server host--------------------------------------------------------------------------------13

Chapter 5 Timeslot Assignment--------------------------------------------------------------------14 Chapter 6 Protection Configuration --------------------------------------------------------------16 Chapter 7 Clock Configuration ---------------------------------------------------------------------17

7.1 Related commands --------------------------------------------------------------------------------------------------17 7.2 Configure synchronous chain network--------------------------------------------------------------------------17

7.2.1 Chain topology configuration------------------------------------------------------------------------------------------------------- 17 7.3 Configure ring synchronous network ----------------------------------------------------------------------------18

7.3.1 Single BITS configuration ----------------------------------------------------------------------------------------------------------- 18 7.3.2 Dual BITS ring configuration ------------------------------------------------------------------------------------------------------- 19 7.3.3 Self-loop network of OPCOM3103 ----------------------------------------------------------------------------------------------- 20

Chapter 8 Network Topology------------------------------------------------------------------------22 8.1 Overview----------------------------------------------------------------------------------------------------------------22 8.2 Point-to-point topology ----------------------------------------------------------------------------------------------22 8.3 Chain topology --------------------------------------------------------------------------------------------------------22 8.4 Ring topology----------------------------------------------------------------------------------------------------------23

8.4.1 2F SNC-P ------------------------------------------------------------------------------------------------------------------------------- 23 Chapter 9 Typical Application-----------------------------------------------------------------------24

9.1 In-band network management channel configuration-------------------------------------------------------24 9.1.1 DCC network management channel --------------------------------------------------------------------------------------------- 24

Appendix A Acronyms ------------------------------------------------------------------------------------27

Preface

About This Manual

This manual introduces primary functions of the configuration management software for OPCOM3103 products. This manual is applicable for configuring software of OPCOM3103.

Who Should Read This Manual

This manual is a valuable reference for sales and marketing staff, after service staff and telecommunication network designers. For those who want to have an overview of the features, applications, structure and specifications of OPCOM3103 devices, this is also a recommended document.

Relevant Manuals

OPCOM3103 Commands Notebook

Organization

There are mainly 11 chapters in this guide:

Chapter 1: SYSTEM OVERVIEW

Systematically introduces function features of OPCOM3103 device.

Chapter 2: HOW TO USE COMMANDS LINE

Introduces basic method and using characteristics of using command line to configure OPCOM3103

Chapter 3: SYSTEM COMMANDS CONFIGURATION

Focus on function and configuration of system commands of OPCOM3103.

Chapter 4: NETWORK PROTOCOLS CONFIGURATION

Mainly introduces function and configuration of network protocol of OPCOM3103

Chapter 5: TIMESLOT ASSIGNMENT

Introduces configuration of timeslot assignment on OPCOM3103

Chapter 6: PROTECTION CONFIGURATION

Introduces function and configuration of protection in OPCOM3103

Chapter 7: CLOCK CONFIGURATION

Introduces clock configuration of OPCOM3103

Chapter 8: NETWORK TOPOLOGY

Introduces how to use OPCOM3103 for network topology

Chapter 9: TYPICAL APPLICATION

Some configuration applications of OPCOM3103

Compliance

The RC series products developed by Raisecom are strictly complied with the following standards as well as ITU-T, IEEE, IETF and related standards from other international telecommunication standard organizations:

YD/T900-1997 SDH Equipment Technical Requirements - Clock

YD/T973-1998 SDH 155Mb/s and 622Mb/s Technical conditions of optical transmitter module and receiver module

YD/T1017-1999 Network node interface for the Synchronous Digital Hierarchy (SDH)

YD/T1022-1999 Requirement of synchronous digital hierarchy (SDH) equipment function

YD/T1078-2000 SDH Transmission Network Technique Requirements-Interworking of Network Protection Architectures

YD/T1111.1-2001 Technical Requirements of SDH Optical Transmitter/Optical Receiver Modules——2.488320 Gb/s Optical Receiver Modules

YD/T1111.2- 2001 Technical Requirements of SHD Optical Transmitter/Optical Receiver Modules——2.488320 Gb/s Optical Transmitter Modules

YD/T1179- 2002 Technical Specification of Ethernet over SDH

G.703 Physical/electrical characteristics of hierarchical digital interfaces

G.704 Synchronous frame structures used at 1544, 6312, 2048, 8448 and 44 736 kbit/s hierarchical levels

G.707 Network node interface for the synchronous digital hierarchy (SDH)

G.774 Synchronous digital hierarchy (SDH) - Management information model for the network element view

G.781 Synchronization layer functions

G.783 Characteristics of synchronous digital hierarchy (SDH) equipment functional blocks

G.784 Synchronous digital hierarchy (SDH) management

G.803 Architecture of transport networks based on the synchronous digital hierarchy (SDH)

G.813 Timing characteristics of SDH equipment slave clocks (SEC)

G.823 The control of jitter and wander within digital networks which are based on the 2048 kbit/s hierarchy

G.825 The control of jitter and wander within digital networks which are based on the synchronous digital hierarchy (SDH)

G.826 End-to-end error performance parameters and objectives for international, constant bit-rate digital paths and connections

G.828 Error performance parameters and objectives for international, constant bit-rate synchronous digital paths

G.829 Error performance events for SDH multiplex and regenerator sections

G.831 Management capabilities of transport networks based on the synchronous digital hierarchy (SDH)

G.841 Types and characteristics of SDH network protection architectures

G.842 Interworking of SDH network protection architectures

G.957 Optical interfaces for equipments and systems relating to the synchronous digital hierarchy

G.691 Optical interfaces for single channel STM-64 and other SDH systems with optical amplifiers

G.664 Optical safety procedures and requirements for optical transport systems

I.731 ATM Types and general characteristics of ATM equipment

I.732 ATM Functional characteristics of ATM equipment

IEEE 802.1Q Virtual Local Area Networks (LANs)

IEEE 802.1p Traffic Class Expediting and Dynamic Multicast Filtering

IEEE 802.3 CSMA/CD Access Method and Physical Layer Instruction

www.raisecom.com User Manual

1

Chapter 1 System Overview

OPCOM3103 is a SDH Multi Service Access Device that implement SDH 155M upstream in line side. It can be used as remote device of OPCOM3500E to connect with OPCOM3500E SDH tributary unit. The service side provides 4 Ethernet interfaces by EOS to fulfill accessing of Ethernet service and access 32 E1 to SDH. Expanding slot of the device can connect with OPCOM3103-SUB2STM1 series sub-module of Raisecom to provide users flexible solutions for service accessing. 1+1 path protection and multiplex section protection functions are available in this device. The network maintenance and management is realized by DCC in-band network management path of STM-1.


2

Chapter 2 How to Use The Command Line

This chapter is consisted of:

Software and hardware environment Getting helps How to use history command How to use edit performance Command line mode

This chapter mainly introduces uses of command line. When configuring OPCOM3103 system, device SNMP address, community, DCC network management path need to be configured, other service configurations are recommended to accomplish by EMS (Element Management System).

2.1 Software and hardware environment

Operation environment of hardware: platform of OPCOM3103

Computer serial baud rate;

Operation environment of software: WIN98/WIN2000/WINDOWS XP

2.2 Getting helps

Table 1 Help system of command line

commands Function description

help Getting a brief description from help system.

abbreviated-command-entry

?

Obtaining a list of commands that begins with a given string (abbreviated-command-entry). For example:

OPCOM3103#en ? english

abbreviated-command-entry<Tab>

Supplementing an unfinished command. For example: OPCOM3103#show cpu <TAB>

OPCOM3103#show cpu-utilization-ratio

?

Listing all the commands in this mode. For example: OPCOM3103#？

command ? Listing all the key words, options and brief help information of a command. OPCOM3103#show ?


3

2.3 How to use history command

There are 20 history commands in the memory of the device system by default. User can configure the number of history commands that system can save by the command line:

OPCOM3103> terminal history <0-20>

Use history to show commands that has been input.

2.4 How to use edit performance

up arrow: last command down arrow: next command left arrow: move a character left right arrow: move a character right backspace: delete a character in front of the cursor Ctrl+y: show historical commands Ctrl+l: clear the screen Ctrl+u: show the using condition of the memory Ctrl+z: return to the privileged EXEC mode from different unprivileged modes

2.5 Command line mode

Mode Mode description Access Prompts

User EXEC Configuring the basic information

and show the parameters etc. at terminal device.

Login the device and input the user name and password. Raisecom>

Privileged EXEC

Configuring the basic information such as system time and show the

parameters but not the running information of OPCOM3103

Input enable command under user EXEC mode. Raisecom #

Global configuration

Configuring running parameters of OPCOM3103

Input config command under Privileged EXEC mode. Raisecom (config)#

Slot configuration

Configuring running parameters of OPCOM3103 slots.

Input slot command under Global configuration mode.

Raisecom (config-slot/PATH)#

PATH: slot path

Interface configuration

Configuring parameters of Ethernet network management interface,

SDH interface, E1 interfaces, ETH interfaces, SWITCH interface and

EOS interfaces.

Input interface command under Global configuration

mode, slot index configuration mode or

Remote configuration mode.

Raisecom (config-TYPE/PATH)# TYPE: interface type, like eth, stm, e1,etc. PATH: interface index.

Note: Regulation for device path:

Slot Path: n means slot number; main-card slot for 0, sub-card slot for 1;

Interface Index: at CO interface for “slot path/port ID”, while remote interface for “remote device path/port ID”.


4

Chapter 3 System Commands Configuration


Basic system commands and configuration Management of configuring file and startup file User management

This chapter describes basic configuration and user management of system.

3.1 Basic system commands and configuration

chinese show help information of the command in Chinese

english show help information of the command in English

clear clear the information on the screen

list show the list of all the commands in one mode

clock set change the system time

3.2 Management of configuring file and startup file

3.2.1 Configure startup file Startup file to configure is named: startup-config.conf by default; Use the command write can write the startup file into flash file system, when reboot system

next time, the store files will be configured again; Use the command erase can delete file; Startup file named startup-config.conf can be uploaded to TFTP or FTP server by the

command upload or be downloaded to the system to replace the primary files by the command download;

Use the command show startup-config to show configuration information of startup files; Use the command show running-config to show configuration information of current

system.

3.2.2 Host file The host file belongs to host software, the file name begins with OPCOM3103 and the current system program file is named OPCOM3103.z;

Program file can be downloaded to host software of system by TFTP or FTP protocol;

Use the command show version to view the software version.

3.2.3 Update host software from bootrom Two methods can be chosen to update host software from bootrom, one is to update from serial port


5

by Xmodem protocol, the other one is to update from network by FTP protocol. Operations as below steps:

1) Users who has administrator right logs in Privileged EXEC mode by serial port;

2) Input command reboot;

3) Press <Space> key to enter [raisecom] interface, show below information:

? show this list

h show this list

i modify network manage port ip address

s show network manage interface information

d delete core file

u update your system

m update microcode

r reboot system

test test the hardware

4) Input u to update system, the interface shows as below:

choose mode for updating core file.

-----------------------------------

- 1. | serial -

-----------------------------------

- 2. | network -

-----------------------------------

please input choose the mode...

5) Input i to choose serial baud rate for updating:

choose serial baud rate for updating core file.

-----------------------------------

- 1. | 9600 -

-----------------------------------

- 2. | 14400 -

-----------------------------------

- 3. | 19200 -

-----------------------------------

- 4. | 38400 -

-----------------------------------

please input choose the baud rate...

6) After entering the chosen baud rate, the system is waiting to transmit upgrade file through the serial port, now press [Transfer] as below figure shows:


6

Figure 1

Choose the file to transmit:

Figure 2

Press <Browse> to choose the program file to be downloaded, press <Send> then shows the below interface:


7

Figure 3

After downloading there will be the command-line:

Do you want to update core code? <Y/N>y

Choose y to finish the program upgrading.

Upgrade the program file through network via FTP protocol:

1) The user with administrator privilege can login and enter the privileged EXEC mode through the serial port;

2) Enter the command reboot;

3) Press <Space> key to enter the [raisecom] interface, enter “?” to show the command list.

? show this list

h show this list

e erase Flash

i modify network manage port ip address

c choose default image file

s show network management interface information

u update your system

m update microcode

r reboot system

D: Enter “u” to upgrade program file, the interface is as follows:

choose mode for updating core file.

-----------------------------------

- 1. | serial -

-----------------------------------


8

- 2. | network -

-----------------------------------

please input mode choose...

E: Enter “2” to choose network for downloading, the interface is as follows:

starting config network infor ...

host ip address: 192.168.2.225

filename: OPCOM3103..z

usr: wrs

passwd: wrs

Input host IP address, file name, user name and password of FTP in turn, and then get into the interface as follows:

starting connect host, please wait...

Now the program upgrade has been finished.

3.2.4 Update host software in Privileged EXEC mode Users can download host software directly under Privileged EXEC mode.

1) The user with administrator privilege can login and enter the privileged EXEC mode through the serial port;

2) Input download system-boot ftp to update host software through FTP protocol;

3) Below interface shows after executing the command:

Please input server IP Address : 192.168.4.28

Please input FTP User name : wrs

Please input FTP Password : wrs

Please input FTP Server File Name : OPCOM3103.z

Are you sure[Y/N]:y

Loading, please wait...

Input host IP address, file name, user name and password of FTP in turn, and then get into the interface as follows:

Are you sure[Y/N]:y

Input y to confirm the operation is correct, then shows the below interface:

Loading, please wait...file length = 1884532

Please select the disk for saving image

1. core:

2. exit


9

Please input the number: 1

Input 1 to choose updating program:

Writing to core disk, please wait...

Copy file successfully!

Please reboot device!

Now the program upgrade from FTP has finished.

3.3 User management

Commands Description

user USERNAME password

（no-encryption|md5）

PASSWORD

Add username and set password.

USERNAME: user name;

(no-encryption|md5}: encryption item.

no-encryption, no-encryption;

md5, md5, arithmetic encryption password;

PASSWORD: password

user USERNAME privilege

(administrant|normal|limited)

Set user privilege

USERNAME: user name;

(administrant|normal|limited): user privilege level.

Administrant, system administrator; normal，normal user;

limited, limited user.

write Save the configuration information

show user Show the user information

Table 3-1 User Management Commands Table

Note: System default user name: raisecom, pin code: raisecom.

Example: Add a normal user named OPCOM3103, pin code: OPCOM3103, no-encrtyption the password.

OPCOM3103# user OPCOM3103 password no-encryption OPCOM3103

Set successfully !

please execute "write" to save!

OPCOM3103# user OPCOM3103 privilege normal

Set successfully !

please execute "write" to save!


10

Chapter 4 Network Protocol Configuration

4.1 Mappings from IP address to physical address


config Enter the global configuration mode

arp add A.B.C.D MACADDRESS Add a mapping from IP address to physical address. A.B.C.D the IP address of the interface; MACADDRESS: <AA.BB.CC.DD.EE.FF>, the port’s physical address for mapping.

exit Exit from the global configuration mode and enter the privileged EXEC mode

show arp Show ARP table

Table 4-1 ARP Commands Table

Note: Use command arp delete A.B.C.D to delete a mapping from IP address to physical address.

Example: Add a mapping from IP 192.168.2.11 to physical address 00:50:8d:46:fb:3

OPCOM3103# config

Configuration mode, one command input per times. End with CTRL-Z.

OPCOM3103(config)# arp add 192.168.2.11 00:50:8d:46:fb:3

Successfully add an entry from ARP table

OPCOM3103(config)# exit

OPCOM3103# show arp

LINK LEVEL ARP TABLE

destination mac-addr flags(0x)Rfc Use Interface

--------------------------------------------------------------------------

192.168.2.11 00:50:8d:46:fb:3 c05 0 0 hw0

--------------------------------------------------------------------------

4.2 Configure IP address of SNMP interface

Sometimes users need to change network management IP address, in this case, IP Address command can be used to modify IP address of network management.


config Enter the global configuration mode.

interface snmp Enter snmp interface configuration mode.


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ip address A.B.C.D [Ａ.B.C.D] Configure network management IP address. A.B.C.D : IP address of network management, decimal digit; [Ａ.B.C.D] : sub-net mask of network management IP address, decimal digit.

Table 4-2 SNMP Network Management IP Commands Table

Example: Configure IP of network management to be 192.168.2.20 and sub-net mask to be 255.255.255.0

OPCOM3103# config


OPCOM3103(config)#interface snmp

OPCOM3103(config-snmp)#ip address 192.168.2.20 255.255.255.0

OPCOM3103(config-snmp)# show interface snmp

Interface:snmp Operation Status :up

4.3 Configure a static routing


config Enter global configuration mode.

ip route A.B.C.D A.B.C.D A.B.C.D Configure network management IP address. A.B.C.D: sub-net or host IP of destination network, decimal digit. A.B.C.D: sub-net mask or host IP mask of destination network, decimal digit. A.B.C.D: network gate IP address, decimal digit.

exit Exit global configuration mode and enter Privileged EXEC mode.

show ip route Show IP route information.

Table 4-3 Static Routing Configuration Table

Use global configuration command no ip route A. B. C. D. A. B. C. D.. The first group of A.B.C.D is destination IP, the second group of A.B.C.D is destination IP mask.

Example: Configure a static routing from source IP 192.168.4.250 to destination IP 192.168.2.18

OPCOM3103# config


OPCOM3103(config)# ip route 192.168.2.18 255.255.255.0 192.168.4.250

Successfully add a route

OPCOM3103(config)# show ip route

ROUTE NET TABLE

destination gateway flags(0x)Rfc Use pro Interface

--------------------------------------------------------------------------

2.2.2.0/24 2.2.2.2 2010003 0 0 8 ppp1

3.3.3.0/24 3.3.3.3 2010003 0 0 8 ppp2

192.168.2.0/24 192.168.4.250 2010003 0 0 1 sng0


12

192.168.4.0/24 192.168.4.100 2000101 2 0 2 sng0

192.168.4.0/24 192.168.4.100 10101 0 0 8 sng0

--------------------------------------------------------------------------

ROUTE HOST TABLE

destination gateway flags(0x)Rfc Use pro Interface

--------------------------------------------------------------------------

2.2.2.2 192.168.4.100 2000005 1 1 2 ppp1

2.2.2.2 192.168.4.100 5 0 0 8 ppp1

3.3.3.3 192.168.4.100 2000005 1 1 2 ppp2

3.3.3.3 192.168.4.100 5 0 0 8 ppp2

127.0.0.1 127.0.0.1 2200005 0 0 2 lo0

192.168.4.100 127.0.0.1 2000005 0 0 8 lo0

--------------------------------------------------------------------------

4.4 Configure SNMP COMMUNITY table



snmp-server community

COMMUNITYNAME [RO | RW]

Add a community. COMMUNITYNAME : community name； RO: read only; RW: ready and write.

exit Exit global configuration and enter Privileged EXEC mode.

show snmp-server community Show COMMUNITY table.

Table 4-4 Configure SNMP Community

Use global configuration command no snmp-server community COMMUNITYNAME to delete a community.

Example: Add a community named raisecom with privilege of read and write.

OPCOM3103# config

Configuration mode, one command input per time. End with CTRL

OPCOM3103(config)# snmp-server community raisecom rw

Set snmp community name successfully


OPCOM3103# show snmp-server community

ID COMMUNITYNAME RIGHT

------------------------------

1 public ro


13

2 private rw

3 raisecom rw

4.5 Configure SNMP trap-server host

The trap-server is responsible to receive TRAP, default pot is 162.



snmp trap-server A.B.C.D

{<1-65535>}

Configure a SNMP to be trap-server. A.B.C.D : IP of trap-server, in format of decimal digit; {<1-65535>}: port index of trap-receiving.

exit Exit global configuration mode and enter Privileged EXEC mode.

show snmp trap-server Show information of trap-server host.

Table 4-5 Configure SNMP Trap-server

Use the global configuration command no snmp trap-server A.B.C.D to delete a trap-server.

Example: Add a trap-server with IP of 192.168.1.16

OPCOM3103# config

Configuration mode, one command input per time. End with CTRL

OPCOM3103(config)# snmp trap-server 192.168.1.16

Set trap server successfully


OPCOM3103# show snmp trap-server

Trap server:

ADDRESS PORT

---------------------

192.168.1.16 162


14

Chapter 5 Timeslot Assignment

This chapter introduces the configuration of timeslot assignment.



slot <0-1> Enter into the slot mode. interface (e1/eos) Enter into the interface mode. timeslot add sdh <1-2> (vc12|vc3) TSSTRING

Assign backboard timeslot for the port. sdh <1-2>: the exit of the service. (vc12|vc3): timeslot level, now vc12 and vc3 are available. TSSTRING: timeslot index.

timeslot add sdh <1-2> (vc12/vc3) SDHTSSTRING SVCTSSTRING

Assign backboard timeslot for the port. sdh <1-2>: the exit of the service. (vc12|vc3): timeslot level, now vc12 and vc3 are available. SVCTSSTRING: timeslot index. SDHTSSTRING: timeslot index.

show timeslot Show timeslot assigning information.

Timeslot assignment at different service interfaces:

EOS interface timeslot assignment

OPCOM3103 has 8 EOS interfaces; each EOS can assign VC12 or VC3 type timeslot. One interface can be assigned for one type of timeslot only, deletes all different timeslot types before changing assigned timeslot type.

E1 interface timeslot assignment

OPCOM3103 has 32 E1 interfaces; 31-32 are channels used to transmit E1 network management information.

OPCOM3103 provides 2 commands for timeslot assigning. Users can choose whether assign timeslot according to backboard timeslot, if only input SDH timeslot, system will assign one piece of backboard timeslot automatically.

Example:

1. Add VC12 timeslot 1 to SDH optical interface 1 at EOS interface 1:

OPCOM3103# config

OPCOM3103(config-eos/0/1)#timeslot add sdh 1 vc12 1

Set successfully.

2. Add VC3 timeslot 1-3 to SDH optical interface 1 at EOS interface 1:

OPCOM3103(config-eos/0/1)# timeslot add sdh 1 vc3 1-3


15

Set successfully.

3. Add VC12 timeslot 1 to SDH optical interface 1 at E1 interface 1:

OPCOM3103(config-e1/0/1)# timeslot add sdh 1 vc12 1

Set successfully.


16

Chapter 6 Protection Configuration

This chapter mainly introduces SDH protect-switch configuration.

OPCOM3103 provides protection function based on SDH interface, and 1+1 protection and multiplex section protection are available.



protect-switch (enable|disable) (enable|disable): enable or disable protection.

show aps Show APS status.

aps-mode (nonrevertive|revertive) Configure APS mode command. (nonrevertive|revertive): select APS mdoe;

aps-restore-time time <0-12> Configure restore time of APS.

Example: Enable APS on SDH optical interface:

OPCOM3103(config)# protect-switch enable

Set successfully


17

Chapter 7 Clock Configuration

7.1 Related commands

Command Description

Config Enter global configuration mode.

device clock ssm (disable|standard|extend)

Configure SSM mode.

disable: SSM function disable, switch of clock just depends on alarm and priority and alarm of clock source; standard: enable SSM described in ITU-T G.781; extend: extending standard SSM by enabling clock ID, enhance the capacity of avoiding clock loop.

device clock local priority <1-5>quality (prc|ssua|ssub|sec|dnu|received)] Or device clock sdh-port SLOT/PORT <1-5> [quality (prc|ssua|ssub|sec|dnu|received)] Or device clock e1 <1-4> priority <1-5> [quality (prc|ssua|ssub|sec|dnu|received)]

Configure priority of clock source and quality level set in advance. Set quality level to be received, which indicates the quality level not set in advance but scavenge from the real-time received singal from clock source. Generally speaking, local must set quality level in advance; other clock source can set quality level or not according to the condition if input signal takes along with SSM information.。

device clock local id <0-15> Or device clock sdh-port SLOT/PORT id <0-15> Or device clock e1 <1-4> id <0-15>

Configure clock source ID. This configuraiton is meaningless except under extend SSM mode. In extend SSM mode, clock source to synchronize with NE in synchronous network should all set with ID.

show device clock Show clock information.

7.2 Configure synchronous chain network

7.2.1 Chain topology configuration Chain network topology is one the simplest synchronous network topology in common use. Suppose a chain network topology with 4 NE as below figure shows:

Chain synchronous network topology

Eastbound SDH port of NE1 access to OPCOM3500E to aggregate services; eastbound SDH port of


18

NE2 connects with westbound port of adjacent device.

In normal running, the whole network synchronizes with device clock of OPCOM3500E; if OPCOM3500E clock is invalid, the whole network synchronizes with local clock of NE1. If fiber among NE is broken, synchronous network is cut off to be two chain sub-nets by the broken point of fiber and the two sub-nets run in pseudo synchronization mode.

Users should enable standard SSM protocol in whole network in this topology mode. Configuration of NE clock as below table shows:

NE1, NE2:

Priority Clock source Quality level Clock ID

1 Eastbound line clock source Scavenge by automation 0

2 Local crystal run SEC 0

7.3 Configure ring synchronous network

7.3.1 Single BITS configuration Single BITS chain topology is also a common synchronous network topology.

Suppose a chain network topology with 4 NE as below figure:

Single BITS ring synchronous network topology

External clock of NE1 input port accesses output of main BITS, westbound SDH port of NE2, NE3 and NE4 connect with eastbound port of adjacent device.

In normal running, the whole network synchronizes with main BITS clock; if BITS is invalid, the whole network synchronizes with local clock of NE1. If fiber among NE is broken, synchronous network is cut off to be two chain sub-nets by the broken point of fiber and the two sub-nets run as 7.2.1 showed mode.


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Users should enable standard SSM protocol in whole network in this topology mode. Configuration of NE clock as below table shows:

NE1:


1 External 2Mbit clock source Scavenge by automation 0


NE2, NE3, NE4:



2 Westbound line clock source Scavenge by automation 0


7.3.2 Dual BITS ring configuration Dual BITS ring network topology adds one standby BITS comparing with single BITS network. The clock protection capability is greatly improved.

Suppose a ring network topology with 4 NE as figure below shows:

Dual BITS ring synchronous network topology

External clock of NE1 input port accesses output of main BITS, westbound SDH port of other NE connect with eastbound port of adjacent device. External clock input port of NE4 accesses output of standby BITS.


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In normal running, the whole network synchronizes with main BITS clock; if BITS is invalid, the whole network synchronizes with standby BITS clock; if standby BITS is invalid, the whole network synchronizes with lock clock of NE1. If fiber among NE is broken, synchronous network is cut off to be two chain sub-nets by the broken point of fiber and the two sub-nets run as 9.2.1 showed mode.

Users should enable extend SSM protocol in whole network in this topology mode. Configuration of NE clock as below table shows:

NE1:






NE2, NE3:





NE4:






7.3.3 Self-loop network of OPCOM3103 Use several (more than 3) sets of OPCOM3103 to build up ring topology network as figure shows:

NE1, NE2 and NE3 make up SDH ring network. In normal running, the whole network synchronizes E1 line clock connected from external NE1. If E1 line clock of NE1 is invalid, the whole network


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synchronizes with E1 line clock of NE2; if both NE1 and NE2 E1 line clocks are invalid, the whole network synchronizes local clock of NE1.

Users should enable extend SSM protocol in whole network in this topology mode. Configuration of NE clock as below table shows:

NE1:


1 E1 line clock source Set to be PRC 1




NE2:




3 E1 line clock source Set to be PRC 2


NE3:






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Chapter 8 Network Topology


Overview Point-to-point topology Chain topology Ring topology

8.1 Overview

OPCOM3103 provides bi-direction aggregation interface and Ethernet and E1 tributary interface. It is flexible to build network topology for meeting complicated structure in client accessing, as below.

8.2 Point-to-point topology

Network of point to point topology is used in inter-office relay and extend or used to replace the existing PDH. The networking is shown in the picture below:

TM device can form point to point non-protection network, and double TMs can form a 1+1 protection of STM-1 level. When configured as 1+1 protection mode, the two optical interfaces can protect each other to improve service reliability.

8.3 Chain topology

Network of chain topology is suitable for communication network in chain topology and tributary networks in chain topology.

TM and ADM can form a non-protection chain topology network, and double TMs and ADM can form 1+1 protection chain of STM-1 level.

When configured as 1+1 protection mode, service reliability will be improved.


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8.4 Ring topology

Network of ring topology is suitable for distribution of network elements in ring topology. With the feature of line interfaces self closed, service can be transmitted bi-directionally (eastward and westward), so the network has high reliability and self-healing ability.

This topology can form a 2F SNC-P.

8.4.1 2F SNC-P The advantages of 2F SNC-P are high speed, flexibility and all level capacities. The switching depends on local environment and has nothing to do with the network topology, so 2F SNC-P is suitable for all kinds’ topologies, especially dynamic network.

The disadvantage of 2F SNC-P is that all the tributaries in the ring are all APS architectures, that is between any two points, there are two transmission lines transmitting the data bi-directionally, and every receiving node receives the data bi-directionally. So the total service flow is lower than the device capacity.

2F SNC-P is suitable for access network, relay network and long distance network, which are concentrated, low service flow.


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Chapter 9 Typical Application

OPCOM3103 is typically networking with OPCOM 3100 series products, and aggregated by SUB2STM1 sub-card.

9.1 In-band network management channel configuration

9.1.1 DCC network management channel Typical ring network management path application as the below figure shows:


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Three OPCOM3103 are used here to build ring network, the configuration of every device shows as the figure.

Configure DCC interface IP on OPCOM3103-A:


OPCOM3103#config Enter global configuration mode

OPCOM3103(config)# interface dcc 1 Enter dcc interface 1

OPCOM3103(config)#ip address 192.168.5.1 Configure dcc1 ip 192.168.5.1

OPCOM3103(config)#interface dcc 2 Enter dcc interface 2


Configure DCC interface IP on OPCOM3103-B:







Configure DCC interface IP on OPCOM3103-C:



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Ping 192.168.5.28 and 192.168.6.28 must be successful on OPCOM3103-A after configuration successfully, and network management host can access 192.168.5.28 and 192.168.6.28 to realize management of other devices. If one path of network management has fault, the host can manage other devices by alternative router. Selection of router is automatically operated in accordance with devices rip.


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Appendix A Acronyms

Acronyms Full spelling

ADM Add-Drop Multiplexer

AIS Alarm Indication Signal

APS Automatic Protection Switching

AU Administrative Unit

AU-n Administration Unit，level n

AUG Administration Unit Group

AU-PTR Administration Unit Pointer

BBE Background Block Error

BBER Background Block Error Ratio

BER Bit Error Ratio

CMI Coded Mark Inversion

C-n Container- n

CORBA Common Object Request Broker Architecture

CV Code Violation

DCC Data Communications Channel

DCE Data Circuit-terminating Equipment

DCF Data Communications Function

DCN Data Communications Network

DDN Digital Data Network

DTE Data Terminal Equipment

DXC Digital Cross Connect

ECC Embedded Control Channel

EM Element Management


EML Element Management Layer

EMS Element Management System

EOS Ethernet Over SDH

ES Error Second

ESR Error Second Ratio

ETSI European Telecommunication Standards Institute

FEBBE Far End Background Block Error


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FEES Far End Error Second

FESES Far End Severely Error Second

GUI Graphical User Interface

HDLC High Digital Link Control

HPC Higher order Path Connection

IP Internet Protocol

ITU-T International Telecommunication

Union-Telecommunication Standardization Sector

L2 Layer 2

LAN Local Area Network

LCT Local Craft Terminal

LOF Loss Of Frame

LOP Loss Of Pointer

LOS Loss Of Signal

LPC Lower order Path Connection

MAC Medium Access Control

MAN Metropolitan Area Network

MCU Micro Control Unit

MD Mediation Device

MF Mediation Function

MII Medium Independent Interface

MM Multi Mode

MS Multiplex Section


MS-AIS Multiplex Sections - Alarm Indication Signal

MSOH Multiplex Section OverHead

MSP Multiplex Section Protection

NE Network Element

NEF Network Element Function

NEL Network Element Layer

NML Network Manager Layer

NMS Network Management System

OAM Operation,Administration and Maintenance

OFS Out of Frame Second

OOF Out of Frame

OS Operation System


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OSI Open System Interconnect

PCM Pulse Code Modulation

PDH Plesiochronous Digital Hierarchy

PJE+ Pointer Justification Event +

PJE- Pointer Justification Event -

POH Path OverHead

PPP Point to Point Protocol

PRC Primary Reference Clock

RAM Random Access Memory

RDI Remote Defect Indication

REI Remote Error Indication

REG Regenerator

RFI Remote Failure Indication

RIP Router Information Protocol


RMII Reduced Medium Independent Interface

RS Regenerator Section

RSOH Regenerator Section OverHead

SDH Synchronous Digital Hierarchy

SEC SDH Equipment Clock

SES Severely Error Second

SESR Severely Error Second Ratio

SETS Synchronous Equipment Timing Source

SM Single Mode

SNCP Sub network Connection Protection

SOH Section Overhead

SPRING Shared Protection Ring

SSM Synchronous State Message

STM-N Synchronous Transport Module Level-N

TCP Transport Control Protocol

TDEV Time Deviation

TDM Time Division Multiplex

TM Terminal Multiplexer

TMN Telecommunications Management Network

TU Tributary Unit

TU-m Tributary Unit，level m


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TUG-m Tributary Unit Group，level m

UAS Unavailable Second

VC Virtual Container

VC-n Virtual Container，level n

VLAN Virtual Local Area Network

WAN Wide Area Network

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OPCOM3103 Configuration Guide 200907