01-12 Configuring Clock Transmission

OptiX BWS 1600G Configuration Guide Contents

Issue 04 (2007-10-18) Huawei Technologies Proprietary i

Contents

12 Configuring Clock Transmission .......................................................................................12-1 12.1 Overview...................................................................................................................................................12-2 12.2 Basic Operation.........................................................................................................................................12-2

12.2.1 Configuring Clock Input ..................................................................................................................12-2 12.2.2 Configuring Clock Output ...............................................................................................................12-3 12.2.3 Configuring the Working Route of the Service Clock .....................................................................12-4

12.3 Parameters .................................................................................................................................................12-4 12.4 Application Example .................................................................................................................................12-5

12.4.1 Description of Example ...................................................................................................................12-5 12.4.2 Networking Planning .......................................................................................................................12-6 12.4.3 Configuration Process ......................................................................................................................12-9

Figures OptiX BWS 1600G

Configuration Guide

ii Huawei Technologies Proprietary Issue 04 (2007-10-18)

Figures

Figure 12-1 Networking design diagram of Project C......................................................................................12-5

Figure 12-2 Clock Transmission design of Project C.......................................................................................12-6

Figure 12-3 Configuration of ONEs E and G in Project C...............................................................................12-7

Figure 12-4 Configuration of ONE F in Project C ...........................................................................................12-8

Figure 12-5 Wavelength allocation diagram of Project C.................................................................................12-8

OptiX BWS 1600G Configuration Guide Tables

Issue 04 (2007-10-18) Huawei Technologies Proprietary iii

Tables

Table 12-1 Attributes of the clock.....................................................................................................................12-4

Table 12-2 Working route of the clock .............................................................................................................12-6

Table 12-3 Network data table of Project C......................................................................................................12-6

OptiX BWS 1600G Configuration Guide 12 Configuring Clock Transmission

Issue 04 (2007-10-18) Huawei Technologies Proprietary 12-1

12 Configuring Clock Transmission About This Chapter

The following table lists the contents of this chapter.

Section Describes

12.1 Overview Describes the clock transmission technology.

12.2 Basic Operation Describes the basic operations and cautions to configure the clock transmissions.

12.3 Parameters Describes parameters involved in the clock transmission configuration.

12.4 Application Example Describes the procedure of clock transmission configuration with Project C as an example.

12 Configuring Clock Transmission OptiX BWS 1600G

Configuration Guide

12-2 Huawei Technologies Proprietary Issue 04 (2007-10-18)

12.1 Overview The OptiX BWS 1600G provides a clock transmission channel at PDH level. The clock is accessed from the electrical interface on the subrack interface area. The system uses the supervisory channel to transmit the clock synchronization signal, which is realized by the ST1/ST2 board. On an OLA or OADM node, clocks can be transparently transmitted or added/dropped. On an OTM node, clocks can be added/dropped.

For more details, refer to the OptiX BWS 1600G Backbone DWDM Optical Transmission System Product Description.

12.2 Basic Operation This section describes only the basic configuration of clock transmission.

Stage Task

Configuring Clock Input Configuring the input attributes of the board clock source at the node with the external input clock

Configuring Clock Output Configuring the output attributes of the board clock source at the node with the external output clock

Configuring the Working Route of the Service Clock

Configuring the working route of the board clock source for all nodes

12.2.1 Configuring Clock Input When configuring clock transparent transmission services at regenerators or transport terminals in the WDM system, you need to configure the attributes of clock input.

Prerequisites z You must be an NM user with "NE and network operator" authority or higher. z Applies to the ST1 and ST2 boards.

Procedure Step 1 In the NE Explorer, select a board and choose Configuration > Clock Configuration from

the Function Tree. Set the Input Mode parameter for the external clock source.

This parameter is only applicable to an external clock input port. Set this parameter only for the start node of a clock transmission link.

Step 2 Set the Auto-Report When S1 Byte Unavailable parameter for the external clock source to Enabled.



When this parameter is set to Enabled, the S1 byte is disabled upon a detection of clock loss. The default value is Disabled, and usually you do not need to change it.

Step 3 Configure each service clock channel and determine whether to monitor the service clock channel.

The parameter Use or Not determines whether the system monitors the input clock. It is intended for the line input clock and external clock. It must be configured on each node in the clock transmission link. Determine whether to use the clock source. Set the clock source that is not used to No. In this case, the system does not monitor or process the clock source and, just like ports, unnecessary alarms and performance events can be avoided. Set the clock source that is used to Yes. In this case, the system does monitor and process the clock source.

Step 4 Click Apply. A prompt appears to indicate you that the operation was successful.

Step 5 Click Close.

Step 6 (Optional) Click Query to query the Existing Status and S1 Byte Received parameter settings.

----End

12.2.2 Configuring Clock Output When configuring clock transparent transmission services at regenerators or transport terminals in the WDM system, you need to configure the attributes of clock output.



the Function Tree.

Step 2 Click the Output Attributes tab and click Query to query the clock output attributes.

Step 3 Set the Output Mode parameter for the external clock source.

This parameter is applicable to only an external clock output port. Set this parameter at the node with clock output. The Output Mode of the service clock must be consistent with the Input Mode of the service clock on other NEs.


Step 5 Click Close.

----End


Configuration Guide


12.2.3 Configuring the Working Route of the Service Clock To pass through or add/drop clock signals at nodes in transmission link, you need to configure the working route for clock services.


Context z The ST1 board can be configured with four channels of output clock signals in which the

two channels of clock signals are received from the line and two channels of clock signals are accessed externally.

z The ST2 board can be configured with four channels of output clock signals chosen from the four channels of clock signals received from the east and west directions and the two channels of clock signals accessed externally.


the Function Tree.

Step 2 Click the Working Route tab. Click Query to query the working route parameter of the service clock.

Step 3 Select an input clock from the Input Clock drop-down list. Select an output clock from the Output Clock pane. Then click the button. The created working route is displayed in the Working Route pane. Repeat this step to create other working routes.


Step 5 Click Close.

----End

12.3 Parameters Table 12-1 shows the attributes of the clock.

Table 12-1 Attributes of the clock

Field Value Description

Clock Source For ST1 board: West Input1, West Input2, External Input1 and External Input2. For ST2 board: West Input1, West Input2, East Input1, East Input2, External Input1, and External Input2.

Displays the clock source on the clock board.



Field Value Description

Existing Status Available, Not Available Displays whether any clock source exists or not.

Input Mode 2MBit/s, 2 MHz, NULL Configure the input mode of the external clock source. If the input mode of the external clock source is inconsistent with the actual input mode, the clock source cannot be processed correctly.

Auto-Report when S1 Byte Unavailable

Disabled, Enabled Default: Disabled

Decides whether to automatically report the S1 byte unavailable event when the system detects loss of clock.

Use or Not Yes, No Sets whether to use this clock source or not. Set the clock source that is not used to No. In this case, the system does not monitor or process the clock source and, just like ports, unnecessary alarms and performance events can be avoided.

S1 Byte Received

For example: Synchronization quality is unknown

Displays the clock quality information expressed by the S1 byte of the clock source.

12.4 Application Example This chapter takes Project C that is configured with the clock transmission as an example to describe how to configure the clock transmission.

For details on how to create topology and how to configure the WDM interface attributes of boards, refer to Chapter 2 "Create the Network". This chapter focuses on the configuration of clock transmission function only.

12.4.1 Description of Example Project C is a chain consisting of three ONEs, which are named E, F and G.

ONEs E and G are OTM stations and ONE F is an OLA station.

A couple of STM-64 services channels are assigned at two transmit ends. The networking architecture of it is shown in Figure 12-1.

Figure 12-1 Networking design diagram of Project C

E F G

: OTM : OLA

One clock signal is transparently transmitted in the chain network. Figure 12-2 shows the clock transmission design. Table 12-2 lists the working route of the clock in each station.


Configuration Guide


Figure 12-2 Clock Transmission design of Project C

E F G

2M Hz Clock input2M Hz Clock

transport2M Hz Clock

transport 2M Hz Clock output

Table 12-2 Working route of the clock

ONE Timing Transporting Unit

Function Working Route of the Clock

E ST1 External clock input External input 1-->West output 1

F ST2 Clock pass-through West input 1-->East output 1

G ST1 Clock output West input 1-->External output 1

The ST1 is the timing transporting unit. Only the West output1 or West output2 can be selected in the Output Clock field. Hence, for the ONE E, only the West Onput1 or West Onput2 can be selected in the Output Clock field.

12.4.2 Networking Planning

Network Data Table 12-3 shows the network data of Project C, including the name of each ONE, the name of subrack NE and IP address.

Table 12-3 Network data table of Project C

ONE Name

ONE Type

Subrack NE Name

Subrack NE Extended ID

Subrack NE ID

IP Remarks

E OTM NE13 9 13 129.9.0.13 GNE (Gateway NE)

F OLA NE14 9 14 129.9.0.14 Non-GNE

G OTM NE15 9 15 129.9.0.15 Non-GNE



NE Board Information Figure 12-3 shows the board information of ONE E and ONE G in Project C. Figure 12-4 shows the board information of ONE F.

Figure 12-3 Configuration of ONEs E and G in Project C

ST1

OAU

FIU

SCC

OBU

NE13/NE15

LWF

LWF

M40

D40

Power Distribution Unit


Configuration Guide


Figure 12-4 Configuration of ONE F in Project C

ST2

OAU

FIU

SCC

OAU

NE14

FIU

Power Distribution Unit

Wavelength Allocation Diagram Figure 12-5 shows the wavelength allocation diagram of Project C. The solid line represents the working channel.

Figure 12-5 Wavelength allocation diagram of Project C

A B C

Wavelengthfrequency(THz)

Node

193.40

193.30

West East



12.4.3 Configuration Process

Configuring the Clock Source for ONE E Step 1 Double-click the ONE E icon on the Main Topology and the Slot Layout tab is displayed.

Right-click NE13 and select NE Explorer.

Step 2 In the NE Explorer, select 6-ST1 and choose Configuration > Clock Configuration from the Function Tree.

Step 3 In the right-hand pane, click the Input Attributes tab.

Step 4 Set the Input Mode where Clock Source is External Input1 to 2M Hz, set Use or Not to Yes, and then set other parameters.

Step 5 Click Apply. A prompt appears to indicate that the operation was successful. Click Close.

Step 6 Click the Working Route tab.

Step 7 In the drop-down list of Input Clock, select External input1. Select West Output1 from the box under Output Clock and click to create a clock working route.

Step 8 Click Apply. A prompt appears to indicate that the operation was successful.

Step 9 Click Close.

----End


Configuration Guide


Configuring the Clock Source for ONE F Step 1 Double-click the ONE F icon on the Main Topology and the Slot Layout tab is displayed.


Step 2 In the NE Explorer, select 6-ST2 and choose Configuration > Clock Configuration in the Function Tree.


Step 4 Set the Use or Not where Clock Source is West input1 to Yes, and then set other parameters.



Step 7 In the drop-down list of Input Clock, select West input1. Select West Output1 from the box under Output Clock and click to create a clock working route.


Step 9 Click Close.

----End



Configuring the Clock Source for ONE G Step 1 Double-click the ONE G icon on the Main Topology and the Slot Layout tab is displayed.


Step 2 In the NE Explorer, select 6-ST1 and choose Configuration > Clock Configuration in the Function Tree.


Step 4 Set the Use or Not where Clock Source is West Input1 to Yes, and then set other parameters.



Step 7 Set the Output Mode where Clock Source is External Output1 to 2M Hz, and then set other parameters.

The Output Mode of an external clock is only configured at the output station.



Step 10 Select West input1 from the drop-down list of Input Clock and External Output1 in the Output Clock filed, and click to create a clock working route.


Configuration Guide



Step 12 Click Close.

----End

ContentsFiguresTables12 Configuring Clock TransmissionAbout This Chapter12.1 Overview12.2 Basic Operation12.2.1 Configuring Clock Input12.2.2 Configuring Clock Output12.2.3 Configuring the Working Route of the Service Clock

12.3 Parameters12.4 Application Example12.4.1 Description of Example12.4.2 Networking Planning12.4.3 Configuration Process

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01-12 Configuring Clock Transmission