Prerequisites
The CKMC/CKMD clock daughter board has been installed on the SCU main control board.
Context
Configuration roadmap for clock synchronization:
1. The OLT traces the upstream E1/STM-1 line clock of the TOPA board as the system clock.
2. The system clock is delivered to an ONU through optical paths of the GPON board.
3. The ONU uses the line clock of the GPON upstream port as the system clock.
4. The ONU E1 transmit clock is synchronized with the system clock of the ONU.
Procedure
l Configure a clock on the OLT.
1. Add a system clock source.
Configure the E1/T1 line clock input from port 0/5/0 on the EDTB board as the system
clock 0. Set the priority to 0 (highest priority).
huawei(config)#clock source 0 0/5/0
huawei(config)#clock priority system 0
2. Query configurations and the status of the system clock source.
Run the display clock source system command to query configurations and the status
of the clock source. Ensure that configurations of the system clock source are correct
and the status is Normal.
huawei(config)#display clock source system
-------------------------------------------------------------------------
-----
Index Board Source Clk-type State Priority QL
Selected
-------------------------------------------------------------------------
-----
0 H802EDTB 0/5/0 E1 Normal 0 ---
YES
-------------------------------------------------------------------------
-----
Run the display clock mode command to query the clock working mode. Ensure that
the clock daughter board works in tracing mode.
huawei(config)#display clock mode
Clock manage-mode:Third-mode
Clock subboard work-mode:Tracing
l Configure a clock on the ONU.
1. Configure the GPON line clock as the system clock.
The system clock of the OLT is delivered to the ONU through the GPON port on the
OLT, achieving clock synchronization between the OLT and the ONU.
a. Run the clock source command to configure the clock recovered from the GPON
upstream port as the system clock of the ONU.
b. Run the clock priority command to configure the priority of the clock source.
huawei(config)#clock source 0 0/0/1
Clock source set succeeded
SmartAX MA5600T/MA5603T/MA5608T Multi-service
Access Module
Commissioning and Configuration Guide
13 FTTO Configuration (Large-sized Enterprise Access)
Issue 01 (2014-04-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
1338
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