How to Troubleshoot Synchronous Ethernet Clocks For Huawei SDH

OptiX OSN 7500 II/7500/ OptiX OSN 3500/ OptiX OSN 1500 Troubleshooting：How to Troubleshoot Synchronous Ethernet Clocks

The common faults regarding the synchronous Ethernet clock are as follows:

A clock source cannot be properly switched and the quality of clock is low.

Possible Causes

l The connection at the port fails.

l An alarm associated with the synchronous Ethernet clock function occurs on the network.
Figure 1 Flow chart for handling a synchronous Ethernet clock fault
 

Procedure

Step 1 Cause 1: The connection at the port fails.

1. Check whether the ETH_LOS or ETH_LINK_DOWN alarm occurs at the port.

2. If yes, clear the alarm and then check whether the fault is rectified. For details on how to

clear the alarm, see the Alarms and Performance Events Reference.

Step 2 Cause 2: An alarm associated with the synchronous Ethernet clock occurs on the network.

1. Check whether any alarm associated with the synchronous Ethernet clock occurs on the network. For details, see Relevant Alarms.

2. If yes, clear the alarm. For details on how to clear the alarm, see the Alarms and

Performance Events Reference.

Step 3 If the fault persists, contact Huawei technical support engineers to handle the fault.

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