Why the Fiber link fails to created between two Huawei DWDM device?

When you encounter fiber link fails to created between two NEs Huawei OTN network devices, you can analyze them in two step.

First,check the usage of the port as per below steps on the NMS:

Open NE explorer.

Open Signal view diagram.

Locate Huawei OSN 6800 OSN 8800 board which is in question.

Right click the board & choose (Show relevant fibers).

Check if any fiber is configured on that port.

If it is configured,delete it.

If no fiber is found configured on the port , carry out the second step of processing:

In Fiber/Cable Synchronization (Inventory > Fiber/Cable/Microwave Link > WDM Fiber/Cable Synchronization), check whether the desired port is found or not.

If yes, try to re-synchronize it. 

If no, proceed into the steps below to fix the issue:

1.Use Navigator to login into particular NE with the Error issue.

2.Use the command line "cfg-get-fibermgr:0,0,0,0" to list out all the logical fiber connection in that NE.

3.A list of logical fiber connection will be display.

For example: 0x00FDEFD         6        11     0x0WFDGRDF   8        4

                      Source Address   slot    port     Sink Address   slot   port

4.Use command "cfg-del-fibermgr: " to delete desire port.Make sure to get the correct information before proceeding to delete the logical fiber.

5.If the error shows it’s the source, then check the source address, and if it’s sink then check the sink address.

6.Once the logical fiber is deleted, the NE on the NMS will show the red arrow logo on the NE icon which indicate changes are successfully made and require to synchronize.

7.Proceed to "Synchronize the NE Configuration"  to synchronize  the NE.

8.Once the NE is synchronized, the logical fiber connection should be able to be created as it needed to be.

Root Cause

the root cause is due to incomplete deletion of the logical fiber connection/trail

Solution

Clear the port by delete the associated fiber using navigator