TESTING PROTECTION SWITCHING BY PULLING OUT FIBER IN FIU PORT

Dear friend！

You can refer to the following information.

Test protection switching of the equipment triggered upon fiber removal.

1. Remove the fiber on the IN optical port of the working line board N1 at station A to trigger a switching, as shown in the following Figure.

During fiber removal, disconnect the fiber that inputs signals to the working line board N1 at station A. Otherwise, protection switching may be performed twice or no protection switching is performed. By doing this, the detected switching time is more scientific.

2. Check the channel status for ODUk SNCP protection of station A.

Choose Configuration > WDM Service Management from the Function Tree. Click SNCP Service Control, and click Query.

For switching upon fiber removal, Channel Status of the working cross-connection is SF, and Channel Status of the protection cross-connection is Idle. The status of the protection group is SF Switching.

3. In the NE panel of station A, right-click the board and choose Browse Current Alarms. The ODU_SNCP_PS alarm must be reported.

4. Test the services by using a signal analyzer. The services should be available, and no bit error should be generated.

5. To restore the test environment for the switching modes in step 1, reconnect the fiber.

 NOTE:

If Revertive Mode is set to Non-Revertive, select the desired working cross-connection, and click Function. In the displayed menu, choose Manual to Working. Then, select the same working cross-connection again, and click Function. In the displayed menu, choose Clear. Click OK in the displayed dialog box.

6. After WTR Time(mm:ss) expires, click Query. Status of the protection group should be Normal State.

We recommend that you do not remove the fiber on the FIU board, as this will interrupt many services.

Thank you!