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Knowledge Base

FAQ-If Both GSCC board fails MSP switching is still Occurred because NG-SDH product MSP protocol depend on Cross connect board

Publication Date:  2019-07-04  |   Views:  213  |   Downloads:  0  |   Author:  Muhammad Amjad  |   Document ID:  EKB0000321917

Contents

Issue Description

IF Both GSCC boards fail and at the same time Optical Fiber cut b/w Two Nodes, so then 2FMSP protection switching occurred or not

Alarm Information

APS-INDI

Handling Process

 NG-SDH protection switching has a feature its protection switching depend on Cross connect both not on Communication board.
Third test was conducted is that?
Pull out the working cross connect board and test the protection switching it will also occurred successfully.

Root Cause

I have configured the 2FMSP ring of 4 NE (OSN-7500) in Lab and conduct the test.
1) First I have pull out working GSCC board from NE, and then I have pull out working Fiber b/w NE-A and NE-B. Protection switching occurred successfully.
In second case
2) Both GSCC pull out from NE and then break the Fiber b/w NE-A and NE-B.
So found that protection switching is still occurred successfully.

Suggestions

NG-SDH product MSP switching depend on cross connect board.