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trigger alram delay on STM links.

Hi Team,

Problem description:

 Configuring delay trigger alram on STM Sonet controller to reduce Multiple flaps observed in STM1 links.

Root cause shared by reliance:


it was found that BB links are getting affected even in single fiber cut where the switching time is <50msec.On ring

This is mainly due to path alarms (Path AIS,  RDI, LOP etc) that are appearing at the end interface .

Path alarms raise during fiber cuts   & auto cleared after completion protection switching.

This is an expected behavior of any SDH/SONET convergence network & has no adverse effect on end user services.

 

Mitigation:

In order to mitigate these short time path alarms during network convergence we need to configure delay trigger on Sonet controller.

However we are not getting the command to configure the same.

Here logs attached and need further suggestion on this

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