[c-nsp] Fibre link flapping

[Ambedkar]

Hi,
There is a problem in our network. Two switches are directly connected via
Multimode fibre, the link is working fine. But sometimes the link is down
in switch-A for 7 seconds and becoming UP. The logging messages shows that
link is down and UP in switch-A.  There is no err-disable messages anywhere.

But there is no logging message regarding up/down in respective switch-B.

Unable to understand what is the problem.

Please give suggestions.

thanks,
Ambi