E1 controller flapping
I have 2 7206 VXRs each of then equipped with 8 port channelized E1s - PA-MC-8E1/120.
I am using them as R3 and BB1/Frame Relay switch in INE topology. The
problem I am facing is that on random intervals of time all E1
controllers on the R3 router are going down simultaneously for a brief
moment and then coming up again. I am suspecting hardware problem in the
card itself but could it be related to some missing configuration on
the controller ? Right now I have nothing on them besides the
channel-group. I have tried changing slots etc. and it doesn't seem like a
cable issue as all the controllers are going down simultaneously. I'll
appreciate your input.