[j-nsp] mclag with ex9200s

[Bryan Socha]

We're deploying ex9208s with an mclag setup and in failure testing,
we're finding some strange outages where every mclag is offline for
40-60 seconds with ifd minimum links 0 < 1 log messages.   The
senarios are different split brain, total chassis and line card
failures that interrupt ICCP communication.

Does anyone else use an ex9200 setup with mclag and not virtual
chassis that is not experiencing this outage senario?   I ahve some
atac cases opened on it but nothing definitive and it's the last quirk
to go live with the datacenter we're opening.

Thanks,
Bryan