[c-nsp] 6500/7600 Pseudowires

[Adam Armstrong]

Hi All,

I have a pseudowire running between an IX and my peering router in 
another country.

There's a SIP600 in a 7606/SUP7203B at the far end facing the IX and a 
WS-X6748-GE-TX + DFC3B in a 7613/SUP7203B at this end facing the peering 
router.

The local 7613 is connected to the remote 7606 with a pair of long GE 
links.

Occasionally something along the chain reflects a couple of frames back 
to the IX, who shuts the port down automatically (killing off all of my 
peering sessions!)

Has anyone had anything similar, and found out the cause for it? I can 
verify that neither the IS-IS route to the 7606 nor the LSP for the 
pseudowire was changed during the issue.

Thanks,
adam.