Hi all,

I have been running into a problem in a POS SDH circuit from a service
provider.

I had three occurrences of the circuit alarming B3 alarms (path-level
errors) where the circuit would go down (line up, protocol down) and would
not recover from that. It is needed that I issue a "loopback line" on the
circuit, and only after releasing the loopback the circuit would go back up.

I have 7600s with OC-12 interfaces, both sides running 12.2(33r)SRB4 (yeah,
I still have not upgraded that version).

Have anybody ever experienced this kind of problem?

Persio
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