We currently are running ver. 3.7.1 s/w on our pp8600. We have seen on a few occasions various GBIC ports shut down for unknown reasons and not come back active without intervention. We swap ports & GBIC's at each end and still no connectivity. Test neg. speeds with still no connectivity. The link generally comes back up eventually. We have seen this with both SX and XD GIBC's. Anybody have any ideas what may cause this?
Thanks in advance.
I have seen this where getting errors/or maybe too many broadcast storm type of traffic ?
Anyway, never seen the error, was over by the time got the port reset.
Are the GBIC's Nortel or 3rd party ?
Sounds like cplimit kicked in to protect the CPU from excessive broadcast or multicast traffic. This usually happens when an accidental loop is caused in the network.
You can find the reason in the log file (show log file tail) or with:
show port info state x/y
which will give you the date/time the port changed state, and a reason code.
You might need an upgrade to 3.7.6 (maybe 3.7.2+) to get this feature--I forget.
Found out yesterday that 3.7.1 has been pulled from Nortel's supported software list and they are recommending customers upgrade to 3.7.3+. This information and more specifics can be found in CSB-0503001.
We are running into some significant CPU utilization problems with Apple's ASR and multicast, and Nortel has recommended upgrading code first.
-mike
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