Interface UPs with no DOWNs

pnicolette · ‎10-20-2008

Within one minute this morning, our 3745 logged four %LINK-3-UPDOWN "changed state to up" messages on a Fast Ethernet interface, with no down messages in between them.

It's a busy interface that has otherwise been stable. IOS 12.4(15)T7 Anyone seen this before? Should we worry? Thanx.

Paul

patrickvanham · ‎10-22-2008

to make sure you get the up/down notifications configure "logging event link-status" on the interface. If you have MRTG or some other way to verify traffic over the interface you could verify if traffic has been reduced since these logs appeared.

pnicolette · ‎10-25-2008

Thank you Patrick. I added the explicit event logging. I haven't seen a change in our MRTG but with the 5-minute averaging interval it might have to be down a while to show up. Haven't seen any more messages yet.

Paul