3550-48 EMI problems

venancio.martinez · ‎04-08-2003

We have a lot of "output buffer failures" problems on a Catalyst 3550-48 EMI. We have a lot of problems in tcp connections through this switch, with timeouts. Does anyone know what "output buffer failures" mean? How can we solve it? Is this type of error enough to loose tcp connections?

TIA

Prashanth Krishnappa · ‎04-09-2003

Check to see if you are over subscribing the interfaces. There was a bug filed

http://www.cisco.com/cgi-bin/bugtool/onebug.pl?bugid=CSCdy09531

In some cases it was oversubscription and in some cases it was not seen in most recent IOS. What software version are you running?

venancio.martinez · ‎04-09-2003

The version is 12.1(9)EA1c.

Prashanth Krishnappa · ‎04-09-2003

Ok..Are you oversubscribing the ports? Do you have any multicast traffic in your network? Try upgrading to 12.1.13.EA1a as well. Make sure you read the release notes for known issues

bcbvale · ‎04-09-2003

I had a problem with input queue drops once and the following link helped. It has information on troubleshooting output queue drops also. Not sure if it will help though.

ChrisV

http://www.cisco.com/warp/public/63/queue_drops.html#topic4