Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

3550-48 EMI problems

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

4 REPLIES
Cisco Employee

Re: 3550-48 EMI problems

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?

New Member

Re: 3550-48 EMI problems

The version is 12.1(9)EA1c.

Cisco Employee

Re: 3550-48 EMI problems

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

New Member

Re: 3550-48 EMI problems

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

163
Views
4
Helpful
4
Replies