01-21-2015 12:45 AM - edited 03-03-2019 07:44 AM
Dear support community,
We are a small group of network managers and we recently came across a problem in our planned network upgrade considering the 4500 series switches. Six of these switches are configured as VSS redundancy resulting in 3 VSS units connected over double-link fiberoptic port-channels (1+1) building a ring topology.
As soon as we put load (3,5Gbit/s) on one of the port-channels between two VSS, one unit (both main and stdby switches) crashes almost immediately and then reboots. This first happened a few weeks ago, yesterday when testing it happened again but on another VSS connected to the first one. I was able to recover the crashinfo files from both units, they are are attached to this post aswell as the show tech_support output from the one that crashed yesterday.
Unfortunately we don't have the tools and knowledge for analyzing the files and we would appreciate your help. Thank you in advance.
Max S.
01-23-2015 10:04 PM
Wow. You're running a very old IOS.
If you need to stay with 3.4.X then go with 3.4.5, which is a maintenance release (fixes a few bugs). Read the Release Notes for more information.
01-25-2015 10:30 PM
Hi Leo Laohoo, thank you for your response. We will have a look into this, for now it looks like one of our monitoring programs caused the crashes.
Max S.
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