Monday, December 5, 2011

CISCO IOS 15.0 memory issues

Hopefully, this is old news for most of you reading this but I just ran into it and thought I'd share. Apparently IOS 12.2(58) and higher have major memory leaks on 2960's and 3750's. After rebooting to the new IOS, the switch has so little free memory that you can't even gain access to it via SSH, telnet or even console. The only option is the break the boot up sequence and boot to an older image (assuming you didn't delete it already). Check details: here

So, I figured I'd go with 12.2(55) but alas that has a bug with dot1x multi-auth (a feature I very much rely on)


So, be careful out there - apparently all the really good QA guys over at Cisco have retired....