I just upgraded the IOS in my 2960's to 12.2(55)SE due to the new SVI static route feature. However, I noticed a serious issue on some of my 2960's:
-the boot failed on one of them, and stopped at the "boot:" prompt. I had to re-issue the boot command via console to start the boot process again, and at this time the boot was succesful.
- even in case of succesful boot, I can see a remark: shadowing for flash filesystem is disabled due to heap fragmentation.
After the boot, there is plenty of free RAM, and big continuous free RAM area. We use only like 2-3 VLANs, SSH, SNMP alerting, PVRSTP, but actually very simple switch config files. Is this a new bug in this release, as the open caveats section has no remark on this?