After Ios upgrade from 03.03.03SE to 03.06.06E I found in web console stack Packet Error 90% (it varies)
after troubleshoot I found one port in master-switch giving problem g 1/0/5 if I disable, it will normal and if enable again then again stack packet error start, find below sho interface and help me to resolve this issue,
and why it happened after upgrade.?
This could be related to drops or errors in the interfaces. Can you send over the output of command "show interface counters error" please?
Hope this helps,
If, by "packet error", you mean "input errors" or "CRC" then the value of 646 is insignificant to the combined input packets.
If the value increments, then I'd investigate further.
Please find below.