Hi,
I have a Cisco 2921 that was running IOS 15.3(2)T1.
I changed the IOS to 15.3(3)M (c2900-universalk9-mz.SPA.153-3.M.bin) to try to solve a suspected memory leak issue and, after the router was reloaded with the new IOS, was unable to log in to it
My AAA config from the router is shown below
aaa new-model
!
!
aaa authentication login default local-case
aaa authentication enable default enable
aaa authorization exec default local
!
username NetAdmin privilege 15 secret blahblahblah
I managed to do a password recovery and, when I did a show run found that the username line had been changed to
username NETADMIN privilege 15 secret blahblahblah
So the new IOS had changed the username to uppercase
The secret and the enable secret were unchanged.
Hope this post helps other people that run in to this "feature"
