I upgraded a 9148 from 5.0.1a to 5.2.6a.
Since then the TACACS or local credentials do not work.
According to the ACS logs, there is no attempt to use the ACS database for login attempts (I see no "Failed Attempts" in the ACS logs).
The switch is up and working otherwise, but I am not able to log in to manage. I am able to get to management IP Address.
Removing the switch as a TACACS network device does not allow me to log in locally either.
I can see the custom login banner we put on the switch, so the config is intact (for the most part).
Has anyone ever seen this before?