I have a router that has been configured in TACACS and suddenly started to fail login attempts.
TACACS is configured to source from the Loopback Internface on the router and I can ping it from the TACACS server.
I can log in with localy configured credentials on the router and the TACACS config is intact, I also have a switch at the same site and it is authenticating to TACACS with no problems.
When looking in TACACS, I see "Unknown NAS" with the source being the Serial Interface of the router.
Anyone ever see anything like this?
Would a router reboot be in order or possible a corrupted TACACS database?