12-24-2007 06:07 AM
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?
12-24-2007 09:09 AM
"Authentication fails; the error "Unknown NAS" appears in the Failed Attempts log.
Verify the following:
â¢AAA client is configured under the Network Configuration section.
â¢If you have RADIUS/TACACS source-interface command configured on the AAA client, make sure the client on ACS is configured using the IP address of the interface specified.
Alternatively, you can configure a default NAS in the NAS configuration area by leaving the hostname and IP address blank and entering only the key."
12-25-2007 05:53 AM
I appreciate your reply, but you are just confirming what I put in my post.
All of that has been verified.
This has been working and suddenly does not.
No config has changed, reloading the router corrected the issue.
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