ACS authentication problem

[y.lo]

I configured 2 ACS v3.0 servers on 2 w2k servers and they worked fine, initially. However, after doing something(seems that it's replicating database between the 2 ACS servers, but not sure), when I telnet into a AAA client router, I was only prompted for username, but not password. That is, after I entered the username and press 'enter', nothing happened but an 'Authentication failed' message. I got no way to enter the password. Does someone encounter this before?

[cjacinto]

You might want to enable a few debugs on the router, ie:

debug aaa authentication

debug aaa authorization

debug radius (or tacacs)

You would then be able to identity the phase it is failing, and might provide some clues on it. There is a good troubleshooting guide on:

http://www.cisco.com/univercd/cc/td/doc/cisintwk/intsolns/secsols/aaasols/c262c6.htm