Telneting from One Switch to another Switch

[dbnorton]

I have AAA on most of our switches and I can telnet from one switch to another switch on some of the devices and from other switches I get and an error message Authentication Failed I went and checked the Failed Attempt log and the error in there is User Access Filtered on TTY 66. Why does it use TTY 66 and not TTY 1 like all the rest.

[mchin345]

As far as I know on a Switch it should be a VTY, surprising to see you mentioning it as TTY. You can try debug aaa authentication to troubleshoot your problem.