Using LP as authentication interface

[emily]

Before I used 2600 as ACS server client and using FastEthernet 0/0 as AAA Server authentication interface 。Now I want to change FastEthernet 0/0 to Loopback0 interface as authentication interface ，I couldn't found out any command can sepecify authentication interface on Cisco 2600 。

anyone can tell me Cisco Router can support the function or which IOS can support the function

[Richard Burts]

The command ip tacacs source-interface loopback 0 should do exactly what you are asking by allowing you to secify which interface will be used as the source address in authentication requests.

HTH

Rick