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6509 FlexWAN AAA on Cisco ACS V3.1

When configuring the ACS server for the FlexWAN as a TACACS+ client, which interface on the FlexWAN will source the request to the ACS server? The "Tacacs-Server Source Interface" command is not available, V12.1(13)E.

Also, in a FlexWan configured for redundancy which interface would source the request and is it the same for "Single Router" mode?

Cisco Employee

Re: 6509 FlexWAN AAA on Cisco ACS V3.1

It should be the interface closest to the ACS server, ie, the interface that the packet is sent out of when it is sent to the ACS server.

Not sure on redundancy, I would imagine it would again be the closest interface.

You can always check the Failed Attempts log on the ACS server, if you see a lot of "Unknown NAS" errors from an address, then add that address into the Network Configuration section.

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