I've got L2 switch with a secondary IP address configured (for management purposes), it's connected to a ADSL router and we're 'natting' on the router to the secondary IP address - all seems to be working OK.
When we apply aaa to the L2 switch, it doesn't seem to respond to the tacacs server - does tacacs always work to the primary ip address ? or is there a way to communicate with the secondary address ?
As far as I see you can't assign IP-addresses as source-interface (at least with IOSs we're using):
ip tacacs source-interface
To use the IP address of a specified interface for all outgoing TACACS+ packets, use the ip tacacs source-interface command in global configuration mode. Use the no form of this command to disable use of the specified interface IP address.
ip tacacs source-interface subinterface-name
no ip tacacs source-interface
Name of the interface that TACACS+ uses for all of its outgoing packets.
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