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Authentication, Authorization, and Accounting Commands on Cisco IOS XR Software
tacacs source-interface
SR-88
Cisco IOS XR System Security Command Reference
Usage Guidelines To use this command, you must be in a user group associated with a task group that includes the proper
task IDs. For detailed information about user groups and task IDs, see the Configuring AAA Services on
Cisco IOS XR Software module of the Cisco IOS XR System Security Configuration Guide.
Use the tacacs source-interface command to set the IP address of the specified interface for all outgoing
TACACS+ packets. This address is used as long as the interface is in the up state. In this way, the
TACACS+ server can use one IP address entry associated with the network access client instead of
maintaining a list of all IP addresses.
This command is especially useful in cases where the router has many interfaces and you want to ensure
that all TACACS+ packets from a particular router have the same IP address.
When the specified interface does not have an IP address or is in a down state, TACACS+ behaves as if
no source interface configuration is used.
Task ID
Examples The following example shows how to set the IP address of the specified POS interface for all outgoing
TACACS+ packets:
RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# tacacs source-interface POS 0/1/0/1
Related Commands
Task ID Operations
aaa read, write
Command Description
aaa group server radius Groups different server hosts into distinct lists and distinct methods.