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Authentication, Authorization, and Accounting Commands on Cisco IOS XR Software
radius source-interface
SR-48
Cisco IOS XR System Security Command Reference
radius source-interface
To force RADIUS to use the IP address of a specified interface or subinterface for all outgoing RADIUS
packets, use the radius source-interface command in global configuration mode. To prevent only the
specified interface from being the default and not from being used for all outgoing RADIUS packets, use
the no form of this command.
radius source-interface interface-name
no radius source-interface
Syntax Description
Defaults If a specific source interface is not configured, or the interface is down or does not have an IP address
configured, the system selects an IP address.
Command Modes Global configuration
Command History
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 radius source-interface command to set the IP address of the specified interface or subinterface
for all outgoing RADIUS packets. This address is used as long as the interface or subinterface is in the
up state. In this way, the RADIUS server can use one IP address entry for every network access client
instead of maintaining a list of IP addresses.
The specified interface or subinterface must have an IP address associated with it. If the specified
interface or subinterface does not have an IP address or is in the down state, then RADIUS reverts to the
default. To avoid this, add an IP address to the interface or subinterface or bring the interface to the up
state.
The radius source-interface command is especially useful in cases in which the router has many
interfaces or subinterfaces and you want to ensure that all RADIUS packets from a particular router have
the same IP address.
Task ID
interface-name Name of the interface that RADIUS uses for all of its outgoing packets.
Release Modification
Release 3.2 This command was introduced on the Cisco CRS-1 and
Cisco XR 12000 Series Router.
Release 3.3.0 No modification.
Task ID Operations
aaa read, write