Radius Source-Interface - Cisco CRS User Manual

Authentication, Authorization, and Accounting Commands

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. 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 [vrf vrf_name]
no radius source-interface interface
Syntax Description
interface-name
vrf vrf-id
Command Default
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 mode
Command History
Release
Release 3.2
Release 3.4.0
Usage Guidelines
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
Task ID
aaa
OL-24740-01
Name of the interface that RADIUS uses for all of its outgoing packets.
Specifies the name of the assigned VRF.
Modification
This command was introduced.
The vrf keyword was added.
Operations
read, write
Cisco IOS XR System Security Command Reference for the Cisco CRS Router, Release 4.1
radius source-interface
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