Authentication, Authorization, and Accounting Commands on Cisco IOS XR Software
aaa group server radius
aaa group server radius
To group different RADIUS server hosts into distinct lists, use the aaa group server radius command in global configuration mode. To remove a group server from the configuration list, enter the no form of this command.
aaa group server radius
no aaa group server radius
Syntax Description |
| Character string used to name the group of servers. | |
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Defaults |
| This command is not enabled. | |
Command Modes
Command History
Global configuration
Release | Modification |
Release 3.2 | This command was introduced on the Cisco |
| Cisco XR 12000 Series Router. |
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Release 3.3.0 | No modification. |
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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 aaa group server radius command to group existing server hosts, which allows you to select a subset of the configured server hosts and use them for a particular service. A server group is used in conjunction with a global
Server groups can also include multiple host entries for the same server, as long as each entry has a unique identifier. The combination of an IP address and User Datagram Protocol (UDP) port number creates a unique identifier, allowing different ports to individually defined as RADIUS hosts providing a specific authentication, authorization, and accounting (AAA) service. In other words, this unique identifier enables RADIUS requests to be sent to different UDP ports on a server at the same IP address. If two different host entries on the same RADIUS server are configured for the same service, for example, accounting, the second host entry acts as a failover backup to the first host entry. Using this example, if the first host entry fails to provide accounting services, the network access server will try the second host entry on the same device for accounting services. The RADIUS host entries are tried in the order in which they are configured in the server group.
All members of a server group must be the same type, that is, RADIUS.
The server group cannot be named radius or tacacs.
This command enters server group configuration mode. You can use the server command to associate a particular RADIUS server with the defined server group.
Cisco IOS XR System Security Command Reference