radius server host

This command configures the IP address or DNS name to use for communicating with the RADIUS (Remote Authentication Dial In User Service) server of a selected server type. While configuring the IP address or DNS name for the authenticating or accounting servers, you can also configure the port number and server name. If the authenticating and accounting servers are configured without a name, the command uses the Default_RADIUS_Auth_Server and Default_RADIUS_Acct_Server as the default names, respectively. The same name can be configured for more than one authenticating servers and the name should be unique for accounting servers. The RADIUS client allows the configuration of a maximum 32 authenticating and accounting servers.

If you use the auth parameter, the command configures the IP address or hostname to use to connect to a RADIUS authentication server. You can configure up to three servers per RADIUS client. If the maximum number of configured servers is reached, the command fails until you remove one of the servers by issuing the “no” form of the command. If you use the optional port parameter, the command configures the UDP port number to use when connecting to the configured RADIUS server. The port number range is 1 - 65535, with 1812 being the default value.

Note

To reconfigure a RADIUS authentication server to use the default UDP port, set the port parameter to 1812.

If you use the acct token, the command configures the IP address or hostname to use for the RADIUS accounting server. You can only configure one accounting server. If an accounting server is currently configured, use the “no” form of the command to remove it from the configuration. The IP address or hostname you specify must match that of a previously configured accounting server. If you use the optional port parameter, the command configures the UDP port to use when connecting to the RADIUS accounting server. If a port is already configured for the accounting server, the new port replaces the previously configured port. The port must be a value in the range 0 - 65535, with 1813 being the default.

Note

To reconfigure a RADIUS accounting server to use the default UDP port, set the port parameter to 1813.