Configuring the CSS as a Radius Client

Chapter 2 Configuring User Profiles and CSS Parameters

Configuring the CSS as a Client of a RADIUS Server

If no response is returned by the RADIUS server within a period of time, the authentication request is retransmitted a predefined number of times (both options are specified in the radius-servercommand). The RADIUS client can forward requests to an alternate secondary RADIUS server in the event that the primary server is down or is unreachable.

In a configuration where both a primary RADIUS server and a secondary RADIUS server are specified, and one or both of the RADIUS servers become unreachable, the CSS automatically transmits a keepalive authentication request to query the server(s). The CSS transmits the username “query” and the password “areyouup” to the RADIUS server (encrypted with the RADIUS server’s key) to determine its state. The CSS continues to send this keepalive authentication request until the RADIUS server indicates that it is available.

Note This section assumes that you have properly configured your RADIUS server implementation. Cisco Systems does not provide RADIUS server software, and it is beyond the scope of this document to cover the different RADIUS server configurations.

Use the radius-servercommand and its options to specify the RADIUS server host (primary RADIUS server, and, optionally, a secondary RADIUS Server), communication time interval settings, and a shared secret text string. This command is available in configuration mode. The options for this command are:

•radius-server primary ip_address secret string {auth-port port_number}- Specify the primary RADIUS server.

•radius-server secondary ip_address secret string {auth-port port_number} - Specify the secondary RADIUS server. Configuration of a secondary RADIUS server is optional.

•radius-serverdead-timeseconds - Set the time interval (in seconds) that the CSS probes an inactive RADIUS server (primary and secondary) to determine if it is back online.

	Cisco Content Services Switch Basic Configuration Guide
2-28	78-11424-03

78-11424-03 specifications

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