Cisco NM-8B-U User Guide - Page 63
Enabling Periodic Reauthentication
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16- and 36-Port Ethernet Switch Module for Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Configuration Tasks Step 1 Step 2 Command Purpose configure terminal Enters global configuration mode. radius-server host {hostname | Configures the RADIUS server parameters on the switch. ip-address} auth-port port-number key For hostname | ip-address, specify the host name or IP address of the string remote RADIUS server. For auth-port port-number, specify the UDP destination port for authentication requests. The default is 1645. For key string, specify the authentication and encryption key used between the switch and the RADIUS daemon running on the RADIUS server. The key is a text string that must match the encryption key used on the RADIUS server. Note Always configure the key as the last item in the radius-server host command syntax because leading spaces are ignored, but spaces within and at the end of the key are used. If you use spaces in the key, do not enclose the key in quotation marks unless the quotation marks are part of the key. This key must match the encryption used on the RADIUS daemon. Step 3 Step 4 Step 5 end show running-config copy running-config startup-config If you want to use multiple RADIUS servers, repeat this command. Returns to privileged EXEC mode. Verifies your entries. (Optional) Saves your entries in the configuration file. To delete the specified RADIUS server, use the no radius-server host {hostname | ip-address} global configuration command. You can globally configure the timeout, retransmission, and encryption key values for all RADIUS servers by using the radius-server host global configuration command. If you want to configure these options on a per-server basis, use the radius-server timeout, radius-server retransmit, and the radius-server key global configuration commands. You also need to configure some settings on the RADIUS server. These settings include the IP address of the switch and the key string to be shared by both the server and the switch. For more information, refer to the RADIUS server documentation. Enabling Periodic Reauthentication You can enable periodic 802.1x client reauthentication and specify how often it occurs. If you do not specify a time period before enabling reauthentication, the number of seconds between reauthentication attempts is 3600 seconds. Automatic 802.1x client reauthentication is a global setting and cannot be set for clients connected to individual ports. Beginning in privileged EXEC mode, follow these steps to enable periodic reauthentication of the client and to configure the number of seconds between reauthentication attempts: Cisco IOS Release 12.2(2)XT, 12.2(8)T, and 12.2(15)ZJ 63
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