Cisco 2950 Software Configuration Guide - Page 238

Configuring 802.1x Authentication Chapter 10 Configuring 802.1x Port-Based Authentication Step 3 Command aaa authentication dot1x {default} method1 [method2...] Step 4 Step 5 dot1x system-auth-control aaa authorization network {default} group radius Step 6 interface interface-id Step 7 dot1x port-control auto Step 8 Step 9 Step 10 end show dot1x copy running-config startup-config Purpose Create an 802.1x authentication method list. To create a default list that is used when a named list is not specified in the authentication command, use the default keyword followed by the methods that are to be used in default situations. The default method list is automatically applied to all ports. Enter at least one of these keywords: • group radius-Use the list of all RADIUS servers for authentication. • none-Use no authentication. The client is automatically authenticated by the switch without using the information supplied by the client. Enable 802.1x authentication globally on the switch. (Optional) Configure the switch for user RADIUS authorization for all network-related service requests, such as per-user ACLs or VLAN assignment. Note For per-user ACLs, single-host mode must be configured. This setting is the default. Specify the port connected to the client that is to be enabled for 802.1x authentication, and enter interface configuration mode. Enable 802.1x authentication on the port. For feature interaction information, see the "802.1x Configuration Guidelines" section on page 10-10. Return to privileged EXEC mode. Verify your entries. (Optional) Save your entries in the configuration file. Configuring 802.1x Accounting Enabling AAA system accounting with 802.1x accounting allows system reload events to be sent to the accounting RADIUS server for logging. The server can then infer that all active 802.1x sessions are closed. Because RADIUS uses the unreliable UDP transport protocol, accounting messages might be lost due to poor network conditions. If the switch does not receive the accounting response message from the RADIUS server after a configurable number of retransmissions of an accounting request, this system message appears: Accounting message %s for session %s failed to receive Accounting Response. When the stop message is not sent successfully, this message appears: 00:09:55: %RADIUS-3-NOACCOUNTINGRESPONSE: Accounting message Start for session 172.20.50.145 sam 11/06/03 07:01:16 11000002 failed to receive Accounting Response. 10-20 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10