Cisco 2950 Software Configuration Guide - Page 233

Chapter 10 Configuring 802.1x Port-Based Authentication Configuring 802.1x Authentication Manually Re-Authenticating a Client Connected to a Port You can manually re-authenticate the client connected to a specific port at any time by entering the dot1x re-authenticate interface interface-id privileged EXEC command. This step is optional. If you want to enable or disable periodic re-authentication, see the "Enabling Periodic Re-Authentication" section on page 10-14. This example shows how to manually re-authenticate the client connected to a port: Switch# dot1x re-authenticate interface fastethernet0/1 Changing the Quiet Period When the switch cannot authenticate the client, the switch remains idle for a set period of time, and then tries again. The idle time is determined by the quiet-period value. A failed authentication of the client might occur because the client provided an invalid password. You can provide a faster response time to the user by entering a smaller number than the default. Beginning in privileged EXEC mode, follow these steps to change the quiet period. This procedure is optional. Step 1 Step 2 Command configure terminal interface interface-id Step 3 dot1x timeout quiet-period seconds Step 4 Step 5 Step 6 end show dot1x interface interface-id copy running-config startup-config Purpose Enter global configuration mode. Specify the interface to be configured, and enter interface configuration mode. Set the number of seconds that the switch remains in the quiet state following a failed authentication exchange with the client. The range is 1 to 65535 seconds; the default is 60. Return to privileged EXEC mode. Verify your entries. (Optional) Save your entries in the configuration file. To return to the default quiet time, use the no dot1x timeout quiet-period interface configuration command. This example shows how to set the quiet time on the switch to 30 seconds: Switch(config-if)# dot1x timeout quiet-period 30 Changing the Switch-to-Client Retransmission Time The client responds to the EAP-request/identity frame from the switch with an EAP-response/identity frame. If the switch does not receive this response, it waits a set period of time (known as the retransmission time) and then resends the frame. Note You should change the default value of this command only to adjust for unusual circumstances such as unreliable links or specific behavioral problems with certain clients and authentication servers. 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 10-15