Cisco Systems 3750E Setting the Re-Authentication Number, Configuring Ieee 802.1x Accounting

Chapter 10 Configuring IEEE 802.1x Port-Based Authentication

Configuring IEEE 802.1x Authentication

Setting the Re-Authentication Number

You can also change the number of times that the switch restarts the authentication process before the port changes to the unauthorized state.

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.

Beginning in privileged EXEC mode, follow these steps to set the re-authentication number. This procedure is optional.

	Command	Purpose
Step 1
	configure terminal	Enter global configuration mode.
Step 2
	interface interface-id	Specify the port to be configured, and enter interface configuration mode.
Step 3
	dot1x max-reauth-req count	Set the number of times that the switch restarts the authentication process
		before the port changes to the unauthorized state. The range is 0 to 10; the
		default is 2.
Step 4
	end	Return to privileged EXEC mode.
Step 5
	show dot1x interface interface-id	Verify your entries.
Step 6
	copy running-config startup-config	(Optional) Save your entries in the configuration file.

To return to the default re-authentication number, use the no dot1x max-reauth-reqinterface configuration command.

This example shows how to set 4 as the number of times that the switch restarts the authentication process before the port changes to the unauthorized state:

Switch(config-if)#dot1x max-reauth-req 4

Configuring IEEE 802.1x Accounting

Enabling AAA system accounting with IEEE 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 IEEE 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-4-RADIUS_DEAD: RADIUS server 172.20.246.201:1645,1646 is not responding.

	Catalyst 3750-E and 3560-E Switch Software Configuration Guide
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