Cisco 2975 - Catalyst LAN Base Switch, Software Configuration Manual

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Catalyst 2975 Switch Software Configuration Guide
OL-19720-02
Chapter 10 Configuring IEEE 802.1x Port-Based Authentication
Configuring 802.1x Authentication
To disable periodic re-authentication, use the no authentication periodic or the no dot1x
reauthentication interface configuration command. To return to the default number of seconds between
re-authentication attempts, use the no authentication timer or the no dot1x timeout reauth-period
interface configuration command.
This example shows how to enable periodic re-authentication and set the number of seconds between
re-authentication attempts to 4000:
Switch(config-if)# dot1x reauthentication
Switch(config-if)# dot1x timeout reauth-period 4000
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 “Configuring Periodic Re-Authentication” section
on page 10-44 .
This example shows how to manually re-authenticate the client connected to a port:
Switch#
dot1x re-authenticate interface gigabitethernet2/0/1
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
dot1x timeout quiet-period interface configuration command controls the idle period.
A failed client authentication might occur because the client provided an invalid password. You can
provide a faster response time to the user by entering a number smaller than the default.
Beginning in privileged EXEC mode, follow these steps to change the quiet period. This procedure is
optional.
Step 5
end Return to privileged EXEC mode.
Step 6
show authentication interface-id
or
show dot1x interface interface-id
Verify your entries.
Step 7 copy running-config startup-config (Optional) Save your entries in the configuration file.
Command Purpose
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 timeout quiet-period seconds Set the number of seconds that the switch remains in the quiet state after
a failed authentication exchange with the client.
The range is 1 to 65535 seconds; the default is 60.
Step 4
end Return to privileged EXEC mode.