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Chapter 8
Configuring IEEE 802.1x Port-Based Authentication
Command
Step 4
dot1x timeout reauth-period {seconds |
server}
Step 5
end
Step 6
show dot1x interface interface-id
Step 7
copy running-config startup-config
To disable periodic re-authentication, use the no dot1x reauthentication interface configuration
command. To return to the default number of seconds between re-authentication attempts, use 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
section on page
This example shows how to manually re-authenticate the client connected to a port:
Switch# dot1x re-authenticate interface gigabitethernet0/1
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 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 number smaller than the default.
Beginning in privileged EXEC mode, follow these steps to change the quiet period. This procedure is
optional.
Command
Step 1
configure terminal
Step 2
interface interface-id
OL-8915-03
Purpose
Set the number of seconds between re-authentication attempts.
The keywords have these meanings:
seconds—Sets the number of seconds from 1 to 65535; the default is
•
3600 seconds.
server—Sets the number of seconds based on the value of the
•
Session-Timeout RADIUS attribute (Attribute[27]) and the
Termination-Action RADIUS attribute (Attribute [29]).
This command affects the behavior of the switch only if periodic
re-authentication is enabled.
Return to privileged EXEC mode.
Verify your entries.
(Optional) Save your entries in the configuration file.
8-28.
Purpose
Enter global configuration mode.
Specify the port to be configured, and enter interface configuration mode.
Cisco Catalyst Blade Switch 3020 for HP Software Configuration Guide
Configuring IEEE 802.1x Authentication
"Configuring Periodic Re-Authentication"
8-29
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Troubleshooting
