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Cisco IE 3000 Switch Software Configuration Guide
OL-13018-03
Chapter 12 Configuring IEEE 802.1x Port-Based Authentication
Configuring 802.1x Authentication
Configuring Periodic Re-Authentication
You can enable periodic 802.1x client re-authentication and specify how often it occurs. If you do not
specify a time period before enabling re-authentication, the number of seconds between attempts
is 3600.
Beginning in privileged EXEC mode, follow these steps to enable periodic re-authentication of the client
and to configure the number of seconds between re-authentication attempts. This procedure is optional.
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.
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
authentication periodic
or
dot1x reauthentication
Enable periodic re-authentication of the client, which is disabled by
default.
Step 4
authentication timer
{{[
inactivity
|
reauthenticate
] [
server
|
am
]} {
restart
value
}}
or
dot1x timeout reauth-period
{
seconds
|
server
}
Set the number of seconds between re-authentication attempts.
The
authentication timer
keywords have these meanings:
•
inactivity
—Interval in seconds after which if there is no activity from
the client then it is unauthorized
•
reauthenticate
—Time in seconds after which an automatic
re-authentication attempt is be initiated
•
server
am
—Interval in seconds after which an attempt is made to
authenticate an unauthorized port
•
restart
value
—Interval in seconds after which an attempt is made to
authenticate an unauthorized port
The
dot1x timeout reauth-period
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.
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.
