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118 | 802.1X
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To terminate the authentication process due to an unresponsive authentication server:
Figure 7-10 shows configuration information for a port for which the authenticator terminates the
authentication process for an unresponsive supplicant or server after 15 seconds.
Figure 7-10. Configuring a Timeout
Step Task Command Syntax Command Mode
1 Terminate the authentication process due to an
unresponsive authentication server.
dot1x server-timeout seconds
Range: 1-300. Default: 30
INTERFACE
Note: When you configure the
dot1x server-timeout value, you must take into account the communication medium used to
communicate with an authentication server and the number of RADIUS servers configured. Ideally, the dot1x
server-timeout
value (in seconds) is based on the configured RADIUS-server timeout and retransmit values and calculated
according to the following formula:
dot1x server-timeout seconds > (radius-server retransmit seconds + 1) * radius-server timeout seconds
Where the default values are as follows: dot1x server-timeout (30 seconds), radius-server retransmit
(3 seconds), and radius-server timeout (5 seconds).
For example:
FTOS(conf)#radius-server host 10.11.197.105 timeout 6
FTOS(conf)#radius-server host 10.11.197.105 retransmit 4
FTOS(conf)#interface gigabitethernet 2/23
FTOS(conf-if-gi-2/23)#dot1x server-timeout 40
FTOS(conf-if-gi-2/1)#dot1x port-control force-authorized
FTOS(conf-if-gi-2/1)#do show dot1x interface gigabitethernet 2/1
802.1x information on Gi 2/1:
-----------------------------
Dot1x Status: Enable
Port Control: FORCE_AUTHORIZED
Port Auth Status: UNAUTHORIZED
Re-Authentication: Disable
Untagged VLAN id: None
Guest VLAN: Disable
Guest VLAN id: NONE
Auth-Fail VLAN: Disable
Auth-Fail VLAN id: NONE
Auth-Fail Max-Attempts: NONE
Tx Period: 90 seconds
Quiet Period: 120 seconds
ReAuth Max: 10
Supplicant Timeout: 15 seconds
Server Timeout: 15 seconds
Re-Auth Interval: 7200 seconds
Max-EAP-Req: 10
Auth Type: SINGLE_HOST
Auth PAE State: Initialize
Backend State: Initialize
New Supplicant and Server Timeouts