Specifications

2-35
Catalyst 4500 Se ries S wit ch C is co IO S C om mand R efer ence —Re lease I OS XE 3 .3.0 XO(1 5.1 (1)XO)
OL_28738-01
Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
authentication timer
authenticatio n timer
To configure the authentication timer, use the authentication timer command in interface configuration
mode. To return to the default settings, use the no form of this command.
authentic ation ti mer {{inact ivity value} | {reauthenticate {server | value}} | {restart value}}
no authentication timer {{inactivity value} | {reauthenticate value} | {restart value}}
Syntax Description
Command Default The default settings are as follows:
• inactivity value—Off.
• reauthenticate value —3600
• resta rt va lu e—Off
Command Modes Interface configur ation mode
Usage Guidelines Reauthentication only occurs if it is enabled on the interface.
Note You should change the default values of this command only to adjust for unusual circumstanc es such as
unreliable links or specific beha vioral problems with certa in clients or authentic ation servers.
During the inactivity period, the Ethernet switch network module does not accept or initiate any
authentication requests. If you want to provide a faster response time to the user, enter a number less
than the default.
The reauth ent ica te keyword a ffects t he behavi or of the E thernet sw itch n etwork mod ule only if y ou
have enabled periodic reauthentication with the authentication re authen ticatio n global configuration
command .
inactivity value Specifies the amount of time in seconds that a host is allowed to be inactive
before being authorized. Rang e is 1 to 65535. Default is Off.
Note The inactivity value should be less than the reauthenticate timer
value, but configuring the inactivity value higher than the
reauthenticate timer value is not considered an error.
reauthenticate server Specifies that the reauthentication period value for the client should be
obtained from the authentication, authorization, and accounting (AAA)
server as Session-Timeout (RADIUS Attribute 27).
reauthenticate value S pecifies the amount of time in seconds after which an automatic
reauthentication is initiated. Range is 1 to 65535. Default is 3600.
restart valu e S pecifies the amount of time in seconds after which an attempt is made to
authenticate an unauthorized port. Range is 1 to 65535. Default is Off.