Cisco Cisco Gigabit Ethernet Switch Module (CGESM) for HP Technical References

Use the dot1x re-authenticate privileged EXEC command to manually initiate a re-authentication of 
the specified IEEE 802.1x-enabled port.

dot1x re-authenticate interface interface-id

There is no default setting.

Privileged EXEC

You can use this command to re-authenticate a client without waiting for the configured number of 
seconds between re-authentication attempts (re-authperiod) and automatic re-authentication.

This example shows how to manually re-authenticate the device connected to a port:

Switch# dot1x re-authenticate interface gigabitethernet0/1

interface interface-id

Module and port number of the interface to re-authenticate.

12.2(25)SE1

This command was introduced.

Enables periodic re-authentication of the client.

Sets the number of seconds between re-authentication 
attempts.