3Com WX1200 Reference Manual page 307

9 To enable reauthentication of 802.1X clients, select Reauthentication.
To disable reauthentication, clear Reauthentication. By default,
reauthentication is enabled.
10 To specify the number of reauthentication requests the WX switch
attempts before a client becomes unauthorized, specify the value
(1 to 10) in the Reauthentication Attempts box. The default is 2 attempts.
If the number of reauthentications for a wired authentication client is
greater than the maximum number of reauthentications allowed, MSS
sends an EAP failure packet to the client and removes the client from the
network. However, MSS does not remove a wireless client from the
network under these circumstances.
11 To specify the number of seconds before reauthentication is attempted,
specify the timeout value, from 60 to 1,641,600 seconds (19 days), in the
Reauthentication Period box. The default is 3600 seconds (one hour).
MSS reauthenticates dynamic WEP clients based on the reauthentication
timer. MSS also reauthenticates WPA clients if the clients use the WEP-40
or WEP-104 cipher. For each dynamic WEP client or WPA client using a
WEP cipher, the reauthentication timer is set to the lesser of the global
setting or the value returned by the AAA server with the rest of the
authorization attributes for that client.
12 To enable WEP key rolling (rotation) of the broadcast and multicast WEP
keys, select WEP Key Rolling.
13 To specify the time to wait before rotating the WEP key, specify the value,
from 30 to 1,641,600 seconds, (19 days) in the WEP Key Rolling Period
box. The default is 3600 seconds (one hour).
14 To specify the number of seconds MSS retains session information for
Bonded Auth™ (bonded authentication) purposes for an authenticated
machine while waiting for the 802.1X client on the machine to start
(re)authentication for the user, specify the value, from 1 to 300 seconds,
in the Bonded Period box. The default is 0 seconds.
15 Click Save.
Viewing and Configuring Global 802.1X Settings 307