User's Manual

Menus and Parameters
Manual Revision 1.0
4-75
Roaming Option (SU only)
The Roaming Option defines the roaming support of the unit. When
roaming is not expected, it is preferable to set this parameter to Disable.
This will cause the unit to start scanning for another AU after loosing
connectivity with the current AU only after 7 seconds during which no
beacons were received from the current AU. This will prevent scanning
for another AU in cases where no beacons were received due to a short
temporary problem.
When set to Enable, the SU will wait only one second before it starts
scanning for another AU. In addition, when the Roaming Option is
enabled, the SU will send Roaming SNAP messages upon associating
with a new AU. This enables fast distribution of the new location for all
clients that are behind the SU. In this case, the SU will send multicast
SNAP messages via the wireless link each time it associates with a new
AU, except for the first association after reset. The SU will send one
SNAP message for each client learned on its Ethernet port, based on its
bridging table. In the SNAP message the clients’ MAC address is used as
the source address. The AU that receives this SNAP message learns
from it the new location of the clients. It forwards the SNAP to other
AUs and Layer-2 networking equipment via its Ethernet port, to
facilitate uninterrupted connectivity and correct routing of
transmissions to these clients. The new AU as well as the previous AU
with which the SU was associated, will forward the SNAP messages to
all other SUs associated with them.
The default is Disable.
Show Bridge Parameters
The Show Bridge Parameters option displays the current values of the
Bridge parameters.