User`s guide

Introduction
1-6
Repeater – A repeater is an Access Point that extends the
radio range of the infrastructure. A repeater is not physically
attached to the wired LAN, but communicates via radio to
another Access Point, which is either a root unit or another
repeater.
Root Unit – The root unit is an Access Point that is located
at the top, or starting point, of a wireless infrastructure. A
root unit provides the physical connection to the wired LAN
(such as Ethernet or Token Ring) and contains configuration
information in its association table that covers all nodes that
access the wired infrastructure. All Access Points directly
attached to the wired LAN backbone are root units.
Service Set Identifier – A unique identifier that is attached
to selected packets sent out over the radio network. This
functions as a password to join the radio network.