User`s guide

xiv Introduction to the Aironet PCMCIA Wireless LAN Adapter
Additional security is achieved through the use of a System Identifier
(SID). The SID is a unique, 6 hexadecimal digit value that is attached to
each packet sent out over the radio. With over 8 million possible SID
settings, a high degree of privacy and security can be assured. See
Chap-
ter 3 - Utilities
for detailed information on setting the System Identifier.
Radio Network Terminology
When configuring your system, and when reading this User Guide, keep
in mind the following Radio Network terminology:
Network Tree - Conceptually, Aironet’s Advanced Radio Local Area
Network (ARLAN) is designed like an upside-down tree, (see Figure
0.2) with a Root Unit at the top, and Repeaters and Radio nodes branch-
ing down and out from the Root.
Root Unit - An Access Point which is located at the top of a Network
Tree. The Root Unit is the starting point in the network and contains
information in its Registration Table regarding all nodes on the network.
Repeaters - A Repeater is a wireless Access Point which is used to
extend the radio range of your network. A single Access Point is limited
to a specific RF range. If your system configuration includes nodes out-
side this range, you will need to add a Repeater in order for them to
communicate.
Radio Node - A PC, notebook computer, etc. containing a Radio Card.
End Node - A Radio Node that is located at the end of the Network
Tree.