User`s guide

xvi Introduction to the Aironet PCMCIA Wireless LAN Adapter
Parent/Child Node - Refers to the relationships between nodes on the
Network Tree. For example, the Root Unit (at the top of the tree) would
be the Parent of the Repeater and the Repeater would be the Parent of
the end nodes. Conversely, the end nodes would be the Children of the
Repeater and the Repeater would be the Child of the Root Unit.
Registration - Each Access Point (Repeater or Root Unit) on the Radio
Network contains a Registration Table, used to control the routing of
packets from the Ethernet and the Radio Network. The table controls the
routing of packets by maintaining entries for all radio nodes situated
below the Access Point on the Network Tree.
Power Saving Protocol (PSP) and Non-Power Saving Protocol -
The Power Saving Protocol allows computers (usually portable comput-
ers) to power up only part of the time to conserve energy. If a Radio
node is using the Power Saving Protocol to communicate with the net-
work, the Access Points must be aware of this mode and implement
additional features such as message store and forward. While the PSP
Mode does provide greater battery life, it does increase the response
time for the data.
Registration Modes
The Aironet Client Card can be used in either ARLAN (default), PSP or
Non-ARLAN registration mode.
ARLAN Mode (Microcellular Architecture) - A high-traffic Radio
Network with one or more Access Points placed on a cabled backbone
LAN, and Aironet Client Cards installed in remote Radio nodes (PCs
and notebook computers).
Each Radio node registers to and communicates with the closest, or
user-specified Aironet Access Point. The Access Points perform routing
functions by moving data packets to and from the cabled LAN and
remote Radio nodes.
This mode provides automatic circuit hand-off and message forwarding,
as an Aironet Client Card user roams between LAN Access Point micro-
cells. In this way, large-scale, wireless LANs are configured.