Intermec MobileLAN access WA21 System Manual page 273

Glossary
directional antenna
An antenna (often called a yagi) that transmits and receives RF signals
more in one direction than others. This radiation pattern is similar to the
light that a flashlight produces. These antennas have a narrower beam
width, which limits coverage on the sides of the antennas. Directional
antennas have much higher gain than omni antennas and work best for
covering large narrow areas or on point-to-point bridges.
distribution LAN
Any Ethernet LAN attached to access points that are bridging between the
Ethernet LAN and the radio network. At any given time, only one access
point in a distribution LAN provides access to the Ethernet LAN for a
given node in the domain.
DIX
A standardized Ethernet frame format developed by Digital Equipment
Corporation, Intel Corporation, and Xerox. Another frame format is
802.3.
EAP (Extensible Authentication Protocol)
Used in 802.1x-enabled networks. A standard mechanism for support of
different authentication methods. EAP authentication types provide
devices with secure connections to the network as well as protect
credentials and data privacy. See also "TLS" and "TTLS."
Ethernet bridging
When an access point receives wireless traffic and the destination address is
known, it forwards frames to the port with the shortest path to the
destination address. When the access point has not learned the direction of
the shortest path for the destination address, it forwards frames based on
flooding settings to try to locate the destination address.
flooding
A frame is flooded when the destination location is unknown. The
destination location of a multicast frame is never known. Unicast and
multicast flooding parameters determine how a flooded frame is
forwarded.
hello period
A time increment (usually 1, 2, or 3 seconds) that determines how often
the access point sends out a type of multicast frame so that it can
dynamically discover and test connections to other devices in the network.
Once this information is learned, the access point and routers can
exchange routing information.
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