Intermec MobileLAN access WA21 System Manual page 275

Glossary
IP tunneling
IP tunneling is used on networks with routers. IP tunneling allows wireless
end devices to roam across IP subnet boundaries without losing
connection. IP tunneling encapsulates standard IP frames with Generic
Routing Encapsulation (GRE) and forwards the frames from the root
access point on a home IP subnet to another access point on a remote IP
subnet. IP tunneling is done through the access points' logical IP ports.
MAC address
There are two types of MAC addresses: unicast and broadcast. Unicast
specifies a single Ethernet interface, while multicast specifies a group of
Ethernet addresses. Broadcast is a variation of multicast in which a
multicast is received by all interfaces.
MIB (Management Information Base)
This repository stores network traffic information that SNMP
management programs collect. Your network administrator can use
management software interacting with the MIB to obtain information
about network activity. Contact your local Intermec representative to learn
how to obtain a copy of the MIB for the access point.
multicast address
A form of broadcast address through which copies of the frame are
delivered to a subset of all possible destinations that have a common
multicast address.
NAT (Network Address Translation)
A mechanism for reducing the need for different IP addresses. NAT allows
an organization with IP addresses that are not unique to connect to the
network by translating those addresses into routable address space. The
access point can act as a DHCP/NAT server.
non-bridging secondary LAN
A secondary LAN that does not have a designated bridge. A non-bridging
secondary LAN is used to interconnect access points without using
wireless hops.
omni antenna
An antenna that transmits and receives RF signals in all directions equally
on a horizontal plane. This radiation pattern is similar to a doughnut with
the antenna being in the center of the doughnut hole. These antennas
provide the widest coverage and are most commonly used inside buildings.
outbound frames
Frames moving away from the primary LAN.
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