Intermec MobileLAN 21 Series System Manual page 257

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Glossary
IAPP (Inter Access Point Protocol)
Access points use this protocol to communicate with each other. For example, when a
wireless end device roams to a new access point, the new access point informs the old
access points via the root access point that any traffic for the end device needs to be
routed to the new access point.
IGMP (Internet Group Management Protocol)
IGMP allows the access point to have more than eight IP tunnels. IGMP allows a access
point to participate in an IP multicast group without any special router configuration.
inbound frames
Frames moving toward the primary LAN.
IP subnet
A single member of the collection of hardware networks that composes an IP network.
Host addresses on a given subnet share an IP network number with hosts on all other
subnets of the IP network. The local address is divided into subnet-number and host-
number fields to indicate which subnet a host is on.
IP tunneling
IP tunneling is mainly 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.
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