MNs that are not registered with any IN operate in ad hoc mode. All such MNs which are reachable from each other belong to a single AZ.
Control Zone (CZ)
The collection of all MNs registered with a given IN are said
to belong to the ``Control Zone'' of that IN. The radius of the
CZ is decided by the IN.
Foreign Agent (FA)
When an MN moves from one CZ to another, the new IN it registers with becomes its FA.
Home Agent (HA)
It is the first IN with which an MN registers with. The HA of an MN never changes.
Infrastructure Node (IN)
A node which maintains topology information of its
CZ and provides services to all MNs in its CZ.
Mobile Node (MN)
A mobile node is a node which uses the IBAR routing
protocol.
Node
A wireless enabled machine. It can be a laptop, PDA,
Simputer or any other mobile device.
Registration
An IN offers MNs the service of finding optimal routes to
desired destinations. An MN can avail itself of this service by
``Registering'' itself with the IN.
Source Route
The complete route from a source node in a network
to a destination node which specifies all the
intermediate nodes through which the packet has to
pass.
