MOBILITY IN IP NETWORKS
The ip network infrastructure is not suitable for handling mobile nodes cause:
the foundamental block of an ip network, the ip address serves as a identification mechanism and a locator in order to route the packets
So due to the nature of an ip network, a mobile node that changes frequently network changes also is ip address and the packets needs to be routed to the new destination
there are 2 possible solution to handle the problem:
- location update the network infrastructure is informed of the mobile node position
- location search the network infrastructure search and updates the node position