Mobile IP

The Mobile IP protocol allows transparent routing of IP datagrams on the Internet. Each mobile node is identified by its home address disregarding its current location in the Internet. While away from home, a mobile node is associated with a care-of address which gives information about its current location. Mobile IP specifies how a mobile node registers with its home agent and how the home agent routes datagrams to the mobile node through a tunnel. Mobile IP provides an efficient, scalable mechanism for roaming within the Internet. Using Mobile IP, nodes may change their point-of-attachment to the Internet without changing their IP address. This allows them to maintain transport and higher-layer connections while moving. Node mobility is realized without the need to propagate host-specific routes throughout the Internet routing fabric.

Reference materials:

• Mobile IP

• Security for Mobile IP in the 3G Networks

• Mobile IP Technology Overview

• Introduction to Mobile IP

• Mobile IPv6 & Cellular Telephony

• http://en.wikipedia.org/wiki/Mobile_IP

• www.mobilein.com/mobile_IP.htm