A Comparative review of IPv6 and Mobile IPv6 : Changes in Mobile IPv6 over Ipv6

Mobile IPv6 is an update of IETF (Internet Engineering Task Force). Mobile IP standard which has been designed to authenticate the mobile devices or nodes using IPv6 addresses acts as a backbone for the next generation wireless Internet Technology to provide an uninterrupted network service while on the move. It also permits an IPv6 node to change its location and address and also maintain the connectivity with all the other IPv6 nodes. This paper basically conducts a comparative review of IPv6 and MIPv6 as to how MIPv6 has evolved as a subset of Internet Protocol Version 6 (IPv6) to mobile connections. The paper benchmarks the protocol variations against the standard IPV6 protocol. The mobile communication services have undergone a remarkable growth and apart from that all the services providing Internet access with the help of mobile terminals are gradually increasing. The rising number of portable computers, combined with the growth of wireless services has also enhanced the importance of Internet Mobility. The researhes've concluded that IP is the correct layer to implement the basic mobility support. In context to support mobility at IP layer, the challenge is to handle the address changes or we can say that it is required to maintain the uninterrupted connections among nodes when they change their IP address during the movement. Mobile IP has been designed by IETF to serve the requirements of the large numbers of mobile computer users who want to connect to the Internet and maintain the communications when they move from one place to place. To provide mobility, Mobile IP extends IP to allow the mobile computers to allow the mobile computers to have 2 addresses, one for identification and other for routing. This way Mobile IP as a technology permits users to remain connected across the wire line like Ethernet and wireless like 802.11, cellular and satellite networks while roaming between networks. This helps users to stay connected while being on the way from house to airport instead of switching off their PDAs at their place and reconnecting with wi-fi at the airport. Versions of IP