A Handoff Method Based On AAA For MIPv6

After we come into the 21 century, as the development of computer and communication technology, people can not live without the convenient of internet. For most people, internet becomes the essential part of daily life. At present, most internet use traditional broadband interface, and this can not satisfy the requirement of modern people; under the high quality of modern life, people want uninterrupted internet service everywhere like different geography situations. So the mobile IP technology comes out.Mobile IP technology provide mobile function solution based on the internet, it including expansibility, security, stability, and make the mobile node keep communicate when switch between different communication link. It provides a IP router mechanism, allow mobile IP use one permit IP address to connect any communication links.In the era of commercial demand increased day by day, the mobile IP protocol combined with AAA (Authentication, Authorization and Accounting) technology is widely used in authentication, authorization and billing issues. However, compared to single mobile IP switch protocol, because MIPv6-AAA model need achieve AAA user's authentication and authorization in the process of switch, so it will generate more switch time delay, and also have security issues. Therefore, this article give a new MIPv6 switch method, it is when MN switch in the inner-domain, do not need the authentication of home domain, and reduce the switch time; but when switch in the inter-domain it will set mobile node agent (MNA) to save original MN information temporarily, to avoid the registration process failed, and increase the security. This solution achieved MIPv6-AAA model optimization through improve these two areas.