Method of roaming of a dual stack capable MIPv6 node between IPv6 and IPv4 network

摘要

The present invention provides a host can even enter the IPv4-only hosts and corresponding dual-mode network can continue to communicate allows. R router that supports IPv6-IPv4 tunneling presupposes that existing in the management area of the home network. The invention enables MIPv6 roaming method of a dual node between an IPv6 network and an IPv4 network includes the following steps: The router in the home network; (A) a new option (option) has the step of generating a router advertisement, the router advertisement tells the IPv6 and IPv4 addresses of the router that supports IPv6-IPv4 tunneling R to the host (or mobile node); In the router R, (b) to act as a router R is a step that is activated (activate) the transition to IPv4 (transitioned) proxy for all hosts (proxy); (C) the support mechanism for setting an IPv6 address for all of the host to switch to the IPv4; In a mobile node, (d) understand the new option (option) contained in the router advertisement, and the step of setting the IPv6 and IPv4 addresses of a router R; (E) that once the host is when it enters the IPv4-only network-initiated tunnel between the host and the router R generating step; (F) the host (or mobile node), the method comprising: supporting a mechanism to fix the end point of the tunnel when moving to another network (end points) from the IPv4-only network; And (g) steps to support a mechanism to remove the bi-directional tunnel when you return to the host (or mobile node) is an IPv6 network.