Method for accepting mobile IP in MPLS domain network

摘要

PURPOSE: A method for accepting a mobile IP in an MPLS(Multi-Protocol Label Switching) network is provided to make MPLS interworked with a mobile IP by combining a mobile IP registration message with MPLS label distribution and to prevent an abuse of headers by utilizing 2-layer tunneling, not 3-layer encapsulation, in tunneling an IP packet in a service network. CONSTITUTION: In configuring a service packet network for IMT-2000 service, an MPLS network accepting a mobile IP is suggested. Under this structure, a topology driven label distribution method and an MIP registration request driven label distribution method are presented. Accordingly, the MPLS network accepting the mobile IP doesn't require 3-layer IP header for transmission to an external agent in tunneling in a network, as compared with a simple combination structure of the mobile IP and the MPLS network.