Abstract: Aiming at the problem of currently rapid growth of global routing table size in DFZ, IETF has proposed to reconsider the Internet addressing architecture by splitting host identifier and its routing locator. LISP is considered to be one of the most promising solutions based on such idea,which was proposed by Cisco. I}his paper presented a novel mapping system for LISP proposal, elaborated the model and modes of this mapping system and also the allocation strategy of the hierarchical host identifier. Compared with other LISP-based mapping systems, the proposed mapping system has better scalability and lower mapping querying latency.

Key words: ID/Locator split, LISP, Mapping system, Identifier, Routing locator