A Hierarchical Mapping System for LISP
This draft proposes a Hierarchical Mapping System (HMS) for Locator/ID Separation Protocol (LISP). HMS uses a hierarchical architecture as well as one-hop DHT (Distributed Hash Tables). HMS composes two levels with the bottom level maintaining EID-to-RLOC mappings in an Autonomous System (AS) and the upper level storing the global EID-prefix-to-AS mappings. The bottom level is organized in one-hop DHT and the upper level propagates EID-prefix-to-AS mappings using a protocol like BGP. HMS builds an efficient and scalable mapping system to provide RLOCs for a given EID.