Achieving Scalable Push Multicast Services Using Global Name Resolution

This paper presents a novel approach to achieving scalable push multicast services using the distributed global name resolution service associated with emerging name-based network architectures. The proposed named-object multicast (NOMA) scheme employs unique names to identify multicast groups while using the global name resolution service (GNRS) to store the tree structure and maintain current mappings to mobile end-user addresses. The NOMA scheme achieves improved scalability and performance over conventional multicast protocols such as PIM-SM and MDSP by taking advantage of the GNRS to simplify tree management and limit control overhead. Performance evaluation results including comparisons with IP multicast are given using a combination of analysis and NS-3 simulation. The results show good scalability properties along with low control overhead for medium to large multicast groups. In addition, NOMA seamlessly handles mobility for end-hosts subscribed to a group, avoiding data losses upon mobility events. Results further demonstrate how separating names from addresses enables NOMA to dynamically forward traffic to mobile users. In conclusion, we describe a proof-of-concept prototype developed for further experimental validation of the proposed NOMA multicast routing scheme.