SVDR: A scalable virtual domain-based routing scheme for CCN

Content Centric Networking (CCN) is a new networking paradigm where communication pattern is shifted from host-based to content-based. It defines all resources as contents and builds Forwarding Information Base (FIB) indexed with content names instead of addresses. Hence, with the growth of content, scalability becomes the Achilles heel in CCN. To solve it, we propose the Scalable Virtual Domain-based Routing (SVDR) scheme that alleviates FIB scalability in view of memory cost and populating overhead. SVDR leverages the concept of virtual domain to reduce route entries maintained in FIB and puts forward a two-stage routing protocol to build FIB with light populating overhead. Moreover, the improved methods are proposed to enhance scalability of SVDR further based on the influence analysis of virtual domain structure on FIB load. Performance evaluation demonstrates that SVDR reduces FIB load significantly with low populating overhead.