CoRC: Coordinated routing and caching for named data networking

Named Data Networking (NDN) uses content names as routing entries, and thus the scalability of NDN routing is of primary concern. NDN allows in-network caching as a built-in functionality; however, if network nodes make caching decisions individually, duplicate copies of the same content may exist among nearby nodes. To address these problems, we propose Coordinated Routing and Caching (CoRC) that mitigates routing scalability and enhances the efficiency of the in-network storage. CoRC aligns the routing and caching mechanisms to manage the same content namespace for better performance. We evaluate CoRC (and its variants) with Vanilla NDN in terms of the cache hit ratio, hop count, and traffic load by running software routers on Amazon EC2. To demonstrate the feasibility of CoRC, we also implement and test the processing time of CoRC forwarding in Linux machines.