Hash-routing schemes for information centric networking

Hash-routing has been proposed in the past as a mapping mechanism between object requests and cache clusters within enterprise networks. In this paper, we revisit hash-routing techniques and ap-ply them to Information-Centric Networking (ICN) environ-ments, where network routers have cache space readily avail-able. In particular, we investigate whether hash-routing is a viable and efficient caching approach when applied outside enterprise networks, but within the boundaries of a domain. We design five different hash-routing schemes which effi-ciently exploit in-network caches without requiring network routers to maintain per-content state information. We evaluate the proposed hash-routing schemes using ex-tensive simulations over real Internet domain topologies and compare them against various on-path caching mechanisms. We show that such schemes can increase cache hits by up to 31 % in comparison to on-path caching, with minimal impact on the traffic dynamics of intra-domain links