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 apply them to Information-Centric Networking (ICN) environments, where network routers have cache space readily available. 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 efficiently exploit in-network caches without requiring network routers to maintain per-content state information. We evaluate the proposed hash-routing schemes using extensive 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.
Saino et al. REF use a hash routing scheme in Information Centric Networks.
Hash-routing schemes for information centric networking
ICN '13
Computer Science