Exploit the known or explore the unknown?

Raffaele Chiocchetti, Dario Rossi, Giuseppe Rossini, Giovanna Carofiglio, Diego Perino
2012 Proceedings of the second edition of the ICN workshop on Information-centric networking - ICN '12  
Most Information Centric Networking designs propose the usage of widely distributed in-network storage. However, the huge amount of content exchanged in the Internet, and the volatility of content replicas cached across the network pose significant challenges to the definition of a scalable routing protocol able to address all available copies. In addition, the number of available copies of a given content item and their distribution among caches is clearly impacted by the request forwarding
more » ... icy. In this paper we gather initial design considerations for an ICN request forwarding strategy by spanning over two extremes: a deterministic exploitation of forwarding information towards a "known" copy and a random network exploration towards an "unknown" copy, via request flooding. By means of packet-level simulations, we investigate the performance trade-offs of exploitation/exploration approaches, and introduce an hybrid solution. Our forwarding scheme shows a good potential, whether carefully tuned, in terms of delivery performance, implicit cache coordination and possible reduction of forwarding table size.
doi:10.1145/2342488.2342491 dblp:conf/acmicn/ChiocchettiRRCP12 fatcat:xohaj3ycq5h4tmc2imfzqlyxay