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CacheCast: Eliminating Redundant Link Traffic for Single Source Multiple Destination Transfers

Srebrny, Piotr and Plagemann, Thomas and Goebel, Vera and Mauthe, Andreas (2010) CacheCast: Eliminating Redundant Link Traffic for Single Source Multiple Destination Transfers. In: ICDCS '10: Proceedings of the 2010 IEEE 30th International Conference on Distributed Computing Systems. IEEE Computer Society, Washington, DC, USA, pp. 209-220. ISBN 978-1-4244-7261-1

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Abstract

Due to the lack of multicast services in the Internet, applications based on single source multiple destinations transfers such as video conferencing, IP radio, IPTV must use unicast or application layer multicast. This in turn has several well-known drawbacks. A basic insight is that this type of traffic exhibits high redundancy with temporal clustering of duplicated packets. The redundancy originates from multiple transfers of the same data chunk over the same link. We propose CacheCast-a link layer caching mechanism-that eliminates the redundant data transmissions using small caches on links. CacheCast's underlying principles are simplicity and reliability. It is a fully distributed and incrementally deployable architecture. It consists of small caches on links that act independently. A single cache removes redundant data from a packet on the link entry and recovers the data on the link exit. Thus, link caches are transparent to routers. We show through analysis and simulation that CacheCast achieves near multicast efficiency for superposition of unicast connections. We implemented CacheCast in ns-2 and show that it does not violate the current understanding of "fairness" in the Internet.

Item Type: Contribution in Book/Report/Proceedings
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Departments: Faculty of Science and Technology > School of Computing & Communications
ID Code: 57231
Deposited By: ep_importer_pure
Deposited On: 17 Aug 2012 10:07
Refereed?: No
Published?: Published
Last Modified: 18 Sep 2014 16:51
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/57231

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