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Issue No. 01 - January (2009 vol. 58)
ISSN: 0018-9340
pp: 5-17
Miad Faezipour , University of Texas at Dallas, Richardson
Mehrdad Nourani , University of Texas at Dallas, Richardson,
Most conventional packet classifiers find only the highest priority filter that matches the arriving packet. However, new networking applications such as network intrusion detection systems and load balancers require all (or the first few) matching packets during classification. In this paper, two TCAM-based architectures for multi-match search are introduced. The first one is a renovated TCAM design that can find all or the first r matches in a packet filter set. The second architecture is a novel partitioning scheme based on filter intersection properties allowing us to use off-the-shelf TCAMs for multi-match packet classification. Our classifier engine finds all matches in exactly one conventional TCAM cycle while reducing the power consumption by at least two orders of magnitude, which is far better than the existing hardware based designs.
Network-level security and protection, Network monitoring, Classifier design and evaluation, System architectures, integration and modeling

M. Faezipour and M. Nourani, "Wire-Speed TCAM-Based Architectures for Multimatch Packet Classification," in IEEE Transactions on Computers, vol. 58, no. , pp. 5-17, 2008.
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