Efficient IP lookup using hybrid trie-based partitioning of TCAM-based open flow switches

Efficient IP lookup using hybrid trie-based partitioning of TCAM-based open flow switches IP forwarding technique in open flow switch can be done by comparing the destination IP address, which is stored in forwarding table with the input IP prefix. Ternary content-addressable memory (TCAM) is one of the popular mechanisms to store and forward IP packet where flow entries are organized in sorted manner. Searching a prefix value in TCAM uses longest prefix match rather than exact match technique. The major drawback of TCAM is high power consumption (12–15 Watts per chip) due to increase in lookup time. The objective of this paper was to reduce the search time of a key, which is stored in the forwarding table. This paper also proposes an efficient way to represent data and to reduce the index TCAM size by using $$y$$ y -fast trie-partitioning algorithm, and it will take search time complexity of $$O(loglog~n)$$ O ( l o g l o g n ) . http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Photonic Network Communications Springer Journals

Efficient IP lookup using hybrid trie-based partitioning of TCAM-based open flow switches

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Publisher
Springer Journals
Copyright
Copyright © 2014 by Springer Science+Business Media New York
Subject
Computer Science; Computer Communication Networks; Electrical Engineering; Characterization and Evaluation of Materials
ISSN
1387-974X
eISSN
1572-8188
D.O.I.
10.1007/s11107-014-0466-y
Publisher site
See Article on Publisher Site

Abstract

IP forwarding technique in open flow switch can be done by comparing the destination IP address, which is stored in forwarding table with the input IP prefix. Ternary content-addressable memory (TCAM) is one of the popular mechanisms to store and forward IP packet where flow entries are organized in sorted manner. Searching a prefix value in TCAM uses longest prefix match rather than exact match technique. The major drawback of TCAM is high power consumption (12–15 Watts per chip) due to increase in lookup time. The objective of this paper was to reduce the search time of a key, which is stored in the forwarding table. This paper also proposes an efficient way to represent data and to reduce the index TCAM size by using $$y$$ y -fast trie-partitioning algorithm, and it will take search time complexity of $$O(loglog~n)$$ O ( l o g l o g n ) .

Journal

Photonic Network CommunicationsSpringer Journals

Published: Aug 21, 2014

References

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