NDLI: Hybrid trie based partitioning of TCAM based openflow switches

Content Provider	IEEE Xplore Digital Library
Author	Veeramani, S. Kumar, M. Mahammad, S.K.N.
Copyright Year	2013
Abstract	The packet forwarding mechanism in the open flow network switch is based on the IP lookup in the forwarding table, which consist of the destination IP address of the incoming packet. In general, these forwarding tables are Content Addressable Memory (CAM), where the desire key will be searched in the table to know out going port. Ternary content addressable memory (TCAM) is one of the efficient mechanism to store the forwarding table, where values are stored in sorted order. Search of any key is done by using longest prefix matching technique. It uses 0, 1 and x (don't care) to represent the data, rather using 0 and 1 in case of CAM. The major drawback of TCAM is that it is a power hungry circuit. Today's high-density TCAMs consumes 12 to 15 Watts of power per chip, when the entire memory is enabled. This paper proposes an efficient representation of data in the forwarding tables and search algorithm which takes the algorithmic time complexity is O(loglog n). This paper also proposes an efficient way to reduce the index TCAM size by using y-Fast trie-partitioning algorithm.
Sponsorship	IEEE Commun. Soc.
Starting Page	1
Ending Page	5
File Size	103111
Page Count	5
File Format	PDF
ISBN	9781479914777
ISSN	21531676
DOI	10.1109/ANTS.2013.6802844
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-12-15
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Random access memory Vegetation Binary search trees Partitioning algorithms Complexity theory Indexes IP networks
Content Type	Text
Resource Type	Article

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