TCAM organization for IPv6 address lookup

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review

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Author(s)

Detail(s)

Original languageEnglish
Title of host publicationThe 7th International Conference on Advanced Communication Technology, ICACT 2005
Pages26-31
Volume1
Publication statusPublished - 2005

Publication series

Name
Volume1

Conference

Title7th International Conference on Advanced Communication Technology, ICACT 2005
PlaceKorea, Republic of
CityPhoenix Park
Period21 - 23 February 2005

Abstract

Majority of the IPv6 prefixes are 48 to 64 bits long. Conventional approach that configures the TCAM array to use 144-bit wards to store IPv6 prefixes bas a rather low space efficiency. Because of the limited number of I/O pins, an 128-bit IPv6 address has to be entered to the TCAM in 2 steps. If the longest matching prefix is only up to 64 bits, it may not be necessary to process the second half of the IP address. In this paper, we propose a two-level routing table organization in TCAM that can reduce the space requirement and speed up the lookup time by 40% or more. Our method is compatible with commercially available TCAM devices.

Research Area(s)

  • IPv6 address lookup, Longest matching prefix, Ternary content addressable memory, Two-level routing table organization

Citation Format(s)

TCAM organization for IPv6 address lookup. / Pao, Derek.

The 7th International Conference on Advanced Communication Technology, ICACT 2005. Vol. 1 2005. p. 26-31 1461723.

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review