Implementation of a parallel-search trie-based scheme for fast IP lookup

  • Authors:
  • Roberto Rojas-Cessa;Laksmi Ramesh;Ziqian Dong;Brian D'Alessandro;Nirwan Ansari

  • Affiliations:
  • New Jersey Institute of Technology;New Jersey Institute of Technology;New Jersey Institute of Technology;New Jersey Institute of Technology;New Jersey Institute of Technology

  • Venue:
  • CSNA '07 Proceedings of the IASTED International Conference on Communication Systems, Networks, and Applications
  • Year:
  • 2007

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Abstract

The Internet Protocol (IP) address lookup is required to be resolved fast to keep up with data rate increases. To cope with the increasing number of entries, solutions for IP lookup based on random access memory (RAM), which store prefixes in a trie-based structure, are of interest. In this paper, we propose a flexible and fast trie-based IP-lookup algorithm where parallel searching is performed. This algorithm performs lookup in a maximum of two memory-access times while using a feasible amount of memory.