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11th IEEE Symposium on Computers and Communications (ISCC'06)
Packet Forwarding Using Pipelined Multibit Tries
Cagliari, Sardinia, Italy
June 26-June 29
ISBN: 0-7695-2588-1
Wencheng Lu, University of Florida, USA
Sartaj Sahni, University of Florida, USA
We propose a heuristic for the construction of variablestride multibit tries. These multibit tries are suitable for packet forwarding using a pipelined architecture. The variable-stride tries constructed by our heuristic require upto 1/32 of the per-stage memory required by optimal pipelined fixed-stride tries. We also develop a tree packing heuristic, which dramatically reduces the per-stage memory required by fixed- and variable-stride multibit tries constructed for pipelined architectures. On publicly available router databases, our tree packing heuristic reduces the maximum per-stage memory required by optimal pipelined fixed-stride tries
Index Terms:
Packet classification, longest matching prefix, controlled prefix expansion, fixed-stride tries, variable-stride tries, dynamic programming.
Citation:
Wencheng Lu, Sartaj Sahni, "Packet Forwarding Using Pipelined Multibit Tries," iscc, pp.802-807, 11th IEEE Symposium on Computers and Communications (ISCC'06), 2006
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