1 dbs a bit-level heuristic packet classification algorithm for high speed network author: baohua...

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DBS A Bit-level Heuristic Packet Classification Algorithm for High Speed Network

Author:Baohua Yang, Xiang Wang, Yibo Xue and Jun LiPublisher:International Conference on Parallel and Distributed Systems (ICPDS) 2009Presenter:Han-Chen ChenDate:2011/02/23

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Introduction Discrete Bit Selection

1. Use bitlevel heuristics to split rules efficiently

2. Adopt adaptive flat data structures to guarantee fast searching with low memory requirement

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DBS Algorithm (1/5)

E-bit

bit left right

1 5 1

2 3 3

3 5 1

4 3 3

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DBS Algorithm (2/5)

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DBS Algorithm (3/5)

Mask Vector Generation

Our motivation is to select the most effective mask vector which can split R into subsets as small as possible.

1. Sequential Forward Selection (SFS)

2. Heuristic Swap (HS)

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DBS Algorithm (4/5)

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DBS Algorithm (5/5)

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Performance Evaluation (1/8)

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Performance Evaluation (2/8)

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Performance Evaluation (3/8)

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Performance Evaluation (4/8)

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Performance Evaluation (5/8)

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Performance Evaluation (6/8)

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Performance Evaluation (7/8)

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Performance Evaluation (8/8)