Packet Filtering for FPGA-Based Routing Accelerator

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Authors

ANTOŠ David ŘEHÁK Vojtěch HOLUB Petr

Year of publication 2006
Type Article in Proceedings
Conference CESNET Conference 2006 Proceedings
MU Faculty or unit

Institute of Computer Science

Citation
Web http://www.ces.net/conference06/
Field Computer hardware and software
Keywords packet filtering; hardware accelerated routing; filtring rules transformation; filtering decision diagram; binary decision diagram
Description In this paper, we present a novel approach for Binary Decision Diagram based semantically extended representation of packet filters called Filter Decision Diagrams (FDD), used for efficient filter processing and lookup in a hardware accelerator that uses a lookup engine employing CAM and comparison instructions kept in SRAM. We present the most important operations for FDDs and also give some complexity estimate. We also analyze and compare expressing power of the most commonly available packet filters.
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