Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2004-11-19
2008-10-07
Nguyen, Chau (Department: 2619)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S401000
Reexamination Certificate
active
07433357
ABSTRACT:
An apparatus and method for performing packet header lookup based on sequential lookup is provided. A header analyzer separates a header from a packet received via a network and outputs a lookup sequence. A unit lookup unit looks up matching the header combination rules with each field to be analyzed and input from the header analyzer based on the lookup sequence input from the header analyzer and outputs a match signal and a match address. A rule combination memory stores identification information for the header combination rules. A sequence combination memory stores lookup sequence information and sequence combination information. A rule combination unit generates match results based on the match signal input from the unit lookup unit and data read from the rule combination memory and the sequence combination memory.
REFERENCES:
patent: 1020020081569 (2002-10-01), None
“Reducing Routing Table Size Using Ternary-CAM”, H. Liu, 5 pages, Dept. of Electrical Engineering Stanford University, CA.
“A High-Speed Multi-Layer Lookup For Policy Based Packet Classification Using TCAM”, B. Choi, et al., Proceedings of the IASTED International Conference Communications Systems and Networks, Sep. 9-12, 2002 Spain, pp. 1-6.
“Reducing Routing Table Size Using Ternary-CAM”, H. Liu, 5 pages, Dept. of Electrical Engineering Stanford University, CA, Aug. 22-21, 2001.
Jang Jong Soo
Kim Ki Young
Oh Jintae
Shin Seung Won
Sohn Sung Won
Bell Louis
Blakely & Sokoloff, Taylor & Zafman
Electronics and Telecommunications Research Institute
Nguyen Chau
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