Method for high speed discrimination of policy in packet...

Details Method for high speed discrimination of policy in packet... Method for high speed discrimination of policy in packet...

2005-12-13

2005-12-13

Etienne, Ario (Department: 2157)

Electrical computers and digital processing systems: multicomput

Computer-to-computer data routing

Routing data updating

C709S238000, C709S223000, C709S228000, C709S240000

Reexamination Certificate

active

06976089

ABSTRACT:
The step of setting policy set tables includes the steps of generating one or more first-order policy set tables corresponding to one or more sections of packet information, respectively, each of said first-order policy set tables containing at least one policy sets having a predetermined number of policy members to be related with the corresponding section of the packet information; and pairing off said plurality of policy set tables to generate next-order policy set tables with all possible intersections of the paired first-order policy set tables. The step of discriminating the policy includes the steps of extracting one or more sections of packet information related to the policy information from the incoming packet; and querying to each of all the generated policy set tables with respective index values corresponding to each of the extracted packet information sections to discriminate the final policy for the incoming packet.

REFERENCES:
patent: 5797128 (1998-08-01), Birnbaum
patent: 5951651 (1999-09-01), Lakshman et al.
patent: 5990810 (1999-11-01), Williams
patent: 6529508 (2003-03-01), Li et al.
patent: 6604143 (2003-08-01), Nagar et al.
patent: 6691168 (2004-02-01), Bal et al.
patent: 6850521 (2005-02-01), Kadambi et al.

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