Technique for fast and efficient internet protocol (IP)...

Details Technique for fast and efficient internet protocol (IP)... Technique for fast and efficient internet protocol (IP)...

2005-05-17

2005-05-17

Etienne, Ario (Department: 2157)

Electrical computers and digital processing systems: multicomput

Computer-to-computer data addressing

C709S242000, C709S238000

Reexamination Certificate

active

06895442

ABSTRACT:
The present invention provides a method, system, and computer program product for fast and efficient IP (Internet Protocol) address lookup. IP address values are interpreted using a separate array for each 8-bit component of the address. This technique is therefore exploitable in a multi-processing environment. The IP address look-up time when using the present invention is nearly constant, regardless of the particular address value. Minimal, if any, locking is required. This technique can be used equally well with class-specific IP version432-bit addresses and with Classless Inter-Domain Routing (CIDR), and easily extends to use with IP version6128-bit addresses.

REFERENCES:
patent: 6381638 (2002-04-01), Mahler et al.
patent: 6466779 (2002-10-01), Moles et al.
patent: 6603769 (2003-08-01), Thubert et al.
patent: 6647427 (2003-11-01), Watanabe
patent: 6658481 (2003-12-01), Basso et al.
patent: 6711623 (2004-03-01), Furukawa et al.
“Routing Lookups in Hardware at Memory Access Speeds”, P. Gupta; S. Lin and N. McKeown, Computer Systems Laboratory, Stanford University.

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