Symmetric dual-slot data hash method and network switching...

Details Symmetric dual-slot data hash method and network switching... Symmetric dual-slot data hash method and network switching...

2006-08-29

2006-08-29

Ferris, Derrick (Department: 2616)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S428000

Reexamination Certificate

active

07099321

ABSTRACT:
A symmetric dual-slot data hash method and a switching apparatus using the same having a first block and a second block of equal size for storing MAC addresses. The size of the dual-slot address table is p×2m with m is an integer, and p is 2 or a prime. The hash address comprises a higher address portion and a lower address portion. A CRC hash operation is performed to the MAC address by using the m-bit CRC function to obtain a hash value. Next, the highest bit of the hash value is removed and the remained bits are used as the lower address portion of the hash address. A dividend is set according to the m-th bit of the MAC address. After the dividend is divided by a divisor p to obtain a remainder, the remainder is set as a higher address portion of the hash address.

REFERENCES:
patent: 6690667 (2004-02-01), Warren
patent: 6819671 (2004-11-01), Chen et al.

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