Multicasting apparatus and method in shared memory switch

Details Multicasting apparatus and method in shared memory switch Multicasting apparatus and method in shared memory switch

2006-04-04

2006-04-04

Ngo, Ricky (Department: 2663)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S395700, C370S395720

Reexamination Certificate

active

07023850

ABSTRACT:
A multicasting system and method for use in a shared memory-based switch that includes an input subqueue reading block for reading out data inputted thereto, selecting one bit from an output port bitmap at a time and outputting output port information of one bit and class information as a data stream together with an enable signal. The system also includes a queue number encoding block for encoding the bitmap type of output port information provided thereto from the input subqueue reading means, creating a queue number of the output subqueues based on the encoded output port information and the class information and outputting the same together with an enable signal; and an output subqueue writing block for writing an assigned non-use address of the output subqueues in a tail address of corresponding output subqueue, responsive to the information from the input subqueue reading means and replacing a subsequent tail address of the corresponding output subqueue with a newly assigned non-use address, thereby writing a corresponding pointer in the corresponding output subqueue.

REFERENCES:
patent: 5923654 (1999-07-01), Schnell
patent: 6128278 (2000-10-01), Joffe et al.
patent: 6128295 (2000-10-01), Larsson et al.
patent: 6144662 (2000-11-01), Colmant et al.
patent: 6789176 (2004-09-01), Uriu et al.

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