Multicast buffered switch and method for operating a...

Multiplex communications – Pathfinding or routing – Switching a message which includes an address header

Reexamination Certificate

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C370S362000, C370S364000

Reexamination Certificate

active

06940856

ABSTRACT:
In an NXN switch a plurality of buses interconnect the individual input modules to all of the output modules in a predetermined sequence. The input modules store the received cells and a unique ID. When selected the input module places a cell and its ID on selected ones of the buses along with a multicast vector which identities which of the output modules is to process the cell on a bus. The output modules examine the multicast vector and process the cell (table lookup) if selected In the multicast vector. If an output module is unable to process a required cell (successful table lockup) it sets a retry vector resident on the bus and the input module modifies the multicast vector to indicate only those output module(s) which failed to process a required cell. The cell, the ID and the modified multicast vector are placed on a bus in a subsequent selection of that input module.

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