Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Patent
1995-10-25
1997-11-04
Hsu, Alpus H.
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
370392, 370397, 370413, H04L 1256
Patent
active
056847971
ABSTRACT:
A multicasting apparatus and method for an Asynchronous Transfer Mode (ATM) switch is described, which uses a single target port (TP) vector attached to each outgoing ATM cell. The target port vector contains identifiers of each port to which the cell has to be transmitted. After transmission of the cell, the identifier relating to respective target port is erased from the TP vector. Hence the TP vector contains only identifiers of target port to which the cell has not yet been transmitted. When the TP vector contains no identifiers, the storage location at which the ATM cell is stored during the transmission, is freed for another cell. Unicast and multicast traffic are treated identically.
REFERENCES:
patent: 5301192 (1994-04-01), Henrion
patent: 5305311 (1994-04-01), Lyles
patent: 5394397 (1995-02-01), Yanagi et al.
patent: 5402415 (1995-03-01), Turner
patent: 5436893 (1995-07-01), Barnett
patent: 5535197 (1996-07-01), Cotton
European Search Report.
Aznar Ange
Calvignac Jean
Orsatti Daniel
Rigal Dominique
Verplanken Fabrice
Hsu Alpus H.
International Business Machines - Corporation
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