Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Patent
1996-07-18
1999-09-21
Olms, Douglas W.
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
370429, 370432, 370905, 3408255, H04L 1256
Patent
active
059563427
ABSTRACT:
An Asynchronous Transfer Mode switch and method which facilitate priority arbitration of point-to-point and point-to-multipoint transmission are disclosed. To execute point-to-multipoint operation a bandwidth arbiter maintains a first list of connections and bit vectors indicating designated destination ports. The list maintained by the bandwidth arbiter is then compared to an unassigned output port bit vector to determine matches therebetween at which point-to-multipoint transmission may be made by utilizing instantaneously unused bandwidth within the switch. To execute point-to-point operation each input port maintains a list of connections associated with each output port, and those lists are used in conjunction with output port request information per input port in the bandwidth arbiter to match requests to the unassigned output port bit vector. The bandwidth arbiter may also assign priority to connections in the list.
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Caldara Stephen A.
Colsman Matthias L.
Hauser Stephen A.
Manning Thomas A.
Fujitsu Limited
Fujitsu Network Communications, Inc.
Olms Douglas W.
Rao Seema S.
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