Multiplex communications – Wide area network – Packet switching
Patent
1991-01-30
1994-03-22
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 8515, 370 941, H04L 1256
Patent
active
052971376
ABSTRACT:
A dynamic technique for routing data packets between entry and destination nodes of a multi-node communication network of arbitrary topology In accordance with this technique, the nodes of the network are connected together by a multitude of links, and a subset of these links form a virtual ring embedded in the network and traversing each node thereof at least once. The nodes route each data packet to a destination node without requiring any data from the data packet other than data identifying the destination node of the data packet. Also, the nodes route each data packet to its destination node such that the distance, along the virtual ring, between the data packet and its destination node always decrease. Data packets in the virtual embedded ring have priority to continue to be routed on the ring. As a result, lossless routing with a single buffer per each input link is provided. The objective of the routing function of every intermediate node is to try to decrease the distance to the destination as much as possible.
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Ofek Yoram
Yung Marcel M.
International Business Machines - Corporation
Kizou Hassan
Olms Douglas W.
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