Multiplex communications – Wide area network – Packet switching
Patent
1988-09-27
1989-09-05
Griffin, Robert L.
Multiplex communications
Wide area network
Packet switching
370 93, H04Q 1104
Patent
active
048645591
ABSTRACT:
A method for multicast communication wherein a multicast message is distributed to all the nodes in a multicast range. If a multicast message has a multicast range which is larger than one link in the network then the message is forwarded along a unique set of pathways through the range. The unique set of pathways is called a multicast spanning tree and is unique to all nodes which can communicate directly by virtue of a list of known nodes. The network is divided into areas each of which contains a group of directly communicating nodes. A group of nodes designated as level two nodes facilitates communication between the nodes in different areas.
REFERENCES:
patent: 4740954 (1988-04-01), Cotton et al.
patent: 4760572 (1988-07-01), Tomikawa
Dering, Steven E., "Multicast Routing in Internetworks and Extended LANs," 1988 ACM pp. 55-64 IEEE Network, vol. 2, No. 1 (Jan., 1988).
Wall, David W., "Mechanisms for Broadcast and Selective Broadcast," Technical Report No. 190, Standford Electronics Laboratory, Stanford University (Jun., 1980).
Delal, Yogen K., "Broadcast Protocols in Packet Switch Computer Networks," Technical Report No. 128, Standford Electronics Laboratories, Stanford University (Apr., 1977).
Boggs, David R., "Internet Broadcasting," (Oct., 1983).
Wall, David W. et al, "Construction of Centered Shortest-Path Trees in Networks," Networks, vol. 13, pp. 207-231 (1983).
Digital Equipment Corporation
Griffin Robert L.
Scutch III Frank M.
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