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AssigneeInternational Business Machines Corporation
InventorsIsrael Cidon, David W. Davenport, Jeffrey H. Derby, John G. Dudley, Inder S. Gopal, James P. Janniello, Marc A. Kaplan, Francis R. Koperda, Shay Kutten, Kenneth H. Potter, Jr.
Estimating the term…
A packet communications system provides for point-to-point packet routing and multicast packet routing to limited subsets of nodes in the network, using a routing field in the packet header which is processed according to two different protocols. A third protocol is provided in which a packet can be multicast to the limited subset even when launched from a node which is not a member of the subset. The routing field includes a first portion which contains the route labels necessary to deliver the packet to the multicast subset. A second portion of the routing field contains the multicast subset identifier which can then be used to deliver the packet to all of the members of the multicast subset. Provision is made to backtrack deliver the packet to the last node identified before the multicast subset if that last node is itself a member of the subset.
A packet transmission system for digital data packets including a header, said system comprising
A method for routing packets in a packet transmission system for digital data packets including a header, said method comprising the steps of
A packet switching point for a packet transmission system transmitting data packets with headers containing routing labels along transmission links in said system, said packet switching point comprising
A method for routing data packets with headers containing routing labels in a packet transmission system having transmission links and packet switching points, said method comprising the steps of
Dependencies are inferred from the claim text.