Method of neighbor discovery over a multiaccess nonbroadcast med

Details Method of neighbor discovery over a multiaccess nonbroadcast med Method of neighbor discovery over a multiaccess nonbroadcast med

1993-03-11

1996-11-12

Hayes, Gail O.

Multiplex communications

Wide area network

Packet switching

39520002, 39520003, 3952001, 39520011, 39520015, 370 941, 370 16, 34082502, 3408253, 34082531, 3408255, 34082551, 34082552, 34082553, 380 73, 380 29, H04B 300, H04J 1300, H04J 300

Patent

active

055748600

ABSTRACT:
A technique for generating, distributing and maintaining a list of operational nodes in a network using a nonbroadcast communication medium, wherein the nodes first collectively agree on the identity of a designated node. Once the designated node is agreed on, the other nodes periodically send Hello messages to it and the designated nodes compiles a list of operational nodes based in part on the Hello messages it receives, and periodically sends a Hello message to each node on the list. The Hello message from the designated node includes a list of addresses of active neighbor nodes, so that every node periodically receives a list of operational neighbor nodes. The number of messages needed to implement this scheme is proportional to the number of nodes, rather than the square of the number of nodes as in a conventional approach in which each node advised every other node of its presence. Selection of the designated node can be on the basis of some unique property of each node, such as identification number or an encoded priority.

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