Multiplex communications – Wide area network – Packet switching
Patent
1992-06-19
1993-11-16
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 941, 370 943, H04Q 1100
Patent
active
052629066
ABSTRACT:
A routing method, performed by intelligent network elements of a data communications network having SONET applications, for selecting a path from a source network element to a next network element. Each network element has access to a database containing the addresses of its neighboring network elements and their types. To select a next network element, a routing network element first attempts to find a neighboring network element that is the same as the destination network element. If it has no such neighbor, the routing network element then attempts to find a neighbor that is in the same area as the destination, or failing such a neighbor, in the same routing domain. Optionally, the routing network element looks for a neighbor that has been selectively provisioned as a next network element. At each step, candidate network elements are eliminated by using data about their type and application to determine if they call for duplicate paths.
REFERENCES:
patent: 4866668 (1989-09-01), Edmonds et al.
patent: 5103447 (1992-04-01), Takiyasu et al.
patent: 5134614 (1992-07-01), Baydar et al.
patent: 5138615 (1992-08-01), Lamport et al.
patent: 5142529 (1992-08-01), Parruck et al.
Alcatel Network Systems, Inc.
Kraft Dennis O.
Lutz Bruce C.
Olms Douglas W.
Patel Ajit
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