US 7,580,370 B2
Method and structure for autoconfiguration of network destinations
Richard H. Boivie, Monroe, Conn. (US); and Nancy K. Feldman, New City, N.Y. (US)
Assigned to International Business Machines Corporation, Armonk, N.Y. (US)
Filed on Jun. 21, 2002, as Appl. No. 10/176,045.
Prior Publication US 2003/0235155 A1, Dec. 25, 2003
Int. Cl. H04L 12/28 (2006.01)
U.S. Cl. 370—255  [370/254; 370/401] 13 Claims
OG exemplary drawing
 
1. A method of determining an optimal subnet data-packet-routing in an overlay network comprising a plurality of routers interrelated by a defined neighborhood relationship, by automatically determining an optimal router from said plurality of routers to serve as a local router that will communicate directly to said subnet, said method comprising:
responsive to learning of a presence of a subnet not previously recognized by said overlay network, determining a distance between said subnet and each router in said plurality of routers; and
determining a router having a smallest distance to said subnet to serve as the local router for said subnet for purpose of said overlay network.