Method to enhance routing control in PNNI networks

Details Method to enhance routing control in PNNI networks Method to enhance routing control in PNNI networks

2002-06-24

2008-12-30

Jung, Min (Department: 2616)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S396000

Reexamination Certificate

active

07471680

ABSTRACT:
An embodiment of the invention provides a method for specifying preferred routes for SPVCs across multi-peer group PNNI networks and AINI links. A preferred route for a network connection through a network having a plurality of nodes, organized hierarchically into a plurality of peer groups, is determined. The preferred route is associated with a preferred route identifier. The preferred route identifier is carried in the PNNI SETUP message and is used to link a preferred route database in the source node with the entry border nodes of remote peer groups for a single SPVC. The entry border node of each peer group establishes a connection over a static route corresponding to the preferred route identifier. For one embodiment the preferred route identifier is carried in a generic application transport information element of the PNNI signaling SETUP message, providing a scalable preferred routing capability for SPVCs across multi-peer group PNNI networks.

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