Label switch network system

Details Label switch network system Label switch network system

2006-04-25

2006-04-25

Nguyen, Brian (Department: 2661)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S254000, C370S401000

Reexamination Certificate

active

07035259

ABSTRACT:
The present invention relates to label switch networks and allows for reducing the processing cost and processing time required at each node when various services are performed with respect to traffic engineering in the label switch networks including a multi-protocol label switching (MPLS) network. In a label switch network system a first node that is disposed at the ingress of the label switch network transfers IP packets corresponding to IP flows based on labels, and that selects and sets up layer2paths for transferring the IP packets with reference to header or payload information of the IP packets. A plurality of second nodes may be disposed at intermediate points of the network and they set up the layer2paths from the ingress to the egress of the network following the specified routes and a third node is disposed at the egress of the network. A policy server instructs the first node to set up the layer2paths in compliance with policy control protocols when a user makes a request or a status change in the network arise, and intensively controls the first node, the second nodes and the third node.

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Notification of Reason for Rejection dated Sep. 6, 2005 with translation.
Norihito Fujita, et al. Implementation of MPLS based IP-Qos Traffic Engineering System. Technical Report of the Institute of Electrics, Information and Communication Engineers. Oct. 28, 1999 vol. 99, No. 404, with partial translation.

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