Method for controlling routing in a packet network supported...

Details Method for controlling routing in a packet network supported... Method for controlling routing in a packet network supported...

2011-07-12

2011-07-12

Shah, Chirag G (Department: 2477)

Multiplex communications

Pathfinding or routing

Combined circuit switching and packet switching

C370S401000

Reexamination Certificate

active

07978687

ABSTRACT:
A method of controlling routing in a packet network supported by a transport network allowing the dynamic creation/suppression of links for transporting packets of said packet network, said method including a routing step, a step of informing other routers of said network of the metric assigned to each link of the packet network, and a step of creating/destroying a link. The link may have three states: a non-connected state if said two routers cannot be directly connected, a virtual connection state wherein a virtual metric is assigned to said link between said head end router and said tail end router of the same communication, and a real connection state wherein a real metric is normally assigned to said link.

REFERENCES:
patent: 5854899 (1998-12-01), Callon et al.
patent: 6275470 (2001-08-01), Ricciulli
patent: WO 03/019870 (2003-03-01), None
patent: WO 2004/034653 (2004-04-01), None
Guerin et al., “QoS routing mechanisms and OSPF extensions”, Global Telecommunications Conference, 1997. Globecom '97, vol. 3, Nov. 3-8, 1997.
Lee, “Topology Aggregation for Hierarchical Routing in ATM Networks” Computer Communication Review, Association for Computing Machinery, vol. 25, No. 2, pp. 82-92, Apr. 1, 1995.

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