06934249 is referenced by 284 patents and cites 73 patents.

The present invention is directed to a high speed packet switching network and, in particular to a method and system for minimizing the time to establish a connection between an origin and a destination node. Due to high dynamicity of the traffic on transmission links, it is important to select a routing path according to a fully up-to-date information on all network resources. The simpler approach is to calculate a new path for each new connection request. This solution may be very time consuming because there are as many path selection operations as connection set up operations. On another hand, the calculation of paths based on an exhaustive exploration of the network topology, is a complex operation which may also take an inordinate amount of resources in large networks. Many of connections originated from a network node flow to the same destination network node. It is therefore possible to take a serious benefit in reusing the same already calculated paths for several connections towards the same node. The path calculated at the time the connection is requested is recorded in a Routing Database and updated each time a modification occurs in the network. Furthermore, alternate paths for supporting non-disruptive path switch on failure or preemption, and new paths towards potential destination nodes can be calculated and stored when the connection set up process is idle. These last operations are executed in background with a low processing priority and in absence of connection request.

Title
Method and system for minimizing the connection set up time in high speed packet switching networks
Application Number
10/158624
Publication Number
6934249 (B1)
Application Date
May 30, 2002
Publication Date
August 23, 2005
Inventor
Laurent Nicolas
Villeneuve Loubet
FR
Olivier Maurel
Le Cannet
FR
Claude Galand
Cagnes sur Mer
FR
Gerard Brun
Nice
FR
Olivier Bertin
Nice
FR
Agent
Cesari and McKenna
Assignee
Cisco Technology
CA, US
IPC
H04L 012/56
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