Method and apparatus for communications traffic engineering

Details Method and apparatus for communications traffic engineering Method and apparatus for communications traffic engineering

2007-06-12

2007-06-12

Patel, Ajit (Department: 2664)

Multiplex communications

Data flow congestion prevention or control

Flow control of data transmission through a network

C379S221030, C709S242000

Reexamination Certificate

active

09819555

ABSTRACT:
This invention provides for a technique for selectively off-loading traffic from congested sub-regions of a network to more lightly-loaded regions by making use of Multiprotocol Label Switching (MPLS). For each network element, an Interior Gateway Protocol (IGP) routing is employed to provide re-routing and to identify congested links caused by re-routed trunks for each single failure. The re-routed traffic is then analyzed and alternate Label Switched Paths (LSPs) are identified for such traffic trunks so that the traffic is directed to the alternate LSPs during the single failure event.

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D. Awduche et al., “Requirements for Traffic Engineering Over MPLS”, Sep. 1999, pp. 1-30, Network Working Group, IETF Standard, Internet Engineering Task Force.

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