Method and apparatus for updating label-switched paths

Multiplex communications – Low speed asynchronous data system – Data switching exchange

Reexamination Certificate

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C370S254000, C370S238000, C370S217000, C370S221000, C709S220000, C709S242000, C714S001000, C714S002000, C714S018000, C714S025000

Reexamination Certificate

active

07835312

ABSTRACT:
A method of updating a label-switched path for forwarding data in a data communications network in response to a change in a network comprises the step, performed at an updating node of receiving notification of a network change, of constructing a post-change label-switched path in the changed network. The method further comprises, after termination of a first period, forwarding data using the post-change label-switched path.

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