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Expired Canadian patentCanada

Dynamic forwarding adjacency

CA 2572980 C · Owner: Vasseur, Jean Philippe · Inventors: Ward, David D.; Vasseur, Jean Philippe; Previdi, Stefano B.

CIPO record

Overview

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Abstract From the Canadian patent

A technique treats a protected forwarding adjacency (FA) as a dynamic entity in that it allows a backup tunnel associated with the FA to carry traffic for the FA, when it's primary tunnel has failed up to a predetermined amount of , time. If after the predetermined amount of time has elapsed and the FA has not recovered (e.g. the primary tunnel has not been reestablished) a network , topology change is automatically triggered causing the network to converge on a new network topology. By triggering the network topology change a path that , is more optimal than the path associated with the backup tunnel may be subsequently determined to carry the traffic.

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed July 14, 2005 and granted April 17, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 14, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 14, 2005
GrantedApril 17, 2012
Term endedJuly 14, 2025
Patent numberCA 2572980 C
Classification (IPC)H04L45/02 +2 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedJuly 14, 2005Patent grantedApril 17, 2012Term endedJuly 14, 2025

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.