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Virtual router migration

  • US 20110134931A1
  • Filed: 12/08/2009
  • Published: 06/09/2011
  • Est. Priority Date: 12/08/2009
  • Status: Abandoned Application
First Claim
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1. A method for a packet-aware transport network to allow a Virtual Router (VR) to migrate from a source router to a destination router comprising:

  • prior to migrating a VR, searching for a destination router that does not increase path stretch and is in accordance with physical constraints;

    receiving a migrate order at a source router and at a destination router from a Network Management System (NMS) to migrate a VR;

    establishing temporary tunnels between the source router and destination router;

    copying the VR'"'"'s configuration files at the source router to the file system at the destination router;

    cloning the data plane for the migrated VR at the destination router;

    redirecting all routing messages destined to the VR at the source router to the destination router;

    migrating each link to and from the source router to the destination router, migrating each link independently of the others; and

    after all links are migrated to the destination router, removing the VR data plane at the source router and the temporary tunnels.

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