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REDUCED TRAFFIC LOSS FOR BORDER GATEWAY PROTOCOL SESSIONS IN MULTI-HOMED NETWORK CONNECTIONS

  • US 20130259058A1
  • Filed: 03/31/2012
  • Published: 10/03/2013
  • Est. Priority Date: 03/31/2012
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving, with a primary router, advertised routes from a multi-homed router via a Border Gateway Protocol (BGP) session, wherein the multi-homed router is connected to the primary router and a backup router;

    updating, in a control plane of the primary router, routing information in a routing table based on the received routes;

    installing, in a forwarding plane of the primary router, forwarding data structures for the received routes in forwarding tables based on the routing information; and

    deferring re-advertisement of the routes to BGP peer routers until the control plane receives an acknowledgement from the forwarding plane indicating that a last route received from the multi-homed router is installed in the forwarding tables of the forwarding plane.

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