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Source alive route injection

  • US 9,019,815 B2
  • Filed: 08/01/2011
  • Issued: 04/28/2015
  • Est. Priority Date: 08/01/2011
  • Status: Active Grant
First Claim
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1. A method comprising:

  • monitoring whether datastream packets are received from a first redundant source, whereinthe monitoring is performed by a head-end router, andthe head-end router is connected to the first redundant source and coupled to a network; and

    advertising a first route to the network, in response to receipt of the datastream packets from the first redundant source, whereinthe advertising is performed by the head-end router,the receipt of the datastream packets is an indication that the first redundant source is active, andthe first redundant source is reachable by the first route;

    receiving an advertisement for a second route to a second redundant source, wherein the first and second redundant sources share a common address but distinct prefix lengths;

    updating a routing table with the first and the second routes; and

    selecting a best route, wherein the best route is selected from the routing table according to a selection policy.

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