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Managing routing information for tunnel endpoints in overlay networks

  • US 9,686,180 B2
  • Filed: 09/04/2014
  • Issued: 06/20/2017
  • Est. Priority Date: 11/05/2013
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving, at a first tunnel endpoint in an overlay network, an encapsulated packet from a second tunnel endpoint, the encapsulated packet having been encapsulated at the second tunnel endpoint based on a packet originating from a source host associated with the second tunnel endpoint, wherein the encapsulated packet comprises a source host address for the source host and a source tunnel endpoint address for the second tunnel endpoint; and

    updating a lookup table at the first tunnel endpoint based on an association between the source host address and the source tunnel endpoint address, wherein updating the lookup table further comprises;

    determining whether an entry for the source host address exists in the lookup table, andwhen the entry for the source host address exists in the lookup table and the source host address is associated with a tunnel endpoint address different from the source tunnel endpoint address in the lookup table, updating the entry for the source host address in the lookup table based on the association between the source host address and the source tunnel endpoint address.

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