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Last-hop processing for reverse direction packets

  • US 9,602,404 B2
  • Filed: 11/20/2015
  • Issued: 03/21/2017
  • Est. Priority Date: 08/17/2011
  • Status: Active Grant
First Claim
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1. For a first managed forwarding element, a method comprising:

  • receiving a first packet from a second managed forwarding element via a tunnel between the first and second managed forwarding elements, the first packet comprising context information that identifies (i) that first-hop logical processing was performed by the second managed forwarding element to process the first packet through a set of logical forwarding elements of a logical network implemented by the first and second managed forwarding elements and (ii) that a first machine connected to the first managed forwarding element is a destination for the first packet;

    based on the context information in the first packet, generating forwarding data for processing subsequent packets received from the first machine and having a particular destination address that corresponds to a source address of the first packet; and

    using the generated forwarding data to forward a second packet, received from the first machine and having the particular destination address, to the second managed forwarding element via the tunnel without performing first-hop logical processing to process the second packet through the set of logical forwarding elements of the logical network, wherein the second managed forwarding element performs said logical processing upon receiving the second packet via the tunnel.

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