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One-hop packet processing in a network with managed switching elements

  • US 9,077,664 B2
  • Filed: 09/06/2011
  • Issued: 07/07/2015
  • Est. Priority Date: 07/06/2010
  • Status: Active Grant
First Claim
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1. For a first managed switching element that implements a logical switching element along with a plurality of additional managed switching elements, a method comprising:

  • receiving a packet for processing through the logical switching element at an ingress port of the first managed switching element that connects to a source of the packet;

    at the first managed switching element, performing a set of ingress context mapping operations to determine a logical context of the received packet;

    at the first managed switching element, performing a set of logical ingress access control list (ACL) operations to determine whether to further process the packet based on the logical context of the packet;

    when the logical ingress ACL operations determine to continue processing the packet, performing a set of logical forwarding operations at the first managed switching element to determine a destination logical port of the logical switching element to which to forward the packet;

    at the first managed switching element, performing a set of logical egress ACL operations to determine whether to further process the packet through the logical switching element based on the destination logical port of the logical switching element;

    when the logical ACL operations determine to continue processing the packet, performing a set of physical forwarding operations to determine a destination physical port of a second managed switching element of the plurality of managed switching elements that corresponds to the destination logical port of the logical switching element; and

    forwarding the packet to the destination physical port of the second managed switching element.

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