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Service node selection by an inline service switch

  • US 10,225,137 B2
  • Filed: 08/31/2015
  • Issued: 03/05/2019
  • Est. Priority Date: 09/30/2014
  • Status: Active Grant
First Claim
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1. A non-transitory machine readable medium storing a program for sending data messages originating at a source compute node (SCN) to a group of service nodes (SNs), the SCN and the program for execution by at least one processor of a host computer, the program comprising sets of instructions for:

  • on the egress datapath of the SCN along which data messages originating at the SCN are sent out of the host computer, identifying a data message originating at and transmitted by the SCN and determining whether a service action has to be performed on the data message;

    when a service action has to be performed on the data message, identifying a particular SN in the SN group that should receive the data message, said SN group comprising a plurality of SNs for performing the same service action and connected to the host computer by a tunnel;

    from a plurality of tunnels between the host computer and the plurality of SNs, identifying a tunnel connecting the host computer to the identified particular SN; and

    sending the data message to the particular SN along the identified tunnel that connects the host computer with the particular SN.

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