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System and method for managing unknown flows in a flow-based switching device

  • US 9,559,948 B2
  • Filed: 08/28/2012
  • Issued: 01/31/2017
  • Est. Priority Date: 02/29/2012
  • Status: Active Grant
First Claim
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1. A network switching device comprising:

  • a macroflow sub-plane that performs packet-based routing in the network switching device;

    an expansion slot;

    a first microflow routing module that performs flow-based routing in the network switching device, the first microflow routing module being installed into the expansion slot and separable from the network switching device, and being operable to;

    receive from the macroflow sub-plane a first data packet, wherein the first data packet is associated with a first unknown flow on the network switching device;

    receive via a first OpenFlow software defined network (SDN) agent a first flow-based routing rule from a SDN controller; and

    route the first data packet based upon the first flow-based routing rule; and

    a second microflow routing module that performs flow-based routing in the network switching device, the second microflow routing module to;

    receive via a second SDN agent a second flow-based routing rule from the SDN controller;

    receive from the macroflow sub-plane a second data packet; and

    route the second data packet based upon the second flow-based routing rule.

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