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Methods and apparatuses for automating return traffic redirection to a service appliance by injecting traffic interception/redirection rules into network nodes

  • US 8,837,486 B2
  • Filed: 07/25/2012
  • Issued: 09/16/2014
  • Est. Priority Date: 07/25/2012
  • Status: Active Grant
First Claim
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1. A method for automating return traffic redirection, the method comprising:

  • at a service appliance, establishing a communication channel between the service appliance and a packet-forwarding element;

    at the service appliance, transmitting an out-of-band message over the communication channel to the packet-forwarding element, the message comprising a forwarding policy that requests the packet-forwarding element to forward predetermined packets to the service appliance;

    at the service appliance, receiving a packet having a source address of a client device and a destination address of the service appliance;

    at the service appliance, performing a load balancing algorithm to select a server among one or more servers;

    at the service appliance, changing the destination address of the packet to an address of the selected server; and

    at the service appliance, forwarding the packet having the source address of the client device and the destination address of the selected server.

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