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

摘要

Methods and apparatuses for automating return traffic redirection to a service appliance by injecting forwarding policies in a packet-forwarding element are disclosed herein. An example method for automating return traffic redirection can include: establishing a communication channel between a service appliance and a packet-forwarding element; and transmitting an out-of-band message over the communication channel to the packet-forwarding element. The message can include a forwarding policy that requests the packet-forwarding element to forward predetermined packets to the service appliance.

主权项

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.