公开(公告)号：US20190037033A1

公开(公告)日：2019-01-31

申请号：US15661445

申请日：2017-07-27

Applicant: Cisco Technology, Inc.

Inventor： Elyor Khakimov ,  Shyam Kapadia ,  Richard Lam

IPC: H04L29/08 ,  H04L12/813 ,  H04L12/44 ,  H04L12/803

Abstract: A network controller for a network implementing a virtual network overlay determines a network gateway via which a service appliance accesses the network. The network controller determines a network gateway via which an application server accesses the network. The network controller distributes first policy data to the network gateway via which the service appliance accesses the network. This first policy data indicates a network policy such that when the policy is executed, the network gateway via which the service appliance accesses the network is configured to forward return packets addressed to a client device sent from an application server to the service appliance. The network controller distributes second policy data to the network gateway via which the application server accesses the network. This second policy data indicates a network policy such that when the policy is executed, the network gateway via which the application server accesses the network is configured to forward return packets addressed to the client device sent from the application server to the network gateway via which the service appliance accesses the network.