Method, device, and system for performing balance adjustment on egress traffic of sdn based idc network

A method for performing balance adjustment on egress traffic of a software-defined networking (SDN)-based Internet data center (IDC) network, wherein the IDC network comprises:

• a data center provider edge (DPE), a traffic analysis device and an SDN controller that are connected to the DPE, a policy management device connected to the traffic analysis device and the SDN controller, wherein the DPE is connected to multiple core network provider edges (CPEs) in a public network by using multiple egress links, the method comprising:
• receiving, by the SDN controller, group information of at least one autonomous system AS group sent by the policy management device, wherein each AS group in the at least one AS group comprises one or more ASs;
• generating an AS filtering policy according to the group information and delivering the AS filtering policy to the DPE for collecting statistics to obtain AS traffic information, wherein the AS traffic information comprises:
• information about traffic of an AS group that flows through the multiple egress links from the DPE to the multiple CPEs;
• receiving a traffic adjustment policy sent by the policy management device, wherein the traffic adjustment policy is generated by the policy management device after the policy management device obtains the AS traffic information by using the traffic analysis device, for instructing to adjust traffic of at least one destination AS group in the at least one AS group to at least one destination egress link in the multiple egress links;
• and
• controlling, according to the traffic adjustment policy, the DPE to adjust egress traffic.

A policy management device, used in a software-defined networking (SDN)-based Internet data center (IDC) network, the policy management device comprising:

• a processor;
• a non-transitory computer-readable storage medium storing a program to be executed by the processor, the program including instructions which, when executed by the processor, cause the policy management device to:
• send group information of at least one autonomous system (AS) group to an SDN controller for generating an AS filtering policy for delivery to a data center provider edge (DPE), wherein each AS group in the at least one AS group comprises one or more ASs,
• obtain, by using the traffic analysis device, AS traffic information that is obtained by the DPE through statistics collection according to the AS filtering policy, wherein the AS traffic information comprises:
• information about traffic of an AS group that flows through multiple egress links from the DPE to the multiple core network provider edges (CPEs),
• generate a traffic adjustment policy according to the AS traffic information for instructing to adjust traffic of at least one destination AS group in the at least one AS group to at least one destination egress link in the multiple egress links, and
• send the traffic adjustment policy to the SDN controller for controlling the DPE to adjust egress traffic.