SDN controller, data center system, and routing connection method

A data center system, comprising:

• an endpoint device manager configured to send a route calculation request to a software defined networking (SDN) controller, wherein the route calculation request carries information about a first endpoint device and a second endpoint device when an existing communication quality between the first endpoint device and the second endpoint device does not meet a presser communication quality requirement;
• and
• the SDN communicatively coupled to the endpoint device manager, wherein the SDN is configured to:
• perform, according to the route calculation request, a route calculation for the first endpoint device and the second endpoint device based on the route calculation request;
• select a route between the first endpoint device and the second endpoint device from a plurality of routes based at least in part on the route calculation and communication quality information, wherein the communication quality information comprises multiple types of quality of service information from at least one of the first endpoint device or the second endpoint device;
• control, according to the selected route, a forwarding device to perform routing connection for the first endpoint device and the second endpoint device;
• and
• receive, using a newly added interface of the endpoint device manager, the route calculation request from the endpoint device manager, wherein the newly added interface uses a representational state transfer (REST) protocol.

A routing connection method, comprising:

• receiving, by a software defined networking (SDN) controller, a route calculation request from an endpoint device manager, wherein the route calculation request carries information about a first endpoint device and a second endpoint device when an existing communication quality between the first endpoint device and the second endpoint device does not meet a presser communication quality requirement;
• performing, by the SDN controller a route calculation for the first endpoint device and the second endpoint device based on the route calculation request;
• selecting, by the SDN controller, a route between the first endpoint device and the second endpoint device from a plurality of routes based at least in part on the route calculation and communication quality information, wherein the communication quality information comprises multiple types of quality of service information from at least one of the first endpoint device or the second endpoint device;
• controlling, by the SDN controller and according to the selected route, a forwarding device to perform routing connection for the first endpoint device and the second endpoint device;
• and
• receiving, by the SDN controller using a newly added interface of the endpoint device manager, the route calculation request from the endpoint device manager, wherein the newly added interface uses a representational state transfer (REST) protocol.