Route priority configuration method, device, and controller

A route priority configuration method, the method applied to a network system comprising a controller and at least two devices, the at least two devices are deployed with distributed gateways, the distributed gateways on the at least two devices have a same IP address, and any one of the at least two devices is set to a target device, the method comprising:

• receiving, by the target device, a direct route and a route priority corresponding to the direct route that are sent by the controller, wherein the direct route is generated according to a preset allocation rule and based on the IP address and a subnet mask of a layer 3 interface created on the target device;
• and
• storing, by the target device, the direct route and the route priority corresponding to the direct route, wherein
• the preset allocation rule indicates that a route priority corresponding to a direct route that is based on the IP address and that is of any one of the at least two devices is different from a route priority corresponding to a direct route that is based on the IP address and that is of another device in the at least two devices.

A controller, wherein the controller is applied to a network system, the network system comprising the controller and at least two devices, the at least two devices are deployed with distributed gateways, the distributed gateways on the at least two devices have a same IP address, the controller comprising:

• a memory configured to store a computer program;
• a processor configured to execute the computer program to:
• receive an interface creation request for creating a layer 3 interface on a target device, wherein the interface creation request carries the IP address and a subnet mask configured for the layer 3 interface, and the target device is any one of the at least two devices;
• generate a direct route of the layer 3 interface based on the interface creation request;
• allocate, a route priority to the direct route according to a preset allocation rule;
• and
• send the direct route and the route priority corresponding to the direct route to the target device, wherein
• the preset allocation rule indicates that a route priority corresponding to a direct route that is based on the IP address and that is of any one of the at least two devices is different from a route priority corresponding to a direct route that is based on the IP address and that is of another device in the at least two devices.

A device, wherein the device is a target device in a network system, the network system comprising a controller and at least two devices, the at least two devices are deployed with distributed gateways, the distributed gateways on the at least two devices have a same IP address, the target device is any one of the at least two devices, and the device comprises:

• a memory configured to store a computer program;
• a processor configured to execute the computer program to:
• receive a direct route and a route priority corresponding to the direct route that are sent by the controller, wherein the direct route is generated according to a preset allocation rule and based on the IP address and a subnet mask of a layer 3 interface created on the target device;
• and
• store the direct route and the route priority corresponding to the direct route, wherein
• the preset allocation rule indicates that a route priority corresponding to a direct route that is based on the IP address and that is of any one of the at least two devices is different from a route priority corresponding to a direct route that is based on the IP address and that is of another device in the at least two devices.