Method and device for transmitting forwarding parameter

A method for transmitting a forwarding parameter, applied to a network for which control and forwarding are separated, wherein the network comprises a controller and a forwarding device, the forwarding device is controlled by the controller, and the method comprises:

• obtaining, by the forwarding device, an extended forwarding model description, wherein the extended forwarding model description comprises a first format encoding rule for indicating a type of a first forwarding parameter and a location of the first forwarding parameter in a first field, wherein the first field is an OpenFlow protocol flow entry field;
• and
• receiving, by the forwarding device, from the controller, the flow entry that carries the first field, and parsing the first field according to the first format encoding rule to obtain the first forwarding parameter.

A controller for controlling a forwarding device, wherein control and forwarding are separated for a network comprising the controller and the forwarding device, and wherein the controller comprises a processor and a non-transitory computer-readable medium having processor-executable instructions stored thereon, the processor-executable instructions, when executed by the processor, facilitating the following:

• obtaining an extended forwarding model description, wherein the extended forwarding model description comprises a first format encoding rule for indicating a type of a first forwarding parameter and a location of the first forwarding parameter in a first field, wherein the first field is an OpenFlow protocol flow entry field;
• and
• filing the first forwarding parameter in the first field according to the first format encoding rule, and sending to the forwarding device by using the OpenFlow protocol, the flow entry that carries the first field to facilitate the forwarding device parsing the first field according to the first format encoding rule to obtain the first forwarding parameter.

A forwarding device by a controller, wherein control and forwarding are separated for a network comprising the controller and the forwarding device, and wherein the forwarding device comprises a processor and a non-transitory computer-readable medium having processor-executable instructions stored thereon, the processor-executable instructions, when executed by the processor, facilitating the following:

• obtaining an extended forwarding model description, wherein the extended forwarding model description comprises a first format encoding rule for indicating a type of a first forwarding parameter and a location of the first forwarding parameter in a first field, wherein the first field is an OpenFlow protocol flow entry field;
• and
• receiving, from the controller, the flow entry that carries the first field, and parsing the first field according to the first format encoding rule to obtain the first forwarding parameter.