Data packet processing method, apparatus, and system in software defined network SDN

A switching device in a software defined network (SDN), comprising:

• a network interface;
• and
• a processor coupled to the network interface and configured to:
• establish a first control channel with a first control device;
• establish a second control channel with a second control device;
• receive a first flow entry and a second flow entry, wherein the first flow entry comprises a first match field and a first identifier of the first control channel, wherein the second flow entry comprises a second match field and a second identifier of the second control channel, wherein the first identifier is different from the second identifier, and wherein the first match field is different from the second match field;
• receive a first data packet;
• send the first data packet to the first control device through the first control channel represented by the first identifier in response to the first data packet matching the first match field;
• receive a second data packet;
• and
• send the second data packet to the second control device through the second control channel represented by the second identifier in response to the second data packet matching the second match field.