Packet processing system

A method of processing a packet between a forwarding device and a control device, the forwarding device transmitting and receiving the packet through a network interface, the control device responding to the packet using an application, the method comprising:

• associating a symbol section with address information of the forwarding device;
• transmitting from the control device to the forwarding device a setting request that the forwarding device sets a packet transfer rule that is used to transfer the packet received to the control device, when the control device detects that the application accesses the symbol section;
• setting the packet transfer rule in the control device;
• and
• setting the packet transfer rule in response to the setting request in the forwarding device.

A computer program product for processing a packet between a forwarding device and a control device, the forwarding device transmitting and receiving the packet through a network interface, a control device responding to the packet using an application, the computer program product including computer executable instructions stored on a computer readable medium, wherein the instructions, when executed by the computer, cause the computer to perform:

• associating a symbol section with address information of the forwarding device;
• transmitting from the control device to the forwarding device a setting request that the forwarding device sets a packet transfer rule that is used to transfer the packet received to the control device, when the control device detects that the application accesses the symbol section;
• setting the packet transfer rule in the control device;
• and
• setting the packet transfer rule in response to the setting request in the forwarding device.

A packet processing system which performs communication with a network node through a network interface of a forwarding device, wherein

• the network interface of the forwarding device and an application on a control device are connected to each other by an internal communication path,
• the control device includes
• a symbol setting unit that sets a symbol section that communicates with the application on the control device and associates it with an interface of the forwarding device;
• a first downstream path generation unit that receives from the forwarding device a downstream internal communication path identifier of a downstream internal communication path on which data is transferred in a direction from the symbol section to the interface of the forwarding device, and that generates a first downstream path table where the downstream internal path identifier is associated with the symbol section and an address of the forwarding device;
• a first upstream path generation unit that receives a start message that the application starts communicating with the symbol section, that transmits an input-output port identifier of the process and an upstream internal communication path identifier to the forwarding device, and that generates a first upstream path table where the upstream internal path identifier is associated with the symbol section and the input-output port identifier, and
• the forwarding device includes
• a second downstream path generation unit that generates a second downstream path table where the downstream internal path identifier is associated with the interface of the forwarding device;
• and
• a second upstream path generation unit that generates a second upstream path table where the input-output port identifier of the process, the upstream internal communication path identifier, and the interface are associated with each other.

A method of processing a packet in communication with a network node through a network interface of a forwarding device, wherein the network interface of the forwarding device and an application on a control device are connected to each other by an internal communication path, the method comprising:

• setting a symbol section that communicates with the application on the control device and associates it with an interface of the forwarding device;
• receiving from the forwarding device a downstream internal communication path identifier of a downstream internal communication path on which data is transferred in a direction from the symbol section to the interface of the forwarding device, in the control device;
• generating a first downstream path table where the downstream internal path identifier is associated with the symbol section and an address of the forwarding device;
• receiving a start message that the application starts communicating with the symbol section, in the control device;
• transmitting from the control device to the forwarding device an input-output port identifier of the application and an upstream internal communication path identifier;
• generating a first upstream path table where the upstream internal path identifier is associated with the symbol section and the input-output port identifier;
• generating a second downstream path table where the downstream internal path identifier is associated with the interface of the forwarding device;
• and
• generating a second upstream path table where the input-output port identifier of the application, the upstream internal communication path identifier, and the interface are associated with each other.

A computer program product for processing a packet in communication with a network node through a network interface of a forwarding device, wherein the network interface of the forwarding device and an application on a control device are connected to each other by an internal communication path, the computer program product including computer executable instructions stored on a computer readable medium, wherein the instructions, when executed by the computer, cause the computer to perform:

• setting a symbol section that communicates with the application on the control device and associates it with an interface of the forwarding device;
• receiving from the forwarding device a downstream internal communication path identifier of a downstream internal communication path on which data is transferred in a direction from the symbol section to the interface of the forwarding device, in the control device;
• generating a first downstream path table where the downstream internal path identifier is associated with the symbol section and an address of the forwarding device;
• receiving a start message that the application starts communicating with the symbol section, in the control device;
• transmitting from the control device to the forwarding device an input-output port identifier of the application and an upstream internal communication path identifier;
• generating a first upstream path table where the upstream internal path identifier is associated with the symbol section and the input-output port identifier;
• generating a second downstream path table where the downstream internal path identifier is associated with the interface of the forwarding device;
• and
• generating a second upstream path table where the input-output port identifier of the application, the upstream internal communication path identifier, and the interface are associated with each other.