Service routing system, device, and method

A service path controller, comprising:

• a receiving unit, a generating unit, a sending unit, and a first interface between the receiving unit and a first service flow classifier;
• wherein the receiving unit is configured to receive a notification message from the first service flow classifier by using the first interface, the notification message comprises service flow category information corresponding to a service flow, the service flow category information is used to indicate a first service chain corresponding to the service flow, and the first service chain comprises one or more service enablers that are arranged according to a first sequence;
• wherein the generating unit is configured to generate, according to the notification message, a first forwarding entry corresponding to each of one or more programmable switches;
• and
• wherein the sending unit is configured to send the first forwarding entry corresponding to each programmable switch to the one or more programmable switches, so that the one or more the programmable switch forwards a data packet of the service flow according to the first forwarding entry corresponding to the programmable switch, and the one or more service enablers process the data packet of the service flow according to the first sequence.

A service flow classifier, comprising:

• a generating unit, a sending unit, and a first interface between the sending unit and a service path controller;
• wherein the generating unit is configured to generate a notification message according to a service flow, the notification message comprises service flow category information corresponding to the service flow, the service flow category information is used to indicate a first service chain corresponding to the service flow, and the first service chain comprises one or more service enablers that are arranged according to a first sequence;
• and
• wherein the sending unit is configured to send the notification message to the service path controller by using the first interface.

A service routing method, comprising:

• receiving a notification message from a first service flow classifier, wherein the notification message comprises service flow category information corresponding to a service flow, the service flow category information is used to indicate a first service chain corresponding to the service flow, and the first service chain comprises one or more service enablers that are arranged according to a first sequence;
• generating, according to the notification message, a forwarding entry corresponding to each of one or more programmable switches;
• and
• sending the first forwarding entry corresponding to each programmable switch to the one or more programmable switches, so that the programmable switch forwards a data packet of the service flow according to the first forwarding entry corresponding to the programmable switch, and the one or more service enablers process the data packet of the service flow according to the first sequence.