Service Routing Packet Processing Method and Apparatus, and Network System

A service routing packet processing method, comprising:

• receiving, by a service node (SN), a second service routing packet sent by a first service router (SR);
• performing, by the SN, service processing on the second service routing packet, to obtain a third service routing packet;
• generating, by the SN, a fourth service routing packet according to the third service routing packet;
• and
• sending, by the SN, the fourth service routing packet to the first SR.

A service router (SR), comprising:

• a receiver configured to receive a first service routing packet;
• a memory storing instructions;
• and
• a processor coupled to the receiver and the memory, the processor configured to execute the instructions to:
• query a service routing table according to path identification information and identification information of a source service node (SN) that are carried in the first service routing packet, to determine identification information of a destination SN, wherein the service routing table comprises a correspondence between the path identification information, the identification information of the source SN, and the identification information of the destination SN;
• and
• generate a second service routing packet according to the identification information of the destination SN and the first service routing packet;
• and
• a transmitter coupled to the processor configured to send the second service routing packet.

A service node (SN), comprising:

• a receiver configured to receive a second service routing packet sent by a first service router (SR);
• a memory storing instructions;
• and
• a processor coupled to the receiver and the memory, the processor configured to execute the instructions to:
• perform service processing on the second service routing packet, to obtain a third service routing packet;
• and
• generate a fourth service routing packet according to the third service routing packet;
• and
• a transmitter configured to send the fourth service routing packet to the first SR.