Method for Making Host Network Performance Requirement Programmable, Device, and System

A network device comprising:

• at least one processor;
• and
• one or more memories coupled to the at least one processor and configured to store programming instructions, wherein the at least one processor is configured to execute the programming instructions to cause the network device to:
• receive, from a host, a first service packet comprising a segment identifier (SID), wherein the SID comprises a first identifier that indicates a network performance requirement of the first service packet;
• add a segment list to the first service packet based on an element to obtain a second service packet, and wherein the element comprises the first identifier;
• and
• forward the second service packet through a forwarding path that corresponds to the segment list and meets the network performance requirement.