Service processing method and network device

A service processing method implemented by a first network device, wherein the service processing method comprises:

• sending, to a second network device, a first message for establishing a first connection to the second network device when the second network device is needed to assist the first network device in obtaining information related to computing a forwarding path of a packet, wherein the packet belongs to a service, and wherein the second network device on the forwarding path of the packet is associated with a service requirement of the service;
• and
• sending, to the second network device, a second message using the first connection,
• wherein the second message requests the second network device to assist in obtaining the information related to the forwarding path,
• wherein the forwarding path is based on the service requirement,
• wherein the second network device, based on the forwarding path of the packet, is a stitching node for allocating a stitching label,
• wherein the second message comprises label stack information, and
• wherein the second message instructs the second network device to allocate the stitching label corresponding to the label stack information.

A computer program product comprising computer-executable instructions stored on a non-transitory computer-readable storage medium that when executed by one or more processors, cause a first network device to:

• send, to a second network device, a first message for establishing a first connection to the second network device when the second network device is needed to assist the first network device in obtaining information related to computing a forwarding path of a packet, wherein the packet belongs to a service, and wherein the second network device on the forwarding path of the packet is associated with a service requirement of the service;
• and
• send, to the second network device, a second message using the first connection,
• wherein the second message requests the second network device to assist in obtaining the information related to the forwarding path,
• wherein the forwarding path is based on the service requirement,
• wherein the second network device, based on the forwarding path of the packet, is a stitching node for allocating a stitching label,
• wherein the second message comprises label stack information, and
• wherein the second message instructs the second network device to allocate the stitching label corresponding to the label stack information.