Patent ID: 11888960
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. A method, comprising:
receiving, by a second network device, a first packet from a first network device, wherein a control packet header of the first packet comprises a first number, and the first number is a number of the first packet in a process of transmitting the first packet between the first network device and the second network device, wherein the second network device is an intermediate overlay node on a forwarding path between a source edge node and a destination edge node, and wherein each node on the forwarding path updates a value of the first number according to a current number of a packet transmitted between the respective sending node and the respective receiving node; and
sending, by the second network device, a first acknowledgement packet to the first network device, wherein the first acknowledgement packet comprises an indication indicating that the second network device has received the first packet;
wherein the control packet header of the first packet further comprises:
a forwarding path field;
a field indicating a location of the first network device on the forwarding path; and
a tunnel type field; and

wherein packets of different tunnel types correspond to different first number queues, and wherein the first packet further comprises an internet protocol (IP) packet header, the control packet header is an upper-layer packet header of the IP packet header, a source IP address of the IP packet header is an IP address of the first network device, and a destination IP address of the IP packet header is an IP address of the second network device.