Search International and National Patent Collections

1. (WO2018036254) PACKET FORWARDING METHOD AND DEVICE

Pub. No.:    WO/2018/036254    International Application No.:    PCT/CN2017/089465
Publication Date: Fri Mar 02 00:59:59 CET 2018 International Filing Date: Fri Jun 23 01:59:59 CEST 2017
IPC: H04L 12/707
H04L 12/725
H04L 12/751
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
华为技术有限公司
Inventors: XU, Xiaoyang
徐晓旸
Title: PACKET FORWARDING METHOD AND DEVICE
Abstract:
The disclosure relates to a packet forwarding method and device. The method comprises: receiving a service packet, and determining a predetermined packet characteristic of the service packet; acquiring a forwarding parameter corresponding to the predetermined packet characteristic; encapsulating the service packet in a service link packet carrying the forwarding parameter; determining, according to the forwarding parameter, a device identifier of a service function forwarder of a next hop in a forwarding path; and sending the service link packet to the service function forwarder corresponding to the device identifier. The present invention encapsulates a service packet in a service link packet carrying a forwarding parameter, so as to enable a service function forwarder of a next hop to continue transmitting the service link packet according to the forwarding parameter. Further, the forwarding parameter is encapsulated in the service link packet such that the forwarding parameter is not changed due to the presence of a device that modifies packets in a forwarding path, ensuring the consistency of a forward path and a backward path for transmitting the service link packet, as well as the consistency of the forwarding parameter in the forward path and the backward path.