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    • 7. 发明公开
    • PACKET TRANSMISSION METHOD, COMMUNICATION DEVICE, AND SYSTEM
    • EP3813318A1
    • 2021-04-28
    • EP19806754.8
    • 2019-05-24
    • HUAWEI TECHNOLOGIES CO., LTD.
    • REN, ShoushouYU, Delei
    • H04L29/06
    • Embodiments of this application provide a packet transmission method, and a communications apparatus and system. The method includes: generating a packet based on address information of forwarding nodes on a packet forwarding path, where the packet includes a first indication field, the first indication field is used to indicate a compressed first element and a compressed second element, the first element and the second element are address information of different forwarding nodes, and different address compression manners are used for the first element and the second element; and sending the packet. According to the packet transmission method, and the communications apparatus and system provided in the embodiments of this application, when an IP source routing technology is used to guide the forwarding nodes on the packet forwarding path in packet forwarding, address information of different forwarding nodes is compressed in different address compression manners, so as to increase an amount of address information of forwarding nodes that is indicated by the packet. This can increase a quantity of forwarding nodes that can be specified by using the packet, thereby reducing difficulty in network deployment.