PACKET TRANSMISSION METHOD AND DEVICE, AND COMMUNICATIONS SYSTEM

摘要

The present invention discloses a packet transmission method, which relate to the communications field and can increase, in an environment of a mobile core network in which a forwarding plane is separated from a control plane, a success rate of packet transmission from the mobile core network to an external network. The method includes: determining an external gateway to which a data packet needs to be sent; obtaining a MAC address of the external gateway by using a forwarding plane apparatus; and sending a processing rule to the forwarding plane apparatus, so that the forwarding plane apparatus processes the data packet according to the processing rule, where the processing rule includes the MAC address and is used for instructing to send the data packet to the external gateway, and the external gateway is located in an external network connected to a core network.

主权项

1. A communications system, comprising a forwarding plane apparatus and a gateway control plane apparatus that are located in a core network, wherein:
the gateway control plane apparatus is configured to determine an external gateway to which a data packet needs to be sent, obtain a MAC address of the external gateway by using the forwarding plane apparatus, and send a processing rule to the forwarding plane apparatus, wherein the processing rule comprises the MAC address and is used for instructing to send the data packet to the external gateway, and the external gateway is located in an external network connected to the core network; and the forwarding plane apparatus is configured to obtain the MAC address of the external gateway for the gateway control plane apparatus and process the data packet according to the processing rule.