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|1. (WO2017197885) COMMUNICATION METHOD AND DEVICE FOR USE IN VIRTUAL EXTENSIBLE LOCAL AREA NETWORK|
|Applicants:||HUAWEI TECHNOLOGIES CO., LTD.
|Title:||COMMUNICATION METHOD AND DEVICE FOR USE IN VIRTUAL EXTENSIBLE LOCAL AREA NETWORK|
Provided in embodiments of the present invention are a communication method and device for use in a VXLAN. A datacenter of the VXLAN comprises a first layer 3 gateway device and a second layer 3 gateway device. The method comprises: the first layer 3 gateway device receives host routing information transmitted by the second layer 3 gateway device, the host routing information comprising an internet protocol (IP) address of the first host, a media access control (MAC) address of the first host, and a VTEP identity of a next hop for the first layer 3 gateway device to transmit information to the first host; and the first layer 3 gateway device executes, on the basis of the host routing information, traffic packet forwarding or address resolution protocol (ARP) pickup destined for the first host. The embodiments of the present application reduce traffic wastage.