公开(公告)号：US20220255837A1

公开(公告)日：2022-08-11

申请号：US17731917

申请日：2022-04-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yuezhuo Sun ,  Ying Xie ,  Yuan Gao

IPC: H04L45/02 ,  H04L45/76 ,  H04L12/46

Abstract: A first data center interconnection (DCI) device in a first data center receives a first packet from a Border Gateway Protocol Ethernet virtual private network (BGP EVPN) neighbor, where the first packet includes routing information of a first forwarding instance of an access device in the first data center and an export route target of the first forwarding instance. The first DCI device obtains a second forwarding instance that corresponds to the first packet, where an import route target of the second forwarding instance matches the export route target of the first forwarding instance. The first DCI device generates a second packet that includes routing information of the second forwarding instance and an export route target of the second forwarding instance, which includes a DCI interworking route target. The first DCI device sends the second packet to a second DCI device in a second data center.