公开(公告)号：US11516110B2

公开(公告)日：2022-11-29

申请号：US16910204

申请日：2020-06-24

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Chongpu Xia ,  Shijing Huang ,  Zhongchao Zhao

IPC: H04L12/751 ,  H04L45/02 ,  H04L41/12 ,  H04Q11/00 ,  H04L101/622

Abstract: A method for obtaining a cross-domain link. The method includes: a control device sends a first message to a forwarding device in an internet protocol (IP) domain, where the first message is used to instruct the forwarding device to search for a device adjacent to the forwarding device in an optical domain; the control device receives a second message from an optical network element adjacent to the forwarding device in the optical domain, where the second message includes a first identifier identifying the optical network element, a second identifier identifying a port communicating with the forwarding device and being on the optical network element, and a media access control (MAC) address of the forwarding device; and obtains the cross-domain link between the forwarding device and the optical network element based on the first identifier, the second identifier, and the MAC address of the forwarding device.