A company's business runs partly in its own data center and partly in Huawei Cloud, and the IP network segments of both are 192.168.xx. The company currently hopes to achieve Layer 2 network…

A company's business runs partly in its own data center and partly in Huawei Cloud, and the IP network segments of both are 192.168.xx. The company currently hopes to achieve Layer 2 network interconnection between the local data center and the cloud business so that online and offline services can serve as primary and backup for each other. It is necessary to minimize the impact on existing network services while ensuring security. Which of the following methods are suitable? (Multiple choice)