Which of the following steps are used to implement automatic network migration during the upgrade...

Huawei'sautomatic network migration solutionwhen upgrading from a legacyN7-5-2 networkto anSDN-based CloudFabric networkinvolves the followingkey steps, as outlined in the CloudFabric documentation:

A. Gateway migration: Move north-south traffic gateways from legacy to new fabric for optimized traffic flow.

B. Live network analysis: Import configurations and traffic patterns from the existing network into iMaster NCE.

C. Layer 2 interconnection: Create Layer 2 links between old and new networks for seamless traffic bridging.

D. Service migration: Gradually migrate VMs and workloads using scheduling tools without downtime.

All steps are necessary to ensure smooth migration without service disruption.