After the cutover is completeD. it is generally necessary to check the following items?

After a network cutover is complete, the immediate priority is to validate the operational state and service continuity of the new network. This involves two critical checks. First, verifying the control plane entries (e.g., routing tables, MAC address tables, ARP tables) ensures that the network has converged correctly and paths are established as designed. Second, checking the data flow by testing end-to-end connectivity and application performance confirms that user traffic is being forwarded successfully through the new infrastructure. These two steps directly verify the success of the migration.

A. Software version: This is a preparatory check performed before the cutover to ensure all network devices are running the correct, compatible software versions.
B. physical topology: Verifying physical cabling and device connections is part of the implementation and pre-check phase, conducted before the live traffic cutover.

1. Huawei HCIP-Datacom-Advanced Routing & Switching Technology V1.0 Training Material.

Reference: Chapter on "Network Migration," section "Post-Cutover Verification." This section details the essential steps to validate a successful cutover, emphasizing the verification of routing tables (control plane) and service connectivity tests (data flow) as primary tasks after the network is live. Preparatory steps like checking software versions and physical links are covered in the "Pre-Cutover Preparation" section.

2. Kurose, J. F., & Ross, K. W. (2021). Computer Networking: A Top-Down Approach (8th ed.). Pearson.

Reference: Chapter 5: "The Network Layer: Control Plane." The principles of network management and operations discussed implicitly support the practice of verifying control plane state (routing tables) and data plane functionality (forwarding) after any significant network change, such as a cutover, to ensure operational integrity.