A seamless wireless infrastructure migration was recently completed, transitioning Cisco 4800 Access Points from a legacy AireOS 5520 Wireless LAN Controller to the next-generation Cisco Catalyst 9800-40M WLC (running IOS-XE).
Instead of manually shifting the access switch interface VLAN tags from 3202 to 3201 on the Cisco Catalyst 2960X switches during the reboot window, a Python script utilizing Netmiko or an Ansible playbook would be implemented to execute the configuration changes across all 48 ports simultaneously. Automating the layer-2 interface adjustments would remove the risk of human error and significantly accelerate the deployment cadence when dealing with large-scale, multi-switch campus environments
