An enterprise is using two wireless controllers to support the wireless network. The data center is located in the head office. Each controller has a corporate WLAN configured with the name…

Consolidating all APs onto one controller eliminates the benefit of having two controllers and creates a single point of failure, without addressing the root cause of the roaming problem.

A wireless client identifies a network by its SSID. When two controllers advertise different SSID names, client devices treat them as entirely separate networks and cannot perform seamless roaming between APs managed by different controllers. Configuring an identical SSID on both controllers allows the client to maintain its network association and roam transparently between any AP in the deployment.

Controller placement in an external data center and internet link speeds have no bearing on SSID configuration or the roaming behavior between local APs and controllers.

Grouping APs by floor on the same controller reduces inter-controller roaming events but does not resolve the fundamental problem that different SSID names prevent seamless cross-controller roaming entirely.