Centralized Controller Mode for Access Point Management, Roaming, and SSID Configuration

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The access point mode that relies on a centralized controller for management, roaming, and SSID configuration is called the Lightweight mode.

A lightweight access point operates as a thin client, meaning it offloads most of its processing and management functions to a centralized controller. The controller can manage multiple lightweight access points and provide a single point of control for wireless network operations.

In Lightweight mode, the access point acts as a "dumb" device, forwarding all traffic to the centralized controller for processing and management. The controller is responsible for providing configuration settings for SSIDs, encryption, authentication, and other network parameters.

Roaming is also handled by the controller, which uses algorithms to determine when a client should switch to a different access point for better signal strength or performance.

Overall, Lightweight mode provides centralized management and control for large-scale wireless networks, making it a popular choice for enterprise deployments.

On the other hand, autonomous mode operates independently and does not rely on a centralized controller. In autonomous mode, the access point acts as a standalone device and provides its own management and control functions.

Bridge mode allows two or more access points to connect together as a wireless bridge, creating a point-to-point or point-to-multipoint link between different network segments.

Repeater mode is used to extend the coverage of an existing wireless network by repeating the signal from one access point to another, allowing clients to connect to the second access point instead of the original one.