Function of Wireless LAN Controller

B

A Wireless LAN Controller (WLC) is a network component that helps to manage and control wireless access points (APs) in a wireless network. It is typically used in enterprise-level deployments, where multiple APs need to be managed centrally.

The function of a Wireless LAN Controller includes:

C. Sending LWAPP packets to access points: The WLC uses Lightweight Access Point Protocol (LWAPP) to communicate with access points in the wireless network. LWAPP packets are used to send control and management information between the WLC and APs, such as configuration information, firmware updates, and monitoring data.

A. Registering with a single access point that controls traffic between wired and wireless endpoints: The WLC acts as a central point of control for all the APs in the wireless network. It registers with each AP and manages their configuration and behavior. The WLC also controls the traffic flow between wired and wireless endpoints, ensuring that wireless clients can communicate with the wired network securely and efficiently.

B. Using SSIDs to distinguish between wireless clients: The WLC can define multiple Service Set Identifiers (SSIDs) for different groups of wireless clients. Each SSID is associated with a different set of security policies, allowing the WLC to enforce different levels of access and authentication for different types of wireless clients.

D. Monitoring activity on wireless and wired LANs: The WLC can collect monitoring data from each AP in the wireless network, allowing it to monitor the performance and behavior of the network as a whole. The WLC can also collect monitoring data from wired network devices, allowing it to monitor traffic flow between wired and wireless endpoints.

In summary, the Wireless LAN Controller is a critical component of enterprise wireless networks, as it provides centralized management, control, and monitoring of access points. Its functions include sending LWAPP packets, registering with access points, using SSIDs to distinguish between wireless clients, and monitoring activity on wireless and wired LANs.