How does a lightweight access point communicate with a wireless LAN controller?
- Through an IPsec tunnel
- Through a CAPWAP tunnel
- Through a GRE tunnel
- Directly over Layer 2
Explanation
Lightweight access points (LAPs) communicate with a wireless LAN controller (WLC) using the Control And Provisioning of Wireless Access Points (CAPWAP) protocol. CAPWAP is a standard protocol that is used to control and manage LAPs in a wireless LAN.
It allows the LAPs to communicate with the WLC over the network, and to receive configuration and policy information from the WLC. CAPWAP uses a tunneling mechanism to encapsulate the control messages between the LAPs and the WLC and to ensure that these messages are transmitted securely.
The other options you listed, IPsec, GRE, and direct Layer 2 communication, are not used for this purpose.
Therefore, the correct answer is: “Through a CAPWAP tunnel”
