Explore the direct forwarding mode in CAPWAP-based wireless networks, where user data packets are forwarded directly by access points to the upper-layer network without encapsulation in CAPWAP tunnels, offloading data forwarding from the WLAN controller.
Table of Contents
Question
In direct forwarding mode, user data packets are encapsulated in a CAPWAP tunnel and then forwarded by the AC to the upper-layer network.
A. True
B. False
Answer
B. False
Explanation
<answer>B. False</answer>
In direct forwarding mode, user data packets are not encapsulated in CAPWAP tunnels. Instead, they are forwarded directly by the access point (AP) to the upper-layer network without going through the WLAN controller (AC).
Direct forwarding mode is a data forwarding method used in CAPWAP-based wireless networks. In this mode, the AP handles the encapsulation and forwarding of user data packets directly to the wired network, bypassing the WLAN controller. The WLAN controller is only involved in managing and controlling the AP, not in forwarding user data traffic.
The process works as follows:
- The AP receives user data packets from wireless clients.
- The AP encapsulates the user data packets using traditional Ethernet frames or other appropriate encapsulation methods, depending on the configured forwarding mode (e.g., Local MAC, Split MAC, etc.).
- The AP forwards the encapsulated user data packets directly to the upper-layer network (e.g., a router or switch) without going through the WLAN controller.
- The WLAN controller is responsible for managing and controlling the AP but does not participate in the forwarding of user data packets.
This direct forwarding approach reduces the load on the WLAN controller and improves the overall performance of the wireless network by offloading the data forwarding task to the APs. It is particularly useful in large-scale deployments or scenarios where the WLAN controller’s resources need to be reserved for management and control functions.
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