A centralized wireless network is built with 1 WLC and 32 lightweight APs. Which one of the following best describes the resulting architecture?
- A direct Layer 2 path from the WLC to each of the 32 APs, all using the same IP subnet
- A direct Layer 3 path from the WLC to each of the 32 APs, all using the same IP subnet
- 32 CAPWAP tunnels daisy-chained between the APs, one CAPWAP tunnel to the WLC
- 32 CAPWAP tunnels—1 tunnel from the WLC to each AP, with no IP subnet restrictions
Explanation: Because the network is built with a WLC and APs, CAPWAP tunnels are required. One CAPWAP tunnel connects each AP to the WLC, for a total of 32 tunnels. CAPWAP encapsulates wireless traffic inside an additional IP header, so the tunnel packets are routable across a Layer 3 network. That means the APs and WLC can reside on any IP subnet as long as the subnets are reachable. There are no restrictions for the APs and WLC to live on the same Layer 2 VLAN or Layer 3 IP subnet.
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