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Difficulty: EasyWLAN Infrastructure Connections and LAG

A network technician is installing a new Cisco Lightweight Access Point (LAP) that will operate in default Local mode. The access point connects directly to an access-layer Catalyst switch port and will tunnel all user traffic back to the central Wireless LAN Controller (WLC) via CAPWAP. Which switch port configuration is required to properly support this access point connection?

  1. An access port assigned to the dedicated VLAN used for AP management traffic.Answer
  2. B
    An 802.1Q trunk port configured to locally switch and tag individual client VLANs.
  3. C
    An EtherChannel bundle operating in LACP active mode across multiple physical interfaces.
  4. D
    A trunk port with a native VLAN that differs from the management subnet configuration.

Answer

An access port assigned to the dedicated VLAN used for AP management traffic.
When a Cisco Access Point operates in standard Local mode, all client traffic is encapsulated within CAPWAP tunnels and sent directly to the Wireless LAN Controller (WLC). The AP itself only requires an IP address on the management network to build the CAPWAP control and data tunnels. Therefore, the connected switch port should be configured as a standard access port assigned to the AP management VLAN.

Step-by-Step Solution

1
Identify the operating mode of the Cisco Lightweight Access Point.
The AP operates in Local mode.
Local mode APs encapsulate all wireless client data inside CAPWAP tunnels back to the WLC.
2
Determine the physical infrastructure switch port requirements for a Local mode AP.
The AP only sends and receives untagged management traffic to establish its CAPWAP tunnel.
Because client VLANs are not locally bridged at the access layer switch, an 802.1Q trunk is unnecessary.
3
Select the correct switch port configuration mode.
Configure the switch interface as an access port in the AP management VLAN.
This provides IP reachability for the AP to discover and join the WLC.

Key Concept

Switch port configuration requirements for Local mode lightweight AP infrastructure connections
Estimated Time:45s
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Topics

WLAN Infrastructure Connections and LAG

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