What does the Cisco WLC Layer 3 roaming feature allow clients to do?

Question

Options

• Amaintain their IP address when roaming to an AP or controller with a different client VLAN
• Bmaintain their connection between APs even when the AP management VLANs are different
• Cmaintain their connection even if the client IP address changes when roaming
• Droam seamlessly between controllers even when the controller management VLANs are different

• A
  4% (1)
• B
  4% (1)
• D
  93% (25)

Explanation

Cisco WLC Layer 3 Roaming Explained

Layer 3 roaming on a Cisco Wireless LAN Controller (WLC) allows clients to roam seamlessly between controllers that exist on different IP subnets or management VLANs, maintaining the session by tunneling traffic back to the anchor controller - this is exactly what option D describes. Option A is incorrect because Layer 3 roaming does not preserve the client's original IP address across different client VLANs; instead, the client may obtain a new IP from the new subnet (the anchor controller handles the tunneling, not IP preservation). Option B describes a Layer 2 concern related to AP management connectivity, which is unrelated to the roaming feature itself. Option C is essentially the opposite of how roaming works - maintaining a connection despite an IP change is a workaround, not the purpose of Layer 3 roaming.

Memory Tip: Think of Layer 3 = different subnets. Layer 3 roaming solves the problem of controllers on different networks (Layer 3 boundaries) by using a mobility tunnel between the foreign and anchor controllers - just like how Layer 3 in networking always deals with routing between different subnets.

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