A large shopping mall is planning to deploy a wireless network for customers. The network will use a lightweight AP topology. The network designers are considering the roaming by wireless clients. Which statement describes a difference between Layer 2 roaming and Layer 3 roaming?

IT Questions Bank › Category: CCNP › A large shopping mall is planning to deploy a wireless network for customers. The network will use a lightweight AP topology. The network designers are considering the roaming by wireless clients. Which statement describes a difference between Layer 2 roaming and Layer 3 roaming?

Layer 2 roaming occurs between two APs configured with the same VLAN and IP subnet, whereas Layer 3 roaming occurs between two APs configured with different VLANs and IP subnets.
Layer 2 roaming does not require the client to contact a DHCP server, whereas Layer 3 roaming requires the client to contact a DHCP server.
Layer 2 roaming does not require communicating to a WLC through CAPWAP, whereas Layer 3 roaming does.
Layer 2 roaming occurs between two APs that are bound to the same WLC, whereas Layer 3 roaming occurs between two APs that are bound to different WLCs.

Explanation: Both Layer 2 and Layer 3 roams are intercontroller roaming. In intercontroller roaming, a client roams from one AP to another AP that is bound to a different WLC. An AP communicates to the bounding WLC through a CAPWAP tunnel. If the two APs involved in an intercontroller roaming are configured with the same VLAN and IP subnet, Layer 2 roaming occurs. If they are configured with different VLANs and IP subnets, a Layer 3 roaming occurs.

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