In Layer 3 roaming, after a STA roams from one AP to another, the service VLAN of the VAP changes and data packets of the STA are sent to the new serv

B

Layer 3 Roaming

The STA stays in different subnets before and after Layer 3 roaming. To ensure that the STA can still access the original network after roaming, user traffic is forwarded to the original subnet over tunnels.

• In tunnel forwarding mode, service packets exchanged between the HAP and HAC are encapsulated through a CAPWAP tunnel, and the HAP and HAC can be considered in the same subnet. Instead of forwarding the packets back to the HAP, the HAC directly forwards the packets to the upper-layer network.
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https://support.huawei.com/enterprise/en/doc/EDOC1100064365/80acafee/layer-2-and-layer-3-roaming

Hi simon.waweru,
I think the answer is B.

The service VLAN does not change.