Question: what is the difference between layer 2 and layer 3 roaming?
Answer: Layer 2 roaming: STAs move between two APs that belong to the same VLAN. Layer 3 roaming: STAs move between APs that belong to different VLANs. ... Layer 3 roaming: AP1 and AP2 are bound to different service sets and two service VLANs are bound on the WLAN-ESS interface.