Regarding VXLAN, which statement is correct

VXLAN is used in cloud DC scenarios to replace traditional vlan technology

Vxlan is a two-layer network superimposed on a three-layer network. It is used to solve the limitation that VMs can only migrate under the two-layer network in a VLAN network.

Data packets encapsulated by VXLAN cannot be transmitted across the Layer 2 network

After VXLAN encapsulation, bandwidth will be insufficient