VXLAN-DCI network model

As shown in Figure 21, the VXLAN-DCI network contains edge devices (EDs) located at the edge of the transport network and VTEPs located at the data center sites. VXLAN tunnels are established between VTEPs and EDs, and VXLAN-DCI tunnels are established between EDs. VXLAN-DCI tunnels use VXLAN encapsulation. Each ED de-encapsulates received VXLAN packets and then re-encapsulates them based on the destination before forwarding them through a VXLAN or VXLAN-DCI tunnel.