Centralized VXLAN gateway group deployment
As shown in Figure 14, a VTEP group uses redundant centralized VXLAN IP gateways to provide reliable gateway services for VMs in the VXLANs. All member VTEPs in the group participate in Layer 3 forwarding and load share traffic between the Layer 3 network and the VXLANs. This design distributes processing among multiple VTEPs and prevents single points of failure.
Figure 14: Example of centralized VXLAN IP gateway group deployment
The VTEP group is a virtual gateway that provides services at a group IP address. Access layer VTEPs set up VXLAN tunnels to the group IP address for data traffic forwarding. Each access layer VTEP also automatically sets up tunnels to the member IP addresses of VTEPs in the VTEP group. For all VTEPs in the VTEP group to have consistent forwarding entries, these tunnels are used for transmitting broadcast, multicast, and unknown unicast floods.