VXLAN overview
Virtual eXtensible LAN (VXLAN) is a MAC-in-UDP technology that provides Layer 2 connectivity between distant network sites across an IP network. VXLAN is typically used in data centers for multitenant services.
VXLAN provides the following benefits:
Support for more virtual switched domains than VLANs—Each VXLAN is uniquely identified by a 24-bit VXLAN ID. The total number of VXLANs can reach 16777216 (224). This specification makes VXLAN a better choice than 802.1Q VLAN to isolate traffic for VMs.
Easy deployment and maintenance—VXLAN requires deployment only on the edge devices of the transport network. Devices in the transport network perform typical Layer 3 forwarding.
The device supports only IPv4-based VXLAN. IPv6-based VXLAN is not supported.