Dell PowerSwitch S5212F-ON EMC SmartFabric OS10 User Guide Release 10.5.1 - Page 931

15 VXLAN A virtual extensible LAN (VXLAN) extends Layer 2 (L2) server connectivity over an underlying Layer 3 (L3) transport network in a virtualized data center. A virtualized data center consists of virtual machines (VMs) in a multi-tenant environment. OS10 supports VXLAN as described in RFC 7348. VXLAN provides a L2 overlay mechanism on an existing L3 network by encapsulating the L2 frames in L3 packets. The VXLANshared forwarding domain allows hosts such as virtual and physical machines, in tenant L2 segments to communicate over the shared IP network. Each tenant L2 segment is identified by a 24-bit ID called a VXLAN network identifier (VNI). Deployed as a VXLAN gateway, an OS10 switch performs encapsulation/de-encapsulation of L2 frames in L3 packets while tunneling server traffic. In this role, an OS10 switch operates as a VXLAN tunnel endpoint (VTEP). Using VXLAN tunnels, server VLAN segments communicate through the extended L2 forwarding domain. Figure 11. VXLAN topology NOTE: ● The platforms that support only L2 VXLAN gateway include: S4048-ON, Z9100-ON, and Z9264F-ON ● The platforms that support both L2 VXLAN and L3 VXLAN routing (Routing In and Out of Tunnels (RIOT)) include: ○ Asymmetric IRB: S4048T-ON, S4248-ON series, S4100-ON series, S5200-ON series, and S6010-ON ○ Symmetric IRB: S4048T-ON, S4100-ON series, S5200-ON series, and S6010-ON After VXLAN decapsulation, routing between virtual networks and tenant VLANs is supported only on the following platforms: ● S4200-ON series ● S5200-ON series On other platforms, routing after decapsulation is performed only between virtual networks. You can connect an egress virtual network to a VLAN in an external router, which connects to an external network. This feature is not supported on the following platforms: ● S3048-ON VXLAN 931