Concept Guide

• VXLAN Service nodes for BFD
• Static Virtual Extensible LAN (VXLAN)
• Preserving 802.1 p value across VXLAN tunnels
• VXLAN Scenario
• Routing in and out of VXLAN tunnels
• NSX Controller-based VXLAN for VLT
Components of VXLAN network
VXLAN provides a mechanism to extend an L2 network over an L3 network. In short, VXLAN is an L2 overlay scheme over an L3 network
and this overlay is termed as a VXLAN segment.
Components of VXLAN network
The VXLAN network consists of the following components:
• Network Virtualization Platform (NVP) Controller
• VTEP (VXLAN Tunnel End Point)
• VXLAN Gateway
• VXLAN Hypervisor
• Service Node (SN)
• Legacy TOR
Network
Virtualization
Platform (NVP)
Controller
NVP Controller is the network controller for managing cloud components. The OVSDB protocol is the protocol
used for communication between VTEPs and the controller. The top-level functions of NVP are:
• Provide a GUI for creating service gateways.
• Manage the VTEPs.:
– Binds Port and VLAN
– Install VTEP tunnels
• Distribute the VTEPs to MAC binding to all relevant VTEPs.
• Provide an interface for cloud orchestration in cloud data center management.
VTEP (VXLAN
Tunnel End Point)
VTEPs work as the open vSwitch running on the hypervisor on a virtualized server or as the VXLAN Gateway or as
the Service Node (SN) that is responsible for ooding. The VTEPs are responsible for encapsulation and
decapsulation of VXLAN headers.
NOTE:
Transport Layer Security (TLS) protocol version 1.2 is supported for secure connection between the controller
and the Dell hardware VTEP.
VXLAN Gateways VXLAN Gateways act as the VTEPs that encapsulate and decapsulate VXLAN headers. The roles and
responsibilities of the Gateway are:
• Connects to the NVP client based on user conguration.
• Advertises south-facing VXLAN capable ports to the NVP client.
• Creates logical networks based on messages from the NVP.
• Creates tunnels to VTEPs based on messages from the NVP.
1092 Virtual Extensible LAN (VXLAN)