VXLAN, VTEPS? What is VXLAN exactly doing in an NSX implementation?

[jmadpalw]

VXLAN, VTEPS? What is VXLAN exactly doing in an NSX implementation?

[gopanaboena]

Hi

VXLAN is the virtual VLAN across layer Layer 2 switches without physical router,

Please refer this link to know more

VXLAN basics and use cases (when / when not to use it)

[dhanarajramesh · Accepted solution]

NSX primarily using overlay networking with the use of the VXLAN protocol and centralized network configuration. Overlay

networking

enables the following capabilities:

1)Creation of a flexible logical layer 2 (L2) overlay over existing IP networks on existing physical infrastructure

without the need to re-architect any of the data center networks

2)Agile provision of communication (east–west and north–south) while maintaining isolation between tenants

3)Application workloads and virtual machines that are agnostic of the overlay network and operate as if they

were connected to a physical L2 network

I would suggest you to read https://www.vmware.com/files/pdf/products/nsx/vmw-nsx-network-virtualization-design-guide.pdf

(page 11)

[padmavathi_sep1]

Using VXLAN, you can create logical networks for your virtual machines across different layer 2 segments. Logical networks are interconnected using logical switches and distributed logical routers. A VXLAN starts and ends at a VTEP, a Virtual Tunnel EndPoints. VTEPs are configured at the ESXi level and represented by a VMkernel port. A VXLAN can span layer 2 and layer 3 segments, it’s not problem to route VXLAN traffic. In this way it’s possible to stretch a layer 2 logical network across a layer 3 boundary! Wow, that will certainly solve some challenges. VXLAN is creating an overlay network, this network is used to shape your virtual network.