VXLAN

VXLAN is a network virtualisation technology addressing scalability problems in large cloud computing environments by applying VLAN-like encapsulation to wrap layer 2 Ethernet frames in layer 4 UDP datagrams.

The standard was originally created by VMware, Arista Networks and Cisco and is implemented by Broadcom, Citrix, Dell, Red Hat and others.

Concepts

  • VNID is a 24-bit identifier which identifies the logical network, enabling adjacency.
  • VTEPs are VXLAN endpoints, which may be either physical or logical switch ports.

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