VXLAN
networkingVirtual Extensible LAN — a network virtualisation technology that encapsulates Layer 2 Ethernet frames within UDP packets.
Pronunciation
Correct
V-X-LAN
/viːɛksˈlæn/
The letters V and X are spoken individually, then LAN is said as a word (rhymes with 'man'). Stands for Virtual eXtensible Local Area Network.
Source: www.rfc-editor.org(official spec)