anyone familiar with VxLAN?

What is it and where is it used?
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Please, to understand which problems VXLAN is targeting and what it is, read first few chapters of document RFC 7348 - Virtual eXtensible Local Area Network (VXLAN): A Framework   for Overlaying Virtualized Layer 2 Networks over Layer 3 Networks. :)
Pallavi GodseSr. Digital Marketing ExecutiveCommented:
VxLAN is actually Virtual Extensible LAN (VXLAN), a network virtualization technology that helps in addressing the scalability issues related to large cloud computing deployments. It makes easier for network engineers to scale out a cloud computing environment while logically isolating cloud apps and tenants.

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Tiras25Author Commented:
It just came on my radar as a replacement for traditional vlans in larger infastructures.  How prevalent is this?
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Typically, that's not the use case for VxLAN.
Tiras25Author Commented:
my understanding is vlans support up to 4096 L2  segmentations while VxLan support over 16 million L2 segmentations
It is not coming down to bare numbers - which protocol can support more. It could be used in large infrastructure, but that's not the typical use case ($$$). VLANs are generally kept local (one or few buildings) and are terminated on distribution. In last couple of years there is a recommendation that VLANs should not even leave cabinet (routing is going down to access switches). We don't have end-to-end design anymore, so the same VLAN numbers can be reused on each location.

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