Wednesday, March 27, 2019

VXLAN: what is a VNI?

So I thought I understood VXLAN VNIs, but it seems I don't.

I thought VNIs were buckets and each VNI bucket could have multiple VLANs in that bucket. I've tried to configure two VLANs on a Juniper switch with the same VNI and it didn't like that?

On Juniper switches you set a VLAN name, associate the name with a 802.1q VLAN ID the name with a VXLAN VNI.

So, is a VNI the same thing as a VLAN in that the VNI is for the VXLAN network and the VLAN is for a traditional network?

How does it come into play with the 16 million possible l2 domains? Can the fabric have multiple VNIs with the same 802.1q ID?



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