vxlan without clos?

[SandevChopra07800]

Hi, I have a customer requirement to run Vxlan between 2 DCs, but without the clos (spine/leaf) architecture. The reason is primarily cost, so they didn't invest in a bunch of switches with SDN. The use case is just vm-mobility across the DCs.

Just want to know is this even doable without clos? 

[jgomezve · Accepted solution]

Hello,

Yes, VXLAN is only an overlay protocol. It does not care about which topology you have in the Underlay as long as you have VTEP reachability. Normally clos topologies are used for the sake of redundancy in the underlay. As an example in ACI we run VXLAN to connect multiple Sites/Pods and we don’t care about the underlying topology (IPN/ISN) as long as the VTEP are reachable

Maybe, in order to efficiently handle BUM traffic you should support Multicast in the Underlay topology but it is not a hard-requirement

Regards,
Jorge