Thursday, January 23, 2020

Leaf Spine vs 2 tier ?

We’re looking at refreshing our current DC network, which currently follows a classic three tier architecture. We have approximately 2k VM hosts in our environment plus another 75 servers (tin)

Our DCs are geographically within 5km of each other connected by dedicated fibre.

Vendors have been pitching the Clos model but im trying to work out the overall benefit and if we’d even need that level of potential scale.

So the options are

1) two tier architecture with DC core switches connecting ToRs using MLAG

2) Clos architecture with two spine switches and dual ToR in each cab. Approx 16 cabs across both DCs

With option 2 is vMotion supported over VxLan?



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