Cloud Foundation on VxRail is supported with either Dell-branded switches or most major enterprise switching products. You should plan on a pair of switches in the top of each data center rack used for Cloud Foundation on VxRail for redundancy purposes. The first rack which supports the Cloud Foundation on VxRail management domain must integrate with your existing data center infrastructure using Layer 3 network services with a pair of uplinks. If your requirements will expand beyond a single rack, plan on expanding to a leaf-spine network topology. A multi-rack deployment will require additional switch ports be reserved on the top-of-rack switches to connect to the spine layer.