Just added another pair of Cumulus Linux leaf (top of rack) switches and more VMware compute nodes to our production system.
We use a Layer 2 network fabric, see my recent post about an example: Ansible Playbook for Cumulus Linux (Layer 2 Fabric)
Got a bit tight in the rack for the DA cables, basically each server has 2x 10Gbit/s data- and 2x 10Gbit/s storage-network connections.
Front rack view:
Another two racks will follow soon in the same configuration.