aggregation switch Data center network design moves from tree to leaf leaf-spine architecture legacy hierarchal leaf-spine design leaf-spine network toward leaf-spine Data center network design moves from tree to leaf FeatureData center network design moves from tree to leaf FeatureData center network design moves from tree to leaf data center network design leaf-spine leaf-spine leaf-and-spine By Ethan Banks Data center network design leaf-spine fabrics Data center network design moves from tree to leaf leaf-spine architecture