Dell PowerEdge R730xd - Layer 2 Leaf-Spine Topology

15 Dell EMC Networking with Isilon Front-End Deployment and Best Practices Guide | version 1.0
4.5 Layer 2 leaf-spine topology
In a layer 2 leaf-spine network, traffic between leafs and spines is switched (except for a pair of edge leafs) as
shown in Figure 13. VLT is used for multipathing and load balancing traffic across the layer 2 leaf-spine fabric.
Connections from hosts to leaf switches are also layer 2.
For connections to external networks, layer 3 links are added between the spines and a pair of edge leafs.
Layer 2 leaf-spine network