Dell S3048-ON EMC SmartFabric OS10 Switch Configuration Guide for VxRail 4.7 - Page 13
VxRail in the data center
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4 VxRail in the data center 4.1 Leaf-spine network Dell EMC recommends using a leaf-spine network in the data center with leaf switches configured as VLT peers. The switches and VxRail nodes covered in this guide are shown in Rack 1 in Figure 10 and are incorporated into a data center's leaf-spine network. Spine1 Spine2 L3 L2 S5248F-Leaf1A S5248F-Leaf1B VLTi Leaf-2A Leaf-2B VLTi Leaf-nA L3 Leaf-nB L2 VLTi VxRail node 1 VxRail node 2 VxRail node n Rack 1 Additional VxRail clusters, servers, Additional VxRail clusters, servers, storage, etc. storage, etc. Rack 2 Rack n Leaf-spine connections VLTi connections Device connections Layer 2/Layer 3 boundary Dual switch topology with VLT connected to a leaf-spine network In Figure 10, the Layer 2/Layer 3 boundary is at the leafs, meaning traffic within each rack is switched (Layer 2) and traffic between racks is routed (Layer 3). VMware Validated Design for Software-Defined Data Center 5.1 - Architecture and Design recommends isolating vSAN traffic to its own Layer 2 VLAN. Therefore, for this leaf-spine topology, each vSAN should be contained within a single rack. Since a VxRail cluster contains a vSAN, a VxRail cluster is also contained within a single rack. Note: By default, VxRail does not enable routing of vSAN or vMotion traffic. The leaf-spine topology in Figure 10 scales to sixteen racks or more, depending on the number of ports available in each spine. Racks may contain additional VxRail clusters, switches, servers, storage arrays, and other devices as needed. To configure the remainder of the leaf-spine network, including spine switches, connections between leafs and spines, and routing protocols, see the Dell EMC Networking Layer 3 Leaf-Spine Deployment and Best Practices with OS10 document. 13 Dell EMC SmartFabric OS10 Switch Configuration Guide for VxRail 4.7