While the networking requirements for VxRail and Cloud Foundation differ, there is overlap in the sense that Cloud Foundation domains depend on the networking resources enabled by VxRail for connectivity. Therefore, the supporting physical network must be properly designed and configured to support VxRail cluster network traffic, as well as the additional requirements for Cloud Foundation.
Figure 29. VxRail and NSX-T Overlay Networks
A leaf switch is at the lowest tier in a multi-tier architecture, and often referred to as a ‘top-of-rack’ switch. The VxRail nodes will only connect with a leaf switches in a single rack, with the upper tier switches enable multi-rack interconnectivity. The following tasks must be performed in the top-of-rack switches in order to prepare for a VxRail cluster deployment and to prepare to support NSX-T:
Each VxRail node has a separate Ethernet port for out-of-band server management called ‘Integrated Dell Remote Access Controller’ (iDRAC). A separate Ethernet switch is recommended to provide connectivity for server maintenance. The server maintenance traffic can also be redirected through the existing network infrastructure. For complete details about VxRail cluster network requirements, see the Dell EMC VxRail Network Planning Guide
The table in Appendix C: Cloud Foundation on VxRail VLANs lists the individual VLANs that need to be configured on the top-of-rack switches. The example switch configuration syntax displayed in Error! Reference source not found. offers guidance on how to configure an Ethernet switch with sample VLANs and a sample switch port configuration.