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, and the additional requirements for Cloud Foundation.
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, known as spine switches, enable multi-rack interconnectivity.
The number of Ethernet ports from each VxRail node you reserve for Cloud Foundation on VxRail networking will drive the configuration process for each switch port connected to a VxRail node port. If the VxRail network traffic and Cloud Foundation network traffic will be physically separated between the nodes and the leaf switches, the VLANs for VxRail and Cloud Foundation only need to be assigned only to the required switch ports.
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 networks lists the individual VLANs that must 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.