Home > Networking Solutions > Converged and Hyperconverged Solutions > VxRail Networking Solutions > Guides > VMware Cloud Foundation on VxRail Multirack Deployment Using BGP EVPN - Part 2 of 2 > Introduction
Before creating the IP underlay that drives the SDDC, it is essential to plan out the networks, IP subnets, and external services required. Also, planning of the prerequisites on all required switching hardware is recommended.