This document provides an overview of a Dell Enterprise SONiC topology for a VxRail vSAN stretched cluster. The stretched cluster includes a preferred site, a secondary site, and a witness site. The example provided follows data center networking best practices, including a leaf-spine architecture with Border Gateway Protocol (BGP) and Ethernet Virtual Private Networking (EVPN). A BGP EVPN topology provides the best combination of scalability, performance, and VM mobility in the data center. Example switch configuration files are provided as attachments to this document.