Hello, please check these links deployment planning [URL] Dell VxRail Network Planning Guide [URL] VxRail: Initial configuration with external vCenter 7.0 Update 2 fails with error: Failed to add host to VDS VMware HCIA Distributed Switch [URL]   Hope that helps!  
Hello,   I am using Dell Switch S4040  and my VxRails nodes are connected to this switch ..during vxrail deployment it was able to find nodes but at the end of deployment when you reach "Validate Configuration" it fails with an error " Failed to create a workflow: Cannot find any host by auto-discovery"  I need to check the status of my Dell Switch S4040 - IPV6 Multicast enabled or not..can you guys help me with the CLI reference for the same or how do I make sure IPV6 multicast enabled or not 
Dell Switch S4040 - IPV6 Multicast