Customer is trying to connect an X670-G2-48x (fw 126.96.36.199) with Dell VxRail 500 using 3m DAC (#10305). Isn't getting any link light or anything. Dell consultant onsite so for sake of time, he tries Intel SFP+ optical transceiver in both devices and a simple fiber patch cord between the two devices. Gets link and appears to work just fine. Hasn't done any testing and doesn't have an Extreme SFP+ transceiver to use currently.
Anyone experience issues with DACs between Dell VxRail systems and XOS switches?
Any suggestions on details to look for?