@Mihau How a DNS setting of a single device can affect the whole network is beyond me. Maybe it is an IP conflict between your Dell and the router. Check the DHCP pool settings on your router and...

@Mihau You are probably doing some heavy multicasting, but you do not control it. Just turning on RSTP will not solve that problem. Some configuration needs to be performed. If you do multicasting,...

@CabinetCompany I like your approach and actually I have a similar setup, all 10Gb at the core and even two servers connected to it. However my primary goal was different. I wanted 10Gb connections...

@PP_link Thanks for sharing. Nice to know it worked out. I use 10Gtek SFP+ modules with OM3 (aqua) cables. DAC cables for short distances worked for me, too. Good luck!

@PP_link Yep, not as friendly as “other OEM switches” configuration wizards, but the information is there. Chapter 2.4 in the User Guide.

@Clive_A If think we need a link to the switch's user guide to resolve this issue. It looks like OP can't find it and trully I can't find it, either. It is my understanding that OP just wants to...