Extreme Networks

I am creating a local network (not connected to the internet or another switch) with an extreme summit x440-24t switch. There are 3 devices connected to the switch, for some reason I can only ping one of the devices from the other 2 but the switch is...

We have a Summit x440-24t switch with AVB support which we use for demos where multiple computers are connected and synchronized using gPTP. We had this capability working on the switch for the past 5-6 years. I am trying to test an updated version o...