Having trouble running iperf3 between my Synology and Mac Studio
I enter ./iperf3 -c 192.168.?.?
From the Mac terminal I get
[ iperf3: error - unable to connect to server: Connection refused ]
form the Synology this is the setup
What might I be missing in the setup. Im not running the fire wall on the Synology so the 5201 port should be available
Thank You
I don’t have a Synology, but it looks like you’ve only added the port 5201 once. The port settings are there to map the container port to the local port on DSM, so you should probably put “5201” into the “Local Port” field, too.
On the other hand, I’m not sure if using the same port in both fields will work. Imho it should, but if not, you could try and enter “5202” in the “Local Port” field, and then on macOS execute iperf3 -c 192.168.?.? --port 5202
Thank You Joss. That did the trick. Added 5201 in the local port box.
Did not have to enter the command --port 5201 at the end on the Mac Studio side.
Thank you again for the help it is much appreciated.
Glad it worked! Your network speeds are nice. 
Which 10G adapter are you using on the Mac Studio? Sonnet? QNAP? (Need to buy one too, eventually.)
Ah, silly me. Of course the Mac Studio comes with built-in 10GbE. But the switch is nice. Personally eyeing the Zyxel XGS1210-12… I could later use the two SFP+ ports as uplinks if I ever switch to 25G SFP28. But an all-2.5G solution with 2 SFP+ ports would be awesome… haven’t found any yet, though.
