Wi-Fi: Connect the monitor (e.g. CMS8500) and your PC to the same Wi-Fi network.
Ethernet: Connect using an Ethernet cable (direct or switch).
Find your PC's IP address on the network (shown in the box below). If using Wi-Fi, use your PC's Wi-Fi IP address.
On your monitor: Go to System Setup → Network → CMS Settings. Set Server IP (or CMS IP) to your PC's IP address.
Set Server Port on your monitor to one of the listening ports: Detecting... (usually 511 or 518).
Enable the CMS/Central Monitor connection in the monitor settings. Set the sending interval (e.g. 5 seconds) to start transmitting.
Once connected, the monitor will show up in the "Select Monitor" list, and its vitals will display in real-time.