When I successfully ping an nGWY2 or nECY Eclypse with an MS-DOS Command Prompt, what Port(s) have I verified are opened (particularly with reference to the nLight IT Requirements document at http://www.acuitybrands.com/-/media/Files/Acuity/Products/Controls/nLight/nLight%20System%20Backbone%20IT%20Information%20%2020160505%201%20pdf.pdf?la=en )?
Answer: None of the ports listed in the nLight IT Requirements is tested when you Ping. (Briefly explained at bottom of this article).
A ping test will merely tell you if you CAN (in general) communicate with another computer. Whether SensorView DOES communicate from computer to nGWY2/nECY then also depends on the port availability as presented in the nLight IT Requirements document.
"Ping" does not have/use a port number.
Ping uses the functions of the Internet Control Message Protocol (ICMP) to get back a packet reporting on the status of a transmission and analyzes the speed of its return. ICMP is an Internet Layer protocol. It operates at a lower level than the layer that deals with ports. Ping cannot use port numbers because it operates at a level where port numbers are irrelevant.