Shared Printer Problem

I have set up my Canon printer to be shared with my second, routed,

However, I'm not able to print from my second computer. I receive an
"Error - Sent to Printer" message in my printer queue.

Is it possible that the problem is that I have the wrong ports selected in
both computers.

If that's the problem, how do I find the name or number of the port in my
host computer?