Hi,
- What is the meaning of adding a printer to the server? Either sharing the printer to the server or the server is with printer server role and adding printers.
For the latter one, you could check the step by step guidance with screenshots from below link:
http://woshub.com/printer-pooling-how-to-configure-a-printer-pool-in-windows-server-2012-r2/
Please note: Information posted in the given link is hosted by a third party. Microsoft does not guarantee the accuracy and effectiveness of information.
2. As far as I know, The spooler requires the same ports as required for File sharing when the clients communicate with the print server(the machine with shared printer and conduct printer job). According to the blog, TCP ports 139 and 445, and UDP ports 137 and 138 are requried.
https://video2.skills-academy.com/en-us/previous-versions/windows/it-pro/windows-server-2003/cc787076(v=ws.10)?redirectedfrom=MSDN
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Hope this helps and please help to accept as Answer if the response is useful.
Thanks,
Jenny