configuring manual ip address

Question

configuring manual ip address

I am running MacPro w/High Sierra (10.13.6 (17G65)) and using DHCP on my home network.

However, I have a high end HP copier that scans and saves to a drive on my computer, but I have to identify the IP address of my computer on the scanner for it to work correctly. This works well until I have to reboot my Mac and then the IP address gets reassigned. To correct this, I want to assign an ip number to my MacPro.

I have tried using the Manual IP option but I can't seem to make it work. I have made the changes and then rebooted my Mac, but the Internet doesn't work with the manual address. I have all of the necessary router, gateway information installed but it still is not working. If I change back to DHCP, it starts working immediately.

What am I forgetting to do?

Thank you

Elliot

Mac Pro, macOS High Sierra (10.13.6)

Posted on Aug 1, 2018 4:25 PM

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Answer 1

Top-ranking reply

Tesserax

Level 10

158,208 points

Aug 1, 2018 4:46 PM in response to Elliot-Detroit

Ok, you should have a number of options to get this accomplished:

If your router support DHCP reservations, you can configure it to provide a "static" IP address out of the available DHCP scope to your Mac.
You can configure your Mac's IP manually. That is you will disable it from being a DHCP client. To do so, go to System Preferences > Network > Ethernet or Wi-Fi (depending on how you connect your MBP to the network) > Advanced > TCP/IP
Change the Configure IPv4 option to: Using DHCP with manual address. This option actually still retains your Mac as a DHCP client, but with a fixed address.
In the IPv4 Address field enter an IP address within the scope of your router's DHCP service.

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Answer 2

Aug 1, 2018 6:45 PM in response to Elliot-Detroit

My home Router on Verizon FIOS uses a small subnet that starts at 192.168.0.1 (the Router's address). I only need 255 addresses, so I use 255.255.255.0 as the subnet mask, which gives me from the Router address up to (but NOT including) 192.168.0.255, which is a magical broadcast address.

Verizon make the TV set-top box grab 192.168.0.100. So I assign my Printers' Manual addresses in the lower numbers, like 192.168.0.17, and 18 and so on.

The Router passes out DHCP addresses from 192.168.0.150.

Nothing collides, it all stays under .254, and it all works.

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configuring manual ip address

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