Subnetting Private Class B

bvermileon

Reputable
Dec 5, 2014
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4,510
Hey everyone. This might be a simple flaw in my skills or something I haven't been taught in class yet. I have a private class B address of 172.16.0.0 with the default mask of 255.255.255.0. I need 48 subnets. When I convert to binary it is 110000. I borrowed six bits, so my increment would be 4 with a new mask of 172.16.0.0/22 or 255.255.252.0. Here is where I am stuck. We have a group project where we setup a network in a two story building and a separate building using one subnet per floor. Each floor has numerous computers. I only have 2 assignable addresses per subnet, one being the gateway, when I need much much more for all the devices on each floor. Can anyone tell me what I am doing wrong.