Expand IP

Microsoft / Windows 2003
April 1, 2009 at 03:19:29
Specs: Windows Server 2003
We have a server that is runnign out of IP addresses anyone help with what to do here?

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April 1, 2009 at 03:22:02
Change the subnet mask or DHCP range?

how is it setup, are you using DHCP, or manally setting ips, what is the subnet mask you are using?

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April 1, 2009 at 03:51:41
we are using dhcp and subnet mask of, also any link to some literature so i can bring myself up to speed on this will be greatly appreciated.

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April 1, 2009 at 04:23:03
You can have 254 pcs on a mask of

Use a subnet calculator, basically the smaller the 255 number becomes the more hosts (ips) you can can host so, can have more hosts than and so on until the 255 reaches 0 and then you have a default subnet mask of

So if you wanted say 500 pcs you would use a mask


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April 1, 2009 at 07:47:50
That will be great. Thanks!

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April 1, 2009 at 08:21:19
That does not look right to me. results in 510 max addresses and has a range of - if you put in the cidr calculator. This is a supernet. You will have problems if you just change the subnet mask without changing the ip range.

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