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Hello:

I’ve run into a little bit of a problem here with my inherited DHCP scope. Currently we’re using a 10.211.10.0/24 scope (and 10.211.50.0/24) for our network. Well, we’ve run out of IPs (or soon will).

I went and created a 2nd scope, and hoped that if I created a scope, disabled it, and enabled the original scope, I could at least configure all the reservations and flip the switch at a later time. Nope, can’t do that.

I tried, in vain, to find a hack that I could do to just change the subnet mask, but you can’t do that either.

So my question is… If I create a /23 scope, disable it, configure it, deactivate and delete original scope… can I change the IPs of the scope without experiencing any problems?

1 Spice up
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I don’t think you can create a scope that uses the same range as an existing scope, IIRC. I went through this pain earlier this year!

I went from 192.168.2.x, 255.255.255.0 to 255.255.248.0 and I’m glad I gave myself the extra wiggle room. I now have one IP range that I use for systems that I don’t want to have internet access, just makes it easier to understand when you see the .4.x if that makes sense.

I think I had to delete the scope and then recreate it, it was a pain and I did it during business hours. Just told the users there was a problem with the server but don’t worry, I fixed it. All those hours spent reading BOFH paid off!!

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is this running on “Windows Server 2003” I just played around with one of my virtual servers. and all you have to do right click the currently running scope and change the start or end IP Address to give you more of a range. Start IP = 10.211.10.1 End IP = 10.211.10.50 I dont know why you have 10.211.10.0 as 0 and 255 are not ment to be used for computer.

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o0MattE0o : Are you saying that Win2k3 can shift the subnet on the fly? IF so, that makes life a lot easier. Limey: I really hate the idea of deleting the scope because I have a lot of “DHCP Static” machines using reservations. If I have to, so be it. I