increase DHCP range

Question

_{Tuesday, October 11, 2011 8:08 AM}

I configured scope 192.168.1.0 , range 192.168.10 - 192.168.1.250 subnet mask 255.255.0.0

it's now full and i have more than 500 PC

I need dhcp assign IP to PCs from range  192.168.2.2-192.168.2.250 after IPs occured from scope192.168.1.0

but I need solution another than Vlan

thanks for all

All replies (7)

_{Tuesday, October 11, 2011 8:34 AM ✅Answered}

If it's true that you configured your DHCP scope on 16bit mask (255.255.0.0) then both ranges are still in the same subnet. So, simply go to DHCP management console, select your scope and click right mouse button on it. Choose "Properties" and on "General" tab change "End IP address" to 192.168.2.250

That's all, you don't need VLANs for that. Still the same subnet :)

Regards, Krzysztof Visit my blog at http://kpytko.wordpress.com

_{Tuesday, October 11, 2011 8:46 AM ✅Answered}

Assuming that you have provided the correct mask, you have a usable range of 192.168.1.1 - 192.168.255.254. 192.168.1.0 is a class B address range, but you are using a class B mask.

If you right click the scope, you can change the Start IP and End IP, thus providing a larger range of IPs for distribution.

I am not sure why you are speaking of VLANs, unless your mask is really 255.255.255.0. In that case, to avoid VLANs, you would have to re-address all of your static hosts to have a new mask as well as update DHCP.

I hope I followed your question right here.

A+, Net+, Sec+, MCP, MCTS, VCP4

_{Tuesday, October 11, 2011 9:14 AM}

firstly ,

I made that before "puting end address  192.168.2.250" but no PC assigned IP from that

secondly,

I wrote no Vlan solution because maybe some one write that to me as asolution

so , I wrote that I didn't need that

thanks again for answering

_{Tuesday, October 11, 2011 9:19 AM}

If you did that, then wait until existing scope addresses will be saturated. DHCP server, for sure, will issue new IPs when the previous pool will end.

You can also consider using DHCP SuperScope

http://technet.microsoft.com/en-us/library/cc757614(WS.10).aspx

Regards, Krzysztof Visit my blog at http://kpytko.wordpress.com

_{Tuesday, October 11, 2011 9:31 AM | 1 vote}

Hi,

I also think that you should consider dhcp superscope.

Learn about DHCP Superscope.

http://technet.microsoft.com/en-us/library/cc958938.aspx

Create a superscope

http://technet.microsoft.com/en-us/library/dd759168.aspx

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_{Tuesday, October 11, 2011 9:58 AM}

hi,

 I tried to creat superscope  but the problem that when creat another scope the subnet mask conflicts accoured

_{Wednesday, October 12, 2011 6:34 AM}

Hi,

I think the method that modifying address range for this scope who mentioned by iSiek and Brian is the correct way since we’ve set length46 as subnet mask .

Please try to restart DHCP service to make the modification take effect and we can also verify the available addresses of this scope by checking the scope statistics

Thanks.

Tiger Li

Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.