Second DHCP Scope

February 13, 2011 at 18:05:00
Specs: Windows 2008
hi to all,

I have windows 2008 DHCP server running out of IP addresses, my current scope is configure 10.60.0.x subnet I tried to create a second scope 10.60.1.x subnet but the server gives me the following error: the DHCP scope parameters are incorrect. either the scope already exists, or its properties are inconsistent with the subnet address and mask of a scope already added. Can someone please explained to me why this error is coming out and how to solve it. I would like to split our clients from our VOIP vlan in order to avoid ip conflicts from the same DHCP scope.

in advance thank you, for you time and support



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February 13, 2011 at 18:22:43
You get this error, cause the range you've defined by using subnet mask is:
first host:
last host:

As you can see, the two scopes, you've configured, are overlapping.

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February 13, 2011 at 19:18:16
Hi Paul,

Thank you for your response. in other words will be better to delete the current range and create a new one with

Once again thank you



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February 13, 2011 at 22:38:09
I think, there is no other way, to manage it.

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Related Solutions

February 14, 2011 at 08:03:13
As paulsep pointed out, you presently have the following network configured:

first host:
last host:

Do the math. That gives you 2^16 (2n-1) addresses (65,536)

Expand your scope and you've added more IP's.

I suspect from what you wrote above your scope is: to

Your scope could be: to

If you have a specific need to have two separate subnets then by all means use:

But if not stick with and just expand your scope.

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***

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February 14, 2011 at 20:11:16
"DHCP server running out of IP addresses"

and you talk about VoIP. May I inquire as to how many devices? Phones vs computing amounts?

Answers are only as good as the information you provide.
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