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DHCP Scope and Superscope Issue

vmamedov asked
Last Modified: 2010-02-17
Hi Experts,

I have a interesting issue with DHCP scopes and superscope. My old setup had a superscope and 2 scopes inside it, computers/printers would share ip addresses between the two scopes since they all had the same gateway there was no problem. During a network conversion that I did recently, I deleted the existing two scopes which removed the superscope and created 4 new regular scopes. After restarting the server or even the DHCP service, 3 of the new scopes go back into the original old superscope but doesnt. This creates a problem for me since each scope now has its own gateway and when we move computers from one scope to another, that computer can not connect. I am currently using a workaround of never restarting the server/service but need to figure out how to solve this weird/interesting problem. Below is a small diagram of the old setup, the new correct setup and what happens during restart

old setup
       [10.241.26.x scope]
       [10.241.27.x scope]

new correct setup
[10.241.28.x scope]
[10.241.29.x scope]
[10.241.30.x scope]
[10.241.31.x scope]

what happens after restart
       [10.241.28.x scope]
       [10.241.29.x scope]
       [10.241.31.x scope]
[10.241.30.x scope]

Thanks in advance
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Top Expert 2005
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I havent tried simply deleting the superscope, all I have tried is to remove the existing scopes from the superscope. The changes stick but when I restart the DHCP service, the changes revert back.

How certain are you that once I delete the superscope, the scopes underneath it will be fine?

Worst comes to worst I can always delete everything and recreate it all, but I am trying to figure out why this is happening. Why do the changes that I make revert back after a service restart

Top Expert 2005

If you delete the scopes inside the superscope, the superscope still remains.  Although it disappears, it's still there and will come back when new scopes are added.

Deleting the superscope should leave the subscopes intact.


i deleted the superscope and the subscopes stayed,

thanks for your help
Top Expert 2005


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