Registy change for DHCP scope subnet mask

I am condensing our network down and combining my PC's from 2 locations so
they are on the same network. Site A is 192.168.1.x and site B is
192.168.2.x both have 255.255.0.0 as their subnet mask. There is no way to
edit the subnet mask in my DHCP scope to change it from 255.255.0.0 to
255.255.255.0. I was browsing through the registry and I found some
sections in there where it showed what my subnet mask was on my DHCP scope
on my DHCP server. Can I change the values from 255.255.0.0 to
255.255.255.0 and make it work that way? The reason I don't want to delete
the scope and recreate it is because I have already spent hour setting up
the DHCP reservations for all my clients and I really do not want to have to
go back and redo it all.

Thanks

Hello Scott,

You got a description how to handle in your first posting without the reservations.
So check out this articles about changing settings with a script that you
run with netsh command. Read both of them carefully and i will be sure, that
you can change your reservations to the new scopes without any big effort.
Most settings you can do with copy and paste.

http://blogs.msdn.com/anto_rocks/arc...28/381539.aspx

http://www.2000trainers.com/windows-...ge-dhcp-netsh/


Best regards

Meinolf Weber
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> I am condensing our network down and combining my PC's from 2
> locations so they are on the same network. Site A is 192.168.1.x and
> site B is 192.168.2.x both have 255.255.0.0 as their subnet mask.
> There is no way to edit the subnet mask in my DHCP scope to change it
> from 255.255.0.0 to 255.255.255.0. I was browsing through the
> registry and I found some sections in there where it showed what my
> subnet mask was on my DHCP scope on my DHCP server. Can I change the
> values from 255.255.0.0 to 255.255.255.0 and make it work that way?
> The reason I don't want to delete the scope and recreate it is because
> I have already spent hour setting up the DHCP reservations for all my
> clients and I really do not want to have to go back and redo it all.
>
> Thanks
>