We are about to migrate away from a class C ip structure (192.168.100.x) to
class B (http://www.subnet-calculator.com/subnet.php?net_class=B)

I was basically planning on coming in on a weekend and going around and
changing all static ips to their new class B version..

Our domain is 2008 R2, with two DC's, two DNS and one DHCP.. I was going to
create a new scope reflecting this new class.. then deactivate the old dhcp
and activate the new one.. having everyone power down friday before leaving,
so monday they will get the new class B address..

In changing the ip's on the DC's (with dns/dhcp services).. are there any
things i havent thought of, that i should be doing as i make these changes..

I'm thinking i may have to change some dns records related to the domain/AD
and these DC's manually..

Everything we do is ran off of two Hyper-V virtual server hosts as well.
(with virtual nics).

Any thoughts.. has anyone gone through this changeover.

Thanks

The only problems may come from static entries, ie addresses entered
manually.
You also didn't mention how many subnets you have. Are you well covered with
routing?
How many network printers you have? These usually have static addresses.

"markm75g" <markm75g@newsgroup> wrote in message
news:67C073FF-53EF-48A6-A93A-F0FCE203AB6B@newsgroup

> We are about to migrate away from a class C ip structure (192.168.100.x)
> to
> class B (http://www.subnet-calculator.com/subnet.php?net_class=B)
>
> I was basically planning on coming in on a weekend and going around and
> changing all static ips to their new class B version..
>
> Our domain is 2008 R2, with two DC's, two DNS and one DHCP.. I was going
> to
> create a new scope reflecting this new class.. then deactivate the old
> dhcp
> and activate the new one.. having everyone power down friday before
> leaving,
> so monday they will get the new class B address..
>
> In changing the ip's on the DC's (with dns/dhcp services).. are there any
> things i havent thought of, that i should be doing as i make these
> changes..
>
> I'm thinking i may have to change some dns records related to the
> domain/AD
> and these DC's manually..
>
> Everything we do is ran off of two Hyper-V virtual server hosts as well.
> (with virtual nics).
>
> Any thoughts.. has anyone gone through this changeover.
>
> Thanks