2 domains on 1 LAN (can i)

i would like to build a replacement domain at the school i work at but i only
have 1 LAN, can i simply exclude some DHCP address from the current domain
and place the domain on the said IP addresses to build and test the new
domain?
--
john.gardner

Absolutely.

"john.gardner" <(E-Mail Removed)> wrote in message
news:
>i would like to build a replacement domain at the school i work at but i
>only
> have 1 LAN, can i simply exclude some DHCP address from the current domain
> and place the domain on the said IP addresses to build and test the new
> domain?

Thanks Michael

do i simply use this address range and do not need to change any other
variables or would i get confictions if i just plug the new domsin in using
this 254 ip range? would DHCP etc conflict?

"Michael Giorgio" wrote:

> Absolutely.
>
> "john.gardner" <(E-Mail Removed)> wrote in message
> news:
> >i would like to build a replacement domain at the school i work at but i
> >only
> > have 1 LAN, can i simply exclude some DHCP address from the current domain
> > and place the domain on the said IP addresses to build and test the new
> > domain?
>
>
>

John,
You can use the same network address range, and the same gateway, but you
need to assign clients a different DNS server. The reason it needs to be
different is that:
- it will be an AD integrated zone on the DC
- clients need to register their address in their DNS zone. The default
security would and should prevent them registering in another domain's DNS
zone.
How you do that depends on your circumstances.
Anthony, http://www.airdesk.co.uk


"john" <(E-Mail Removed)> wrote in message
news53F3ED9-AE38-4B46-85D0-(E-Mail Removed)...
> Thanks Michael
>
> do i simply use this address range and do not need to change any other
> variables or would i get confictions if i just plug the new domsin in
> using
> this 254 ip range? would DHCP etc conflict?
>
> "Michael Giorgio" wrote:
>
>> Absolutely.
>>
>> "john.gardner" <(E-Mail Removed)> wrote in message
>> news:
>> >i would like to build a replacement domain at the school i work at but i
>> >only
>> > have 1 LAN, can i simply exclude some DHCP address from the current
>> > domain
>> > and place the domain on the said IP addresses to build and test the new
>> > domain?
>>
>>
>>

If it were me I would build and test on a different tcp/ip
subnet until you are ready to have migrate but you can
have them on the same.

"john" <(E-Mail Removed)> wrote in message news:
> Thanks Michael
>
> do i simply use this address range and do not need to change any other
> variables or would i get confictions if i just plug the new domsin in
> using
> this 254 ip range? would DHCP etc conflict?
>
> "Michael Giorgio" wrote:
>

There is no relationship to the LAN Topology/IP Scheme and a Windows Domain.
You can have many domains on one IP Segment,....and you can have many IP
Segments on one Domain,...there is just simply no relationship between the
two.

--
Phillip Windell
www.wandtv.com

The views expressed, are my own and not those of my employer, or Microsoft,
or anyone else associated with me, including my cats.
-----------------------------------------------------

"Anthony" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> John,
> You can use the same network address range, and the same gateway, but you
> need to assign clients a different DNS server. The reason it needs to be
> different is that:
> - it will be an AD integrated zone on the DC
> - clients need to register their address in their DNS zone. The default
> security would and should prevent them registering in another domain's DNS
> zone.
> How you do that depends on your circumstances.
> Anthony, http://www.airdesk.co.uk
>
>
> "john" <(E-Mail Removed)> wrote in message
> news53F3ED9-AE38-4B46-85D0-(E-Mail Removed)...
>> Thanks Michael
>>
>> do i simply use this address range and do not need to change any other
>> variables or would i get confictions if i just plug the new domsin in
>> using
>> this 254 ip range? would DHCP etc conflict?
>>
>> "Michael Giorgio" wrote:
>>
>>> Absolutely.
>>>
>>> "john.gardner" <(E-Mail Removed)> wrote in
>>> message
>>> news:
>>> >i would like to build a replacement domain at the school i work at but
>>> >i
>>> >only
>>> > have 1 LAN, can i simply exclude some DHCP address from the current
>>> > domain
>>> > and place the domain on the said IP addresses to build and test the
>>> > new
>>> > domain?
>>>
>>>
>>>
>
>

I would just run the test domain in its own IP subnet using static
addresses, and forget about DHCP at this stage. You current domain still
works as before and won't see the traffic on the LAN for the "other" domain.
It is not a big deal to sort out the DHCP thing later.

Give the new server a static IP in the new subnet, run dcpromo and let it
configure DNS. Set up accounts etc. When you want to add a client to this
domain, manually configure it to be in the same IP subnet as the new DC and
set it to use the new DC for DNS, then join it to the domain.


"Michael Giorgio" <(E-Mail Removed)> wrote in message
news:u$(E-Mail Removed)...
> If it were me I would build and test on a different tcp/ip
> subnet until you are ready to have migrate but you can
> have them on the same.
>
> "john" <(E-Mail Removed)> wrote in message news:
>> Thanks Michael
>>
>> do i simply use this address range and do not need to change any other
>> variables or would i get confictions if i just plug the new domsin in
>> using
>> this 254 ip range? would DHCP etc conflict?
>>
>> "Michael Giorgio" wrote:
>>
>
>

You can... but I would do the following


1. Setup a VLAN if your switches support it.

2. Assign a different IP range.. eg new network 192.168.1.1 old
network 10.10.10.1


it should work.


On Fri, 19 Oct 2007 02:28:18 -0700, john.gardner
<(E-Mail Removed)> wrote:

>i would like to build a replacement domain at the school i work at but i only
>have 1 LAN, can i simply exclude some DHCP address from the current domain
>and place the domain on the said IP addresses to build and test the new
>domain?