Two domian with same name and ip on different location

TEC-Geek 1

I have two domain controllers XYZ.COM with same name and same ip and same forest level on two different locations LOC1 and LOC2.
my laptop joined the XYZ.COM on LOC1. now i moved to LOC 2 so can i use the resources of XYZ.COM on LOC 2 just simply join the network or i have to rejoin again the XYZ.COM on LOC 2.

2 answers

cthivierge 4,056 Reputation points

2021-09-22T20:38:31.767+00:00

So, you have 2 different domains in 2 different locations. The 2 domains have the same name and DC's have the same name as well as the same IP address.

I assume the 2 domains are not able to communicate between them. Am i right ?

If so, what you try to accomplish will not work.

The reason is because the client computer will have a secure connection with a domain. If the client computer is moving to the other site (other domain), there is no secure connection with this domain si it's not going to work.

But... why you want to build 2 domains with the same name and same IP range ?

It would be better to create only 1 domain with 2 sites and each site is having it's own subnet

hth
Please sign in to rate this answer.

1 person found this answer helpful.
TEC-Geek 1 Reputation point

2021-09-22T20:50:28.117+00:00

Thanks for you reply but the scenario is i have two domains on two locations with same name and IP range. i just want to know what are the technical issues i will face when in join the network on second location. Can i have to re-join the domain again on LOC 2. what will be the consequences while i am using the same DNS.

TEC-Geek 1 Reputation point

2021-09-22T20:51:21.567+00:00

This is only for the knowledge gathering i am planning for different scenarios

Dave Patrick 426.1K Reputation points MVP

2021-09-22T20:53:09.297+00:00

Yes, that's correct. You'll need to join the other domain. Even though the names are the same the underlying domain GIUDs are different.

--please don't forget to upvote and Accept as answer if the reply is helpful--

TEC-Geek 1 Reputation point

2021-09-22T20:54:37.33+00:00

Do you have any reference documents that this scenario will not work ???

TEC-Geek 1 Reputation point

2021-09-22T20:55:35.68+00:00

Thanks for your reply do you have any technical reference document ??

TEC-Geek 1 Reputation point

2021-09-22T20:56:59.403+00:00

What about the user profiles and the GPO ???

Dave Patrick 426.1K Reputation points MVP

2021-09-22T20:58:06.83+00:00

Please run
Get-ADDomain
from both domains, then compare the GUIDs. Assuming no cloning, etc. they will be different.

--please don't forget to upvote and Accept as answer if the reply is helpful--

cthivierge 4,056 Reputation points

2021-09-22T21:06:28.817+00:00

Domain_Site_1 will have it's own GUID, let say GUID123
Domain_Site_2 will have it's own GUID, let say GUID456

When your computer join Domain_Site_1, the computer account in AD will have a GUID that will start with GUID123-
When your computer join Domain_Site_2, the computer account in AD will have a GUID that will start with GUID456-

Because they are having different GUID, the security is also different.

I will not describe all steps of the logon process but one thing you must know is if the GUID is not the same, the account is not the same even if the computer account has the same name or event the domain name is the same.

So no it will not be a valid solution

Dave Patrick 426.1K Reputation points MVP

2021-09-23T13:27:23.78+00:00

Just checking if there's any progress or updates?

--please don't forget to upvote and Accept as answer if the reply is helpful--
Sign in to comment
Dave Patrick 426.1K Reputation points MVP

2021-09-22T20:44:31.31+00:00

You'll need to join the other domain. Even though the names are the same the underlying domain GIUDs are different.

--please don't forget to upvote and Accept as answer if the reply is helpful--
Please sign in to rate this answer.

1 person found this answer helpful.

0 comments No comments
Sign in to comment