Replication between DC in different sites

[Nsi]

I have two DC of the domain company.lan. The first DC in the domain is also
the GC . My need is to place the additional DC into another site of the
company, called branch site and make it the local DC for that LAN. The first
DC will stay on the big site, called main site.

There will be a dedicated WAN link between sites.

My project

main site
First DC with LAN and 50 client
Subnet 192.168.0.x
First DC 192.168.0.1

branch site
Additional DC with 10 client
Subnet 192.168.1.x
Additional DC 192.168.1.1

Local clients of branch site have to access and authenticate themselves to
their local DC (that will be a GC as well)

Now my questions

I had to setup the additional DC working at the main site. So, my additional
DC has IP of the main subnet (192.168.1.2). I also have installed a DNS
server on it. It has the first DC as primary DNS server and itself as
secondary.

How to change the IP address of the additional DC in order to place it onto
branch site ? Well, I know how to change IP config, but what will be the
real impact in the Active directory integrated DNS ?

I need to create an intersite replication between the two sites.
Actually in the Active Directory Sites and Services I have only one site
(after DCPROMO of both server in company.lan) containing both server.

Do I need to create another site object and move to it the additional DC ?
Do I need to create a link object ?
Do I need to create a subnet object ?

Thanks a lot

Sergio

 

[David Adner]

Assuming you're trying to reduce traffic over the WAN link, you'll want
to create two Sites.

Do I need to create another site object and move to it the additional DC ?

Yes, create the new Site and move the DC into it.

Do I need to create a link object ?

With just two sites, the DEFAULTSITELINK is probably sufficient.

Do I need to create a subnet object ?

Yes, you should create subnet objects for all of your subnets and assign
them to the appropriate Sites. This way, workstations on the various
subnets will join their local Sites instead of possibly pointing to the
other Site (which would be less optimal and increase WAN traffic).

How to change the IP address of the additional DC in order to place it onto
branch site ? Well, I know how to change IP config, but what will be the
real impact in the Active directory integrated DNS ?

Make sure DC2 is pointing to a DNS server (probably DC1) that has
dynamic updates enabled. When you change DC2's IP, it will reregister
with DNS and should update its records appropriately.

 

[Jimmy Andersson [MVP]]

Create a second site and subnets. If you don't create a separate site you
will be replicating every 5 minutes. If you have separate sites you'll be
able to control replication.

Regards,
/Jimmy

 

[Simon]

I would set the second DC up on the correct IP address to
start with, it will save a lot of hassle and potential for
disater ! get a router or down load a linux one that will
allow you to make a spare PC with two Nics a router.

Setup seperate sites as suggested by others to avoid
replication issues.

Best of luck

Simon