How join a Win 2K3 DC in 1 of 7 subnets under 3 Mikrotiks

RouterOS General
1

Following is our network topology. R1 & R2 are connected with R0 over fiber optic. VLSM of 172.17.0.0/16 was used for all networks. We are in the mid of transition eventually 192.168.0.0/24 will be replaced with 172.17.3.0/24.

On R0 we 've established static routes to all networks under stub network and hosts on both way can be pinged. All subnets also 've Internet and can access in-house developed LAMP application for the enterprise currently hosted in 192.168.0.0/24 subnet. DNS was setup on all rotuers to attend query from local networks behind the routers.

We intend to 've a separate subnet under central router R0 where we will 've all servers like LAMP server to host the in-house developed enterprise application. Besides, in there we wish to place a Windows 2003 Domain Controller that will authenticate & authorize users from XP hosts of all subnets.

We 've tried to join the DC from a host of 172.17.4.128/26 but it can’t find the DC (when attempted to join) though it can ping the server by name.

Pls. advise what measures we 've to take for implementing it? Thanks.
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2

Use the AD server as the DNS server. You have to have the _KRB _LDAP _etc, etc,etc being returned to the clients for them to join a domain. Especially a domain cross-subnet.

IMHO, you should have at least 2 DCs, preferably 3 in a network like this. Setup sites in AD, DFS replication, etc. with 2-3 DCs, you could have a pretty good level of redundancy. I dunno what the reliability of the links is and how many clients are at each endpoint, but that would factor into it as well.