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Active Directory and DNS

By kdyck ·
I am setting up a small test network to study for the MCSE. I am following MS Technet as to how to install AD. When I install AD, the wizard tells me that everything is installed correctly and give me the option to reboot. after rebooting, I also followed the documented guidelines for making sure everything did get installed that needed to. During installation I chose to install my own DNS server on the DC. When I check the DNS database, I have all of the necessary folders (_ldap _tcp _udp _msdcs) and verified that the DC is listed in the OU Domain Controllers. I have the primary DNS server IP in the Network Configuration configured to be the same as the IP of the DC since it is the DNS server, and the DNS suffix is the name that I chose for my domain. This is my issue. When I run NSLOOKUP, my Default Server is UNKNOWN. However it displays the correct IP address for the DNS server. Because of this I cannot add child domains to the root domain. (the domain does not exist..) the IP address I chose to use for the DNS/DC is 192.168.0.1 and the Subnet Mask is 255.255.255.0. I have even configured a reverse lookup zone as (0.255.255.255.in-addr.arpa) *Both of my zones are AD integrated and support dynamic update. Can anyone tell me whyNSLOOKUP is failing and why I cannot add child domains??

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Active Directory and DNS

by timwalsh In reply to Active Directory and DNS

Your reverse lookup zone is probably the problem.

If your network ID is 192.168.0.x, your reverse lookup zone should be 0.168.192.in-addr.arpa. When you create the reverse lookup zone, you enter your netwrok number (in your case, the first 3 octets of the IP address), not the subnet mask.

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Active Directory and DNS

by kdyck In reply to Active Directory and DNS

thanks!!! This did the trick

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Active Directory and DNS

by kdyck In reply to Active Directory and DNS

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