Multitier DNS Setup Questions 1

[zeveck]

I am setting up a testing lab. The lab includes a developer network and two lab networks. At current all of the machines on all three networks can successfully ping each other by IP. But I am having a lot of trouble getting DNS working.

Developer network:

Developers are connected to the 192.168.80.x network. I am running dns.devnet.example.com at 192.168.80.11, which provides DNS/DHCP for "devnet.example.com".

Lab networks:

The first is on the 192.168.72.x network. The DC & DNS are at 192.168.72.20, which are covering "lab1.devnet.example.com".

The second is on the 192.168.76.x network. The DC & DNS are at 192.168.72.20, which are covering "lab2.devnet.example.com".

I am trying to make it so that a developer can connect a machine to the 192.168.80.x network and join either the lab1.devnet.example.com or lab2.devnet.example.com domain.

1) At current I get told that a domain controller cannot be contacted for either domain. I am not sure how to proceed. What am I doing wrong?

2) Also, what is the appropriate way of configuring the network such that those with access only to dns.devnet.example.com will correctly resolve names in lab1.devnet.example.com and lab2.devnet.example.com?

Should I put dns.subdomain.example.com as a root hint on subdomain.example.com? as a forwarder? What is the difference? Or should I setup the DHCP to dole out a 192.168.72.20 and 192.168.76.20 as secondary DNS servers? Or is it something completely different?

Right now I kinda have this second part working...but only because I manually added the Host records to the devnet DNS server.

 

[jyorgey]

You need to create two NS records in the devnet.examle.com Zone to delegate lab1 and lab2 child domains to the appropriate servers.
1) lab1 IN NS dns.lab1.devnet.example.com.
2) lab2 IN NS dns.lab2.devnet.example.com.