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DNS in subdomains

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8 replies

by ikab

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I am trying to set up DNS on my Windows NT/2000 network. I have created a zone (abc.com) and 2 subdomains (test1.abc.com and test2.abc.com). The problem I have is outlined below:
I have a W2K PC set up with test1.abc.com as its DNS suffix, when I try to ping a server which is under the test2.abc.com subdomain I do not get a response.
How should I set up the DNS server to allow clients in either domain to resolve names that are on the other subdomain.

8 replies

by ins413

You have several options. You can set up the primary zones (or AD Intergrated if you wish) for the sub domains on the root server. This seems to work well when using different trees in the same forest. You can also set up a primary zone on the DCfor each domain and create a secondary on the opposite DC. Meaning a primary zone for test1.abc.com on test1 DC, and a secondary zone for on test2.abc.com on the same server. Do the same on the other DC. Make a primary zone for test2.abc.com on test2 DC and a secondary zone for test1.abc.com on the same server. So long as they are on the same subnet (or IP's can be resolved) there shouldn't be a problem. You can always change these zones to AD Intergrated when all your testing is done. Both of these solutions have worked well for me, hopefully they will for you too. Good Luck

Norm

by ikab

I am not using AD my DC are still NT, also I aonly want to use one server to resolve all my DNS names.

by shanghai sam

The question is when you say NT4/Win200 are you running ActiveDirectory and in what mode (native or mixed).If implementing on an existing mixed mode Infrastructure you will use traditional zones. ie not integrated into AD for replication etc. Youwill be setting up therefor a Primary zone. You can only set up one but it replicate to any number of secondary zones. Will be read only in secondary zones (will not replicate from it) This is called a single master as opposed to multi. You can later upgrade to AD zone if you can. you created abc.com you mean have a root domain with 2 sub domains? If you have simple network 1 site only 2 subnets you only need 1 DNS and 1 primary zone You could put asecondary for fault tolerance on another server if you have one running WINS or DHCP ..
Now
1.Assign a static ip address to the DNS server
2.Install the DNS service
3.Now create the zone-forward (click forward lookup type in the wizard..use abc.com as zone name)
4.Now create the reverse lookup (click reverse lookup type in wizard put the ip address.
5. Makthe the DNS server the master for the zone MAster servers page for the Zone Wizard...put ion IP address and click add. Makes it Authoriatative for zone.
6. NOw create sub domains in the existing zone. click on the zone abc.com you want to create it under right click "new domain" now put test1 in then repeat for test2.
7.Delegate Authority expand the forward then revers zones click on the name of the domain you want to delegate follow wizard.. you can delegate authority to any server in trusted by your.
Now you need to consider how your new DNS server will get updates. Dynamic?

by ndewhall

The question is when you say NT4/Win200 are you running ActiveDirectory and in what mode (native or mixed).If implementing on an existing mixed mode Infrastructure you will use traditional zones. ie not integrated into AD for replication etc. Youwill be setting up therefor a Primary zone. You can only set up one but it replicate to . Will be read only in secondary zones (will not replicate from it) This is called a single master as opposed to multi.
1.Assign a static ip address to the DNS server
2.Install the DNS service
3.Now create the zone-forward (click forward lookup type in the wizard..use abc.com as zone name)
4.Now create the reverse lookup (click reverse lookup type in wizard put the ip address.
5. Makthe the DNS server the master for the zone MAster servers page for the Zone Wizard...put in IP address and click add. Makes it Authoriatative for zone.
6. NOw create sub domains in the existing zone. click on the zone abc.com you want to create it under right click "new domain" now put test1 in then repeat for test2.
7.Delegate Authority expand the forward then revers zones click on the name of the domain you want to delegate follow wizard.. you can delegate authority to any server in trusted by your.Now you need to consider how your new DNS server will get updates. Dynamic? 98,NT Me cant You work that one.
You will also have to give thought about sharing the internets naming space. If so you need to give thought to how you will provide access. NAT, PROXY.
Now check that all computers all being registered on the DNS.

by shanghai sam

Specifically...Put your two subdomains under 1 forward lookup zone on 1 DNS server which is Authoritative for that zone. Therefore Single MAster.You create subdomans to better organise your zone.
They usually relate toGeographical or Departmental division. If geographical you will need another DNS. And instaed of having one zone with 2 subdomains you would have multiple
zones being hosted on more than one DNS server. So lots to think about..I think you should even ask your self why do you want 2 domains anyway. 1 domain is all good in most situations. If you are planning a full migration to 2000 .
And lastly the most important thing of all. If you are sharing you namespace with the net you dont configue your DNS with a root zone.. You only configure a root zone ifintranet not connected to net or through a NAt.Or connected through a proxy. A . is a root zone by the way
Needs some other DNS servers on the net in it's root hint tab under properties. Your DNS will also need to a forwarder. What it cant do send it on ..

your test2 across a roputer if so you will need atleast one DHCL per subnet or realy agents ( or use a RFC 1542 compliant router to forward DHCP broadcasts.

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