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In school we set our 2003 server systems to act as DNS servers and we did absolutley no configuring and DNS works great...now the teacher wants us to tell him how DNS can possibly work "out of the box" with no configuring at all. i am stressed out over this because ive submitted multiple answers to him and all have been rejected. i really need help ASAP. thanks.
You don't give enough information but if they are domain controllers and the DNS is configure to be Active Directory Integrated then it will get all of it's information via Active Directory replication.
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Yes, it is a domain controller and in active directory...could you go into more detail with the whole replication thing?
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If a computer is a domain controller in a domain, it replicates it's information with other DCs.(domain controllers). This is required so all DCs know about each other and share information about user accounts, passwords, policies, etc.
Active Directory Integrated zones in DNS is part of the information that is shared in this replication process. So, if you installed the DNS service on a DC in the domain, it would recieve the information about DNS from the first, or other, domain controllers in the domain.
So technically you wouldn't have to configure anything on the DNS server you installed other than to install the service. All the DNS configuration information would automatically be sent to it from another DC.
That help?
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Yes, that helps a little, but the only problem is that everyone in the class is a domain controller and we all installed DNS with no configuring. We all have to answer how DNS can still work. I wouldnt be getting the information from them because they are in the same position as i am...any other ideas??
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There are so many options here depending on how things were installed but the bottom line is this. One of those computers had to be the first DC in the domain. (Unless you are all seperate domains.) That computer is the one that DNS was configured on. There really isn't a lot to configure and it may have just been allowed to happen during dcpromo. It depends what sort of 'configuration' you are talking about. All required records would have been created during dcpromo. If you want to enable Forwarding or anything like that, it would have to be done manually. Once that DC was set up, it sent all the information to the other DCs. The client pcs are more than likely getting their DNS information via DHCP.
Did the instructor already have the domain created and you just added DCs to it? Or, did you all create your own seperate domain? If he had a domain set up, then he configured DNS or had the system do the basics automatically. If you configured seperate domains, then again, the minumum requirements would have been configured during DCPROMO. DNS is requird for AD so it has to be configured. It also depends on how DNS is set, but I'm assuming it is AD Integrated. What sort of answers did you give him?
Tell him that DCPROMO will create the required SRV records during the promotion. That will impress him. :)
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alright we are all separate domains and it is with AD...so the bottom line is DNS is working because everything it needed was done during DCPROMO?
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That pretty much sums it up yes. If he is asking why DNS works without configuration on your part, then he must be talking about hte very basic functions of DNS. This would be the proper records needed for replication and finding serives (SRV records) and that sort of thing. That will be done automatically during DCPROMO. But clients will still have to be configured so for them, DNS will not be working. If you want anything like DNS Forwarding, Reverse Zones, etc, you'll have to do that manually.
Have you given him this answer yet?
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Well Glen, what's the number? He didnt accept the answer...again. I think i'm going to go crazy. Here's exactly what I handed in:
Even though I did not perform any configurations on my DNS server, it can still successfully resolve names for any site on the internet. This is possible because Windows Server 2003 allows DCpromo to configure DNS automatically. DCpromo will update client DNS settings if, there is a single network connection, the preferred and alternate DNS settings match on all interfaces, or if DNS settings exist only on one connection. The auto configuration will begin by first querying DNS server specified in network settings. The root hints will be updated using the largest set found. The forwarders will be configured with the current preferred and alternate DNS servers. DNS settings are configured with 127.0.0.1 and then all previous preferred and alternate DNS servers are configured.
His reply was, warm but not definitive.
How about that?
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You've added a few things here from your original post. I wasn't referring to Internet name resolution, I was talking about name resolution for the AD. If you are talking about Internet DNS then that is a whole other topic.
DCPROMO will not update client DNS settings. It will only create required records for the DNS server. Remember I said the clients have to be configured manually or via DCHP.
The Preferred DNS server should not be set to 127.0.0.1, it should be set to it's own IP address (usually).
Sorry to change the rules but if you are talking about DNS for Internet resolution that is a completely different configuration than DNS for only AD.
I also briefly mentioned Forwarding. Forwarding will not be set up automatically. It must be set manually, and a DNS server will have Forwarding disabled if it contains a root zone in DNS.
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