DNS Subdomain Vs Delegation

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In a production environment you would simply create a
subdomain without delegation. The only exception that I
have ever seen, one that Microsoft implemented in Server
2003, is the automatic local delegation of the _MSDCS
namespace. They did that because there was a problem when
domain controllers in other domains in a forest would try
to get updates about all the domain controllers in the
forest using the server type or by GUID.

Check out this link for some additional detail on DNS,
delegation, and secondary zones in Windows Server 2003

http://tinyurl.com/4jv8y


>-----Original Message-----
>Hello,
>
>can anybody tell me what is the difference between
>creating a subdomain or a delegation to a primary zone on
>the same server ? What I mean is:
>
>domain: example.com on server1 (primary zone)
>
>1) create subdomain "dev.example.com" on server1.
>2) create new primary zone "dev.example.com" on server1.
>Create delegation under "example.com" on server1 that
>points to itself. (windows does this automatically if I
>create a new zone that has the same root domain as a
>primary zone)
>
>As far as I understand, the only difference is that in
>the second example I can replicate the domain and the
>subdomain independently when using standard zone
>transfers. What do you usually do in a production
>environent ?
>
>Thank you.
>.
>
.



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