Hi,

I am after some general advice on AD/DNS (Win2003 Native) configuration. In
particular reverse DNS zones.
Forgive me if I get the numbers wrong - I don't have the actual numbers at
hand. I am not sure
I think the term might be called "supernetting"?

Anyway supose I have a signle DNS server that serves the following reverse
zones:

192.168.50.1 / 24
192.168.60.1 / 24
192.168.70.1 / 24

Now does it make sense to create 3 seperate zones:

0.50.168.192.in-addr.arpa. , 0.60.168.192.in-addr.arpa. ,
0.70.168.192.in-addr.arpa.

I heard that I should create a zone for 192 then a sub for 168 under that
etc etc
or maybee it starts at the other end. Could somebody me out on what is
the best
approach and why?

URL: http://support.microsoft.com/kb/174419 -> I think in an example.

Thanks,

Ward.

In news:7CB7501F-D330-4008-8008-B2AA12E17282@microsoft.com,
Ward <Ward@discussions.microsoft.com> stated, which I commented on below:
> Hi,
>
> I am after some general advice on AD/DNS (Win2003 Native)
> configuration. In particular reverse DNS zones.
> Forgive me if I get the numbers wrong - I don't have the actual
> numbers at hand. I am not sure
> I think the term might be called "supernetting"?
>
> Anyway supose I have a signle DNS server that serves the following
> reverse zones:
>
> 192.168.50.1 / 24
> 192.168.60.1 / 24
> 192.168.70.1 / 24
>
> Now does it make sense to create 3 seperate zones:
>
> 0.50.168.192.in-addr.arpa. , 0.60.168.192.in-addr.arpa. ,
> 0.70.168.192.in-addr.arpa.
>
> I heard that I should create a zone for 192 then a sub for 168 under
> that etc etc
> or maybee it starts at the other end. Could somebody me out on
> what is the best
> approach and why?
>
> URL: http://support.microsoft.com/kb/174419 -> I think in an example.
>
> Thanks,
>
> Ward.

Supernetting is a methodoligy to combine multiple subnets into one subnet so
all machines on the previous multiple subnets will now be on one larger
subnet.

For reverse zones, you can either create the three zone for each subnet as
such (notice when we describe a network, we use a .0 and not a .1 as you
depicted):
192.168.50.0 / 24
192.168.60.0 / 24
192.168.70.0 / 24

Or you can simply create a 192.168.x.x zone and all the above and any others
using 192.168.0.0 you create will all register into it. You will see 50, 60
and 70 appear automatically as machines register.

That article is more ful when creating subnets of a network (not the
whole network such as 192.168.50.0/24) for delegation, such as delegating
192.168.50.32/27 (192.168.50.32 - 192.168.50.63) to another DNS server. In
your case, it doesn't apply.

It's up to you how you want to procede.

--
Ace
Innovative IT Concepts, Inc (IITCI)
Willow Grove, PA

This posting is provided "AS-IS" with no warranties or guarantees and
confers no rights.

Ace Fekay, MCSE 2003 & 2000, MCSA 2003 & 2000, MCSE+I, MCT, MVP
Microsoft MVP - Directory Services
Microsoft Certified Trainer

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