Reverse zone with nondefault mask

According to
http://technet2.microsoft.com/window....mspx?mfr=true


Subnetted reverse lookup zones
Default subnet masks (which have either a value of 0 or 255 used in each
of the four octets of the masked value) are assumed by the DNS when
configuring a new reverse lookup zone. If necessary, you can use custom
subnetting to adjust the subnet mask value to a nondefault length.
Subnetted reverse lookup zones are supported when using the Advanced
view setting available through Microsoft Management Console (MMC) and
the DNS. This allows you to add and configure a reverse lookup for an IP
network address that uses nondefault subnet mask lengths, such as
255.255.248.0, which has a nondefault subnet value of 248 in the third
octet.


However, even after setting Advanced view, the New Zone wizard still
does not add any way to configure the new reverse zone for a specific mask.

What am it missing?

Max

Read inline please.

In news:(E-Mail Removed),
(E-Mail Removed)am <(E-Mail Removed)> typed:
> According to
> http://technet2.microsoft.com/window....mspx?mfr=true
>
>
> Subnetted reverse lookup zones
> Default subnet masks (which have either a value of 0 or 255 used in
> each
> of the four octets of the masked value) are assumed by the DNS when
> configuring a new reverse lookup zone. If necessary, you can use
> custom
> subnetting to adjust the subnet mask value to a nondefault length.
> Subnetted reverse lookup zones are supported when using the Advanced
> view setting available through Microsoft Management Console (MMC) and
> the DNS. This allows you to add and configure a reverse lookup for an
> IP
> network address that uses nondefault subnet mask lengths, such as
> 255.255.248.0, which has a nondefault subnet value of 248 in the third
> octet.
>
>
> However, even after setting Advanced view, the New Zone wizard still
> does not add any way to configure the new reverse zone for a specific
> mask.

When you use a sub-netted reverse lookup zone, you have to select the option
to create a zone by a specific name.

I'm hoping I can make it more understandable than,
http://support.microsoft.com/default...b;en-us;174419, because it
can be done without actually editing the zone file directly, and can
therefore be AD Integrated.
It actually takes two zones.
For example, if you have a subnet ID of 192.168.0.208/29 Create a reverse
lookup zone of 208.0.168.192.in-addr.arpa, on the DNS server you are
delegating to, then create PTRs for
209 PTR myserver.domain.com
210 PTR anotherserver.domain.com
Continue on for 211, 212, and 213, each with the name you need it to answer
for.

But in order for this zone to work, you need a parent reverse zone that
every machine will find, that has the CNAME delegations. In my sample
subnet, you need a zone named 0.168.192.in-addr.arpa, and create a new
delegation named 208, with the NS records for the servers with the
208.0.168.192.in-addr.arpa zone. Then in this same zone, create CNAMES like
this:
209 CNAME 209.208.168.192.in-addr.arpa
210 CNAME 210.208.168.192.in-addr.arpa
And so on....


Then nslookup answers like this
C:\>nslookup 192.168.0.209
Server: mydns.domain.net
Address: 192.168.202.220

Name: myserver.domain.com
Address: 192.168.0.209
Aliases: 209.0.168.192.in-addr.arpa


--
Best regards,
Kevin D. Goodknecht Sr. [MVP]
Hope This Helps

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