NSLOOKUP unable to resolve domain name

Hi,

We have total 24 dc's (domain contollers with AD and DNS integrated)
and their naming conventions are as follows: uk.ab.yz.com

all the above dc's are child dc's

and also we have other child dcs's (naming conventions as ca.ab.yz.com
etc.....)

when i try to do nslookup for ca.ab.yz.com from uk.ab.yz.com unable to
resolve the name (>nslookup ca
Server: dc01.uk.ab.yz.com
Address: 10.210.1.1

DNS request timed out.
timeout was 2 seconds.
*** Request to dc01.uk.ab.yz.com timed-out)

Please help me to resolve this issue.

advance thanks.

"Amarnath" <> wrote in message
news:9D4D2721-C9A2-46A5-ABB8-...
> Hi,
>
> We have total 24 dc's (domain contollers with AD and DNS integrated)
> and their naming conventions are as follows: uk.ab.yz.com
>
> all the above dc's are child dc's
>
> and also we have other child dcs's (naming conventions as ca.ab.yz.com
> etc.....)
>
> when i try to do nslookup for ca.ab.yz.com from uk.ab.yz.com unable to
> resolve the name (>nslookup ca
> Server: dc01.uk.ab.yz.com
> Address: 10.210.1.1
>
> DNS request timed out.
> timeout was 2 seconds.
> *** Request to dc01.uk.ab.yz.com timed-out)
>
> Please help me to resolve this issue.
>
> advance thanks.


That's because when you input "ca," nslookup relies on the operating
system's Search Suffix. So if you expect it to resolve something out of the
zone on ca.ab.yz.com, the Search Suffix "ab.yz.com" must exist.on the
machine you are running nslookup on.

This also indicates you are trying to resolve the LdapIpAdress of the child
domain ca.ab.yz.com and should return an IP for each DC in that domain.

In a multi domain forest, the best way to setup your DNS resolution
infrastructure is the use of Parent-Child delegation, then set a forwarder
from the child domain to the parent, and for all other child domains, to set
a Search Suffix for the other child domains that you want them to be able to
resolve.

I hope that makes sense and helps.

--
Ace

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

Please reply back to the newsgroup or forum to benefit from collaboration
among responding engineers, and to help others benefit from your resolution.

Ace Fekay, MCT, MCSE, MCSA 2003 & 2000, MCSA Messaging
Microsoft Certified Trainer

http://twitter.com/acefekay

For urgent issues, you may want to contact Microsoft PSS directly. Please
check http://support.microsoft.com for regional support phone numbers.

Thanks for your reply.

"Ace Fekay [MCT]" wrote:

> "Amarnath" <> wrote in message
> news:9D4D2721-C9A2-46A5-ABB8-...
> > Hi,
> >
> > We have total 24 dc's (domain contollers with AD and DNS integrated)
> > and their naming conventions are as follows: uk.ab.yz.com
> >
> > all the above dc's are child dc's
> >
> > and also we have other child dcs's (naming conventions as ca.ab.yz.com
> > etc.....)
> >
> > when i try to do nslookup for ca.ab.yz.com from uk.ab.yz.com unable to
> > resolve the name (>nslookup ca
> > Server: dc01.uk.ab.yz.com
> > Address: 10.210.1.1
> >
> > DNS request timed out.
> > timeout was 2 seconds.
> > *** Request to dc01.uk.ab.yz.com timed-out)
> >
> > Please help me to resolve this issue.
> >
> > advance thanks.
>
>
> That's because when you input "ca," nslookup relies on the operating
> system's Search Suffix. So if you expect it to resolve something out of the
> zone on ca.ab.yz.com, the Search Suffix "ab.yz.com" must exist.on the
> machine you are running nslookup on.
>
> This also indicates you are trying to resolve the LdapIpAdress of the child
> domain ca.ab.yz.com and should return an IP for each DC in that domain.
>
> In a multi domain forest, the best way to setup your DNS resolution
> infrastructure is the use of Parent-Child delegation, then set a forwarder
> from the child domain to the parent, and for all other child domains, to set
> a Search Suffix for the other child domains that you want them to be able to
> resolve.
>
> I hope that makes sense and helps.
>
> --
> Ace
>
> This posting is provided "AS-IS" with no warranties or guarantees and
> confers no rights.
>
> Please reply back to the newsgroup or forum to benefit from collaboration
> among responding engineers, and to help others benefit from your resolution.
>
> Ace Fekay, MCT, MCSE, MCSA 2003 & 2000, MCSA Messaging
> Microsoft Certified Trainer
>
> http://twitter.com/acefekay
>
> For urgent issues, you may want to contact Microsoft PSS directly. Please
> check http://support.microsoft.com for regional support phone numbers.
>
>

"Amarnath" <> wrote in message
news:1B4D3A68-1654-4043-9646-...
> Thanks for your reply.

You are welcome.

Did it help resolve the issue?

Ace