reverse lookup issue

Hi,

When I execute dcdiag /test:dns /dnsforwarders /v.
Please find the below details:

Summary of test results for DNS servers used by the above domain controllers:

DNS server: 10.176.0.17 (<name unavailable>)
All tests passed on this DNS server
This is a valid DNS server.
Name resolution is funtional. _ldap._tcp SRV record for the
forest root domain is registered

DNS server: 10.196.2.30 (<name unavailable>)
All tests passed on this DNS server
This is a valid DNS server.
Name resolution is funtional. _ldap._tcp SRV record for the
forest root domain is registered

DNS server: 10.197.0.23 (<name unavailable>)
All tests passed on this DNS server
This is a valid DNS server.
Name resolution is funtional. _ldap._tcp SRV record for the
forest root domain is registered

DNS server: 10.208.49.66 (<name unavailable>)
All tests passed on this DNS server
This is a valid DNS server.
Name resolution is funtional. _ldap._tcp SRV record for the
forest root domain is registered

DNS server: 10.216.163.40 (<name unavailable>)
All tests passed on this DNS server
This is a valid DNS server.
Name resolution is funtional. _ldap._tcp SRV record for the
forest root domain is registered

DNS server: 10.216.197.213 (<name unavailable>)
All tests passed on this DNS server
This is a valid DNS server.
Name resolution is funtional. _ldap._tcp SRV record for the
forest root domain is registered

DNS server: 10.216.213.39 (<name unavailable>)
All tests passed on this DNS server
This is a valid DNS server.
Name resolution is funtional. _ldap._tcp SRV record for the
forest root domain is registered

DNS server: 10.216.217.39 (<name unavailable>)
All tests passed on this DNS server
This is a valid DNS server.
Name resolution is funtional. _ldap._tcp SRV record for the
forest root domain is registered .


I just wanted to know why the name unavailable is appearing side to dns
server.

Thanks in advance.

Have you implmenented reverse lookup zones for the subnets where DNS servers
are residing on?

hth
Marcin

"Amarnath" <> wrote in message
news:211A455D-653B-4E1C-8D47-...
> Hi,
>
> When I execute dcdiag /test:dns /dnsforwarders /v.
> Please find the below details:
>
> Summary of test results for DNS servers used by the above domain
> controllers:
>
> DNS server: 10.176.0.17 (<name unavailable>)
> All tests passed on this DNS server
> This is a valid DNS server.
> Name resolution is funtional. _ldap._tcp SRV record for the
> forest root domain is registered
>
> DNS server: 10.196.2.30 (<name unavailable>)
> All tests passed on this DNS server
> This is a valid DNS server.
> Name resolution is funtional. _ldap._tcp SRV record for the
> forest root domain is registered
>
> DNS server: 10.197.0.23 (<name unavailable>)
> All tests passed on this DNS server
> This is a valid DNS server.
> Name resolution is funtional. _ldap._tcp SRV record for the
> forest root domain is registered
>
> DNS server: 10.208.49.66 (<name unavailable>)
> All tests passed on this DNS server
> This is a valid DNS server.
> Name resolution is funtional. _ldap._tcp SRV record for the
> forest root domain is registered
>
> DNS server: 10.216.163.40 (<name unavailable>)
> All tests passed on this DNS server
> This is a valid DNS server.
> Name resolution is funtional. _ldap._tcp SRV record for the
> forest root domain is registered
>
> DNS server: 10.216.197.213 (<name unavailable>)
> All tests passed on this DNS server
> This is a valid DNS server.
> Name resolution is funtional. _ldap._tcp SRV record for the
> forest root domain is registered
>
> DNS server: 10.216.213.39 (<name unavailable>)
> All tests passed on this DNS server
> This is a valid DNS server.
> Name resolution is funtional. _ldap._tcp SRV record for the
> forest root domain is registered
>
> DNS server: 10.216.217.39 (<name unavailable>)
> All tests passed on this DNS server
> This is a valid DNS server.
> Name resolution is funtional. _ldap._tcp SRV record for the
> forest root domain is registered .
>
>
> I just wanted to know why the name unavailable is appearing side to dns
> server.
>
> Thanks in advance.

Have you created the reverse zone? It doesn't appear that you have.

--
Paul Bergson
MVP - Directory Services
MCTS, MCT, MCSE, MCSA, Security+, BS CSci
2008, 2003, 2000 (Early Achiever), NT4
Microsoft's Thrive IT Pro of the Month - June 2009

http://www.pbbergs.com

Please no e-mails, any questions should be posted in the NewsGroup This
posting is provided "AS IS" with no warranties, and confers no rights.

"Amarnath" <> wrote in message
news:211A455D-653B-4E1C-8D47-...
> Hi,
>
> When I execute dcdiag /test:dns /dnsforwarders /v.
> Please find the below details:
>
> Summary of test results for DNS servers used by the above domain
> controllers:
>
> DNS server: 10.176.0.17 (<name unavailable>)
> All tests passed on this DNS server
> This is a valid DNS server.
> Name resolution is funtional. _ldap._tcp SRV record for the
> forest root domain is registered
>
> DNS server: 10.196.2.30 (<name unavailable>)
> All tests passed on this DNS server
> This is a valid DNS server.
> Name resolution is funtional. _ldap._tcp SRV record for the
> forest root domain is registered
>
> DNS server: 10.197.0.23 (<name unavailable>)
> All tests passed on this DNS server
> This is a valid DNS server.
> Name resolution is funtional. _ldap._tcp SRV record for the
> forest root domain is registered
>
> DNS server: 10.208.49.66 (<name unavailable>)
> All tests passed on this DNS server
> This is a valid DNS server.
> Name resolution is funtional. _ldap._tcp SRV record for the
> forest root domain is registered
>
> DNS server: 10.216.163.40 (<name unavailable>)
> All tests passed on this DNS server
> This is a valid DNS server.
> Name resolution is funtional. _ldap._tcp SRV record for the
> forest root domain is registered
>
> DNS server: 10.216.197.213 (<name unavailable>)
> All tests passed on this DNS server
> This is a valid DNS server.
> Name resolution is funtional. _ldap._tcp SRV record for the
> forest root domain is registered
>
> DNS server: 10.216.213.39 (<name unavailable>)
> All tests passed on this DNS server
> This is a valid DNS server.
> Name resolution is funtional. _ldap._tcp SRV record for the
> forest root domain is registered
>
> DNS server: 10.216.217.39 (<name unavailable>)
> All tests passed on this DNS server
> This is a valid DNS server.
> Name resolution is funtional. _ldap._tcp SRV record for the
> forest root domain is registered .
>
>
> I just wanted to know why the name unavailable is appearing side to dns
> server.
>
> Thanks in advance.

Your reverse lookup zone is missing thats why you are not able to resolve IP
to hostname.
Create a reverse lookup zone for the said IP subnet.
Create pointer record for the server and run dcdiag again

rahisuddin shah


"Amarnath" <> wrote in message
news:211A455D-653B-4E1C-8D47-...
> Hi,
>
> When I execute dcdiag /test:dns /dnsforwarders /v.
> Please find the below details:
>
> Summary of test results for DNS servers used by the above domain
> controllers:
>
> DNS server: 10.176.0.17 (<name unavailable>)
> All tests passed on this DNS server
> This is a valid DNS server.
> Name resolution is funtional. _ldap._tcp SRV record for the
> forest root domain is registered
>
> DNS server: 10.196.2.30 (<name unavailable>)
> All tests passed on this DNS server
> This is a valid DNS server.
> Name resolution is funtional. _ldap._tcp SRV record for the
> forest root domain is registered
>
> DNS server: 10.197.0.23 (<name unavailable>)
> All tests passed on this DNS server
> This is a valid DNS server.
> Name resolution is funtional. _ldap._tcp SRV record for the
> forest root domain is registered
>
> DNS server: 10.208.49.66 (<name unavailable>)
> All tests passed on this DNS server
> This is a valid DNS server.
> Name resolution is funtional. _ldap._tcp SRV record for the
> forest root domain is registered
>
> DNS server: 10.216.163.40 (<name unavailable>)
> All tests passed on this DNS server
> This is a valid DNS server.
> Name resolution is funtional. _ldap._tcp SRV record for the
> forest root domain is registered
>
> DNS server: 10.216.197.213 (<name unavailable>)
> All tests passed on this DNS server
> This is a valid DNS server.
> Name resolution is funtional. _ldap._tcp SRV record for the
> forest root domain is registered
>
> DNS server: 10.216.213.39 (<name unavailable>)
> All tests passed on this DNS server
> This is a valid DNS server.
> Name resolution is funtional. _ldap._tcp SRV record for the
> forest root domain is registered
>
> DNS server: 10.216.217.39 (<name unavailable>)
> All tests passed on this DNS server
> This is a valid DNS server.
> Name resolution is funtional. _ldap._tcp SRV record for the
> forest root domain is registered .
>
>
> I just wanted to know why the name unavailable is appearing side to dns
> server.
>
> Thanks in advance.