DNS Server problem - nslookup DNS request timed out

Discussion in 'DNS Server' started by Andersen @ DK, Jan 30, 2009.

  1. Hi Ace

    (First, I changed ip addresses, because I had to move DHCP from bernardo to
    SRVDC01, I did this without any problem.)

    I run the commands and output is the same on all servers, if I point to
    SRVDC01 (192.168.1.6/192.168.1.4) or bernardo (192.168.1.210). If I use DC
    (192.168.1.3) as the secounddary ip address on SRVDC01 192.168.1.4 is missing
    from the output. The server DC is the only one thats not R2 upgraded. Is this
    the problem?

    Because of this I have now set all 3 DC's to use primary DNS SRVDC01
    192.168.1.6 and secondary bernardo 192.168.1.210

    Should I demount DC and reinstall it?

    Output below:

    U:\>nslookup
    Default Server: srvdc01.hamlet.dk
    Address: 192.168.1.6
    Server: srvdc01.hamlet.dk
    Address: 192.168.1.6

    Name: bernardo.hamlet.dk
    Address: 192.168.1.210
    Server: srvdc01.hamlet.dk
    Address: 192.168.1.6

    Name: bernardo.hamlet.dk
    Address: 192.168.1.210
    Server: srvdc01.hamlet.dk
    Address: 192.168.1.6

    Name: dc.hamlet.dk
    Address: 192.168.1.3
    Server: srvdc01.hamlet.dk
    Address: 192.168.1.6

    Name: dc.hamlet.dk
    Address: 192.168.1.3
    Server: srvdc01.hamlet.dk
    Address: 192.168.1.6

    Name: srvdc01.hamlet.dk
    Addresses: 192.168.1.4, 192.168.1.6
    Server: srvdc01.hamlet.dk
    Address: 192.168.1.6

    Name: srvdc01.hamlet.dk
    Addresses: 192.168.1.4, 192.168.1.6

    ---Using DC 192.168.1.3 as DNS below---
    Server: dc.hamlet.dk
    Address: 192.168.1.3

    Name: srvdc01.hamlet.dk
    Address: 192.168.1.6

    --Here the secoundary ip address from SRVDC01 is missing---
    Server: dc.hamlet.dk
    Address: 192.168.1.3

    Name: srvdc01.hamlet.dk
    Address: 192.168.1.6

    Below ipconfigs:
    U:\>ipconfig /all

    Windows IP Configuration

    Host Name . . . . . . . . . . . . : srvdc01
    Primary Dns Suffix . . . . . . . : Hamlet.dk
    Node Type . . . . . . . . . . . . : Hybrid
    IP Routing Enabled. . . . . . . . : No
    WINS Proxy Enabled. . . . . . . . : No
    DNS Suffix Search List. . . . . . : hamlet.dk

    Ethernet adapter LAN1:

    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : HP NC7782 Gigabit Server Adapter
    Physical Address. . . . . . . . . : 00-14-C2-62-93-27
    DHCP Enabled. . . . . . . . . . . : No
    IP Address. . . . . . . . . . . . : 192.168.1.4
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    IP Address. . . . . . . . . . . . : 192.168.1.6
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Default Gateway . . . . . . . . . : 192.168.1.1
    DNS Servers . . . . . . . . . . . : 192.168.1.3
     
    Andersen @ DK, Feb 20, 2009
    #21
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  2. In

    Hi Anderson,

    The nslookups look good.

    From what I see, Ididn't realize that SRVDC01 has two IPs. This can be a big
    problem with Active Directory functionality on the DC, as well as providing
    inconsistenc results with lookups. I didn't realize that until now. I would
    suggest to remove the extra IP address to insure DC functionality. It is a
    known technical issue with domain controllers that are either multihomed or
    that have more than one IP on an interface. I can provide you technical KB
    articles that explain this, but one engineer to another, please take my word
    on this.

    Also, I don't think R2 has anything to do with this issue. It doesn't matter
    the OS version that AD is running on when it comes to multihoming and Active
    Directory domain controllers.

    Ace
     
    Ace Fekay [Microsoft Certified Trainer], Feb 20, 2009
    #22
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  3. Hi Ace

    I removed 2 servers and made a new, reusing the IP's wating a few days.
    I have now 2 DC's:

    SRVDC01 192.168.1.6
    SRVDC02 192.168.1.4

    Looks like its working :) Thanks.

    Andersen
     
    Andersen @ DK, Mar 2, 2009
    #23
  4. In
    Good to hear!

    Multiple IPs on a DC is trouble. There are ways to force a DC to work with
    them, but it is not recommended. Glad to hear you went with this solution.

    Please post back if you have any other questions.

    Ace
     
    Ace Fekay [Microsoft Certified Trainer], Mar 3, 2009
    #24
  5. Hi Ace

    It looks like I still have some problem, see below paste from NETDIAG, and
    let me know what you think.

    Thanks for your help.

    Andersen

    NETDIAG:
    ---------------------
    Testing the WINS server
    LAN1
    Sending name query to primary WINS server 192.168.1.4 - Passed
    Sending name query to secondary WINS server 192.168.1.6 - Passed
    Gathering Winsock information.
    Testing DNS
    [FATAL] Could not open file C:\WINDOWS\system32\config\netlogon.dns for
    reading.
    [FATAL] Could not open file C:\WINDOWS\system32\config\netlogon.dns for
    reading.
    [FATAL] No DNS servers have the DNS records for this DC registered.
    Testing redirector and browser... Failed
    Testing DC discovery.
    Looking for a DC
    Looking for a PDC emulator
    Looking for an Active Directory DC
     
    Andersen @ DK, Mar 3, 2009
    #25
  6. Cannot open netlogon.dns? Try this:

    Rename the system32\config\netlogon.dns and system32\config\netlogon.bak
    files adding a ".old" to the end of them. Then run the following:

    ipconfig /registerdns
    net stop netlogon
    net start netlogon

    Check the event viewer for any errors in any of the logs. Check DNS to make
    sure the SRV registered properly. Also make sure there is only one "(same as
    parent)" record entered for this DC.

    Then re-run netdiag and then dcdiag, in that order, with the /fix switch:
    netdiag /v /fix
    dcdiag /v /fix

    Ace
     
    Ace Fekay [Microsoft Certified Trainer], Mar 4, 2009
    #26
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