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Thread: Ping fails to resolve name but nslookup OK

  1. #1
    AXJ Guest

    Ping fails to resolve name but nslookup OK

    Hi all

    We have a very weird DNS resolver issue. Our DNS servers are running on
    Windows 2003 Servers. We have Vista and WinXP clients. Occasionally, our
    clients can't resolve internal server DNS names with ping but nslookup would
    be OK.

    Any idea what's possibly the cause?

    Thanks.

    AxJ



  2. #2
    mformarty Guest

    RE: Ping fails to resolve name but nslookup OK

    When problem occurs, run "ipconfig /flushdns" and then ping again to see if
    problem persists.
    if flushdns does not help, restart DNS Client service to see if problem
    persists.

    ping relies on DNS Client service, whereas nslookup simply connects to DNS
    server directly.
    --
    HTH
    Marty


    "AXJ" wrote:

    > Hi all
    >
    > We have a very weird DNS resolver issue. Our DNS servers are running on
    > Windows 2003 Servers. We have Vista and WinXP clients. Occasionally, our
    > clients can't resolve internal server DNS names with ping but nslookup would
    > be OK.
    >
    > Any idea what's possibly the cause?
    >
    > Thanks.
    >
    > AxJ
    >
    >
    >


  3. #3
    Kevin D. Goodknecht Sr. [MVP] Guest

    Re: Ping fails to resolve name but nslookup OK

    Read inline please.

    In news:uKqltlbmIHA.5684@TK2MSFTNGP03.phx.gbl,
    AXJ <nomail@mail.net> typed:
    > Hi all
    >
    > We have a very weird DNS resolver issue. Our DNS servers are running
    > on Windows 2003 Servers. We have Vista and WinXP clients.
    > Occasionally, our clients can't resolve internal server DNS names
    > with ping but nslookup would be OK.
    >
    > Any idea what's possibly the cause?


    Do you have only your internal DNS server listed in TCP/IP? (No external or
    ISP DNS allowed, even as an Alternate)



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

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  4. #4
    AXJ Guest

    Re: Ping fails to resolve name but nslookup OK

    Hi Kevin

    The TCP/IP configuration, the internal DNS servers are listed but the names
    in question are internal hosts so only internal DNS servers can resolve them

    The only way we could make it work is to disable and re-enable the network
    interface. That somehow fixes the problem. Question is WHY and how do we fix
    it once and for all. Is it a known WinXP and Vista bug?

    Thanks.

    Regards,
    AXJ

    "Kevin D. Goodknecht Sr. [MVP]" <admin@nospam.WFTX.US> wrote in message
    news:OSgqo8jmIHA.536@TK2MSFTNGP06.phx.gbl...
    > Read inline please.
    >
    > In news:uKqltlbmIHA.5684@TK2MSFTNGP03.phx.gbl,
    > AXJ <nomail@mail.net> typed:
    >> Hi all
    >>
    >> We have a very weird DNS resolver issue. Our DNS servers are running
    >> on Windows 2003 Servers. We have Vista and WinXP clients.
    >> Occasionally, our clients can't resolve internal server DNS names
    >> with ping but nslookup would be OK.
    >>
    >> Any idea what's possibly the cause?

    >
    > Do you have only your internal DNS server listed in TCP/IP? (No external
    > or
    > ISP DNS allowed, even as an Alternate)
    >
    >
    >
    > --
    > Best regards,
    > Kevin D. Goodknecht Sr. [MVP]
    > Hope This Helps
    >
    > ===================================
    > When responding to posts, please "Reply to Group"
    > via your newsreader so that others may learn and
    > benefit from your issue, to respond directly to
    > me remove the nospam. from my email address.
    > ===================================
    > http://www.lonestaramerica.com/
    > http://support.wftx.us/
    > http://message.wftx.us/
    > ===================================
    > Use Outlook Express?... Get OE_Quotefix:
    > It will strip signature out and more
    > http://home.in.tum.de/~jain/software/oe-quotefix/
    > ===================================
    > Keep a back up of your OE settings and folders
    > with OEBackup:
    > http://www.oehelp.com/OEBackup/Default.aspx
    > ===================================
    >
    >




  5. #5
    Kevin D. Goodknecht Sr. [MVP] Guest

    Re: Ping fails to resolve name but nslookup OK

    Read inline please.

    In news:u54fhTnnIHA.4480@TK2MSFTNGP03.phx.gbl,
    AXJ <nomail@mail.com> typed:
    > Hi Kevin
    >
    > The TCP/IP configuration, the internal DNS servers are listed but the
    > names in question are internal hosts so only internal DNS servers can
    > resolve them
    >
    > The only way we could make it work is to disable and re-enable the
    > network interface. That somehow fixes the problem. Question is WHY
    > and how do we fix it once and for all. Is it a known WinXP and Vista
    > bug?


    Disable and re-enable the NIC on the clients or the servers?

    Have you applied the DNS Client update released last week?
    http://support.microsoft.com/kb/945553


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

    ===================================
    When responding to posts, please "Reply to Group"
    via your newsreader so that others may learn and
    benefit from your issue, to respond directly to
    me remove the nospam. from my email address.
    ===================================
    http://www.lonestaramerica.com/
    http://support.wftx.us/
    http://message.wftx.us/
    ===================================
    Use Outlook Express?... Get OE_Quotefix:
    It will strip signature out and more
    http://home.in.tum.de/~jain/software/oe-quotefix/
    ===================================
    Keep a back up of your OE settings and folders
    with OEBackup:
    http://www.oehelp.com/OEBackup/Default.aspx
    ===================================



  6. #6
    Al Guest

    Re: Ping fails to resolve name but nslookup OK

    Kevin

    We disable and re-enable the NIC on the clients, not server. That works
    every time.

    No, I didn't know about the DNS client update. Just read the security
    bulletin about this update. Nothing described there was related to this
    issue.

    Regards,
    AXJ

    "Kevin D. Goodknecht Sr. [MVP]" <admin@nospam.WFTX.US> wrote in message
    news:u6ILD1vnIHA.3780@TK2MSFTNGP06.phx.gbl...
    > Read inline please.
    >
    > In news:u54fhTnnIHA.4480@TK2MSFTNGP03.phx.gbl,
    > AXJ <nomail@mail.com> typed:
    >> Hi Kevin
    >>
    >> The TCP/IP configuration, the internal DNS servers are listed but the
    >> names in question are internal hosts so only internal DNS servers can
    >> resolve them
    >>
    >> The only way we could make it work is to disable and re-enable the
    >> network interface. That somehow fixes the problem. Question is WHY
    >> and how do we fix it once and for all. Is it a known WinXP and Vista
    >> bug?

    >
    > Disable and re-enable the NIC on the clients or the servers?
    >
    > Have you applied the DNS Client update released last week?
    > http://support.microsoft.com/kb/945553
    >
    >
    > --
    > Best regards,
    > Kevin D. Goodknecht Sr. [MVP]
    > Hope This Helps
    >
    > ===================================
    > When responding to posts, please "Reply to Group"
    > via your newsreader so that others may learn and
    > benefit from your issue, to respond directly to
    > me remove the nospam. from my email address.
    > ===================================
    > http://www.lonestaramerica.com/
    > http://support.wftx.us/
    > http://message.wftx.us/
    > ===================================
    > Use Outlook Express?... Get OE_Quotefix:
    > It will strip signature out and more
    > http://home.in.tum.de/~jain/software/oe-quotefix/
    > ===================================
    > Keep a back up of your OE settings and folders
    > with OEBackup:
    > http://www.oehelp.com/OEBackup/Default.aspx
    > ===================================
    >
    >
    >




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