Workstations can't see servers that the DNS/DHCP server can

Discussion in 'Server Networking' started by Marten, Sep 22, 2008.

  1. Marten

    Marten Guest

    I've got a problem and I'm not sure what I've missed. There is a
    server in one of our remote offices that I cannot reach from my
    workstation through Windows Explorer when using it's name. (ie
    \\Remote) However, I can reach it by name from my office's local
    Domain Controller as administrator or from the head office's DC. I can
    access from my workstation if I use the IP address.

    If I do an NSLOOKUP from my workstation, my local DC replies as the
    DNS host and the remote server is found.

    By access, I mean that I want to see the available file shares and
    printers on the server.

    Anyone have any suggestions as to what I should be looking at? More
    info needed?

    Marten

    (If I've put this in the wrong group, my apologies. Could you net
    direct me to a more appropriate group?)
     
    Marten, Sep 22, 2008
    #1
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  2. Marten

    Chris M Guest

    So it probably isn't a DNS config problem if your local DNS server gives
    the right response.

    Has the IP address of the remote server changed recently? Could your
    machine be caching an old IP address perhaps? Try ipconfig /flushdns and
    then try connecting again using the name.
     
    Chris M, Sep 22, 2008
    #2
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  3. Hello Marten,

    How is the remote network connected? Please describe your network configuration.
    Also post an unedited ipconfig /all from the DC, the client and the remote
    server.

    Best regards

    Meinolf Weber
     
    Meinolf Weber, Sep 22, 2008
    #3
  4. Marten

    Marten Guest

    as requested:

    We have an ISP maintained VPN (MPLS) for our main offices. The ISP
    controls those routers. The head office is has a 30mb/s connection,
    and the other regional offices are on 10mb/s. There are two remote
    offices that the ISP could not supply service to that use local VPN
    routers to connect to a router controlled by us inside the MPLS. It
    has a specific external IP address being forwarded to it. Both of
    these external sites are on Business DSL services. I'm having no
    issues with the other site.

    Each office has it's own IP range: 10.10.0.x, 10.20.0.x, etc

    Between the remote site and this router, there are two tunnels
    defined. One to the head office network and one to my office network.

    The servers are Windows 2003 Standard. I did have a SBS2003 in this
    office but it has been replaced with 2003 Standard.

    ipconfig /all for:

    Local DC
    ========
    Windows IP Configuration

    Host Name . . . . . . . . . . . . : wpg-svr-dc1
    Primary Dns Suffix . . . . . . . : mcw.com
    Node Type . . . . . . . . . . . . : Broadcast
    IP Routing Enabled. . . . . . . . : Yes
    WINS Proxy Enabled. . . . . . . . : Yes
    DNS Suffix Search List. . . . . . : mcw.com

    Ethernet adapter Local Area Connection:

    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : HP NC7781 Gigabit Server
    Adapter
    Physical Address. . . . . . . . . : 00-14-C2-5B-D0-0F
    DHCP Enabled. . . . . . . . . . . : No
    IP Address. . . . . . . . . . . . : 10.20.0.11
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Default Gateway . . . . . . . . . : 10.20.0.40
    DNS Servers . . . . . . . . . . . : 10.20.0.11
    10.10.0.5

    Local Workstation
    ==============
    Windows IP Configuration

    Host Name . . . . . . . . . . . . : wpgaccdaccting
    Primary Dns Suffix . . . . . . . : mcw.com
    Node Type . . . . . . . . . . . . : Hybrid
    IP Routing Enabled. . . . . . . . : No
    WINS Proxy Enabled. . . . . . . . : No
    DNS Suffix Search List. . . . . . : mcw.com
    mcw.com

    Ethernet adapter Local Area Connection:

    Connection-specific DNS Suffix . : mcw.com
    Description . . . . . . . . . . . : Realtek RTL8169/8110
    Family Gigabit
    Ethernet NIC
    Physical Address. . . . . . . . . : 00-14-2A-9E-A9-A8
    Dhcp Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes
    IP Address. . . . . . . . . . . . : 10.20.0.172
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Default Gateway . . . . . . . . . : 10.20.0.6
    DHCP Server . . . . . . . . . . . : 10.20.0.11
    DNS Servers . . . . . . . . . . . : 10.20.0.11
    10.10.0.5
    Lease Obtained. . . . . . . . . . : September 21, 2008 5:20:11
    AM
    Lease Expires . . . . . . . . . . : September 24, 2008 5:20:11
    AM

    Head Office DC
    ============
    Windows IP Configuration

    Host Name . . . . . . . . . . . . : tor-svr-dc1
    Primary Dns Suffix . . . . . . . : mcw.com
    Node Type . . . . . . . . . . . . : Unknown
    IP Routing Enabled. . . . . . . . : Yes
    WINS Proxy Enabled. . . . . . . . : Yes
    DNS Suffix Search List. . . . . . : mcw.com

    PPP adapter RAS Server (Dial In) Interface:

    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : WAN (PPP/SLIP) Interface
    Physical Address. . . . . . . . . : 00-53-45-00-00-00
    DHCP Enabled. . . . . . . . . . . : No
    IP Address. . . . . . . . . . . . : 10.10.0.60
    Subnet Mask . . . . . . . . . . . : 255.255.255.255
    Default Gateway . . . . . . . . . :

    Ethernet adapter Local Area Connection:

    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : HP NC7781 Gigabit Server
    Adapter
    Physical Address. . . . . . . . . : 00-14-C2-59-41-12
    DHCP Enabled. . . . . . . . . . . : No
    IP Address. . . . . . . . . . . . : 10.10.0.5
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Default Gateway . . . . . . . . . : 10.10.0.45
    DNS Servers . . . . . . . . . . . : 10.10.0.5
    10.10.0.13
    NetBIOS over Tcpip. . . . . . . . : Disabled

    Remote Site DC
    =============
    Windows IP Configuration

    Host Name . . . . . . . . . . . . : dau-svr-dc1
    Primary Dns Suffix . . . . . . . : mcw.com
    Node Type . . . . . . . . . . . . : Unknown
    IP Routing Enabled. . . . . . . . : Yes
    WINS Proxy Enabled. . . . . . . . : No
    DNS Suffix Search List. . . . . . : mcw.com

    Ethernet adapter Local Area Connection:

    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Intel(R) PRO/1000 EB Network
    Connection w
    ith I/O Acceleration
    Physical Address. . . . . . . . . : 00-15-17-18-3D-54
    DHCP Enabled. . . . . . . . . . . : No
    IP Address. . . . . . . . . . . . : 10.70.0.10
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Default Gateway . . . . . . . . . : 10.70.0.1
    DNS Servers . . . . . . . . . . . : 10.70.0.10
    10.10.0.5


    A couple of extra curiousities.
    1) A nslookup from my workstation gives my local DC as the DNS
    server. A nslookup from the local DC gives the head office as the
    server.
    2) If I try to do a Remote Desktop Connection from my desktop to the
    remote server, it connects, displays the remote desktop and then I
    can't do anything else inside that session. If I RDC to the head
    office server and then RDC to the remote office, I can work there
    fine.

    Any more info needed?

    Marten
     
    Marten, Sep 22, 2008
    #4
  5. Hello Marten,

    Browsing over subnets needs a WINS server.

    Best regards

    Meinolf Weber
     
    Meinolf Weber, Sep 22, 2008
    #5
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