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Network traffic problem

Discussion in 'Networking' started by Stiltz, Apr 20, 2005.

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  1. Stiltz

    Stiltz Thread Starter

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    I have 10 Windows XP Clients, 1 Windows 2000 Advanced Server configured as a domain controller, 1 Windows 2000 Advanced Server with SQL Server 7.0 installed and 1 Windows 2000 Workstation.

    Here is the problem:

    When the Win2000 workstation logs on in the morning and gets into the system, everyone else slows to almost a complete stop. If I unplug the Domain Controller after she logs on, everyone else speeds back up. If the domain controller is not plugged in the win2000 workstation can't log on. This is a serious problem and I can't figure out why the network would slow. My Domain Controller is the only machine with a 10 MBPS ethernet card. The SQL server sits outside the domain in a workgroup.

    My boss is really pissed off because this has been going on for weeks now.

    Please Help,

    Thanks,

    Stiltz
     
  2. John__YTO

    John__YTO

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    Have your ruled out any virus activity?
     
  3. Stiltz

    Stiltz Thread Starter

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    yeah. This problem didn't start until I upgraded everybody to XP and put them in a domain. That one win 2000 workstation is the owner's and was working fine when I started with the system change. Before this, there was a mix of operating systems ( win 95, win98, 2000 and xp) with no domain. They were in a workgroup with users having local administrator rights. I created the domain for easier user management and easier system monitoring.
    Since the owner's machine was fine, I just joined it to the domain and left it alone. All windows updates are installed, antivirus up to date and ad-aware run daily.
     
  4. John__YTO

    John__YTO

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    hmmmm, this might be a long shot but see if SSDP and UPnP are running on the XP systems, if they are disable them, I’ve seen the protocols create unnecessary network traffic before. Are you able to re-image the win2k system? Also maybe try another network card if you have an extra one.
     
  5. Stiltz

    Stiltz Thread Starter

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    what are those 2 protocols you mentioned? I just graduated college with my associates in IT. This company is small and I took this position just as a on-call basis and it turned into a bigger headache than it's worth. My problem I need to stick with it until I can find something full-time and permanent. I'm the only IT person there and they only allow me 10 hours a month. I can re-image the win2k machine if needed.
     
  6. ernestos

    ernestos

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    this could be a long shot as well, but try checking the NIC card on the win 2k machine speed. The speed of the NIC card should be set to auto 99% of the time.
     
  7. Stiltz

    Stiltz Thread Starter

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    How do I check that?

    Thanks for everyone's help it's appreciated.
     
  8. John__YTO

    John__YTO

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    they are services, they are used mostly for home networks. On the XP systems, go to start/run and type in services.msc look for SSDP Discovery Service and Universal Plug n Play. Disable them both.
     
  9. John__YTO

    John__YTO

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    right click on the "Local area Connection" select "Properties" click the "Configure" button, select the "Advanced" tab. Under "Link speed and Duplex" make sure its set to "Auto"
     
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