HELP: Router/Network Advice - drop connections

Discussion in 'Server Networking' started by And Wan, Aug 28, 2009.

  1. And Wan

    And Wan Guest

    Am not sure where to go for help/advice/knowledge. I am hoping some people
    can give some feedback/advice to my queries.

    We used to have a Vigor DrayTek , on a 4MBit line, and a Windows 2000 Server
    for web proxy, DHCP & firewall. Everything was fine (web surfing is fine,
    MSN is fine, Remote Desktop is fine, etc). Until our Windows 2000 Server
    died and we decided to try letting the router Vigor DrayTek to handle all
    the DHCP & web proxy.

    We started getting lots of MSN dropped connections, dropped Remote Desktop
    connections & slow internet. Every now and then we can't access the internet
    for a bit (probably due to saturation or bottlenecks).

    We got a new router Vigor (next model) hoping it would solve dropped
    connection issues. But it hasn't really. We still get dropped connections
    from time to time. What is the best/ideal config/setup for a router to
    prevent/stop these dropped connections for Remote Desktop & MSN? I mean,
    before when we were using Windows 2000 Server, we never got a drop
    connection from MSN or Remote Desktop. Now we get it constantly and it's

    Is there a Network Monitor tool to diagnose what's going on? On the router
    should there be a maximum sessions, bandwidth limit, etc?
    And Wan, Aug 28, 2009
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  2. We used to have a Vigor DrayTek , on a 4MBit line, and a Windows 2000
    Sounds like your Win 2k3 server was handing out the correct DNS servers to
    your clients.

    Until our Windows 2000 Server
    Sounds like your router is handing your AD clients thw wrong primary or
    alternate DNS servers.

    Post an IPconfig /all from one of the problem computers.

    Danny Sanders, Aug 28, 2009
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  3. I agree with what Danny suggested. Verify the router is sending the clients
    the proper dns settings. If that's correct some ideas are below.

    If you weren't having network saturation previously with the windows server
    installed it's unlikely that the network traffic would suddenly increase
    causing a bottleneck. You could rule this out by monitoring your bandwidth
    usage on the router using free tools such as MRTG or openNMS if you wanted to

    I'm not familiar with your routing device but it's possible that the
    firewall settings are being refreshed to frequently and dropping your

    The router might be having performance issues as well. I'd enable any error
    logging that is available on it and review.

    Michael E. Walden, Sep 6, 2009
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