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  • #2082739

    Network Bandwidth

    Locked

    by twhong ·

    Is there a way to increase the size of the tcp window to allow more bytes to be sent and received (like the mtu) ? Is it through the registry ? How can I do it at the server and windows 98 ?

    Thank you

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    • #3897618

      Network Bandwidth

      by dsmit221 ·

      In reply to Network Bandwidth

      There are various settings for tweaking TCP/IP, but all should be used with care.

      Within the registry under:
      HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters

      insert a value named “TcpWindowSize” REG_DWORD

      This value determines the maximum TCP receive window size that can be offered.
      For maximum efficiency, this setting should be an even-numbered multiple of the TCP Maximum Segment Size. The default setting for this value depends on the larger of four times the maximum TCP data size on the network, or 8192, rounded up to an even multiple of the network TCP data size. The default is the smaller of the two. Ethernet default setting is 8760.

      There is also another setting for MTU for TCP.

      Again in the same registry path add a value
      “EnablePMTUDiscovery” REG_DWORD

      If this is set to 0, TCP uses an MTU of 576 bytes. If you set it to 1, TCP attempts to discover the MTU, or largest packet size.

      Hope this helps

      • #3739951

        Network Bandwidth

        by twhong ·

        In reply to Network Bandwidth

        The question was auto-closed by TechRepublic

    • #3897611

      Network Bandwidth

      by fwilliam ·

      In reply to Network Bandwidth

      There are many different settings within the registry to which you can increase your MTU’s. If you go to http://www.speedguide.net they offer much info on registry tweaking, and they also have a lot of pre-written scripts that you can run to automaticallyupdate the registry for you…

      • #3739952

        Network Bandwidth

        by twhong ·

        In reply to Network Bandwidth

        The question was auto-closed by TechRepublic

    • #3739950

      Network Bandwidth

      by twhong ·

      In reply to Network Bandwidth

      This question was auto closed due to inactivity

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