Slow network transfer within LAN

Discussion in 'Server Networking' started by TC, Dec 21, 2006.

  1. TC

    TC Guest

    Hello,

    I am noticing; well I have always noticed with Windows that when you
    need to drag and drop files between computers they always go slow. We're
    talking 1-2% of a 100Mbs 100% switch LAN. It's getting annoying and I
    was wondering what I can do to speed things up.

    Transfers are between XP and XP and XP and 2003 just dragging and
    dropping with in mapped and unmapped drives.

    If I do FTP, HTTP, SSH, and other transfers on the Internet I can
    saturate the Internet connection. When I use to run an FTP server on the
    LAN I was able to reach 100% through put. Why can't I without the FTP
    server. I want to avoid the FTP server on the LAN as I'd like to just
    stick with my mapped drives.

    Thanks,

    TC
     
    TC, Dec 21, 2006
    #1
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  2. TC

    TC Guest

    I forgot to mention I am network/system administrator.

    Thanks again,

    TC
     
    TC, Dec 21, 2006
    #2
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  3. In
    Try disabling SMB signing.

    Here are some pertinent articles:

    822219 - You experience slow file server performance and delays occur when
    you work with files that are located on a file server:
    http://support.microsoft.com/?kbid=822219&SD=tech

    JSI Tip 0992. SMB message signing will slow network performance.:
    http://www.jsifaq.com/SF/Tips/Tip.aspx?id=0992

    JSI Tip 9731. You experience slow network performance using ADSL ...:
    http://www.jsifaq.com/SF/Tips/Tip.aspx?id=9731

    Slow network performance occurs if you copy files to a domain controller
    that is running Windows 2000 or Windows Server 2003:
    http://support.microsoft.com/kb/321098

    Slow network performance occurs when you select a file on a share that uses
    NTFS:
    http://support.microsoft.com/kb/265396


    --
    Ace
    Innovative IT Concepts, Inc (IITCI)
    Willow Grove, PA

    This posting is provided "AS-IS" with no warranties or guarantees and
    confers no rights.

    Ace Fekay, MCSE 2003 & 2000, MCSA 2003 & 2000, MCSE+I, MCT, MVP
    Microsoft MVP - Directory Services
    Microsoft Certified Trainer

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    Ace Fekay [MVP], Dec 22, 2006
    #3
  4. TC

    TC Guest

    Thank you for the links. I will have to read them and see what I can
    come up with. I am totally blanking right now on what SMB signing is? I
    want to say it's an authentication or other security/encryption based
    off the name. If that is the case I was wondering the ramifications.

    Thanks,

    TC
     
    TC, Dec 25, 2006
    #4
  5. In
    In a layman's nutshell, Server Message Block (SMB) signing 'tags' each
    packet with a signature only understood between domain members. Howvver
    pre-Win98 SE machines, and pre- NT40 SP4 machines, as well as MACs and other
    non-Microsoft operatings systems, cannot understand or communicate using
    this method when they conenct as a UNC (such as a mapped drive or thru a Run
    command). This is especially indicative in a mixed Mac/Linux with Samba,
    etc, environment. Disabling it allows communication.

    Error Message When Windows 95 or Windows NT 4.0 Client Logs On to Windows
    Server 2003 Domain
    http://support.microsoft.com/?id=811497


    But that is only part of what can be happening. There are numerous other
    factors, which my previous list of links show. Whenever there is network
    slowness, unless there's a minimal of apps installed and in use, it is
    sometimes difficult to diagnose. One of the links indicate a 3rd party
    application can be causing it.

    Read up and see which applies to your situation the best.

    Happy Holidays!

    Ace
     
    Ace Fekay [MVP], Dec 25, 2006
    #5
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