Slow network transfer within LAN

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

  1. TC

    TC Guest


    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.


    TC, Dec 21, 2006
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  2. TC

    TC Guest

    I forgot to mention I am network/system administrator.

    Thanks again,

    TC, Dec 21, 2006
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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:

    JSI Tip 0992. SMB message signing will slow network performance.:

    JSI Tip 9731. You experience slow network performance using ADSL ...:

    Slow network performance occurs if you copy files to a domain controller
    that is running Windows 2000 or Windows Server 2003:

    Slow network performance occurs when you select a file on a share that uses

    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

    Having difficulty reading or finding responses to your post?
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    Ace Fekay [MVP], Dec 22, 2006
  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.


    TC, Dec 25, 2006
  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

    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 Fekay [MVP], Dec 25, 2006
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