CHecksum errors, dropped frames - one direction only

Discussion in 'Windows Networking' started by Frank Rowe, Jun 8, 2005.

  1. Frank Rowe

    Frank Rowe Guest

    I'm running Win XP pro on a workstation inside the network firewall - remote
    connecting in "My network places" to a Win 2K3 server outside the firewall.
    I can open a connection & see the server's drives/folders. I can copy files
    form the server to my workstation (inbound), nad it works OK (if a little
    slow). But when I try to go the other way (outbound) it gets REALLY slow,
    with large numbers of dropped frames.
    I ran a network monitor session on it, and captured some of the traffic (a
    short CAP file is attached). 63 of the 100 frames in this CAP file have
    checksum errors.

    Any idea what could cause such a high rate of checksum errors - in only one
    Frank Rowe, Jun 8, 2005
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  2. Frank Rowe

    xlove Guest

    It's probably a duplex error. Try making the switch to be static 100 full. If
    you don't have that option try doing it on the workstation.
    xlove, Jun 8, 2005
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  3. Frank Rowe

    Frank Rowe Guest

    Thanks for the reply. The server's network adapter was already set that way;
    I changed the workstation to match - but I still have the same problem.
    Trouble is, there are at least two firewalls and maybe a dozen connections
    between the two - is there something I can tell my net support to look for
    in troubleshooting this?
    Frank Rowe, Jun 10, 2005
  4. Frank Rowe

    xlove Guest

    set it back to auto on both sides then. At this point it's just good old
    fashioned detective work. you need to inch your way across all those
    connections to find the issue. Might just start by hooking up a pc to the
    same switch as the server and then copy the files and go from there. But if
    you are getting dropped frames it's got to be network related. Maybe a nic or
    a duplex error. Try checking around for half duplex setting that causes a lot
    of the time.
    xlove, Jun 10, 2005
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