If you use the 3COM EtherLink III (3C509) network interface card (NIC) and the 3COM ODI MLID (3C509.COM or 3C5x9.COM) with Windows for Workgroups version 3.11 and Novell NetWare is installed as your secondary network, you may encounter the following problems:
- Copying large blocks of data across the network cause the computer to stop responding (hang).
- The computer inadvertently loses network connections.
The 3C509 NIC has a 4-kilobyte (K) FIFO buffer. This allows 2K to receive and 2K to transmit. If more information than this is passed through the card at one time, that information is lost.
In addition, the 3C509 uses approximately 88 percent of the CPU's resources when it is transmitting.
Microsoft, in joint effort with 3COM has developed an Application Note (WG1004) to correct this problem. This Application Note provides an updated MSODISUP.386 file. For more information, query on the following words in the Microsoft Knowledge Base at http://198.105.232.5:80/KB/PEROPSYS/windows/Q111712.htm or
appnote and msodisup.386 and WG1004
This installer will replace the MSODISUP.386 file in your system directory with the new version which should fix the problem described above. By default this directory is c:\windows\system, if your WFWG system directory is in a different location you will have to specify the correct directory.
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