Article ID: 306037
Article Last Modified on 10/11/2002
APPLIES TO
- Microsoft Windows XP Professional
- Microsoft Windows XP Home Edition
This article was previously published under Q306037
SUMMARY
Support for the Data Link Control (DLC) protocol has been discontinued in Windows XP. This protocol is not available to install in Windows XP.
If you upgrade from a previous version of Microsoft Windows with the DLC protocol installed, the Compatibility Wizard displays the following message:
MORE INFORMATION
The DLC protocol is a non-routable protocol that is primarily used for connectivity in IBM SNA environments for mainframes and minicomputers such as the AS/400. The DLC interface is most commonly used by 3270 terminal emulators to communicate with IBM mainframes.
The functions that are performed by this protocol include error detection (by using a check character), error correction (by using time-outs and retransmissions), flow control (by using delayed acknowledgments and "receiver not ready" response frames), and having multiple devices on the same media (by using polling and acknowledgments).
A Windows XP version of the DLC protocol is available as a free download from the following Microsoft Web site:
NOTE: The Windows XP version of the DLC protocol is provided as is. The DLC protocol may not work properly with Windows XP, and Microsoft does not support the DLC protocol with Windows XP.
Keywords: kbinfo kbnetwork KB306037
