DOCUMENT:Q124343 07-FEB-2002 [winnt] TITLE :MSDLC T1 Timer Does Not Back Off PRODUCT :Microsoft Windows NT PROD/VER::2.2,3.11 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft LAN Manager, version 2.2 - Microsoft Windows for Workgroups version 3.11 ------------------------------------------------------------------------------- SYMPTOMS ======== When a link is lost or temporarily unavailable, Microsoft data link control (MSDLC) clients retransmit frames at the default value for T1, rather than backing off exponentially. CAUSE ===== This problem occurs due to an error in the MSDOS-based version of MSDLC algorithm for backing off the T1 timer. STATUS ====== Microsoft has confirmed this to be a problem in MSDLC. A fix to this problem is in development, but has not been regression-tested and may be destabilizing in production environments. Microsoft does not recommend implementing this fix at this time. Contact Microsoft Product Support Services for more information on the availability of this fix. NOTE: Although T1 will back off exponentially after installing this hotfix, by specification, it is not allowed to exceed the current value of Ti. Therefore, if the value of Ti is set low, T1 will only back off until doubling it again would cause it to exceed Ti. Additional query words: wfw wfwg prodnt 3.10 2.20 MSDLC client ====================================================================== Keywords : Technology : kbAudDeveloper kbLanManSearch kbWFWSearch kbWFW311 kbLanMan220 Version : :2.2,3.11 ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2002.