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Q124343: MSDLC T1 Timer Does Not Back Off

Article: Q124343
Product(s): Microsoft Windows NT
Version(s): 2.2,3.11
Operating System(s): 
Keyword(s): 
Last Modified: 07-FEB-2002

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The information in this article applies to:

- Microsoft LAN Manager, version 2.2 
- Microsoft Windows for Workgroups version 3.11 
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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

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Keywords          :  
Technology        : kbAudDeveloper kbLanManSearch kbWFWSearch kbWFW311 kbLanMan220
Version           : :2.2,3.11

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