Microsoft KB Archive/248279
PSS ID Number: 248279
Article Last Modified on 10/16/2002
The information in this article applies to:
- Microsoft Windows NT Server 4.0
- Microsoft Windows NT Load Balancing Service 1.0
This article was previously published under Q248279
On a cluster host with a single network adapter, the transmission of Internet Protocol (IP) packets for outbound connections (for example, to a back end database) may appear to be paced at 16-millisecond intervals. This may affect the performance of a Windows NT Load Balancing Service (WLBS) cluster, and the problem may be especially noticeable under low loads.
If you disable WLBS the time delay is not improved. If you uninstall WLBS, the problem is resolved.
This behavior occurs because of an interaction failure between WLBS and Network Driver Interface Specification (NDIS).
A supported fix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Apply it only to computers that are experiencing this specific problem. This fix may receive additional testing. Therefore, if you are not severely affected by this problem, Microsoft recommends that you wait for the next Windows NT 4.0 service pack that contains this fix.
To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site:
NOTE: In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The typical support costs will apply to additional support questions and issues that do not qualify for the specific update in question.
The English-language version of this fix should have the following file attributes or later:
Date Time Size File name Platform --------------------------------------------------- 10/12/1999 08:44p 36,112 Wlbs.exe x86 10/29/1999 02:06p 60,208 Wlbs.sys 10/12/1999 08:43p 121,744 Ndis.sys 10/12/1999 08:43p 51,472 Wlbs.exe Alpha 10/29/1999 02:05p 101,104 Wlbs.sys 10/12/1999 08:41p 213,680 Ndis.sys
Microsoft has confirmed that this is a problem in Windows NT 4.0.
Additional query words: nic card
Keywords: kbbug kbnetwork kbQFE KB248279
Technology: kbWinNT400search kbWinNTLBS100 kbWinNTLBSSearch kbWinNTS400 kbWinNTS400search kbWinNTsearch kbWinNTSsearch