Only 60 Clients Can Simultaneously Access a TCP/IP Share

Last reviewed: May 15, 1997
Article ID: Q114638

The information in this article applies to:

Microsoft Windows NT operating system versioin 3.1
Microsoft Windows NT Advanced Server version 3.1

SYMPTOMS

Only 60 clients can simultaneously access a Windows NT Advanced Server shared resource over TCP/IP.

CAUSE

The default ARP cache is set to 62.

RESOLUTION

To avoid this problem, modify the setting for the ARP cache. You can use Registry Editor to change this setting in the following key:

   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters

Create a value called ArpCacheSize and set it to 250.

WARNING: Using Registry Editor incorrectly can cause serious, system-wide

   problems that may require you to reinstall Windows NT to correct them.
   Microsoft cannot guarantee that any problems resulting from the use of
   Registry Editor can be resolved. Use this tool at your own risk.

STATUS

Microsoft has confirmed this to be a problem in Windows NT and Windows NT Advanced Server version 3.1. This problem has been corrected in the latest U.S. Service Pack for Windows NT and Windows NT Advanced Server version 3.1. For information on obtaining the Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

   S E R V P A C K

Additional query words: prodnt
Keywords : kbbug3.10 kbnetwork NTSrvWkst nttcp
Version : 3.1
Platform : WINDOWS

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Last reviewed: May 15, 1997
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