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1993-11-22
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DOCUMENT:Q106687 19-NOV-1993 [W_NT]
TITLE :NWLink Connections Fail Across Novell Routers
PRODUCT :Windows NT
PROD/VER:3.10
OPER/SYS:WINDOWS
KEYWORDS:
----------------------------------------------------------------------
The information in this article applies to:
- Microsoft Windows NT operating system version 3.1
- Microsoft Windows NT Advanced Server version 3.1
----------------------------------------------------------------------
SUMMARY
=======
When you cross Novell routers (file servers or multi-protocol routers)
using NWLink, you may receive some erratic behavior unless a Registry
entry is made for maximum packet size.
SYMPTOMS
========
The symptoms for this problem vary. In some cases, the response to a
drive connection in File Manager takes minutes to respond. In other
cases, File Manager stops responding (hangs). Sometimes, error
messages are returned indicating a network problem. Even if a
connection takes place, erroneous results may be returned.
For example, share the WINNT\SYSTEM32 directory which contains greater
than 500 on one Windows NT Advanced Server machine. When you attempt
to connect to this share (as Administrator) from a different Windows
NT Advanced Server, you will receive a "No Files Found" error message.
In this example, the only machines on this internetwork are the two
Windows NT Advanced Servers and a NetWare 3.11 file server acting as a
router. The following NLMs are loaded on the NetWare server: ISADISK,
TOKEN, NMAGENT, and MONITOR.
Making the same connection when both Windows NT Advanced Server
machines are connected to the same Token Ring produce the correct
result. Directories containing only a few files may not exhibit the
above behaviors.
RESOLUTION
==========
The workaround to this problem is to add an entry to the registries of
the Windows NT machines as follows:
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 solved. Use this tool at your own
risk.
1. At a command prompt, type REGEDT32.
2. Single-click on HKEY_LOCAL_MACHINE window.
3. Double-click the following in the order listed: SYSTEM,
CurrentControlSet, Services.
4. Scroll to NWLINKIPX.
5. Double-click the following in the order listed: NWLINKIPX,
NetConfig, Driver01.
6. Check to see if there is a MaxPktSize entry in the box on the right.
If so, double-click it and proceed to step 8.
7. If MaxPktSize does not exist, select choose Add Value from the Edit
menu. In the Value Name field, type "MaxPktSize" (without the
quotation marks. Change the Data Type field to REG_DWORD. Choose OK.
8. Change the Radix field to Decimal. In the Data, enter 1500. Choose
OK.
9. Quit the Registry Editor, quit all open applications, shut down and
restart the machine.
Additional reference words: 3.10
KBCategory:
KBSubCategory: prot
=============================================================================
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 1993.