DOCUMENT:Q159288 10-APR-1999 [exchange] TITLE :XADM: Exchange Setup Stops During Replication with a Server PRODUCT :Microsoft Exchange PROD/VER:winnt:4.0 OPER/SYS: KEYWORDS:kbsetup ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Exchange Server, version 4.0 ------------------------------------------------------------------------------- SYMPTOMS ======== With TCP\IP as the transport protocol, Microsoft Exchange Server Setup appears to stop during the replication portion of setup that displays the progress bar stating: Replicating local site with server . If the and "percentage completed" referenced in the message does not increase over a period of approximately 15 minutes, Setup may have stopped. CAUSE ===== IP routers not conforming to RFC1191 may drop frames that: - exceed the maximum MTU size for the "next hop." - have the "don't fragment" flag set. WORKAROUND ========== Microsoft Windows NT TCP provides a number of configurable features designed to work around this router configuration limitation. For explanations and workarounds, please see the following articles in the Microsoft Knowledge Base: Q159211 Diagnoses and Treatment of Black Hole Routers Q136970 PMTU Black Hole Detection Algorithm Change for Windows NT 3.51 STATUS ====== Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 4.0. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available. MORE INFORMATION ================ A network trace taken simultaneously on both the Setup server's segment and the server listed as is the best way to determine that this is indeed the issue. Analysis of the trace may reveal that frames sent from the computer do not arrive at the Setup server. Furthermore, no ICMP diagnostic frames are returned to the computer from the router. Additional query words: ====================================================================== Keywords : kbsetup Technology : kbExchangeSearch kbExchange400 kbZNotKeyword2 Version : winnt:4.0 ============================================================================= 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 1999.