Article: Q159288
Product(s): Microsoft Exchange
Version(s): winnt:4.0
Operating System(s):
Keyword(s): kbsetup
Last Modified: 10-APR-1999
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The information in this article applies to:
- Microsoft Exchange Server, version 4.0
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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 <servername>.
If the <servername> 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 <servername> is the best way to determine that this is
indeed the issue.
Analysis of the trace may reveal that frames sent from the <servername>
computer do not arrive at the Setup server. Furthermore, no ICMP diagnostic
frames are returned to the <servername> computer from the router.
Additional query words:
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Keywords : kbsetup
Technology : kbExchangeSearch kbExchange400 kbZNotKeyword2
Version : winnt:4.0
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