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reset TCP connections to *.microsoft.com

  • From: Mr. Dana Hudes
  • Date: Tue Jun 09 13:54:21 1998

Anyone else experiencing trouble connecting various microsoft
www and ftp sites? I put a Sniffer on the line and found that
I have a part of a web page come up and then the connection is
reset.
This is using Netscape Communicator4 on both NT and SPARC
Solaris. If one uses IE3 it works better.
I find this highly suspicious. Also straight ftp from a unix
system
is very slow if you get in at all. I think we can all agree that
the tcp/ip stack on sparc solaris 2.5.1 is not likely broken
(patched
to current level, January '98, just in case) where NT might be
suspect even 4.0 w/service pack 3.

One possible problem I consider is that I have Path MTU discovery
turned on in all my routers interfaces (Bay RS12.10). My path to
microsoft is via Alter.Net . The local Ethernet MTU is 1518 but
the UUNET circuit is 1600. The packets I see come by with  "don't
fragment" set for several and then one that does not have DF and
then the TCP reset comes in.

Suggestions and opinions? 

Thanks
Dana Hudes
Graphnet




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