From: Maurice Volaski <mvolaski@aecom.yu.edu>
To: linux-kernel@vger.kernel.org
Cc: jesse.brandeburg@intel.com, jeffrey.t.kirsher@intel.com
Subject: e1000 is subtly incompatible with jumbo frames
Date: Thu, 5 Mar 2009 17:14:47 -0500 [thread overview]
Message-ID: <a06240409c5d5e74a49d0@[129.98.90.227]> (raw)
I have a system using the e1000 driver with the MTU set to 9000. If I
try FTP to get a file, the transfer does not start. Something about
the 9000 MTU is preventing the NIC from receiving packets back from
the FTP server. (The FTP server is on the same subnet and its NIC
also has MTU 9000.) The 9000 MTU NIC works fine in every other
respect, even allowing me to access the system via ssh. When I change
the MTU to 1500, then FTP works fine. The problem is common to
numerous kernel versions including 2.6.24 through 2.6.29-rc5.
--
Maurice Volaski, mvolaski@aecom.yu.edu
Computing Support, Rose F. Kennedy Center
Albert Einstein College of Medicine of Yeshiva University
next reply other threads:[~2009-03-05 22:15 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-05 22:14 Maurice Volaski [this message]
2009-03-05 22:38 ` Brandeburg, Jesse
2009-03-05 22:58 ` Maurice Volaski
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