[97842] in North American Network Operators' Group
Re: TCP congestion
daemon@ATHENA.MIT.EDU (Philip Lavine)
Thu Jul 12 15:09:23 2007
Date: Thu, 12 Jul 2007 12:02:49 -0700 (PDT)
From: Philip Lavine <source_route@yahoo.com>
To: nanog <nanog@merit.edu>
Errors-To: owner-nanog@merit.edu
Even if the segment was received out of order what would cause congestion avoidance to starve the connection of legitimate traffic for 15 to 20 seconds? That is the core of the problem.
----- Original Message ----
From: Fred Baker <fred@cisco.com>
To: Brian Knoll <Brian.Knoll@tradingtechnologies.com>
Cc: Philip Lavine <source_route@yahoo.com>; nanog <nanog@merit.edu>
Sent: Thursday, July 12, 2007 11:56:06 AM
Subject: Re: TCP congestion
On Jul 12, 2007, at 11:42 AM, Brian Knoll ((TTNET)) wrote:
> If the receiver is sending a DUP ACK, then the sender either never
> received the first ACK or it didn't receive it within the timeframe it
> expected.
or received it out of order.
Yes, a tcpdump trace is the first step.
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