[97856] in North American Network Operators' Group
Re: TCP congestion
daemon@ATHENA.MIT.EDU (Stephen Wilcox)
Thu Jul 12 17:33:12 2007
Date: Thu, 12 Jul 2007 22:14:42 +0100
From: Stephen Wilcox <steve.wilcox@packetrade.com>
To: Iljitsch van Beijnum <iljitsch@muada.com>
Cc: Philip Lavine <source_route@yahoo.com>, nanog <nanog@merit.edu>
In-Reply-To: <922B68D8-BCB4-40B8-885A-2459BDFEDA34@muada.com>
Errors-To: owner-nanog@merit.edu
On Thu, Jul 12, 2007 at 10:54:56PM +0200, Iljitsch van Beijnum wrote:
> On 12-jul-2007, at 22:27, Philip Lavine wrote:
>
> >I just don't understand how if there is 1 segment that gets lost
> >how this could translate to such a catastrophic long period of slow-
> >start. How can I minimize the impact of the inevitable segment
> >loss/out of order over a WAN. Is QoS the only option?
>
> Also note that minimal amounts of cell loss on ATM create huge
> amounts of packet loss at the IP layer.
from the phrases used ('catastrophic') my feeling is that perhaps Philip isnt understanding that on a high speed TCP transfer a single missing bit of data can cause the whole thing to stop and restart transmission from slow
Steve
