From: Simon Kirby <sim@stormix.com>
To: linux-kernel@vger.kernel.org
Subject: ECN
Date: Fri, 26 Jan 2001 12:05:56 -0500 [thread overview]
Message-ID: <20010126120556.A13417@stormix.com> (raw)
In-Reply-To: <20010126124426.O2360@marowsky-bree.de> <Pine.SOL.4.21.0101261344120.11126-100000@red.csi.cam.ac.uk> <20010126154447.L3849@marowsky-bree.de> <20010126160342.B7096@pcep-jamie.cern.ch> <14961.37986.469902.496834@pizda.ninka.net>
In-Reply-To: <14961.37986.469902.496834@pizda.ninka.net>; from davem@redhat.com on Fri, Jan 26, 2001 at 07:14:42AM -0800
On Fri, Jan 26, 2001 at 07:14:42AM -0800, David S. Miller wrote:
> Jamie Lokier writes:
> > Does ECN provide perceived benefits to the node using it?
>
> Yes, endpoints and intermediate routers can tell the TCP sender about
> congestion instead of TCP having to guess about it based upon observed
> packet drop.
>
> It is a major enhancement to performance over any WAN.
>
> The endpoint based congestion notification happens _now_ if both
> sides speak ECN. The router based notification will be happening
> in the near future as Cisco and others deploy ECN speaking versions of
> their router software.
Hmm... Just wondering: what does TCP then do when it receives this ECN
notification? Try harder, try less? Or does it get a specific packet
saying "I dropped your packet", and then the sender retransmits?
I suppose I could go find the RFC...
Simon-
[ Stormix Technologies Inc. ][ NetNation Communications Inc. ]
[ sim@stormix.com ][ sim@netnation.com ]
[ Opinions expressed are not necessarily those of my employers. ]
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next prev parent reply other threads:[~2001-01-26 17:06 UTC|newest]
Thread overview: 84+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-01-25 5:43 hotmail not dealing with ECN Jeremy Hansen
2001-01-25 7:37 ` Juri Haberland
2001-01-25 9:06 ` David S. Miller
2001-01-26 1:12 ` Lincoln Dale
2001-01-25 23:31 ` H. Peter Anvin
2001-01-26 1:30 ` David S. Miller
2001-01-26 1:38 ` H. Peter Anvin
2001-01-26 1:43 ` David S. Miller
2001-01-26 1:49 ` H. Peter Anvin
2001-01-26 2:10 ` David S. Miller
2001-01-26 2:15 ` H. Peter Anvin
2001-01-26 8:54 ` Helge Hafting
2001-01-26 18:04 ` Rick Jones
2001-01-27 7:11 ` Rusty Russell
2001-01-31 10:56 ` Alan Cox
2001-01-27 4:10 ` David Wagner
2001-01-27 4:59 ` Brian May
2001-01-27 18:18 ` Frank v Waveren
2001-01-27 19:20 ` Gregory Maxwell
2001-01-27 19:22 ` Frank v Waveren
2001-01-27 19:58 ` Jamie Lokier
2001-01-27 20:14 ` Gregory Maxwell
2001-01-27 22:18 ` David Schwartz
2001-01-27 23:09 ` James Sutherland
2001-01-28 0:11 ` Gregory Maxwell
2001-01-28 1:10 ` Dominik Kubla
2001-01-28 4:35 ` [OT] " Gregory Maxwell
2001-01-28 12:57 ` Dominik Kubla
2001-01-28 15:45 ` Michael H. Warfield
2001-01-28 19:30 ` Gregory Maxwell
2001-01-28 22:16 ` Dominik Kubla
2001-01-28 8:48 ` James Sutherland
2001-01-28 0:06 ` Gregory Maxwell
2001-01-28 3:27 ` David Schwartz
2001-01-28 0:58 ` David Lang
2001-01-26 2:24 ` Johannes Erdfelt
2001-01-26 3:03 ` Brian May
2001-01-26 5:06 ` Jeremy M. Dolan
2001-01-26 14:04 ` Florian Weimer
2001-01-27 10:00 ` Rogier Wolff
2001-01-31 10:46 ` Alan Cox
2001-01-26 10:37 ` Matti Aarnio
2001-01-26 11:32 ` David S. Miller
2001-01-26 11:40 ` James Sutherland
2001-01-26 11:44 ` Lars Marowsky-Bree
2001-01-26 13:44 ` James Sutherland
2001-01-26 14:44 ` Lars Marowsky-Bree
2001-01-26 15:03 ` Jamie Lokier
2001-01-26 15:14 ` David S. Miller
2001-01-26 15:24 ` Jamie Lokier
2001-01-26 17:05 ` Simon Kirby [this message]
2001-01-26 18:12 ` ECN Andrea Arcangeli
2001-01-26 15:16 ` hotmail not dealing with ECN Dominik Kubla
2001-01-26 15:27 ` Jamie Lokier
2001-01-26 22:26 ` Dominik Kubla
2001-01-26 22:30 ` H. Peter Anvin
2001-01-26 15:35 ` Marian Jancar
2001-01-26 16:28 ` H. Peter Anvin
2001-01-28 1:59 ` Dax Kelson
2001-01-28 16:51 ` Jamie Lokier
2001-01-26 23:47 ` ECN -? Anything _I_ need to do to allow it? List User
2001-01-27 9:58 ` Matti Aarnio
2001-01-26 11:50 ` hotmail not dealing with ECN David S. Miller
2001-01-26 13:52 ` James Sutherland
2001-01-26 13:54 ` David S. Miller
2001-01-26 14:12 ` Jamie Lokier
2001-01-26 15:08 ` James Sutherland
2001-01-26 15:13 ` Lars Marowsky-Bree
2001-01-26 15:29 ` James Sutherland
2001-01-26 15:55 ` Chris Ricker
2001-01-26 18:37 ` Henning P. Schmiedehausen
2001-01-26 19:17 ` Matti Aarnio
2001-01-26 19:55 ` Jeremy M. Dolan
2001-01-26 15:34 ` Jamie Lokier
2001-01-26 17:37 ` Drago Goricanec
2001-01-26 14:11 ` Jamie Lokier
2001-01-26 18:19 ` Olaf Titz
2001-01-26 14:10 ` Jamie Lokier
2001-01-26 14:39 ` David S. Miller
2001-01-26 14:46 ` Lars Marowsky-Bree
2001-01-26 14:50 ` David S. Miller
2001-01-26 14:57 ` Jamie Lokier
2001-01-27 0:18 ` Thunder from the hill
2001-01-27 0:15 ` Thunder from the hill
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