[46709] in North American Network Operators' Group
Re: packet reordering at exchange points
daemon@ATHENA.MIT.EDU (Richard A Steenbergen)
Mon Apr 8 20:15:12 2002
Date: Mon, 8 Apr 2002 19:45:16 -0400
From: Richard A Steenbergen <ras@e-gerbil.net>
To: "E.B. Dreger" <eddy+public+spam@noc.everquick.net>
Cc: Iljitsch van Beijnum <iljitsch@muada.com>,
Paul Vixie <paul@vix.com>, nanog@merit.edu
Message-ID: <20020408234516.GQ523@overlord.e-gerbil.net>
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On Mon, Apr 08, 2002 at 11:19:56PM +0000, E.B. Dreger wrote:
>
> > But how is packet reordering on two parallell gigabit interfaces ever
> > going to translate into reordered packets for individual streams? Packets
>
> Queue depths. Varying paths. IIRC, 802.3ad DOES NOT allow round
> robin distribution; it uses hashes. Sure, hashed distribution
> isn't perfect. But it's better than "perfect" distribution with
> added latency and/or retransmits out the wazoo.
You don't even need varying paths to create a desynch, all you need is
varying size packets.
--
Richard A Steenbergen <ras@e-gerbil.net> http://www.e-gerbil.net/ras
PGP Key ID: 0x138EA177 (67 29 D7 BC E8 18 3E DA B2 46 B3 D8 14 36 FE B6)
