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Re: bonding vs 802.3ad/Cisco EtherChannel link agregation

To: Chris Friesen <cfriesen@xxxxxxxxxxxxxxxxxx>
Subject: Re: bonding vs 802.3ad/Cisco EtherChannel link agregation
From: Cacophonix <cacophonix@xxxxxxxxx>
Date: Fri, 13 Sep 2002 15:22:13 -0700 (PDT)
Cc: linux-net@xxxxxxxxxxxxxxx, netdev@xxxxxxxxxxx
In-reply-to: <3D81F64B.11182FB1@xxxxxxxxxxxxxxxxxx>
Sender: netdev-bounce@xxxxxxxxxxx
--- Chris Friesen <cfriesen@xxxxxxxxxxxxxxxxxx> wrote:
> "David S. Miller" wrote:
> > 
> > Bonding does not help with single stream performance.
> > You have to have multiple apps generating multiple streams
> > of data before you'll realize any improvement.
> > Therefore netpipe is a bad test for what you're doing.
> 
> This has always confused me.  Why doesn't the bonding driver try and spread 
> all the
> traffic over all
> the links?  This would allow for a single stream to use the full aggregate 
> bandwidth of
> all bonded
> links.

Because then you risk heavy packet reordering within an individual flow,
which can be detrimental in some cases.
--karthik


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