From mboxrd@z Thu Jan  1 00:00:00 1970
From: Paul Zirnik <tami@disconnected.de>
Date: Mon, 30 Jul 2007 18:46:05 +0000
Subject: Re: [LARTC] bandwidth aggregation between 2 hosts in the same subnet
Message-Id: <200707302046.06292.tami@disconnected.de>
List-Id: <lartc.vger.kernel.org>
References: <20070730141010.GA27667@p15145560.pureserver.info>
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To: lartc@vger.kernel.org

On Monday 30 July 2007 16:10, Ralf Gross wrote:
>
> My goal is to increase the bandwidth for a single tcp session between
> the two hosts for a backup job (per packet round robin?), not for
> multiple connections between many hosts. I know that I won't get 2 x
> 115Mb/s because of packet reordering, but 20-30% more that a single
> connection would be ok.
>
> I followed different HowTOs
>
> http://www.lartc.org/howto/lartc.rpdb.multiple-links.html#AEN298
> http://lartc.org/howto/lartc.loadshare.html
> or something like: ip route...equalize via...
>
> but I never got a higher transfer rate  between the two hosts than
> max 115Mb/s with benchmarks like netpipe or netio.

If you have different switches for each line i suggest the use
of "bonding" in balance-round-robin mode.  

+-------+  eth0  +--------+  eth0  +------+
| Host  |--------|switch 1|--------| Host | 
|       |        +--------+        |      |
|  A    |  eth1  +--------+  eth1  |   B  |
|       |--------|switch 2|--------|      |
+-------+        +--------+        +------+

See /usr/src/linux/Documentation/networking/bonding.txt


regards,
      Paul
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