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Date: Tue, 27 Aug 2002 21:27:38 +0200
From: Willy Tarreau <willy@w.ods.org>
To: Steffen Persvold <sp@scali.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: your mail
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On Tue, Aug 27, 2002 at 08:22:03PM +0200, Steffen Persvold wrote:
 
> I have an idea that this happens because the packets are comming out of 
> order into the receiving node (i.e the bonding device is alternating 
> between each interface when sending, and when the receiving node gets the 
> packets it is possible that the first interface get packets number 0, 2, 
> 4 and 6 in one interrupt and queues it to the network stack before packet 
> 1, 3, 5 is handled on the other interface).

You pointed your finger on this exact common problem.
You can use the XOR bonding mode (modprobe bonding mode=2), which uses a
hash of mac addresses to select the outgoing interface. This is interesting
if you have lots of L2 hosts on the same network switch.

Or if you have a few hosts on the same switch, you'd better use the "nexthop"
parameter of "ip route". IIRC, it should be something like :
  ip route add <destination> nexthop dev eth0 nexthop dev eth1
but read the help, I'm not certain.

Cheers,
Willy

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