netdev - Re: Channel bonding with e1000

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Message-ID: <15938.1220625453@death.nxdomain.ibm.com>
Date:	Fri, 05 Sep 2008 07:37:33 -0700
From:	Jay Vosburgh <fubar@...ibm.com>
To:	Carsten Aulbert <carsten.aulbert@....mpg.de>
cc:	netdev@...r.kernel.org
Subject: Re: Channel bonding with e1000

Carsten Aulbert <carsten.aulbert@....mpg.de> wrote:
[...]
>On a few data servers we intend to do channel bonding. The boxes have
>two NICs on the motherboard and two extra ones on an expansion card:
>
>04:00.0 Ethernet controller: Intel Corporation 631xESB/632xESB DPT LAN
>Controller Copper (rev 01)
>04:00.1 Ethernet controller: Intel Corporation 631xESB/632xESB DPT LAN
>Controller Copper (rev 01)
>05:02.0 Ethernet controller: Intel Corporation 82546GB Gigabit Ethernet
>Controller (rev 03)
>05:02.1 Ethernet controller: Intel Corporation 82546GB Gigabit Ethernet
>Controller (rev 03)
>
>My simple question would be: Does it matter which two ports I can use to
>channel together when using in a set-up with MTU=9000?

	Nope.

	If you're concerned about tolerance to failure, you may want to
pick one port from each (one built-in port, one from the card) so if the
expansion card dies you're not totally cut off.

	-J

---
	-Jay Vosburgh, IBM Linux Technology Center, fubar@...ibm.com
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