[CentOS] Configure LAGG Interface?

[Cal Sawyer]

In my experience, LAG/LACP won't provide aggregatation, only failover
and fault tolerance.  For link aggregation, you don't need to configure
the switch ports - just set bonding to mode=6 for balanced
transmit/receive and plug up the the NICs to a group of ports on the
switch.  However, balance-alb doesn't help with single stream rsync/FTP
sessions, etc, but helps a lot with concurrent transmits/receives as
encountered in typical fileserver scenarios.

- c

On 06/08/12 17:00, centos-request at centos.org wrote:
> Message: 30
> Date: Mon, 06 Aug 2012 13:56:41 +0100
> From: Giles Coochey <giles at coochey.net>
> Subject: Re: [CentOS] Configure LAGG Interface?
> To: centos at centos.org
> Message-ID: <501FBF09.5080206 at coochey.net>
> Content-Type: text/plain; charset="iso-8859-1"
>
> On 02/08/2012 02:00, Tim Nelson wrote:
>> > ----- Original Message -----
>>> >> On 01.08.2012 21:17, Tim Nelson wrote:
>>>> >>> Greetings- I'd like to configure multiple copper NICs on a server
>>>> >>> running CentOS 6.2 in a LAGG configuration for better throughput to
>>>> >>> the core switch. After quite a bit of searching, I'm not seeing
>>>> >>> anything of the sort. Is LAGG specific to the BSD world and the HP
>>>> >>> switches I'm running? Or, does it go by a different name? Bonding
>>>> >>> perhaps? If so, is bonding compatible with LAGG?
>>>> >>>
>>>> >>> --Tim
>>>> >>> _______________________________________________
>>>> >>> CentOS mailing list
>>>> >>> CentOS at centos.org
>>>> >>> http://lists.centos.org/mailman/listinfo/centos
>>> >> Hi Tim,
>>> >>
>>> >> In Centos you would be doing "nic bonding", it's the same thing.
>>> >>
>> > The big question though, can I bond two NICs on a CentOS system, and connect those interfaces to two LAGG ports on my switches?
>> >
>> >
> http://centoshelp.org/networking/nic-bonding/
>
> Configure the switches as a LACP port-channel, you probably want to use 
> a host mode (e.g. silent) configuration.
>
> -- Regards, Giles Coochey, CCNA, CCNAS NetSecSpec Ltd +44 (0) 7983
> 877438 http://www.coochey.net http://www.netsecspec.co.uk
> giles at coochey.net