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Re: [DRBD-user] bond for drbd identical performance with one link down

From: Bart Coninckx <bart.coninckx_at_nospam>
Date: Thu May 20 2010 - 19:01:38 GMT
To: drbd-user@lists.linbit.com

On Thursday 20 May 2010 20:39:40 Ben Timby wrote:
> On Thu, May 20, 2010 at 2:15 PM, Lee Riemer <lriemer@bestline.net> wrote:
> > Do you need multiple destination IPs to properly balance? It is my
> > understanding that a single stream will only traverse a single link.
> > Hence the MPIO requirement.
>
> Actually, balance-rr is the only mode that can stripe a single packet
> stream across multiple interfaces. However, it requires the
> cooperation of your switch.
>
> http://www.linuxfoundation.org/collaborate/workgroups/networking/bonding#Co
> nfiguring_Bonding_for_Maximum_Throughput
>
> "This mode requires the switch to have the appropriate ports
> configured for "etherchannel" or "trunking."
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Mmm, odd. I read in a couple of posts balance-rr is the best mode for direct
connections (as I'm using them, i.e. without switch).

I did do some test with a HP Procurve 1810s switch though (enabled trunking on
every pair of ports) but this actually resulted in even lower values.

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