Subject: Re: Is 802.3ad mode in bonding useful ?

From: WeipingPan <[email-masked]>
Date: Fri, 29 Apr 2011 11:17:48 +0800

On 04/28/2011 08:21 PM, Neil Horman wrote:
> On Thu, Apr 28, 2011 at 03:33:50PM +0800, WeipingPan wrote:
>> Hi, all,
>>
>> 802.3ad mode in bonding implements 802.3ad standard.
>>
>> I am just wondering  802.3ad mode is useful,
>> since  bonding has many modes like balance-rr, active-backup, etc.
>>
> Yes, of course its usefull.  For switches which support 802.3ad, this mode
> allows for both peers to understand that the links in the bond are acting as an
> aggregate, which makes it easier to prevent things like inadvertently looped
> back frames, for which the other modes have to have all sorts of hacks to
> prevent.
What is looped back frames here ?
I didn't see any special code to handle looped back frames in other 
modes in bonding,
can you take an example ?

thanks
Weiping Pan

> Neil