Bonding (was: Re: [openib-general] Re: More on IPoIB Multicast)

[David M. Brean]

Doesn't the failover mechanism used by the bonding driver move the link 
layer address from the failed NIC to the standby NIC?  If so, the IPoIB 
link layer address contains a port GUID, so it may be a bit more complex 
than usual to port bonding over IPoIB.

I also thought that the bonding driver would be extended to support 
ethernet link aggregation (802.3ad) as the load balancing/failover 
mechanism at some point (I can't find schedule information).  This 
function, too, would not work over IPoIB.

-David

Hal Rosenstock wrote:

> On Thu, 2004-11-18 at 13:41, Nitin Hande wrote:
>
>> / But before that would like to hear from people about
>
> />/ various approaches.
> /
> Some vendors have implemented this by combining multiple HCA ports and
> failing over from one to the other. Bonding may provide striping (using
> both ports concurrently).
> I will need to read up on bonding to understand what it provides and
> compare it to what can be done under the IPoIB driver.
>
> -- Hal
>

>On Tue, 2004-11-09 at 12:07, Roland Dreier wrote:
>  
>
>>multiport bonding/failover
>>(although my feeling is that it would be better to extend the existing
>>bonding driver rather than trying to put this in the IPoIB driver), ....
>>    
>>
>
>I'm not clear what the tradeoffs / pros / cons of the two approaches
>(use the bonding driver (above the IPoIB driver) or implement it inside
>the IPoIB driver) would be.
>
>  
>