link aggregation - bundling 2 lagg interfaces together

Nikos Vassiliadis nvass at
Fri Feb 4 13:51:50 UTC 2011

On 2/4/2011 2:35 PM, Damien Fleuriot wrote:
> Even if I can't concatenate my 2 lagg interfaces into a failover one
> over the 2 switches, the new setup will still be an improvement.

Did you consider using STP? Are these switches RSTP capable?

You could create a low priority bridge acting as leaf node in the STP
domain. This will provide redundancy between different ethernet switches,
I just don't know if RSTP converges fast enough for your needs. Just be
a bit careful selecting the bridge's priority. A priority of 61440 will
be probably fine.

I am *almost* sure, that if_bridge works over if_laggs, perhaps you could
combine the two.

HTH, Nikos

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