On Wed, 1 Jun 2016 18:11:54 +0200 David Riedl wrote:

> 
> > 4. As Ceph has lots of connections on lots of IP's and port's, LACP or
> > the Linux ALB mode should work really well to balance connections.
> Linux ALB Mode looks promising. Does that work with two switches? Each 
> server has 4 ports which are 'splitted' and connected to each switch.
>                  _
>                / _[switch]
>               / /      ||
> [server]         ||
>              \ \_     ||
>               \__[switch]
>
Will it work for the scenario above? 
Yes, and it will probably be better than the bonding mode you use now.
https://en.wikipedia.org/wiki/Link_aggregation

However if you read the article above, you will notice that it may NOT do
a fully automatic failover in case of switch failure, as it does its magic
by ARP trickery. 

LACP (with MC-LAG capable switches) will just work [TM].

Christian
-- 
Christian Balzer        Network/Systems Engineer                
ch...@gol.com           Global OnLine Japan/Rakuten Communications
http://www.gol.com/
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