carp on multiple interfaces

[Gergely CZUCZY]

Thanks for the answers. I must have missed that part of carp(4).

On Tue, Aug 28, 2007 at 11:44:29AM +0200, Daniel Hartmeier wrote:
> On Tue, Aug 28, 2007 at 11:29:31AM +0200, Gergely CZUCZY wrote:
> 
> > On a dual-carp scenario on two gateways when both the internal and
> > the external IFs are carp(4)'d in a master-slave way and a link
> > disconnects only on one side, would this trigger a carp failover
> > of the other interface also?
> 
> See carp(4)
> 
>    net.inet.carp.preempt     Allow virtual hosts to preempt each other.  It
>                              is also used to failover carp interfaces as a
>                              group.  When the option is enabled and one of
>                              the carp enabled physical interfaces goes down,
>                              advskew is changed to 240 on all carp inter-
>                              faces.  See also the first example.  Disabled
>                              by default.
> 
> i.e. for your scenario you'd set preempt=1 so all interfaces failover
> together, to avoid the problem you describe (which otherwise would
> occur, yes).
> 
> Daniel

Sincerely,

Gergely Czuczy
mailto: gergely.czuczy at harmless.hu

-- 
Weenies test. Geniuses solve problems that arise.
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