Hi,

thank you all, it seems to work now.

just for the records, my configuration:

master carp interfaces are configured like this: 
vhid 1 pass foo carpdev vlan3 192.168.0.1 192.168.0.255 netmask 
255.255.255.0 up

and the backup interfaces are configured like this:
vhid 1 pass foo carpdev vlan3 advskew 20 192.168.0.1 192.168.0.255 
netmask 255.255.255.0 up

net.inet.carp.preempt=1

darn, after reading the carp man page again, there it is stated how it 
works. I only remembered the advskew description from the ifconfig man 
page, there it is only mentioned to skew the advbase, no word about take 
over all interfaces with net.inet.carp.preempt=1 enabled.

nevertheless, thanks a lot for all replies.


> --- Urspr|ngliche Nachricht ---
> Von: Marco Pfatschbacher <[EMAIL PROTECTED]>
> An: Otto Moerbeek <[EMAIL PROTECTED]>
> Kopie: Lars Weste <[EMAIL PROTECTED]>, [email protected]
> Betreff: Re: problems with carp and vlans
> Datum: Thu, 20 Apr 2006 18:07:40 +0200
> 
> On Thu, Apr 20, 2006 at 05:42:20PM +0200, Otto Moerbeek wrote:
> > 
> > On Thu, 20 Apr 2006, Lars Weste wrote:
> > 
> > > Hi,
> > > 
> > > yes, i am running 3.8 -stable, and the backup has a higher advbase
> than 
> > 
> > err, for preemption to work, the advskew should be higher on the 
backup.
> > At least, that is what carp(4) says.
> 
> Yes,
> 
> actually you should have have an identical advbase, but an
> higher advskew on the backup.
> If the master box looses one of its links, it bumps the advskew
> to 240 so that the backup has a chance to take over all carp 
interfaces.
> 
> > > the master. Nevertheless, my problem doesn't seem to be the vlan 
> > > interface itself, it is just a general problem keep the interfaces 
in 
> > > sync, as ryan describes here:
> > > 
> > > http://www.countersiege.com/doc/ifstated/
> 
> That document describes the carp behaviour at the time of 3.5.
> Ever since then, it takes care for about that by itself.
> 
> > > so I am wondering whether I have to use ifstated, and to check all 
> > > interfaces, or whether there is some new feature, that will do the
> trick.
> 
> The latter.
> Ifstated is useful for some more advanced monitoring or reporting 
cases.
> 

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