2008/12/12 ropers <rop...@gmail.com>

> 2008/12/12 Stephan A. Rickauer <stephan.ricka...@ini.phys.ethz.ch>:
> > On Fri, 2008-12-12 at 14:11 +0100, ropers wrote:
> >> What link are you sending the CARP advertisements over? E.g. do you
> >> use a dedicated link (separate NICs and cable connection between the
> >> CARPed machines) or do you send the CARP advertisements over existing
> >> other links? (Which? Please illustrate.)
> >
> > I didn't know I had a choice what link to send the ads over. In other
> > words, the CARP ads are send over the corresponding underlying, physical
> > interfaces, without a dedicated link.
> >
> > e.g.: em0.a/em0.b=carp0 => ads send over em0's
> >
> > Can I use 'carppeer' to specify *one* dedicated link for all the other
> > CARP interfaces?
> >
> > We do have a dedicated link for pfsync, though.
>
> Maybe --possibly-- my own understanding is sorely lacking. Let me try
> to explain. The following requires a non-proportional font:
>
> Is this what your CARP setup looks like?
>
>     external network
>    |                |
> OpenBSD#0        OpenBSD#1
>    |                |
>     internal network
>
> If so, are the CARP advertisements being sent via the external or
> internal network?
>
> OTOH, if you have a dedicated link, maybe your setup looks like this?
>
>     external network
>    |                |
> OpenBSD#0--------OpenBSD#1
>    |                |
>     internal network
>
> I was under the impression that it should be possible to exchange CARP
> advertisements via the dedicated link (--------), though I have to
> admit that I haven't actually built such a network yet -- I'm planning
> to do that shortly. Maybe others can weigh in?


This wouldn't make sense with CARP. You'd only use a dedicated link for
something such as pfsync.

-- 
Liam J. Foy
liamj...@netbsd.org

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