Date: Tue, 28 Aug 2007 11:44:29 +0200 From: Daniel Hartmeier <daniel@benzedrine.cx> To: Gergely CZUCZY <phoemix@harmless.hu> Cc: freebsd-net@freebsd.org Subject: Re: carp on multiple interfaces Message-ID: <20070828094429.GF18273@insomnia.benzedrine.cx> In-Reply-To: <20070828092931.GA18240@harmless.hu> References: <20070828092931.GA18240@harmless.hu>
next in thread | previous in thread | raw e-mail | index | archive | help
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
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20070828094429.GF18273>