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Date:      Fri, 12 Oct 2007 08:46:53 +1300
From:      Andrew Thompson <thompsa@FreeBSD.org>
To:        Jon Otterholm <jon.otterholm@ide.resurscentrum.se>
Cc:        freebsd-net@freebsd.org
Subject:   Re: if_bridge on a vlan-trunk
Message-ID:  <20071011194653.GB40950@heff.fud.org.nz>
In-Reply-To: <470E7C97.3080804@ide.resurscentrum.se>
References:  <470E7C97.3080804@ide.resurscentrum.se>

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On Thu, Oct 11, 2007 at 09:42:15PM +0200, Jon Otterholm wrote:
> Hi.
> 
> Does anyone know if it is possible to put a transparent bridge on a
> vlan-trunk?

As from rev1.100 of if_bridge back in June it will correctly use the
vlan number if the forwarding table so it is now possible to bridge a
vlan trunk. Is this all you need? (7+ only, it wont be in 6-stable)


> A working solution is to create a bridge for each vlan, but I would
> prefer to have one bridge instead of several hundreds of them.
> 
> Is this doable?
> 
> In my lab environment I use a dual em(4) nic.
> 
> What would the drawbacks be if I create ~1500 if_bridge and attached
> each vlan-sub-if from each physical interface to their own bridge? Would
> this work?
> 
> //Jon
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