Date: Sat, 13 Oct 2007 09:46:12 +1300 From: Andrew Thompson <thompsa@FreeBSD.org> To: Erik Osterholm <freebsd-lists-erik@erikosterholm.org>, Jon Otterholm <jon.otterholm@ide.resurscentrum.se>, freebsd-net@freebsd.org Subject: Re: if_bridge on a vlan-trunk Message-ID: <20071012204612.GC78305@heff.fud.org.nz> In-Reply-To: <20071012195944.GA77625@aleph.cepheid.org> References: <470E7C97.3080804@ide.resurscentrum.se> <20071011194653.GB40950@heff.fud.org.nz> <20071012195944.GA77625@aleph.cepheid.org>
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On Fri, Oct 12, 2007 at 02:59:44PM -0500, Erik Osterholm wrote: > On Fri, Oct 12, 2007 at 08:46:53AM +1300, Andrew Thompson wrote: > > 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) > > Does anything special need to be done in order for this to work? I've > got a machine running a recent snapshot (7.0-CURRENT-200709) where it > simply isn't bridging the trunk. It looks like ARP isn't getting > passed. If I remove the FreeBSD box from the line, everything works. > If I explicitly create VLANs interfaces on the FreeBSD box and just > bridge the VLAN interfaces, it works. > It doesnt need anything special to work. If you go 'ifconfig bridge0 addr' it should show the forwarding table with the correct vlan. 00:11:bb:48:ca:02 Vlana100 em0 1200 flags=0<> Can you tcpdump on em0, em1 and bridge0 to see where the arp is being dropped. cheers, Andrew
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