Date: Sat, 31 Aug 2002 09:38:09 +1000 (EST) From: Steve Baxter <steve@pipenetworks.com> To: Attila Nagy <bra@fsn.hu> Cc: <freebsd-net@freebsd.org> Subject: Re: 802.1q trunks Message-ID: <Pine.LNX.4.33.0208310930380.28626-100000@internal.pipenetworks.com> In-Reply-To: <Pine.LNX.4.44.0208301811340.30064-100000@scribble.fsn.hu>
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Attila,
> Hello,
>
> > I was wondering if it is possible to do the following with a combination
> > of FreeSDB and netgraph. I am trying to tunnel multiple VLAN over an IP
> > network - bridging an 802.1q trunk as per the text diagram below. I am
> > trying to trasnport all of the vlans between the switches.
> If you could try this out, please share your experiences with me!
>
> I plan to do the same, but not yet got to the point where I have the
> actual testbed.
>
> I think there will be some problems, although. The first could be the
> length of the header. The VLAN stuff increases that, so if something
> checks for the correct Ethernet frame header size it will fail.
I presently use vtun and netgraph bridging.
I think one way to go may be to :
o define all vlans on the BSD boxes at either end
ifconfig vlan0 create
ifconfig vlan1 create
....
ifconfig vlan10 create
o bring the vlans at both ends up and bind them to the trunk where fxp0
is the interface plugged into the switch trunk port
ifconfig vlan0 vlan 20 vlandev fxp0
ifconfig vlan1 vlan 21 vlandev fxp0
....
ifconfig vlan10 vlan 30 vlandev fxp0
o then bridge all vlans together with the tap0 vtun interface.
--
Stephen Baxter
Director - PIPE Networks
phone : 07 3220 1100/ 0417 818 695
fax : 07 3220 1800
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