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[Xen-users] Re: .1q trunks

To: Mike Richardson <mike.richardson@xxxxxxxxxxxxxxxx>
Subject: [Xen-users] Re: .1q trunks
From: Ferenc Wagner <wferi@xxxxxxx>
Date: 2011年10月17日 22:26:09 +0200
Cc: xen-users@xxxxxxxxxxxxxxxxxxx
Delivery-date: 2011年10月17日 13:28:00 -0700
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In-reply-to: <20111005081704.GP3556@xxxxxxxxxxxxxxxx> (Mike Richardson's message of "Wed, 5 Oct 2011 09:17:04 +0100")
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Mike Richardson <mike.richardson@xxxxxxxxxxxxxxxx> writes:
> The Dom0 has two physical interfaces, one as an 'access' port (I'll be
> using Cisco terminology) and the other is a .1q trunk for up to 150
> VLANs (don't ask, long story). Some of the VLANs on this trunk are for
> managing the DomUs and as such I've created interfaces and bridges for
> each. The rest I want to pass on, as a trunk, to a DomU.
>
> The DomU will have a management interface which connects to one of the
> above management bridges and it should also have an interface
> connected to the trunk. I want to be able to listen to all the
> broadcast traffic on that trunk.
You forgot to tell your precise problem. However, if you put a trunk
interface (eth1) into a bridge, the bridge will suck up ALL packets
(tagged and native) unless stopped by an appropriate ebtables rule.
This manifests as NO traffic getting to the tagged interface (eth1.1).
-- 
Regards,
Feri.
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