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R: Re: [Xen-users] bridge and tcpdump

from [rmarfisi@xxxxxxxxx]

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To:	<nice@xxxxxxxxxxxxxxx>, xen <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject:	R: Re: [Xen-users] bridge and tcpdump
From:	"rmarfisi@xxxxxxxxx" <rmarfisi@xxxxxxxxx>
Date:	Wed, 17 Sep 2008 18:10:26 +0200 (CEST)
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>If you listen on dom1 and the ping dom3 from dom2 then you mustn't see
>that 
traffic, because xen networking is not based on virtual hubs (which
>simly 
relay every packet to every port), but it's based on virtual
>switches, and 
switches intelligently forward the packets, only for the
>recipient. In this 
case dom1 is neither the sender nor the recipient

thank
if i want capture all 
traffic form a domU, how to do it?


>Try to listen on dom2 (e.g. with "tcpdump 
-n -i eth0") and then ping
>dom2 from dom3. Now you should really see 
something.

yes, i osserved it in the past

thanks a lot for yours attenction

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