Re: [Xen-devel] Bridged Networking in Dom 0 and Virtual NIC in Windows XP Home 32-bit HVM Guest

["Mr. Teo En Ming (Zhang Enming)" <enming.teo@xxxxxxxxxxxxxxx>]

Dear Caz,

I have the Intel Corporation 82567LM-3 Gigabit Network Connection on my 
Intel DQ45CB Desktop Board.
There is only one network interface on my computer and it is eth0.

When I start xend, it creates ethernet bridge eth0. My Dom 0 and Win XP 
Dom U share the same ethernet bridge.
On Dom 0, IP address is configured on the bridge eth0. In my Win XP dom 
U configuration, I specified vif = [ 'bridge=eth0' ]
So my Dom 0 and Dom U are sharing the same bridge, and hence the same 
physical network card.
--
Mr. Teo En Ming (Zhang Enming) Dip(Mechatronics Engineering) 
BEng(Hons)(Mechanical Engineering)
Technical Support Engineer
Information Technology Department
Asiasoft Online Pte Ltd
Tampines Central 1 #04-01 Tampines Plaza
Singapore 529541
Republic of Singapore
Mobile: +65-9648-9798
MSN: teoenming@xxxxxxxxxxx
Alma Maters: Singapore Polytechnic, National University of Singapore



On 08/24/2009 12:39 AM, Caz Yokoyama wrote:
> Hello Teo,
> What type of network device do you have? Virtual network or shared physical
> device? If you have virtual network, I suspect your domU and dom0 are in
> their own sub-network and the domU is not visible to anyone other than dom0.
> If you have shared physical device, root cause is something else.
> -caz
>
> -----Original Message-----
> From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
> [mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Mr. Teo En Ming
> (Zhang Enming)
> Sent: Sunday, August 23, 2009 9:09 AM
> To: xen-devel@xxxxxxxxxxxxxxxxxxx
> Subject: [Xen-devel] Bridged Networking in Dom 0 and Virtual NIC in Windows
> XP Home 32-bit HVM Guest
>
> Hi,
>
> My Intel DQ45CB motherboard BIOS has VT-d enabled. I am using Xen 3.4.1
> and Jeremy Fitzhardinge's paravirt ops dom 0 kernels 2.6.30-rc3 and
> 2.6.31-rc6.
>
> When Xen boots up, it says that I/O virtualisation is enabled (VT-d
> working).
>
> I have Windows XP Home 32-bit installed as a HVM guest. I am not trying
> direct access to physical NIC yet.
>
> I am still using virtual NIC in Win XP Home.
>
> When I configured IP address in Win XP HVM guest, I can ping the IP in
> Dom 0. In Dom 0, I can also ping the IP of my Win XP domU.
>
> However, other network devices/computers in the same LAN cannot see the
> IP of Win XP domU. Only Dom 0 can see. Similary, Win XP dom U can only
> talk to Dom 0 and cannot talk to other computers in the network.
>
> Why is this so?
>
>    


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