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Re: [Xen-devel] Bridged Networking in Dom 0 and Virtual NIC in Windows X

To: enming.teo@xxxxxxxxxxxxxxx
Subject: Re: [Xen-devel] Bridged Networking in Dom 0 and Virtual NIC in Windows XP Home 32-bit HVM Guest
From: "Mr. Teo En Ming (Zhang Enming)" <enming.teo@xxxxxxxxxxxxxxx>
Date: Mon, 24 Aug 2009 00:40:06 +0800
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Just to add, the ethernet bridge on Dom 0 is eth0 and not xenbr0, virbr0, or 
anything else.

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 12:08 AM, Mr. Teo En Ming (Zhang Enming) wrote:

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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