Xen users - Feb 2011 - Xen network-route : mix Public and Private IP on a Front-Back architecture

Hi everyone,

I need your help. I would like to create a front-back architecture with Xen.
My physical server has only one public Interface.

Currently, my DOM0 is using the network-route  configuration:

*(network-script ''network-route netdev=eth0'')
(vif-script     vif-route)*


My DOM1 is configured with a public IP + proxy_arp with DOM0. DOM1 can
connect any address on  Internet and is accessible from Internet too.
Now i would like to add a private IP address  on DOM1 in order to comunicate
with DOM2, 3 and 4 who is configured with just a private IP address.



                                                             -----(private
IP) DOM4

|

|
Physical Eth0 (Public IP1)  --- DOM0 ----------- (public IP2 ) DOM1 (private
IP1) --------------(private IP2) DOM2

|

                                                           |

  -----(private IP) DOM3

To finish, i would like  DOM2, 3 and 4 to connect Internet via  DOM1 IP
public Address.

Thanks for your help.

Lyes


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On Sun, Feb 27, 2011 at 9:36 PM, Christophe Bailleux
<ch.bailleux@gmail.com> wrote:
> Hi everyone,
>
> I need your help. I would like to create a front-back architecture with
Xen.
> My physical server has only one public Interface.
>
> Currently, my DOM0 is using the network-route  configuration:
>
> (network-script ''network-route netdev=eth0'')
> (vif-script     vif-route)
>
>
> My DOM1 is configured with a public IP + proxy_arp with DOM0. DOM1 can
> connect any address on  Internet and is accessible from Internet too.
> Now i would like to add a private IP address  on DOM1 in order to
comunicate
> with DOM2, 3 and 4 who is configured with just a private IP address.
The easy way is to use bridging setup, but create bridges manually.
Then configure dom1 to do MASQUARADE.

-- 
Fajar

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Thanks, but how can i use routed and briged interface in same time ?
My idea was to use a dummy0 interface on DOM0 and bridge it  DOM. But i
don''t know how to configure it.

Thanks.


On Sun, Feb 27, 2011 at 3:48 PM, Fajar A. Nugraha <list@fajar.net> wrote:
> On Sun, Feb 27, 2011 at 9:36 PM, Christophe Bailleux
> <ch.bailleux@gmail.com> wrote:
> > Hi everyone,
> >
> > I need your help. I would like to create a front-back architecture
with
> Xen.
> > My physical server has only one public Interface.
> >
> > Currently, my DOM0 is using the network-route  configuration:
> >
> > (network-script ''network-route netdev=eth0'')
> > (vif-script     vif-route)
> >
> >
> > My DOM1 is configured with a public IP + proxy_arp with DOM0. DOM1 can
> > connect any address on  Internet and is accessible from Internet too.
> > Now i would like to add a private IP address  on DOM1 in order to
> comunicate
> > with DOM2, 3 and 4 who is configured with just a private IP address.
>
> The easy way is to use bridging setup, but create bridges manually.
> Then configure dom1 to do MASQUARADE.
>
> --
> Fajar
>

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On Mon, Feb 28, 2011 at 2:01 AM, Christophe Bailleux
<ch.bailleux@gmail.com> wrote:
> Thanks, but how can i use routed and briged interface in same time ?
I was thinking more of "dump routing entirely, use bridge all the way"
... but you should be able to just add a "script=vif-bridge" on each
vif config line that will use bridging, and setup the bridge manually
using OS script file.
> My idea was to use a dummy0 interface on DOM0 and bridge it  DOM. But i
> don''t know how to configure it.
Look at your distro''s documentation. Example for Debian:
http://wiki.debian.org/BridgeNetworkConnections (but you don''t need to
add "bridge_ports", since you''ll be using dummy bridge).

-- 
Fajar

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