Re: [Xen-users] routed network (not only one vif needed?) (corrected mail)

["Sueveges Gyoergy" <georg@xxxxxxxxxxxx>]

Hi

 Thnx for the answer.

So do you think I need bridged network?
I have the dom0 (having public IP, and being also part of the private  
network) and ths DOMU-s as the subnetwork (192.168.0.x).
I don't understand what will be happened with the network interfaces at  
briding:
 - There will be an xen-br0 interface created with my  DOM0's (public) IP  
address
 - When starting my DOM1 a mew VIF interface on DOM0 will be created, but  
there will be no interface created on DOM1.
What I would except: having one virtual interface on dom0, that all the  
domU could see as gateway. On  DOMu there should be an
eth0 everywehere where I would set the appropriate IP adresses, gateways..  
So with that I'd have a virtual router on DOM0. Maybe
is this concept worng?

How schould I live with the interfaces created by xen bridge scripts in  
this case?
Thnx
 George





On Tue, 25 Oct 2005 21:00:56 +0200, Dirk H. Schulz  
<dirk.schulz@xxxxxxxxxxxxx> wrote:
Hi Georg,

georg@xxxxxxxxxxxx schrieb:

Hi!

Now I tried to set up xen for routed network. I didn't understand why so
much vifs will be create, as much as domains I have.
My routed network consists of the domain0 (with public IP), and domainU-s  
as the subnetwork (192.168.0.x)
So I modified the vif-route script in order to have only one vif for all
domainsU-s (with ip 192.168.0.254).  But in this case only the domainU
works, for that I created the vif. So I need more VIF in order to have
networking also in all my DomainU-s? all of these Vifs should have the
same IP address.
Why should that make sense? I do not see what you are after with this.

Routed networking implies that every domU is a subnet of its own, so it  
has to have an address space (not only a single address)
 of its own. Dom0 has to have a routing table that connects the dom0 NIC  
with the the virtual subnets that the domUs are.
(My subdomains are in one private network (192.168.0.1))

Why don't you use bridging, then?

Dirk

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