RE: [Xen-users] Conflict with Xen bridge?

["Marquez, Anthony" <amarquez@xxxxxxxxxxxxx>]

Daniel, I am new to using Linux and Xen but here is what I have had to do to 
get Xebr0 working.

When you do the install, you are asked to use DHCP or manually input and IP. 
When using DHCP I couldn't get Xenbro to come up as an option when I started 
using Paravirtualization (gui one) as an option. Only option I had was VIRTUAL 
and using the vifxx option. When I rebuilt using an assigned (manual) IP Xenbr0 
became an option and everything worked - each VM was assigned an IP and could 
be seen outside our firewall.

I have rebuilt these machines about 20 times (one PE2950 housing three virtual 
RHEL5 OS connected to an EMC array)now since we are migrating off our IBM 
mainframe to a RedHat/Jboss/MySQL alternative. So while programmers are working 
on Java I have been playing with options for Linux/RHEL5.1 and Xen connected to 
a EMC CX-10c. 

A newbie here but hope that helps.

Tony

-----Original Message-----
From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
[mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Daniel Bareiro
Sent: Saturday, March 29, 2008 1:06 PM
To: Xen-Users
Subject: Re: [Xen-users] Conflict with Xen bridge?

On Thursday, 27 March 2008 11:35:32 +0100, Marc Patino Gómez wrote:

> Hi,

Hi Marc.

> About the wrapper script of network-bridge... I don't understand why 
> it  don't work, try to execute it by hand

> /etc/xen/scripts/network-bridge start bridge=xenbr0 vifnum=0

> ... and use brctl command to add, del interfaces and bridges...

> Anyway, to debug the errors I will go step by step:

> ----Important-----:
> Think that your config in /etc/network/interfaces your eth0 the pppoe 
> interface is vif0.0 in dom0 ! and your are attaching it to xenbr0 
> bridge with peth1 (eth1 physical interface)

> Think about it, at the moment I don't have much time to give you a 
> more detailed answer :(.

Mmmm... executing by hand the previous line, I got the following output.
I suspect that it is the cause because of which the wrapper script don't work.

ifdown: interface eth0 not configured
SIOCSIFNAME: Device or resource busy

But vifnum=1 causes that it loses the connectivity with LAN and Internet. Some 
idea about why it can happen?

> To do your scenario I will create 2  bridges and the via iptables make 
> the FW , nat ...

> Tell me about your progress, ;)

Thanks for your time. I will try to read about advanced networking 
configuration with Xen. But I will accept any suggestion or comment that you 
can give me :-)

Regards,
Daniel
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