RE: [Xen-users] dom0 networking disabled

["John Shen" <John.Shen@xxxxxxxx>]

peter, 
 
thank you so much for your response
 
i have bridge-util installed:
 
bridge-utils-1.1-2
 
though i do not see any bridge_ports command. is that supposed to be a command 
available if i have this package installed?
 
also, xen network-bridge script works fine and guest network works fine. so i 
am still lost.
 
[jshen@eduout3-host ~]$ rpm -ql bridge-utils-1.1-2
/usr/sbin/brctl
/usr/share/doc/bridge-utils-1.1
/usr/share/doc/bridge-utils-1.1/AUTHORS
/usr/share/doc/bridge-utils-1.1/COPYING
/usr/share/doc/bridge-utils-1.1/FAQ
/usr/share/doc/bridge-utils-1.1/HOWTO
/usr/share/man/man8/brctl.8.gz

John Shen 
System Coordinator, Online Information System
Student Affairs, University of California, Office of the President

________________________________

From: Petersson, Mats [mailto:Mats.Petersson@xxxxxxx]
Sent: Fri 3/16/2007 4:18 AM
To: John Shen; xen-users@xxxxxxxxxxxxxxxxxxx
Subject: RE: [Xen-users] dom0 networking disabled



> -----Original Message----- 
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of John Shen 
> Sent: 16 March 2007 11:05 
> To: xen-users@xxxxxxxxxxxxxxxxxxx 
> Subject: Re: [Xen-users] dom0 networking disabled 
> 
> jez, 
>  
> I have had the exactly the same problem in Fedora Core 6, 
> which uses /etc/sysconfig/network-scripts/ifcfg-eth0 etc to 
> configure nics. 
>  
> when i copied your code to ifcfg-xbr0 and tried ifup xbr0, i 
> got errors saying command bridge_ports not found. 

You probably need to install "bridge utils" (a package called 
"bridge-utils-<ver>.i386.rpm"). 

-- 
Mats 
>  
> i would appreciate it very much for your help. 
>  
> Message: 2 
> Date: Fri, 16 Mar 2007 05:40:13 +0100 
> From: jez <jez@xxxxxxxxxx> 
> Subject: Re: [Xen-users] dom0 networking disabled 
> To: xen-users@xxxxxxxxxxxxxxxxxxx 
> Message-ID: <20070316044013.GG18608@xxxxxxxxxxxxxxxxxx> 
> Content-Type: text/plain; charset=us-ascii 
> 
> On Thu, Mar 15, 2007 at 06:57:52PM -0500, kbrown@xxxxxxxxxxxxx wrote: 
> > 
> > I installed Debian Etch and the Xen (3.03) kernels / 
> binaries on a Dell 
> > server. It works fantastic with all the default 
> configurations with one 
> > strange flaw - as soon as the 
> /etc/xen/scripts/network-bridge script runs, 
> > dom0 loses all network connectivity. It is no longer 
> possible to ping in 
> > or out of the IP for the machine, and it throws no errors, 
> just sits on a 
> > blinking prompt. 
> > 
> > I have 4 domU machines running on 4 different IPs and they all work 
> > perfectly, with perfect connectivity. All the default 
> configuration files 
> > seem correct, and there are no firewall problems that I can 
> see. Nothing 
> > gets in or out of dom0, though, from anywhere. Running 
> > '/etc/xen/scripts/network-bridge stop' will return eth0 to 
> its former 
> > state and everything starts working again. 
> > 
> > So either I'm missing something very obvious, or something 
> is very wrong - 
> > I've attached several readouts below, but let me know if 
> any other info 
> > would be helpful in solving this thing, its had us stumped 
> and seems to be 
> > the only thing keeping us from putting this box into production. 
> > 
> > Thanks for any insight, 
> > 
> > Kirk 
> > 
> 
> Hi Kirk 
> 
> I've looked through the information that you posted but I can't see 
> anything wrong with any of it. 
> 
> I reckon that you should bypass the network-bridge script and just use 
> your own bridge set up in /etc/network/interfaces. It's 
> insanely easy to 
> set up, and if nothing else it might shed some more light on your 
> predicament. 
> 
> Here are the steps to take: 
> 
> 1. Change your /etc/network/interfaces to look like this. 
> Make sure you 
>    remove or comment out your previous eth0 entry: 
> 
>     auto lo 
>     iface lo inet loopback 
>    
>     auto xbr0 
>     iface xbr0 inet static 
>             address 146.6.135.253 
>             netmask 255.255.255.0 
>             gateway 146.6.135.1    # <- put your gateway here 
>             bridge_ports eth0   
> 
> 2. Change your xend-config.sxp to read: 
> 
>     (network-script network-dummy) 
>     (vif-script vif-bridge) 
> 
> 3. Double check that the settings for xbr0 in /etc/network/interfaces 
>    are exactly the same as eth0 previously had. Then when you are 
>    satisfied, reboot. 
> 
> If your computer resurfaces, and you can contact it over the network, 
> then the bridge is up. If not, well eh ... you're own your own mate! 
> 
> Now when you start each of the DomU's xen should put the vif*.0 
> interfaces on your bridge. All in all, I think you'll find that 
> this is a much more transparent configuration. 
> 
> Let us know how you get on. 
> 
> jez 
> 
> John Shen 
> System Coordinator, Online Information System 
> Student Affairs, University of California, Office of the President 
>  
> 


_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users