Xen users - Nov 2008 - How to setup multiple vif''s using different ethernet nic''s for DomU

Hi xen-users,

My system has two gigabit nic''s. One of them(eth0)  is configured to
access
the network on dom0.
I want to exclusively use eth1 for the use of my DomU virtual machine.

I have been reading the xen-netorking wiki page. But I could not get a
specific sequence of steps to get this setup running.
Appreciate if you can point me to any doc on the steps.

Thank You,

Regards,
Karthik


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> I have been reading the xen-netorking wiki page. But I could not get a
> specific sequence of steps to get this setup running.
> Appreciate if you can point me to any doc on the steps.

Maybe this will work:
http://idolinux.blogspot.com/2008/08/xen-add-network-bridge-for-eth1.html

/Peter


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On Fri, 2008-11-14 at 14:54 +0700, Peter Privat wrote:
> > I have been reading the xen-netorking wiki page. But I could not get
> > a specific sequence of steps to get this setup running.
> > Appreciate if you can point me to any doc on the steps.
> 
> 
> Maybe this will work:
> http://idolinux.blogspot.com/2008/08/xen-add-network-bridge-for-eth1.html
> 

try this:

you need 2 bridge interfaces:
xenbr0 = eth0
xenbr1 = eth1

create a new script with the following lines: (ex: multiplebridge.sh)
in /etc/xen/scripts/

#!/bin/sh
dir=$(dirname "$0")
"$dir/network-bridge" "$@" vifnum=0 netdev=eth0
bridge=xenbr0
"$dir/network-bridge" "$@" vifnum=1 netdev=eth1
bridge=xenbr1

make the script executable (chmod +x /etc/xen/scripts/multiplebridge.sh)

modify /etc/xen/xend-config.sxp
change the line: 
(network-script network-bridge)
to
(network-script multiplebridge.sh)

modify your virtual machine to use the new bridge interface:
ex:
vif = [ ''bridge=xenbr1'', ]

Hope this helps.

/Peter


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Thanks Peter for the steps.

The xenbr1 bridge however is not connecting to the physical device.

brctl show
bridge name     bridge id               STP enabled     interfaces
eth0            8000.0018fe7846b6       no              vif5.0
                                                        peth0
xenbr1          8000.feffffffffff       no              vif5.1


Any more configurations we missed out?

Thanks,
karthik


On Fri, Nov 14, 2008 at 1:35 PM, Peter Privat
<peter.privat@breilind.com>wrote:
>  On Fri, 2008-11-14 at 14:54 +0700, Peter Privat wrote:
>
>  I have been reading the xen-netorking wiki page. But I could not get a
> specific sequence of steps to get this setup running.
> Appreciate if you can point me to any doc on the steps.
>
>
> Maybe this will work:
> http://idolinux.blogspot.com/2008/08/xen-add-network-bridge-for-eth1.html
>
>
> try this:
>
> you need 2 bridge interfaces:
> xenbr0 = eth0
> xenbr1 = eth1
>
> create a new script with the following lines: (ex: multiplebridge.sh) in
> /etc/xen/scripts/
>
> #!/bin/sh
> dir=$(dirname "$0")
> "$dir/network-bridge" "$@" vifnum=0 netdev=eth0
bridge=xenbr0
> "$dir/network-bridge" "$@" vifnum=1 netdev=eth1
bridge=xenbr1
>
> make the script executable (chmod +x /etc/xen/scripts/multiplebridge.sh)
>
> modify /etc/xen/xend-config.sxp
> change the line:
> (network-script network-bridge)
> to
> (network-script multiplebridge.sh)
>
> modify your virtual machine to use the new bridge interface:
> ex:
> vif = [ ''bridge=xenbr1'', ]
>
> Hope this helps.
>
> /Peter
>

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xen rkar wrote:
>My system has two gigabit nic''s. One of them(eth0)  is configured
to
>access the network on dom0.
>I want to exclusively use eth1 for the use of my DomU virtual machine.
I''ve done this at home for my gateway - I run a router in a DomU and 
it has exclusive use of the ethernet card with the external 
connection. Lookup pciback.hide, this is my boot entry (the pciback 
statement is part of the module line) :

title		Xen 3.0.3-1-amd64 / Debian 2.6.18-6-xen-amd64 - Ext Eth hidden
root		(hd0,0)
kernel		/xen-3.0.3-1-amd64.gz
module		/vmlinuz-2.6.18-6-xen-amd64 root=/dev/sda3 ro 
console=tty0 pciback.hide=(01:07.0)
module		/initrd.img-2.6.18-6-xen-amd64


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