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5.1 Virtual Bridges
When using SUSE Linux Enterprise Server the system configures one bridge for each
physical network device by default. For each virtual bridge, a physical ethernet device
is enslaved, and the IP address assigned to the bridge.
To add a new bridge, e.g. after installing an additional ethernet device, or to create a
bridge that is not connected to a real network, proceed as follows:
1 Start yast2 > Network Devices > Network Settings.
2 Click on the tab Overview and press Add.
3 Select Device Type Bridge. The parameter Configuration Name will be set to the
4 Either use Dynamic Address (DHCP) as selected by default, or assign a static IP
After the bridge is created, it may be used by any of the Xen VM Guest systems. A
purely virtual bridge without connection to a real network device is good to provide
fast network connections between different VM Guest systems. If you provide a DHCP
server on Domain0 that also defines routing information to the respective guest for the
bridge, the network setup of the respective VM Guest is simplified.
5.2 Network Devices for Guest
The Xen hypervisor is able to provide different types of network interfaces to the VM
Guest systems. The preferred network device should be a paravirtualized network inter-
face. This yields the highest transfer rates with the lowest requirements to the system.
Up to eight network interfaces may be provided for each VM Guest.
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Virtualization with Xen
next free number. Click on Next.
address to the bridge. Using Dynamic Address is only useful, when also assigning
a Device to the bridge that is connected to some DHCP server.
If you intend to create a virtual bridge that has no connection to a real ethernet
device, use Statically assigned IP Address. In this case, it is a good idea to use
addresses from the private IP address ranges, e.g. 192.168.x.x or 10.x.x.x.
Systems
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