Novell SUSE Linux Enterprise Server, Manual

Page: 18 / 98

2.3.2 Setting a Minimum Amount of Memory
To set a minimum amount of memory for Domain0, edit the
dom0-min-mem
param-
eter in the
/etc/xen/xend-config.sxp
file and restart xend. For more informa-
tion, see Section 4.2, “Controlling the Host by Modifying xend Settings” (page 29).
2.4 Networks Card in Fully Virtualized
Guests
In a fully virtualized guest, the default network card is an emulated Realtek network
card. However, it also possible to use the split network driver to run the communication
between Domain0 and a VM Guest. By default, both interfaces are presented to the
VM Guest, because the drivers of some operating systems require both to be present.
When using SUSE Linux Enterprise, both network cards are available for the VM Guest.
The MAC addresses of both cards are identical in this case, which leads to problems
when running the network. The following network options are available:
emulated
To use a “emulated” network interface like an emulated Realtek card, specify
type=ioemu
on the vif line. In
/etc/xen/vm/<configuration>
this
would look like:
vif=[ 'mac=00:16:3e:62:f4:f3,type=ioemu' ]
paravirtualized
Specify the parameter
type=netfront
to the vif line to use the paravirtualized
network interface. In
/etc/xen/vm/<configuration>
this would look like:
vif=[ 'mac=00:16:3e:62:f4:f3,type=netfront' ]
emulated and paravirtualized
If the administrator should be offered both options, simply do not specify a type.
In
/etc/xen/vm/<configuration>
this would look like:
vif=[ 'mac=00:16:3e:62:f4:f3,model=rtl8139' ]
In this case, one of the network interfaces should be disabled.
12 Virtualization with Xen