启动命令：/etc/xen/scripts/network-bridge start

查看状态  /etc/xen/scripts/network-bridge status

停止：/etc/xen/scripts/network-bridge stop

1)原/etc/sysconfig/network-scripts/ifcfg-eth0文件的内容：

DEVICE=eth0
BOOTPROTO=none
HWADDR=00:15:17:18:6F:A4
IPADDR=192.168.226.202
NETMASK=255.255.255.0
ONBOOT=yes
GATEWAY=192.168.226.1
TYPE=Ethernet
USERCTL=no
IPV6INIT=no
PEERDNS=yes

将其修改如下：

DEVICE=eth0
HWADDR=00:15:17:18:6F:A4
ONBOOT=yes
BRIDGE=xenbr0
NM_CONTROLLED=no

2)另添加ifcfg-xenbr0文件，内容如下：

DEVICE=xenbr0
TYPE=Bridge
BOOTPROTO=static
IPADDR=192.168.226.202
NETMASK=255.255.255.0
GATEWAY=192.168.226.1
BROADCAST=192.168.226.225
ONBOOT=yes
DELAY=0
NM_CONTROLLED=no

3)重启网络
#service network restart

4)修改虚拟机配置文件就可以使用xenbr0了
形如：vif = [ 'type=ioemu, bridge=xenbr0,mac=00:16:3e:3a:77:dd' ]

mount -t iso9660 /dev/cdrom /mnt/cdrom 挂光驱