KVM网桥 多vLan 配置
示例：物理节点IP：10.12.40.0/24 （vlan4440）
虚机 IP：10.16.41.0/24 （vlan4439）
1、 物理网桥
# vim /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE="eth0"
BOOTPROTO="none"
NM_CONTROLLED="no"
ONBOOT="yes"
TYPE="Ethernet"
MASTER="bond0"
SLAVE="yes"
USERCTL="no"
# vim /etc/sysconfig/network-scripts/ifcfg-eth1
DEVICE="eth1
BOOTPROTO="none"
NM_CONTROLLED="no"
ONBOOT="yes"
TYPE="Ethernet"
MASTER="bond0"
SLAVE="yes"
USERCTL="no"
# vim /etc/sysconfig/network-scripts/ifcfg-bond0
DEVICE="bond0"
BOOTPROTO="none"
NM_CONTROLLED="no"
ONBOOT="yes"
TYPE="Ethernet"
USERCTL="no"
BRIDGE="iccsbr0"
BONDING_OPTS="miimon=100 mode=4"
# vim /etc/sysconfig/network-scripts/ifcfg-iccsbr0
DEVICE="iccsbr0"
BOOTPROTO="none"
NM_CONTROLLED="no"
ONBOOT="yes"
TYPE="Bridge"
USERCTL="no"
IPADDR="10.16.40.41"
NETMASK="255.255.255.0"
GATEWAY="10.16.40.254"
2、 虚机vlan网桥
# vim /etc/sysconfig/network-scripts/ifcfg-bond0.4439
DEVICE=bond0.4439
PHYSDEV=bond0
ONBOOT=yes
BOOTPROTO=none
VLAN=yes
BRIDGE=iccsbr4439
# vim /etc/sysconfig/network-scripts/ifcfg-iccsbr4439
DEVICE=iccsbr4439
TYPE=Bridge
#STP=on
ONBOOT=yes
BOOTPROTO=none
上联cisco2960配置
...............
interface Port-channel1
switchport trunk native vlan 4440
switchport mode trunk
!
........
!
interface GigabitEthernet0/7
switchport trunk native vlan 4440
switchport mode trunk
channel-group 1 mode active
!
interface GigabitEthernet0/8
switchport trunk native vlan 4440
switchport mode trunk
channel-group 1 mode active
端口7和8分别连接服务器的两个网卡，其中
“switchport trunk native vlan 4440” 代表服务端过来的数据包，如果没打vlan id，则标示为vlan 4440；针对KVM服务器管理IP（10.16.40.0/24vlan4440）
“switchport mode trunk” 代表服务端过来的打了标签的vlan，全部放行；针对KVM打了标签的虚机数据包（10.16.41.0/24vlan4439）
3、 当虚机需走vlan4439时，在网络接入选择iccsbr4439即可
4、 当有其他vlan需求时，同上类似配置
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