一.非桥接模式：
配置：/etc/sysconfig/network-scripts/ifcfg-eth0，如下：
DEVICE="eth0"
HWADDR="11:11:11:11:11:11"
NM_CONTROLLED="yes"
ONBOOT="yes"
BOOTPROTO=static
IPADDR=192.168.77.103
NETMASK=255.255.255.0
GATEWAY=192.168.77.1
二.桥接模式：
1.配置/etc/sysconfig/network-scripts/ifcfg-eth0，如下：
DEVICE="eth0"
TYPE=ethernet
HWADDR="11:11:11:11:11:11"
NM_CONTROLLED="no"
ONBOOT="yes"
#BOOTPROTO=static
#IPADDR=192.168.77.103
#NETMASK=255.255.255.0
#GATEWAY=192.168.77.1
BRIDGE=br0
2.配置/etc/sysconfig/network-scripts/ifcfg-br0，如下：
DEVICE="br0"
TYPE=Bridge
BOOTPROTO=static
IPADDR=192.168.77.103
NETMASK=255.255.255.0
#NETWORK=192.168.1.0
GATEWAY=192.168.77.1
#HWADDR="11:11:11:11:11:11"
#NM_CONTROLLED="yes"
ONBOOT="yes"
NM_CONTROLLED=no
3.[可略]配置/etc/sysconfig/network-scripts/ifcfg-eth1，如下：
DEVICE="eth1"
HWADDR="78:2B:CB:65:25:EC"
NM_CONTROLLED="yes"
ONBOOT="yes"
BOOTPROTO=static
IPADDR=10.10.10.103
#netmask=255.255.255.0
#GATEWAY=10.10.10.1
4.修改/etc/sysctl.conf 文件,并增加如下：
net.bridge.bridge-nf-call-ip6tables = 0
net.bridge.bridge-nf-call-iptables = 0
net.bridge.bridge-nf-call-arptables = 0
net.bridge.bridge-nf-filter-vlan-tagged=0
保存退出。
5.重启网络: /etc/init.d/network restart
三.查询验证：
1.brctl show：
bridge name bridge id STP enabled interfaces
br0 8000.782bcb6525eb no eth0
vnet0
virbr0 8000.000000000000 yes
2.ifconfig查询结果类似，则表明br0桥接配置成功：
[root@compute3RHEL6 network-scripts]# ifconfig
br0 Link encap:Ethernet HWaddr 11:11:11:11:11:11
inet addr:192.168.77.103 Bcast:192.168.77.255 Mask:255.255.255.0
inet6 addr: fe80::1111:1111:1111:1111/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:14328578 errors:0 dropped:0 overruns:0 frame:0
TX packets:4650570 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:4459176095 (4.1 GiB) TX bytes:320844851 (305.9 MiB)
eth0 Link encap:Ethernet HWaddr 11:11:11:11:11:11
inet6 addr: fe80::7a2b:cbff:fe65:25eb/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:14338630 errors:0 dropped:0 overruns:0 frame:0
TX packets:4651391 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:4718080971 (4.3 GiB) TX bytes:362095405 (345.3 MiB)
Interrupt:36 Memory:da000000-da012800
eth1 Link encap:Ethernet HWaddr 78:2B:CB:65:25:EC
inet6 addr: 1111::1111:1111:1111:25ec/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:32644 errors:0 dropped:0 overruns:0 frame:0
TX packets:445 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2548629 (2.4 MiB) TX bytes:41490 (40.5 KiB)
Interrupt:48 Memory:dc000000-dc012800
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:1028 errors:0 dropped:0 overruns:0 frame:0
TX packets:1028 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1180221 (1.1 MiB) TX bytes:1180221 (1.1 MiB)
virbr0 Link encap:Ethernet HWaddr 11:11:11:11:11:11
inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:31 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:4276 (4.1 KiB)
vnet0 Link encap:Ethernet HWaddr 11:11:11:11:11:11
inet6 addr: 1111::1111:11:1111:1111/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:70 errors:0 dropped:0 overruns:0 frame:0
TX packets:2062 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:12016 (11.7 KiB) TX bytes:178631 (174.4 KiB)
本文转自 念槐聚 博客园博客，原文链接：http://www.cnblogs.com/haochuang/archive/2012/02/24/2366885.html，如需转载请自行联系原作者
