Linux configuration Bridge mode for two-layer switching.

Ifconfig eth0 0.0.0.0 #网卡IP没用了, kill.

Ifconfig eth1 0.0.0.0

Ifconfig eth2 0.0.0.0

Brctl ADDBR br0 #新建个桥

Brctl addif br0 eth0 #网卡添加到桥里面

Brctl addif br0 eth1

Brctl addif br0 eth2

Ifconfig br0 192.168.15.1/24 up #把桥启动, and initial IP and mask

Network Bridge configuration file: (online CP, has not been tested.) ）

1. Set up the bridge Touch/etc/sysconfig/network-scripts/ifcfg-br0 set up the bridge configuration file Ifcfg-br0
Vi/etc/sysconfig/network-scripts/ifcfg-br0

Device=br0 Type=bridge Bootproto=static ipaddr=192.168.1.99 netmask=255.255.255.0 gateway=192.168.1.1 Onboot=yes

2. Add the NIC to the Network Bridge
Add the eth0 and eth1 two network adapters to the bridge.

Modify the eth1 NIC configuration file
Vi/etc/sysconfig/network-scripts/ifcfg-eth0

Device=eth0 Type=ethernet Bootproto=static ipaddr=0.0.0.0 Onboot=yes Bridge=br0

Modify the eth2 NIC configuration file
Vi/etc/sysconfig/network-scripts/ifcfg-eth2

Device=eth1 Type=ethernet Bootproto=static ipaddr=0.0.0.0 Onboot=yes Bridge=br0

3. Set the bridge port

Brctl ADDBR br0 (add a bridge, if you create edit ifcfg-br0 manually, this command and some other commands to configure the bridge can not)

Brctl addif br0 eth0 (let eth0 become a port of br0, even if manually create edit ifcfg-br0, you also need to execute this command, otherwise you cannot network)
4. Restart the Network Service

Service NetworkManager Stop

Chkconfig NetworkManager off

Service Network Stop

Service Network start

Linux configuration Bridge mode for two-layer switching.