ubuntu bridge
vi /etc/network/interfaces
auto br0
iface br0 inet static
bridge_ports eth0 eth1
bridge_stp on
bridge_maxwait 0
address 192.168.2.4
netmask 255.255.255.0
gateway 192.168.2.2
centos bridge
vi /etc/sysconfig/network-scripts/ifcfg-br0
DEVICE="br0"
TYPE="Bridge"
ONBOOT="yes"
BOOTPROTO="static"
IPADDR="192.168.12.10"
NETMASK="255.255.255.0"
GATEWAY="192.168.12.2"
DNS1=192.168.12.2
NM_CONTROLLED="no"
vi /etc/sysconfig/network-scripts/ifcfg-em1
DEVICE=em1
BRIDGE=br0
TYPE=Ethernet
ONBOOT=yes
