Linux Bridge configuration

Linux Network Bridge Configuration

Requirements :

a management port Gigabit network cardETH0, two service port Gigabit network cards (ETH1and theETH2),running CentOS6.5asKVMhost, you need to use two business port Nic as a bridge

Configuration:

1. View the system version

# cat/etc/issue

CentOS Release 6.5 (Final)

Kernel \ r on an \m

2. New bridge Configuration

# CAT/ETC/SYSCONFIG/NETWORK-SCRIPTS/IFCFG-BR0

Device=br0

Type=bridge

Onboot=yes

Nm_controlled=no

Bootproto=static

ipaddr=172.16.10.22

netmask=255.255.255.0

gateway=172.16.10.2

dns1=114.114.114.114

dns2=8.8.4.4

dns3=8.8.8.8

Stp=on

Delay=0

Span style= "FONT-WEIGHT:BOLD;FONT-FAMILY:CALIBRI;" >nm_controlled yes networkmanager admin, configured as no

3. Edit Join Bridge br0 the physical NIC eth1 and the eth2

# cat/etc/sysconfig/network-scripts/ifcfg-eth1

Device=eth1

Type=ethernet

Onboot=yes

Nm_controlled=no

Bootproto=static

ipaddr=0.0.0.0

Bridge=br0

Userctl=no

Ipv6init=no

# cat/etc/sysconfig/network-scripts/ifcfg-eth2

Device=eth2

Type=ethernet

Onboot=yes

Nm_controlled=no

Bootproto=static

ipaddr=0.0.0.0

Bridge=br0

Userctl=no

Ipv6init=no

Attention:

to avoid NetworkManager service impact, need to close the service

#serviceNetworkManager stop

#chkconfigNetworkManager off

4. Restart the Network Service

#/etc/init.d/networkrestart

5. Check

#brctlshow

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Linux Bridge configuration