How to create Bridge in Linux

In my example i am using, CentOS 6.3 64bit.

Use following steps to create Bridge.

Make Susre Bridge PKG is installed.

# rpm -qa | grep bridge
bridge-utils-1.2-9.el6.x86_64

If not then installed by YUM

# yum install bridge-utils

After installation, go under network Dir.

cd /etc/sysconfig/network-scripts

Here choose your NIC, on which you want to create Bridge. I am using p3p1 (PCI  4 port card )

Do the following setting

[root@*****2 network-scripts]# vi ifcfg-p3p1
DEVICE="p3p1"
HWADDR="00:1B:21:3A:98:F8"
ONBOOT="yes"
BRIDGE=br1











Save the file.  Now open/create br1

[root@inf1basevm02 network-scripts]# vi ifcfg-br1
DEVICE="br1"
ONBOOT="yes"
TYPE=Bridge
IPADDR=10.131.11.190
NETMASK=255.255.255.0
GATEWAY=10.131.11.254


Save the file, Now just restart the services.

#/etc/init.d/network restart


Command to check.

 brctl show
bridge name    bridge id        STP enabled    interfaces
br1        8000.001b213a98f8    no        p3p1