Linux Failover Bonding

1. Add the below lines to /etc/modprobe.conf

                alias bond0 bonding

                options bond0 mode=1 miimon=100

2. Create bond0 device file, /etc/sysconfig/network-scripts/ifcfg-bond0 with the following content:

                DEVICE=bond0

                BOOTPROTO=none

                ONBOOT=yes

                NETWORK=192.168.122.0

                NETMASK=255.255.255.0

                IPADDR=192.168.122.118

                USERCTL=no

3. Create /etc/sysconfig/network-scripts/ifcfg-eth0 with content:

                DEVICE=eth0

                MASTER=bond0

                SLAVE=yes

                USERCTL=no

                BOOTPROTO=dhcp

                IPV6INIT=yes

                IPV6_AUTOCONF=yes

                ONBOOT=yes

4. Create /etc/sysconfig/network-scripts/ifcfg-eth1 with content:

                DEVICE=eth1

                MASTER=bond0

                SLAVE=yes

                USERCTL=no

                BOOTPROTO=dhcp

                IPV6INIT=yes

                IPV6_AUTOCONF=yes

                ONBOOT=yes

5.[root@localhost ~]# service network restart

6.[root@localhost ~]# cat /proc/net/bonding/bond0

                Ethernet Channel Bonding Driver: v3.2.4 (January 28, 2008)

                Bonding Mode: fault-tolerance (active-backup)

                Primary Slave: None

                Currently Active Slave: eth0

                MII Status: up

7.[root@localhost ~]# ifdown eth0

8.[root@localhost ~]# cat /proc/net/bonding/bond0

                Ethernet Channel Bonding Driver: v3.2.4 (January 28, 2008)

                Bonding Mode: fault-tolerance (active-backup)

                Primary Slave: None

                Currently Active Slave: eth1