[root@localhost ~]# cat /etc/modprobe.conf
alias bond0 bonding
options bond0 miimon=100 mode=1 primary=eth0



[root@localhost network-scripts]# cat /etc/sysconfig/network-scripts/ifcfg-bond0
DEVICE=bond0
IPADDR=192.168.20.121
NETMASK=255.255.255.0
NETWORK=192.168.20.0
BROADCAST=192.168.20.255
GATEWAY=192.168.20.1
ONBOOT=yes
BOOTPROTO=none
USERCTL=no


[root@localhost network-scripts]# cat /etc/sysconfig/network-scripts/ifcfg-eth0

DEVICE=eth0
MASTER=bond0
SLAVE=yes
USERCTL=no
ONBOOT=yes
BOOTPROTO=none


[root@localhost network-scripts]# cat /etc/sysconfig/network-scripts/ifcfg-eth1

DEVICE=eth1
MASTER=bond0
SLAVE=yes
USERCTL=no
ONBOOT=yes
BOOTPROTO=none