1. Abount bonding
The Linux bonding driver provides a method for aggregating
multiple network interfaces into a single logical "bonded" interface.
The behavior of the bonded interfaces depends upon the mode; generally
speaking, modes provide either hot standby or load balancing services.
Additionally, link integrity monitoring may be performed.
Requirements for bonding
1. Ethtool support in the base drivers for retrieving
the speed and duplex of each slave.
2. A switch that supports IEEE 802.3ad Dynamic link
aggregation.
Most switches will require some type of configuration
to enable 802.3ad mode.
2. Persistent bonding Configuration
Add in the /etc/modprobe.d/dist.conf file
alias bond0 bonding
options bond0 mode=1 miimon=30
[root@JerryDai network-scripts]$ cat ifcfg-bond0
DEVICE=bond0
TYPE=Ethernet
ONBOOT=yes
NM_CONTROLLED=no
BOOTPROTO=none
IPADDR=192.168.1.100
PREFIX=24
GATEWAY=192.168.1.1
DNS1=114.114.114.114
DEFROUTE=yes
IPV4_FAILURE_FATAL=yes
IPV6INIT=no
NAME="System bond0"
[root@JerryDai network-scripts]$ cat ifcfg-eth0
DEVICE=eth0
TYPE=Ethernet
ONBOOT=yes
NM_CONTROLLED=no
BOOTPROTO=none
MASTER=bond0
SLAVE=yes
[root@JerryDai network-scripts]$ cat ifcfg-eth1
DEVICE=eth1
TYPE=Ethernet
ONBOOT=yes
NM_CONTROLLED=no
BOOTPROTO=none
MASTER=bond0
SLAVE=yes
Configuring Network Interface Bonding
原文：http://jerrydai.blog.51cto.com/12141841/1871526