centos6.5
1多网卡绑定可以有0-6共七种模式。
mode=0 多端口轮询发送数据包
mode=1 主备模式
mode=2 基于Hash算法发送数据包
mode=3 在每个slave接口上传输每个数据包，此模式提供了容错能力
mode=4 创建一个聚合组，它们共享同样的速率和双工设定，需要交换机配合
mode=5 不需要任何特别的switch(交换机)支持的通道bonding。在每个slave上根据当前的负载（根据速度计算）分配外出流量
mode=6 针对IPV4做了优化
2加载bonding模块
modprobe --first-time bonding
************这里我用bond0测试***********
3，配置虚拟端口bond0
[root@localhost network-scripts]# vi ifcfg-bond0
DEVICE=bond0
BOOTPROTO=none
ONBOOT=yes
IPADDR=192.168.0.200
NETMASK=255.255.255.0
GATEWAY=192.168.0.1
DNS1=8.8.8.8
[root@localhost network-scripts]# vi ifcfg-eth0
DEVICE=eth0
HWADDR=52:54:00:17:34:4D
TYPE=Ethernet
UUID=18e63b61-aee2-4b5a-bb85-05b63811cb59
ONBOOT=yes
NM_CONTROLLED=yes
BOOTPROTO=none
MASTER=bond0
SLAVE=yes
[root@localhost network-scripts]# vi ifcfg-eth1
DEVICE=eth1
HWADDR=52:54:00:23:31:51
TYPE=Ethernet
UUID=070ee9db-9502-4d32-9598-7bf8a6462eb0
ONBOOT=yes
NM_CONTROLLED=yes
BOOTPROTO=none
MASTER=bond0
SLAVE=yes
4,修改modprobe相关设定文件
[root@localhost ~]# vi /etc/modprobe.d/bonding.conf
alias bond0 binding
options bond0 miimon=100 mode=1
5,重启网卡
[root@localhost ~]# service network restart
Shutting down interface bond0: [ OK ]
Shutting down loopback interface: [ OK ]
Bringing up loopback interface: [ OK ]
Bringing up interface bond0: Determining if ip address 192.168.0.200 is already in use for device bond0...
[ OK ]
6,查看bonud工作状况
[root@localhost ~]# cat /proc/net/bonding/bond0
Ethernet Channel Bonding Driver: v3.6.0 (September 26, 2009)
Bonding Mode: load balancing (round-robin)
MII Status: up
MII Polling Interval (ms): 0
Up Delay (ms): 0
Down Delay (ms): 0
Slave Interface: eth0
MII Status: up
Speed: Unknown
Duplex: Unknown
Link Failure Count: 0
Permanent HW addr: 52:54:00:17:34:4d
Slave queue ID: 0
Slave Interface: eth1
MII Status: up
Speed: Unknown
Duplex: Unknown
Link Failure Count: 0
Permanent HW addr: 52:54:00:23:31:51
Slave queue ID: 0
7，查看网卡IP
[root@localhost ~]# ip add
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master bond0 state UP qlen 1000
link/ether 52:54:00:17:34:4d brd ff:ff:ff:ff:ff:ff
3: eth1: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master bond0 state UP qlen 1000
link/ether 52:54:00:17:34:4d brd ff:ff:ff:ff:ff:ff
4: bond0: <BROADCAST,MULTICAST,MASTER,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP
link/ether 52:54:00:17:34:4d brd ff:ff:ff:ff:ff:ff
inet 192.168.0.200/24 brd 192.168.0.255 scope global bond0
inet6 fe80::5054:ff:fe17:344d/64 scope link tentative dadfailed
valid_lft forever preferred_lft forever
测试，随便down掉eth0或者eth1其中一块网卡，依然可以上网
成功啦！！！！
（测试中遇到多服务器重启后，bond消失，解决方法是开机启动中加载模块）
vi /etc/rc.d/rc.local
#!/bin/sh
#
# This script will be executed *after* all the other init scripts.
# You can put your own initialization stuff in here if you don't
# want to do the full Sys V style init stuff.
touch /var/lock/subsys/local
#加载模块
modprobe --first-time bonding
原文链接：centos6.5端口聚合教程亲测可用，转载请注明来源！