通过bonding,可以将两块或多块网卡当作一块网卡使用，可用于提高性能或是冗余。
参考文档
# yum install kernel-doc # vim /usr/share/doc/kernel-doc-2.6.32/Documentation/networking/bonding.txt
实验环境
操作系统：RHEL 6.5
网卡： eth0, eth1, eth2
操作步骤
要将eth1和eth2两网卡bonding在一起。
写bond0的配置文件
首先需要建立一个bond0的配置文件，然后把eth1和eth2都关联到bond0上。
# vim /etc/sysconfig/network-scripts/ifcfg-bond0 DEVICE=bond0 IPADDR=192.168.100.60 NETMASK=255.255.255.0 ONBOOT=yes BOOTPROTO=none NM_CONTROLLED=no USERCTL=no BONDING_OPTS="mode=1 miimon=100"
设置好ip地址，子网掩码和bonding_opts。
修改eth1和eth2的配置文件
修改eth1和eth2的配置文件，使它们成为bond0的slave.
# vim /etc/sysconfig/network-scripts/ifcfg-eth1 DEVICE=eth1 TYPE=Ethernet BOOTPROTO=none HWADDR=52:54:00:6e:2c:b6 MASTER=bond0 SLAVE=yes ONBOOT=yes # vim /etc/sysconfig/network-scripts/ifcfg-eth2 DEVICE=eth2 TYPE=Ethernet BOOTPROTO=none HWADDR=52:54:00:ad:01:e4 MASTER=bond0 SLAVE=yes ONBOOT=yes
modprobe配置
修改modprobe配置
# vim /etc/modprobe.d/bond0.conf alias bond0 bonding
确认Bonding Kernel Module已经安装上。
# modprobe --first-time bonding
测试
重启网络
# /etc/init.d/network restart # ifconfig
可以看到bond0已经起来了，有ip地址(eth1的ip地址)，eth1和eth2是slave.
用以下命令查看bond0的详细信息
# cat /proc/net/bonding/bond0 Ethernet Channel Bonding Driver: v3.6.0 (September 26, 2009) Bonding Mode: fault-tolerance (active-backup) Primary Slave: None Currently Active Slave: eth1 MII Status: up MII Polling Interval (ms): 100 Up Delay (ms): 0 Down Delay (ms): 0 Slave Interface: eth1 MII Status: up Speed: 100 Mbps Duplex: full Link Failure Count: 0 Permanent HW addr: 52:54:00:6e:2c:b6 Slave queue ID: 0 Slave Interface: eth2 MII Status: up Speed: 100 Mbps Duplex: full Link Failure Count: 0 Permanent HW addr: 52:54:00:ad:01:e4 Slave queue ID: 0
Bonding选项
修改BONDING_OPTS可以使bonding发挥不一样的功能。
mode
Specifies one of the bonding policies. The default is
balance-rr (round robin). Possible values are:
balance-rr or 0
active-backup or 1
broadcast or 3