1. 加载必要系统模块
临时加载:
modprobe bonding
modprobe 8021q
永久加载:
vim /etc/modules # /etc/modules: kernel modules to load at boot time. # # This file contains the names of kernel modules that should be loaded # at boot time, one per line. Lines beginning with "#" are ignored. bonding 8021q
2. vim /etc/network/interfaces, 例如eth1,eth2
auto eth1 iface eth1 inet manual bond-master bond0 auto eth2 iface eth2 inet manual bond-master bond0
auto bond0 ##bond名称 iface bond0 inet manual bond-mode active-backup bond-miimon 100 bond-slaves none auto bond0.100 iface bond0.100 inet static address 10.0.0.3 gateway 10.0.0.1 netmask 255.255.255.240 vlan-raw-device bond0
bond配置结束后,cat /proc/net/bonding/bond* 来查看bond的协商状态
3. 几种常见的bond mode,round-robin, active-backup, 802.3ad
##默认mode=0, round-robin模式,需要同时在交换机上配置链路聚合## auto bond0 iface bond0 inet manual ##mode=1, active-backup 模式,顾名思义即为一主一备,交换机上不需要做额外配置## auto bond0 iface bond0 inet manual bond-mode active-backup bond-miimon 100 ###多少ms检测一次网络 bond-slaves none ##mode=4, 802.3 ad模式,采用动态链路聚合策略,需要同时在交换机上配置动态链路聚合,## auto bond0 iface bond0 inet manual bond-mode 4 bond-miimon 100 bond-lacp-rate 1 bond-slaves none
mode 0和4的区别,0即为静态链路聚合,没有LACP报文交互,双方端口up,双工一致,链路就可以UP,因此不支持单链路故障备份。
4即为动态链路聚合,需要双方配置LACP,LACP写上成功,链路才可以UP,因此支持单链路故障备份。