1. 加載必要系統模塊
臨時加載:
modprobe bonding
modprobe 8021q
永久加載:
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名稱 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配置結束后,cat /proc/net/bonding/bond* 來查看bond的協商狀態
3. 幾種常見的bond mode,round-robin, active-backup, 802.3ad
##默認mode=0, round-robin模式,需要同時在交換機上配置鏈路聚合## auto bond0 iface bond0 inet manual ##mode=1, active-backup 模式,顧名思義即為一主一備,交換機上不需要做額外配置## auto bond0 iface bond0 inet manual bond-mode active-backup bond-miimon 100 ###多少ms檢測一次網絡 bond-slaves none ##mode=4, 802.3 ad模式,采用動態鏈路聚合策略,需要同時在交換機上配置動態鏈路聚合,## auto bond0 iface bond0 inet manual bond-mode 4 bond-miimon 100 bond-lacp-rate 1 bond-slaves none
mode 0和4的區別,0即為靜態鏈路聚合,沒有LACP報文交互,雙方端口up,雙工一致,鏈路就可以UP,因此不支持單鏈路故障備份。
4即為動態鏈路聚合,需要雙方配置LACP,LACP寫上成功,鏈路才可以UP,因此支持單鏈路故障備份。