目的:兩塊網卡流量負載均衡、冗餘
DELL R720:4塊網卡(需要交換機也支持),分爲管理網和業務網
系統:CentOS6.5
將網卡em1和em2綁定,虛擬網卡名稱爲bond1(管理網)
# cat /etc/sysconfig/network-scripts/ifcfg-em1 DEVICE=em1 //網卡設備名稱 HWADDR=C8:1F:66:E5:33:67 //網卡MAC地址 ONBOOT=yes //隨network啓動 BOOTPROTO=none //獲取IP的方式 MASTER=bond1 //綁定的虛擬網卡名稱 SLAVE=yes //角色爲從
# cat /etc/sysconfig/network-scripts/ifcfg-em2 DEVICE=em2 HWADDR=C8:1F:66:E5:33:68 ONBOOT=yes BOOTPROTO=none MASTER=bond1 SLAVE=yes
# cat ifcfg-bond1 DEVICE=bond1 //虛擬網卡名稱 ONBOOT=yes //隨network啓動 BOOTPROTO=none //獲取IP的方式 IPADDR=192.168.1.224 //IP地址 NETMASK=255.255.255.0 //子網掩碼 GATEWAY=192.168.1.1 //網關
# grep bond /etc/modprobe.d/dist.conf //配置綁定模型, 此兩行加到配置文件最後 alias bond1 bonding options bond1 miimon=100 mode=0 //系統每隔100ms檢測一下mode指定負載模式
# grep bond /etc/rc.local ifenslave bond1 em1 em2 //系統啓動時將虛擬網卡和兩張物理網卡綁定
重啓機器(可以嘗試其它方式,加載模塊或者重啓服務)
# cat /proc/net/bonding/bond1 //檢測狀態 EthernetChannel Bonding Driver: v3.6.0 (September 26, 2009) BondingMode: load balancing (round-robin) MIIStatus: up MIIPolling Interval (ms): 100 Up Delay(ms): 0 DownDelay (ms): 0 SlaveInterface: em1 MIIStatus: up Speed:1000 Mbps Duplex:full LinkFailure Count: 0 PermanentHW addr: c8:1f:66:e5:33:67 Slavequeue ID: 0 Slave Interface: em2 MII Status: down Speed: Unknown Duplex: Unknown Link Failure Count: 0 Permanent HW addr: c8:1f:66:e5:33:68 Slave queue ID: 0 //該物理網卡是斷開狀態,因爲沒有插網線
2. 同理,將網卡em3和em4綁定,虛擬網卡名稱爲bond2(業務網)
# cat ifcfg-em3 DEVICE=em3 HWADDR=C8:1F:66:E5:33:69 ONBOOT=yes BOOTPROTO=none MASTER=bond2 SLAVE=yes
# cat ifcfg-em4 DEVICE=em4 HWADDR=C8:1F:66:E5:33:6A ONBOOT=yes BOOTPROTO=none MASTER=bond2 SLAVE=yes
# cat ifcfg-bond2 DEVICE=bond2 ONBOOT=yes BOOTPROTO=none IPADDR=10.88.253.224 NETMASK=255.255.255.128 GATEWAY=10.88.253.129
# grep bond /etc/modprobe.d/dist.conf alias bond2 bonding options bond2 miimon=100 mode=0
# grep bond /etc/rc.local ifenslave bond1 em3 em4
# cat /proc/net/bonding/bond2 EthernetChannel Bonding Driver: v3.6.0 (September 26, 2009) BondingMode: load balancing (round-robin) MIIStatus: up MIIPolling Interval (ms): 100 Up Delay(ms): 0 DownDelay (ms): 0 SlaveInterface: em3 MIIStatus: up Speed:1000 Mbps Duplex:full LinkFailure Count: 0 PermanentHW addr: c8:1f:66:e5:33:69 Slavequeue ID: 0 Slave Interface: em4 MII Status: up Speed: 1000 Mbps Duplex: full Link Failure Count: 0 Permanent HW addr: c8:1f:66:e5:33:6a Slave queue ID: 0