CentOS6.2网卡设置

下面主要介绍在CentOS6.2下使用系统自带的bonding进行网卡绑定的详细步骤。

注意：请在配置前关闭NetworkManager服务[root@h63 ~]# Service NetworkManager status && service NetworkManager start网卡绑定一次可以绑定多个网卡，你可以使用ifconfig -a查看你的网卡信息，例如：[root@h63 ~]# ifconfig -a

em1 Link encap:Ethernet HWaddr 78:2B:CB:30:08:03UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1RX packets:48236002 errors:0 dropped:0 overruns:0 frame:0TX packets:16156472 errors:0 dropped:0 overruns:0 carrier:0collisions:0 txqueuelen:1000RX bytes:4838973371 (4.5 GiB) TX bytes:1301118550 (1.2 GiB)Interrupt:36 Memory:d6000000-d6012800

em2 Link encap:Ethernet HWaddr 78:2B:CB:30:08:05UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1RX packets:42385720 errors:0 dropped:0 overruns:0 frame:0TX packets:7283526 errors:0 dropped:0 overruns:0 carrier:0collisions:0 txqueuelen:1000RX bytes:4307780986 (4.0 GiB) TX bytes:466840625 (445.2 MiB)Interrupt:48 Memory:d8000000-d8012800

em3 Link encap:Ethernet HWaddr 78:2B:CB:30:08:07BROADCAST MULTICAST MTU:1500 Metric:1RX packets:0 errors:0 dropped:0 overruns:0 frame:0TX packets:0 errors:0 dropped:0 overruns:0 carrier:0collisions:0 txqueuelen:1000RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)Interrupt:32 Memory:da000000-da012800

em4 Link encap:Ethernet HWaddr 78:2B:CB:30:08:09BROADCAST MULTICAST MTU:1500 Metric:1RX packets:0 errors:0 dropped:0 overruns:0 frame:0TX packets:0 errors:0 dropped:0 overruns:0 carrier:0collisions:0 txqueuelen:1000RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)Interrupt:42 Memory:dc000000-dc012800

这里有4个网卡，分别是em1、em2、em3和em4，我们把em1和em2做一个绑定，绑定模式为6（关于网卡绑定模式的介绍请看Linux网卡绑定探析），首先我给给网卡绑定后的设备起个名字bond0（名称可以自定义），并创建：[root@h63 ~]# vim /etc/sysconfig/network-scripts/ifcfg-bond0device=bond0#设备名称BOOTPROTO=static#静态IPONBOOT=yes#自动启动IPADDR=172.16.16.63#设备绑定的IPGATEWAY=172.16.23.254 #设备绑定的网关NETMASK=255.255.248.0#设备绑定的掩码TYPE=Ethernet#设备绑定的类型

编辑需要绑定的网卡：[root@h63 ~]# vim /etc/sysconfig/network-scripts/ifcfg-em1

DEVICE=em1BOOTPROTO=noneONBOOT=yesMASTER=bond0#绑定后的设备名称SLAVE=yesTYPE=Ethernet

[root@h63 ~]# vim /etc/sysconfig/network-scripts/ifcfg-em2

DEVICE=em2BOOTPROTO=noneONBOOT=yesMASTER=bond0#绑定后的设备名称SLAVE=yesTYPE=Ethernet说明：配置网卡时不要填写IP地址和MAC地址

配置加载模式设置：[root@h63 ~]# vim /etc/modprobe.conf

alias bond0 bondingoptions bond0 miimon=100 mode=6

说明：mode是网卡绑定的模式，此处是模式6

也可以在/etc/modprobe.d/下创建一个文件：[root@h63 ~]# vim /etc/modprobe.d/bond

alias bond0 bondingoptions bond0 miimon=100 mode=6

绑定配置完成，重启网络服务[root@h63 ~]#service network restart

查看网卡绑定的情况：

[root@h63 ~]# cat /proc/net/bonding/bond0Ethernet Channel Bonding Driver: v3.6.0 (September 26, 2009)

Bonding Mode: adaptive load balancingPrimary Slave: NoneCurrently Active Slave: em1MII Status: upMII Polling Interval (ms): 100Up Delay (ms): 0Down Delay (ms): 0

Slave Interface: em1MII Status: upSpeed: 1000 MbpsDuplex: fullLink Failure Count: 0Permanent HW addr: 78:2b:cb:30:08:03Slave queue ID: 0

Slave Interface: em2MII Status: upSpeed: 1000 MbpsDuplex: fullLink Failure Count: 0Permanent HW addr: 78:2b:cb:30:08:05Slave queue ID: 0

至此，网卡绑定就完成了。有不对的地方，还请指教。