双网卡绑定

                                 双网卡绑定

1.     首先在虚拟机上新建两个虚拟网卡，分别为eth0和eth1，然后分别在/etc/sysconfig/network-scripts/ifcfg-eth0 和/etc/sysconfig/network-scripts/ifcfg-eth1 上做些修改。

 下面是eth0的修改：

      # /etc/sysconfig/network-scripts/ifcfg-eth0

                    DEVICE=eth0

                    BOOTPROTO=static

                    ONBOOT=yes

                    MASTER=bond0

下面是eth1的修改：

   # /etc/sysconfig/network-scripts/ifcfg-eth1

                    DEVICE=eth1

                    BOOTPROTO=static

                    ONBOOT=yes

                    MASTER=bond0

 

2.     接着产生一个虚拟网卡bond0,在bond0上配置ip地址以及网关和掩码以及其他信息，下面是bond0的配置内容：

# /etc/sysconfig/network-scripts/ifcfg-bond0

                    DEVICE=bond0

                    ONBOOT=yes

                    BOOTPROTO=static

                    IPADDR=192.168.145.101

                   NETMASK=255.255.255.0

 

3.     这个绑定网卡在工作的时候还需要驱动的支持，编辑 /etc/modprobe.conf文件，首先用modprobe bonding 指令查看bond0的模块，为miimon。

  # /etc/modprobe.conf

~ alias eth0 pcnet32

alias bond0 bonding

alias scsi_hostadapter mptbase

alias scsi_hostadapter1 mptspi

alias scsi_hostadapter2 ata_piix

alias snd-card-0 snd-ens1371

options snd-card-0 index=0

options bond0 miimon=100 mode=1

options snd-ens1371 index=0

remove snd-ens1371 { /usr/sbin/alsactl store 0 >/dev/null 2>&1 || : ; }; /sbin/modprobe -r --ignore-remove snd-ens1371

alias eth1 pcnet32  (红色为重点)                 

 

4.     在开机脚本 /etc/rc.d/rc.local 里面说明谁跟谁绑定在一起，这里是eth0和eth1.

 vim  /etc/rc.d/rc.local

touch /var/lock/subsys/local

ifenslave bond0 eth0 eth1

 

5.     用 cat  /proc/net/bonding/bond0 来查看网卡绑定状态.

Bonding Mode: fault-tolerance (active-backup)

Primary Slave: None

Currently Active Slave: eth0

MII Status: up

MII Polling Interval (ms): 100

Up Delay (ms): 0

Down Delay (ms): 0

Slave Interface: eth0

MII Status: up

Link Failure Count: 2

Permanent HW addr: 00:0c:29:5b:e0:2b

Slave Interface: eth1

MII Status: down

Link Failure Count: 1

Permanent HW addr: 00:0c:29:5b:e0:35