linux as 4 bond网卡绑定

理论不赘述，简而言之，网卡绑定就是多张网卡逻辑上作为一张网卡用。可分为，负载均衡绑定和冗余绑定两种。以下为操作过程：
linux的内核为

引用

[root@test ~]# uname -a
Linux test 2.6.9-22.EL #1 Mon Sep 19 18:20:28 EDT 2005 i686 i686 i386 GNU/Linux

查看网卡绑定之前的状态

引用

[root@test network-scripts]# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:1B:B9:58:8B:B2 
          inet addr:172.16.4.100  Bcast:172.16.4.255  Mask:255.255.255.0
          inet6 addr: fe80::21b:b9ff:fe58:8bb2/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:6843321 errors:0 dropped:0 overruns:0 frame:0
          TX packets:8409339 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:4047128168 (3.7 GiB)  TX bytes:572617584 (546.0 MiB)
          Interrupt:9

lo        Link encap:Local Loopback 
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:18929827 errors:0 dropped:0 overruns:0 frame:0
          TX packets:18929827 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:2431050637 (2.2 GiB)  TX bytes:2431050637 (2.2 GiB)

1、编辑虚拟网络接口配置文件

引用

[root@test ~]# more /etc/sysconfig/network-scripts/ifcfg-bond0
DEVICE=bond0
IPADDR=172.16.4.100
NETMASK=255.255.255.0
BROADCAST=172.16.4.255
NETWORK=172.168.4.100
ONBOOT=yes

2、编辑各网卡的配置文件，注意编辑之前做好备份工作

引用

[root@test ~]# more /etc/sysconfig/network-scripts/ifcfg-eth0
BOOTPROTO=none
TYPE=Ethernet
DEVICE=eth0
ONBOOT=yes
MASTER=bond0
slave=yes
[root@test ~]# more /etc/sysconfig/network-scripts/ifcfg-eth1
BOOTPROTO=none
TYPE=Ethernet
DEVICE=eth1
ONBOOT=yes
MASTER=bond0
slave=yes

3、修改/etc/modprobe.conf 文件，同样做好备份，最后加入2行
   alias bond0 bonding
   options bond0 miimon=100 mode=0
注：
（1）、miimon 是链路监测的时间间隔单位是毫秒，miimon=100的意思就是，每100毫秒检测网卡和交换机之间是否连通，如不通则使用另外的链路。
（2)、mode=0 表示负载均衡方式，两块网卡都工作，需要交换机作支持
       mode=1 表示冗余方式，网卡只有一个工作，一个出问题启用另外的
       mode=6 表示负载均衡方式，两块网卡都工作，不需要交换机作支持

引用

[root@test ~]# more /etc/modprobe.conf
alias eth0 b44
alias eth1 8139too
alias usb-controller ehci-hcd
alias usb-controller1 ohci-hcd
alias bond0 bonding
options bond0 miimon=100 mode=0

4、在/etc/rc.d/rc.local 加入如下一行
    ifenslave bond0 eth0 eth1

引用

[root@test ~]# more /etc/rc.d/rc.local
#!/bin/sh
#
# This script will be executed *after* all the other init scripts.
# You can put your own initialization stuff in here if you don't
# want to do the full Sys V style init stuff.

touch /var/lock/subsys/local
ifenslave bond0 eth0 eth1

5、重新启动后负载平衡已经能正常工作，service network restart，经测试，不行

6、查看bond0的工作状态

引用

[root@test ~]# more /proc/net/bonding/bond0
Ethernet Channel Bonding Driver: v2.6.1 (October 29, 2004)

Bonding Mode: load balancing (round-robin)
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: 1
Permanent HW addr: 00:1b:b9:58:8b:b2

Slave Interface: eth1
MII Status: down
Link Failure Count: 0
Permanent HW addr: 00:07:40:6c:ac:c8

7、查看经过绑定后的网卡工作情况

引用

[root@test ~]# ifconfig -a
bond0     Link encap:Ethernet  HWaddr 00:1B:B9:58:8B:B2 
          inet addr:172.16.4.100  Bcast:172.16.4.255  Mask:255.255.255.0
          inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link
          UP BROADCAST RUNNING MASTER MULTICAST  MTU:1500  Metric:1
          RX packets:744154 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1866915 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:1099876146 (1.0 GiB)  TX bytes:121233595 (115.6 MiB)

eth0      Link encap:Ethernet  HWaddr 00:1B:B9:58:8B:B2 
          inet6 addr: fe80::21b:b9ff:fe58:8bb2/64 Scope:Link
          UP BROADCAST RUNNING SLAVE MULTICAST  MTU:1500  Metric:1
          RX packets:744154 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1866905 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:1099876146 (1.0 GiB)  TX bytes:121232839 (115.6 MiB)
          Interrupt:9

eth1      Link encap:Ethernet  HWaddr 00:1B:B9:58:8B:B2 
          inet6 addr: fe80::21b:b9ff:fe58:8bb2/64 Scope:Link
          UP BROADCAST SLAVE MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:10 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 b)  TX bytes:756 (756.0 b)
          Interrupt:11 Base address:0x1000

lo        Link encap:Local Loopback 
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:2129 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2129 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:1998893 (1.9 MiB)  TX bytes:1998893 (1.9 MiB)

sit0      Link encap:IPv6-in-IPv4 
          NOARP  MTU:1480  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

附：
DEVICE=物理设备名
IPADDR=IP地址
NETMASK=掩码值
NETWORK=网络地址
BROADCAST=广播地址
GATEWAY=网关地址
ONBOOT=[yes|no]（引导时是否激活设备）
USERCTL=[yes|no]（非root用户是否可以控制该设备）
BOOTPROTO=[none|static|bootp|dhcp]（引导时不使用协议|静态分配|BOOTP协议|DHCP协议）
HWADDR = 你的MAC地址