实验镜像CentOS7

常见的网卡绑定驱动三种模式：

Mode=0(balance-rr) 平衡负载模式：平时两块网卡均工作，且自动备援，但需要在与服务器本地网卡相连的交换机设备上进行端口聚合来支持绑定技术。

Mode=1(active-backup) 自动备援模式：平时只有一块网卡工作，在它故障后自动替换为另外的网卡。

Mode=6(balance-alb)平衡负载模式：平时两块网卡均工作，且自动备援，无须交换机设备提供辅助支持。

首先在虚拟机再添加一块网卡，两块网卡模式相同

修改网卡配置

[root@localhost ~]# cat /etc/sysconfig/network-scripts/ifcfg-eno16777736

TYPE=Ethernet

BOOTPROTO=none

USERCTL=no

DEVICE=eno16777736

ONBOOT=yes

MASTER=bond0

SLAVE=yes

[root@localhost ~]# cat /etc/sysconfig/network-scripts/ifcfg-eno33554984

TYPE=Ethernet

BOOTPROTO=none

DEVICE=eno33554984

ONBOOT=yes

USERCTL=no

MASTER=bond0

SLAVE=yes

[root@localhost ~]# cat /etc/sysconfig/network-scripts/ifcfg-bond0

TYPE=Ethernet

BOOTPROTO=none

USERCTL=no

DEVICE=bond0

ONBOOT=yes

IPADDR=192.168.200.10

PREFIX=24

NM_CONTROLLED=no

[root@localhost ~]# vi /etc/modprobe.d/bond.conf

alias bond0 bonding

options bond0 miimon=100 mode=6

[root@localhost ~]# systemctl restart network

[root@localhost ~]# ifconfig

bond0: flags=5187 mtu 1500

inet 192.168.200.10 netmask 255.255.255.0 broadcast 192.168.200.255

inet6 fe80::20c:29ff:fee3:97cf prefixlen 64 scopeid 0x20

ether 00:0c:29:e3:97:cf txqueuelen 0 (Ethernet)

RX packets 14110 bytes 924830 (903.1 KiB)

RX errors 0 dropped 8226 overruns 0 frame 0

TX packets 10880 bytes 689514 (673.3 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

eno16777736: flags=6211 mtu 1500

ether 00:0c:29:e3:97:cf txqueuelen 1000 (Ethernet)

RX packets 5806 bytes 395602 (386.3 KiB)

RX errors 0 dropped 221 overruns 0 frame 0

TX packets 6771 bytes 415514 (405.7 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

eno33554984: flags=6211 mtu 1500

ether 00:0c:29:e3:97:d9 txqueuelen 1000 (Ethernet)

RX packets 8304 bytes 529228 (516.8 KiB)

RX errors 0 dropped 8005 overruns 0 frame 0

TX packets 4109 bytes 274000 (267.5 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

lo: flags=73 mtu 65536

inet 127.0.0.1 netmask 255.0.0.0

inet6 ::1 prefixlen 128 scopeid 0x10

loop txqueuelen 0 (Local Loopback)

RX packets 32 bytes 2780 (2.7 KiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 32 bytes 2780 (2.7 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

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