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2016-08-16 回答

操作系统：RHEL7.0

两个网卡连接在一个交换机下面，本例用vmware模拟都在NAT模式下

1、查看当前网卡 名字 mac地址，确定当前为ens33、ens37

[root@LiuZhen network-scripts]#

[root@LiuZhen network-scripts]# ifconfig

ens33: flags=4163 mtu 1500

inet 192.168.221.222 netmask 255.255.255.0 broadcast 192.168.221.255

inet6 fe80::20c:29ff:fe92:cdde prefixlen 64 scopeid 0x20

ether 00:0c:29:92:cd:de txqueuelen 1000 (Ethernet)

RX packets 476 bytes 44782 (43.7 KiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 410 bytes 61722 (60.2 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

ens37: flags=4163 mtu 1500

ether 00:0c:29:92:cd:e8 txqueuelen 1000 (Ethernet)

RX packets 39 bytes 2523 (2.4 KiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 0 bytes 0 (0.0 B)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

2、进入以下目录/etc/sysconfig/network-scripts

vi ifcfg-ens33

TYPE=Ethernet

BOOTPROTO=none

ONBOOT=yes

USERCTL=no

DEVICE=ens33

MASTER=bond0

SLAVE=yes

vi ifcfg-ens37

TYPE=Ethernet

BOOTPROTO=none

ONBOOT=yes

USERCTL=no

DEVICE=ens37

MASTER=bond0

SLAVE=yes

vi ifcfg-bond0

TYPE=Ethernet

BOOTPROTO=none

ONBOOT=yes

USERCTL=no

DEVICE=bond0

IPADDR=192.168.221.222

PREFIX=16

DNS=192.168.221.2

NM_CONTROLLED=no

vi /etc/modprobe.d/bond.conf

alias bond0 bonding

options bond0 miimon=100 mode=6

mode=6：平衡负载模式，两个都工作。有自动备援，不需要 “Switch”支援及设定。

mode=1：自动备援模式，只有一个工作。其中一条线若断线，其他线路将会自动备援。

mode=0：平衡负载模式，两个都工作。有自动备援，但需要 “Switch”支援及设定(这两个端口应该采取聚合方式)。

3、重启网络服务，

service network restart

[root@LiuZhen network-scripts]# ifconfig -a

bond0: flags=5187 mtu 1500

inet 192.168.221.222 netmask 255.255.0.0 broadcast 192.168.255.255

inet6 fe80::20c:29ff:fe92:cdde prefixlen 64 scopeid 0x20

ether 00:0c:29:92:cd:de txqueuelen 0 (Ethernet)

RX packets 1007 bytes 90348 (88.2 KiB)

RX errors 0 dropped 8 overruns 0 frame 0

TX packets 817 bytes 133925 (130.7 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

ens33: flags=6211 mtu 1500

ether 00:0c:29:92:cd:de txqueuelen 1000 (Ethernet)

RX packets 901 bytes 83115 (81.1 KiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 751 bytes 126638 (123.6 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

ens37: flags=6211 mtu 1500

ether 00:0c:29:92:cd:e8 txqueuelen 1000 (Ethernet)

RX packets 106 bytes 7233 (7.0 KiB)

RX errors 0 dropped 8 overruns 0 frame 0

TX packets 66 bytes 7287 (7.1 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

查看配置文件

root@LiuZhen network-scripts]# cat /proc/net/bonding/bond0

Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)

Bonding Mode: adaptive load balancing

Primary Slave: None

Currently Active Slave: ens33

MII Status: up

MII Polling Interval (ms): 100

Up Delay (ms): 0

Down Delay (ms): 0

Slave Interface: ens33

MII Status: up

Speed: 1000 Mbps

Duplex: full

Link Failure Count: 0

Permanent HW addr: 00:0c:29:92:cd:de

Slave queue ID: 0

Slave Interface: ens37

MII Status: up

Speed: 1000 Mbps

Duplex: full

Link Failure Count: 0

Permanent HW addr: 00:0c:29:92:cd:e8

Slave queue ID: 0

配置完成。