centos7多网卡配置bond0 （mode6无需交换机做配置）

# 首先备份两块网卡的配置文件 mv /etc/sysconfig/network-scripts/ifcfg-em1 /etc/sysconfig/bak_network-scripts/ifcfg-em1_bak mv /etc/sysconfig/network-scripts/ifcfg-em2 /etc/sysconfig/bak_network-scripts/ifcfg-em2_bak

# 重新创建ifcfg-eth0网卡配置文件(em1;em2) vim /etc/sysconfig/network-scripts/ifcfg-em1 TYPE=Ethernet BOOTPROTO=none DEFROUTE=yes PEERDNS=yes PEERROUTES=yes NAME=em1 DEVICE=em1 ONBOOT=yes MASTER=bond0 SLAVE=yes

# 创建bond0虚拟网卡配置文件ifcfg-bond0 vim /etc/sysconfig/network-scripts/ifcfg-bond0 DEVICE=bond0 NAME=bond0 TYPE=Bond IPADDR=192.168.67.109 NETMASK=255.255.255.0 ONBOOT=yes BOOTPROTO=none BONDING_OPTS="mode=6 miimon=100" USERCTL=no GATEWAY=192.168.67.254

# 重启网卡生效

systemctl restart bond0