CentOS7设置网卡子接口

1.网卡上联到trunk端口

2.编辑网卡配置文件，cat /etc/sysconfig/network-scripts/ifcfg-eth0，内容如下：

# Generated by VMWare customization engine.
DEVICE=eth0
ONBOOT=yes

2.cp /etc/sysconfig/network-scripts/ifcfg-eth0 /etc/sysconfig/network-scripts/ifcfg-eth0.202 #新建vlan202子接口文件

cat /etc/sysconfig/network-scripts/ifcfg-eth0.202，内容如下：

PHYSDEV=eth0
VLAN=YES
TYPE=Vlan
VLAN_ID=202
NAME=eth0.202
REORDER_HDR=yes
GVRP=no
MVRP=no
ONBOOT=yes
DEFROUTE=yes
IPV4_FAILURE_FATAL=yes
BOOTPROTO=none
IPADDR=10.10.202.13
NETMASK=255.255.255.0
GATEWAY=10.10.202.254

2.重启网卡服务，如果报错则 systemctl restart NetworkManager。如果之前该机器配置过网卡，则还要删掉默认路由，vim /etc/sysconfig/network 删除默认网关行