1.添加模块
modprobe --first-time 8021q
查询模块状态
modinfo 8021q
2.创建VLAN配置文件
cd /etc/sysconfig/network-scripts
cat ifcfg-eth0.10
DEVICE=ethX.10
BOOTPROTO=none
ONBOOT=yes
IPADDR=192.168.48.211
PREFIX=24
NETWORK=192.168.48.0
VLAN=yes
3.创建VLAN网卡
ip link add link eth0 name eth0.10 type vlan id 10
4.重启网络
systemctl restart network
注：Centos不支持vconfig，可以使用IP，nmcli，nmtui等命令
官方说明链接如下：
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Networking_Guide/ch-Configure_802_1Q_VLAN_Tagging.html
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Networking_Guide/sec-Configure_802_1Q_VLAN_Tagging_Using_the_Command_Line.html
