centos7下网卡与网络启动、停止与重启的方法。

1、停止、启动、重启网卡服务

停止：
systemctl stop network.service
或
systemctl stop network

启动：
systemctl start network.service
或
systemctl start network

重启：
systemctl restart network.service
或
systemctl restart network

说明：CentOS6.x下的重启命令为：service network restart