路由器配置：
    sys
    [huawei]sysname R1 //修改路由器名字
    [R1]dhcp enable //打开DHCP功能
    [R1]interface GigabitEthernet 0/0/1 //进入路由器g0/0/1接口
    [R1-GigabitEthernet0/0/1]ip address 192.168.1.1 24 //为g0/0/1接口设置IP地址
    [R1-GigabitEthernet0/0/1]dhcp select interface //为g0/0/1接口设置接口DHCP
    [R1-GigabitEthernet0/0/1]dhcp server dns-list 192.168.1.254 //预留给DNS的IP地址，或者可预留其他服务器的IP地址
    [R1-GigabitEthernet0/0/1]dhcp server excluded-ip-address 192.168.1.254 //排除该地址
    [R1-GigabitEthernet0/0/1]dhcp server lease day 3 hour 12 //设置租期为3天半
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    ](https://blog.csdn.net/weixin_43522282/article/details/105046006)