核心交换机清除dhcp重新获取 clear ip dhcp binding *  clear ip dhcp binding  +ip 地址  //清除某个ip地址

DHCP排除地址 ip dhcp excluded-address 6.184.228.3 6.184.228.55

查看相邻设备信息 sho lldp neighbors detail 

设置本真vlan switchport trunk native vlan 120

设置路由 ip route 0.0.0.0 0.0.0.0 192.168.200.254

设置DHCP动态自动分配 ip dhcp pool zhuanglaoshi  hardware-address 7081.eb04.2cf8  host 192.168.165.221 255.255.255.0  dns-server 60.191.244.5 60.191.244.2   default-router 192.168.165.254 

设置DHCP信任

Ruijie#configure terminal Ruijie(config)#ip dhcp snooping    连接DHCP服务器的接口配置为可信任口 interface gigabitEthernet 0/49 ip dhcp snooping trust 

查状态看对应ip show ac-c cl | inc 6.184.231 show ip dhcp bin | inc 6.164.231

设置防环路 configure t rldp enable  interface range g0/1-23  rldp port loop-detect shutdown-port  exit errdisable recovery int