DHCP：

set system services dhcp pool 192.168.5.0/24 address-range low 192.168.1.11   ###配置可用地址范围，11到200

set system services dhcp pool 192.168.5.0/24 address-range high 192.168.1.200

set system services dhcp pool 192.168.5.0/24 name-server 114.114.114.114    ###配置主/备DNS

set system services dhcp pool 192.168.5.0/24 name-server 8.8.8.8

set system services dhcp pool 192.168.5.0/24 router 192.168.1.1    ###配置默认网关

Juniper DHCP配置