划分DHCP语句：
set system services dhcp router 192.168.200.254
set system services dhcp router 192.168.3.254
set system services dhcp router 192.168.1.1
set system services dhcp pool 192.168.1.0/24 address-range low 192.168.1.2
set system services dhcp pool 192.168.1.0/24 address-range high 192.168.1.254
set system services dhcp pool 192.168.200.254/24 address-range low 192.168.200.200
set system services dhcp pool 192.168.200.254/24 address-range high 192.168.200.253
set system services dhcp pool 192.168.3.254/24 address-range low 192.168.3.100
set system services dhcp pool 192.168.3.254/24 address-range high 192.168.3.254
以上配置方法出现个奇怪现象：
用户端接入200网段时候，发现获取到3个网关，但是可以正常上网。
解决方法如下：
set system services dhcp pool 192.168.1.0/24 address-range low 192.168.1.2
set system services dhcp pool 192.168.1.0/24 address-range high 192.168.1.254
set system services dhcp pool 192.168.1.0/24 router 192.168.1.1
set system services dhcp pool 192.168.200.254/24 address-range low 192.168.200.200
set system services dhcp pool 192.168.200.254/24 address-range high 192.168.200.253
set system services dhcp pool 192.168.200.254/24 router 192.168.200.254
set system services dhcp pool 192.168.3.254/24 address-range low 192.168.3.100
set system services dhcp pool 192.168.3.254/24 address-range high 192.168.3.254
set system services dhcp pool 192.168.3.254/24 router 192.168.3.254
