1:set vlans changzhoudaxuevlan vlan-id 1801
2:set interfaces xe-1/0/2 unit 0 family ethernet-switching port-mode trunk
3:set interfaces xe-1/0/2 unit 0 family ethernet-switching vlan members changzhoudaxuevlan
4:set interfaces vlan unit 1801 family inet6 address 2001:da8:a3:d001::1/64
5:set vlans changzhoudaxuevlan l3-interface vlan.2001 (关联vlan和三层接口)
