Juniper交换机默认是关闭GUI的，要是想开启的话用以下命令
root@:RE:0% cli
root> configure
Entering configuration mode

[edit]
root# set system root-auth plain-text-password
<键入root密码>
root# set interfaces me0 unit 0 family inet address 172.16.20.22/24
root# set system services web-management http interface me0
# commit