ros ppp隧道up或者down的时候，可以写脚本，脚本可以调用的参数$user $local-address $remote-address $caller-id $called-id $interface

官方文档：

https://wiki.mikrotik.com/wiki/Manual:PPP_AAA

on-up (script; Default: )

Execute script on user login-event. These are available variables that are accessible for the event script: user local-address remote-address caller-id called-id interface

我之前做的一个公司案例，应用上面的技术

https://www.cnblogs.com/itfat/p/12707513.html