pppoe server , disable/enable with ssh, telnet or script

How to reset (disable/enable) pppoe server ?

scenario:

15 servers in the city , …

When reset Radius server, radius not accounting users …
when reset 15 pppoe server (disable/enable) and user connect again , radius work ok.

How to reset all 15 pppoe-server, with script, or any other way.

command from telnet, not work without print options ?

any solution ?