Limit PPTP Client bandwith

Hi all,

We are looking for a problem we are issuing right now. Actually we have around 500 routers connected to a central server through a PPTP client.

The question is: Can I limit the bandwith (in each router, mikrotik side) of the PPTP client? We just need that tunnel to manage the router then with few bandwith its more than enough to do it.

Thanks!