How to use pfsense to limit traffic to servers?

I've just upgraded my work internet connection and I need to limit bandwidth available to my 4 public ip servers.

I really love pfsense and I use it for openvpn site to site, nat and firewall but I need some advice.

The request is to leave public ip to servers in the same class as psense box but at the same time limit available traffic to them.

Thanks and sorry for my English..