OSPF connected interfaces

Hello,

We have switched from a bridged network to OSPF, by deploying routers at our towers.
The CCR Router at our data center has some interfaces connected to cache servers, where by we have mangle rule with the interface specified to burst users when accessing cache traffic.

Now that we’ve deployed ospf, the users connected from the towers are only limited to their subscribed plan, they can not enjoy the cache bursts. Any suggestions how to redistribute the connected interfaces? or any other suggestions?

Please assist.

The may be some options using policy routing. Can you post a diagram of what you have? It would be much easier to comment with some context as to the layout.