if I understand you correctly, you're talking about a 100M circuit where 10M out of it is considered "Premium" traffic based on how you mark it outbound to the provider?
Most likely be have an exceed action that marks the traffic with a lower priority. If you're purchasing 100M total from the provider than they have no reason to police the traffic above at 10M. You would have to ask the provider to verify though because you never know what's going on in someone else head when they configure a service.
