Communication systems may benefit from more accurate information regarding the passage of data through a network. For example, certain wireless communication systems may benefit from throughput guidance based on user plane insight and optional radio channel information. A method can include monitoring the bandwidth available on at least one of a per data bearer, per application or per transmission control protocol flow basis. The method can also include providing throughput guidance to an entity configured to attempt at least one of transmission control protocol or content level optimization. The throughput guidance can be configured to assist the entity in attempting the at least one of the transmission control protocol or content level optimization.