An enhanced token bucket marker for Diffserv networks

The DiffServ architecture has been widely accepted as a scalable framework for providing quality of service in the Internet. However there are still unresolved issues, in particular the inability of TCP aggregates to reach their guaranteed rates, within some per-hop-behaviors proposed for use in DiffServ. We propose an enhanced token bucket marker, that is simple, efficient and effective compared to other proposed schemes, in realizing throughput guarantees of TCP aggregates. We provide a theoretical analysis and simulation studies that support this claim.