The current IP network utilizes best-effort mechanism to satisfy bandwidth requirements

lacking of manageability and maintainability.The next generation IP networks should have the ability to allocate bandwidth efficiently to satisfy different QoS requests from different users and maximize the revenue for carriers.This paper proposes a generic revenue-based bandwidth allocation model and presents the RBA (Revenue-based Bandwidth Allocation) problem can be classified into FRBA(Flexible RBA) and SRBA(Strict RBA) problems.This paper proves that bandwidth allocation problem is equivalent to Knapsack problem and provides Enhanced Greedy Algorithm (EGA) to resolve it.The experiments on a 128Gbps distributed router show that EGA is fair and can be calculated in polynomial time.EGA has been implemented on the real-world network devices

which are running on the carrier's network.