The second component of our proposal requires that administrators update router software to maintain multiple queues based on IP Precedence. The effect of the precedence value is that when resource contention occurs, it affects mainly the lower priority traffic. This scheme does not require global changes; routers which do not implement the scheme merely treat all traffic as before, at the same priority with FIFO-based queueing. But the scheme can achieve substantial local improvement in the face of congestion. Network service providers will have the opportunity to selectively enable IP Precedence based queuing as they perceive a need, and even disable it in case of misuse. The NSPs thus have a great deal of flexibility. As soon as a few routers implement multiple queues (especially on the backbone), the incentive for users to implement precedence in their packets is expected to increase significantly.