QoS Rate Limiting and Queuing Traffic

The preceding two chapters discussed router performance management, equipment-quality management, ATM quality of service (QoS), Layer 3 switching methods, compression, applying end-to-end QoS with integrated services, and marking traffic priority with differentiated services. After you have app lied these QoS methods, you then need to consider the most effective queuing mechanism for each specific traffic type. Each interface uses some type of queuing; the type you decide to use will depend on the amount of control over traffic your service policies require, the link bandwidth, and the traffic-quality requirements. This chapter discusses various queuing methods and th eie application, including the following:

• First-In, Hrst-Out Queuing

• Weighted Fair Queuing

• Priority Queuing

• Custom Qoesing

After covering "the basic four" queuing types, this chapter explores more advanced traffic shaping, queuing, policing, and marking technologies, such as the following:

• Generic traffic shaping

• Class-Based Weighted Fair Queuing

• alass-based shaping i Traffic poi icing

• Setting IP RTP Priority

• Uoin g committed accecs rate to enfoece tra ffic polloy

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