| In this chapter, you learned about QoS models, tools, and design guidelines, including the following topics: Why QoS is important in a converged networkone in which data, voice, and video traffic flows The QoS-related requirements of various types of traffic The two models for deploying end-to-end QoS: IntServ and DiffServ The QoS tools available to implement QoS policies, including the following: - - Classification and marking Analyzing packets and sorting them into different categories, and then putting an indication of the classification of the packet within the packet header itself
- - Policing Tools that drop the excess traffic or modify its marking
- - Shaping Tools that buffer extra data until it can be sent, thus delaying but not dropping it
- - Congestion avoidance Monitoring traffic loads so that congestion can be anticipated and then avoided, before it becomes problematic
- - Congestion management Controlling congestion after it has occurred
- - Link-specific tools Compression (to reduce the bandwidth utilization) and LFI (to reduce the delay experienced)
- - AutoQoS A simple, automatic way to enable QoS configurations in conformance with the Cisco best-practice recommendations
The Cisco QoS Baseline guidelines for classifying traffic QoS design guidelines
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