The following Quick Learning Modules are focused on a specific lesson or topic from the current QOS curriculum.
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Introduction to Modular QoS CLI
By the end of this module you will be able to:
· Define the purpose and uses of Modular QoS CLI
· Describe the basic functions of class maps, policy maps and service policies
· Describe how to configure class maps, policy maps and service policies using MQC commands
· Monitor class maps, policy maps and service policies using MQC commands
Congestion Management Configuring CBWFQ and LLQ
By the end of this module you will be able to:
· Explain the purpose, features and benefits of CBWFQ
· Describe Class-based Weighted Fair Queuing (CBWFQ) features and explain how CBWFQ works using a block diagram
· Explain the purpose, features and benefits of Low-Latency Queuing (LLQ)
· Explain how LLQ works using a block diagram and identify situations in which LLQ is most appropriate for providing QoS
· Configure CBWFQ and LLQ to manage congestion.
Congestion Avoidance Introducing RED and WRED
By the end of this module you will be able to you will be able to:
· Describe RED and how it can be used to prevent congestion
· Describe the elements of a RED traffic profile used to implement the RED packet-dropping strategy
· Describe the different packet drop modes of RED
· Describe the effects of using RED on TCP traffic by comparing TCP traffic flows both before and after the application of RED
· Identify the points in a network where congestion avoidance mechanisms are commonly deployed in enterprise and service provider networks
· Describe WRED and how it can be used to prevent congestion
· Describe the traffic profiles used in WRED implementations
· Identify the Cisco IOS commands required to configure CB-WRED and DSCP-based CB-WRED
