Outline

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Module 8: Quality of Service

Module Overview |

8.1

Quality of Service Requirements

8.1.1 | Quality of Service defined
8.1.2 | Loss
8.1.3 | Delay or latency
8.1.4 | Delay variation or jitter
8.1.5 | Network availability
8.1.6 | Provisioning
8.1.7 | Quality of Service requirements for data
8.1.8 | Quality of Service requirements for voice
8.1.9 | Quality of Service requirements for video

8.2

Quality of Service Mechanisms

8.2.1 | Quality of Service mechanisms
8.2.2 | Best-effort service
8.2.3 | Integrated services model
8.2.4 | Differentiated services model
8.2.5 | Traffic marking
8.2.6 | Modular QoS command-line interface (CLI)
8.2.7 | Using the class-map command to define traffic classes
8.2.8 | Defining the QoS policy – the policy-map
8.2.9 | Applying the policy to an interface – the service-policy

8.3

Classification at the Access Layer

8.3.1 | Classification at the access layer
8.3.2 | Trusting the CoS
8.3.3 | Configuring CoS trust using the IOS
8.3.4 | Assigning CoS on a per-port basis
8.3.5 | Re-writing the CoS
8.3.6 | Using a MAC ACL to assign a DSCP value
8.3.7 | Configuring DSCP using a MAC ACL
8.3.8 | Using an IP ACL to define the DSCP or precedence

8.4

Policing and Marking

8.4.1 | Policing and marking
8.4.2 | Individual policers
8.4.3 | Aggregate policers
8.4.4 | Token bucket
8.4.5 | Classification and policing using Committed Access Rate (CAR)
8.4.6 | Configuring the policed DSCP map
8.4.7 | Configuring classification using CAR
8.4.8 | Configuring policing using CAR

8.5

Scheduling

8.5.1 | Scheduling
8.5.2 | FIFO queue
8.5.3 | Weighted Fair Queuing (WFQ)
8.5.4 | WFQ and IP precedence
8.5.5 | Class Based Weighted Fair Queuing (CBWFQ)
8.5.6 | Configuring CBWFQ
8.5.7 | CBWFQ bandwidth allocation

8.6

Congestion Avoidance

8.6.1 | Congestion avoidance
8.6.2 | Weighted random early detection (WRED)
8.6.3 | Configuring WRED on a physical interface
8.6.4 | Verifying WRED configuration
8.6.5 | Configuring WRED with CBWFQ
8.6.6 | Low Latency Queuing (LLQ)
8.6.7 | Configuring LLQ

8.7

Traffic Shaping

8.7.1 | Traffic shaping overview
8.7.2 | Generic Traffic Shaping (GTS)
8.7.3 | Configuring GTS for an interface
8.7.4 | GTS for Frame Relay networks
8.7.5 | Configuring GTS for Frame Relay networks
8.7.6 | Verifying GTS configuration

8.8

QoS Using Low Speed Links

8.8.1 | QoS using low speed links
8.8.2 | Link efficiency mechanisms
8.8.3 | Link fragmentation and interleaving
8.8.4 | Link fragmentation and interleaving (LFI): Multilink PPP
8.8.5 | Compressed Real-Time Protocol (cRTP)
8.8.6 | Configuring cRTP

8.9

Hands-on Lab Exercises

8.9.1 | Classifying traffic using CoS at the access layer
8.9.2 | Introduction to the modular QoS command-line interface
8.9.3 | QoS classification and policing using CAR
8.9.4 | Weighted Fair Queuing
8.9.5 | Configuring WRED on an interface
8.9.6 | Configuring WRED with CBWFQ
8.9.7 | Configuring LLQ
8.9.8 | Configuring GTS
8.9.9 | QoS manually configured FRTS
8.9.10 | QoS dynamically configured FRTS
8.9.11 | Link fragmentation and interleaving
8.9.12 | QoS cRTP

Module Summary |
Module Quiz |

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