Network Performance and Routing

  1. Quality of Service (QoS) for Performance Management
    1. QoS Fundamentals
      1. QoS Definition and Objectives
        1. Service Level Requirements
          1. Application Performance Expectations
            1. Network Resource Management
            2. QoS Models
              1. Best-Effort Service Model
                1. FIFO Queuing
                  1. No Service Guarantees
                  2. Integrated Services (IntServ)
                    1. Resource Reservation
                      1. Per-Flow State
                        1. Resource Reservation Protocol (RSVP)
                          1. Guaranteed Service
                            1. Controlled Load Service
                            2. Differentiated Services (DiffServ)
                              1. Per-Hop Behaviors (PHBs)
                                1. Traffic Classes
                                  1. Scalable Implementation
                                2. QoS Requirements by Application Type
                                  1. Voice Applications
                                    1. Latency Requirements
                                      1. Jitter Tolerance
                                        1. Packet Loss Sensitivity
                                        2. Video Applications
                                          1. Bandwidth Requirements
                                            1. Latency and Jitter Constraints
                                              1. Packet Loss Impact
                                              2. Data Applications
                                                1. Throughput Requirements
                                                  1. Latency Tolerance
                                                    1. Loss Recovery Mechanisms
                                                2. Traffic Classification and Marking
                                                  1. Classification Concepts
                                                    1. Traffic Identification Methods
                                                      1. Classification Criteria
                                                        1. Layer 2 Information
                                                          1. Layer 3 Information
                                                            1. Layer 4 Information
                                                              1. Application Layer Information
                                                            2. Layer 2 Marking
                                                              1. Class of Service (CoS)
                                                                1. 802.1p Priority Bits
                                                                  1. CoS Values and Meanings
                                                                  2. VLAN Priority
                                                                    1. Frame Relay DE Bit
                                                                    2. Layer 3 Marking
                                                                      1. IP Precedence
                                                                        1. ToS Byte Usage
                                                                          1. Precedence Values
                                                                          2. Differentiated Services Code Point (DSCP)
                                                                            1. DSCP Field Structure
                                                                              1. Standard DSCP Values
                                                                                1. Per-Hop Behavior Mapping
                                                                              2. Classification Tools
                                                                                1. Access Control Lists (ACLs)
                                                                                  1. Network-Based Application Recognition (NBAR)
                                                                                    1. Deep Packet Inspection (DPI)
                                                                                  2. Congestion Management
                                                                                    1. Queuing Fundamentals
                                                                                      1. Queue Types and Behaviors
                                                                                        1. Queue Depth and Sizing
                                                                                          1. Scheduling Algorithms
                                                                                          2. Basic Queuing Methods
                                                                                            1. First-In, First-Out (FIFO)
                                                                                              1. Simple Implementation
                                                                                                1. No Prioritization
                                                                                                  1. Tail Drop Behavior
                                                                                                  2. Priority Queuing (PQ)
                                                                                                    1. Strict Priority
                                                                                                      1. Queue Starvation Issues
                                                                                                        1. Low-Latency Benefits
                                                                                                      2. Advanced Queuing Methods
                                                                                                        1. Custom Queuing (CQ)
                                                                                                          1. Byte-Count Based
                                                                                                            1. Guaranteed Bandwidth
                                                                                                            2. Weighted Fair Queuing (WFQ)
                                                                                                              1. Flow-Based Fairness
                                                                                                                1. Automatic Classification
                                                                                                                  1. Interactive Traffic Protection
                                                                                                                  2. Class-Based Weighted Fair Queuing (CBWFQ)
                                                                                                                    1. User-Defined Classes
                                                                                                                      1. Bandwidth Guarantees
                                                                                                                        1. Configurable Weights
                                                                                                                        2. Low Latency Queuing (LLQ)
                                                                                                                          1. Priority Queue with Policing
                                                                                                                            1. CBWFQ Integration
                                                                                                                              1. Voice Optimization
                                                                                                                            2. Modern Queuing Techniques
                                                                                                                              1. Hierarchical Queuing
                                                                                                                                1. Deficit Round Robin (DRR)
                                                                                                                                  1. Stochastic Fair Queuing (SFQ)
                                                                                                                                2. Congestion Avoidance
                                                                                                                                  1. Congestion Avoidance Concepts
                                                                                                                                    1. Proactive vs. Reactive Approaches
                                                                                                                                      1. Queue Management Strategies
                                                                                                                                        1. TCP Congestion Control Integration
                                                                                                                                        2. Random Early Detection (RED)
                                                                                                                                          1. RED Algorithm
                                                                                                                                            1. Average Queue Depth Calculation
                                                                                                                                              1. Drop Probability Curves
                                                                                                                                                1. RED Parameters
                                                                                                                                                2. Weighted RED (WRED)
                                                                                                                                                  1. DSCP-Based Drop Profiles
                                                                                                                                                    1. Multiple Drop Precedences
                                                                                                                                                      1. Explicit Congestion Notification (ECN)
                                                                                                                                                      2. Tail Drop
                                                                                                                                                        1. Simple Implementation
                                                                                                                                                          1. Burst Handling
                                                                                                                                                            1. TCP Global Synchronization
                                                                                                                                                          2. Traffic Policing and Shaping
                                                                                                                                                            1. Policing vs. Shaping Concepts
                                                                                                                                                              1. Rate Limiting Approaches
                                                                                                                                                                1. Burst Handling Differences
                                                                                                                                                                  1. Implementation Locations
                                                                                                                                                                  2. Token Bucket Algorithm
                                                                                                                                                                    1. Token Generation Rate
                                                                                                                                                                      1. Bucket Depth
                                                                                                                                                                        1. Burst Size Calculation
                                                                                                                                                                          1. Committed and Excess Rates
                                                                                                                                                                          2. Leaky Bucket Algorithm
                                                                                                                                                                            1. Constant Output Rate
                                                                                                                                                                              1. Buffer Management
                                                                                                                                                                                1. Smoothing Effects
                                                                                                                                                                                2. Traffic Policing
                                                                                                                                                                                  1. Single-Rate Policing
                                                                                                                                                                                    1. Dual-Rate Policing
                                                                                                                                                                                      1. Policing Actions
                                                                                                                                                                                        1. Drop
                                                                                                                                                                                          1. Mark Down
                                                                                                                                                                                            1. Transmit
                                                                                                                                                                                          2. Traffic Shaping
                                                                                                                                                                                            1. Generic Traffic Shaping (GTS)
                                                                                                                                                                                              1. Class-Based Shaping
                                                                                                                                                                                                1. Adaptive Shaping
                                                                                                                                                                                                  1. Shaping vs. Queuing Integration
                                                                                                                                                                                                  2. Rate Limiting Parameters
                                                                                                                                                                                                    1. Committed Information Rate (CIR)
                                                                                                                                                                                                      1. Peak Information Rate (PIR)
                                                                                                                                                                                                        1. Committed Burst Size (CBS)
                                                                                                                                                                                                          1. Excess Burst Size (EBS)
                                                                                                                                                                                                        2. QoS Implementation and Management
                                                                                                                                                                                                          1. QoS Policy Configuration
                                                                                                                                                                                                            1. Modular QoS CLI (MQC)
                                                                                                                                                                                                              1. Class Maps
                                                                                                                                                                                                                1. Policy Maps
                                                                                                                                                                                                                  1. Service Policies
                                                                                                                                                                                                                  2. Legacy QoS Configuration
                                                                                                                                                                                                                    1. Hierarchical Policies
                                                                                                                                                                                                                    2. QoS Deployment Strategies
                                                                                                                                                                                                                      1. End-to-End QoS Design
                                                                                                                                                                                                                        1. Campus QoS Implementation
                                                                                                                                                                                                                          1. WAN QoS Considerations
                                                                                                                                                                                                                            1. Service Provider QoS
                                                                                                                                                                                                                            2. QoS Monitoring and Verification
                                                                                                                                                                                                                              1. QoS Statistics Collection
                                                                                                                                                                                                                                1. Performance Measurement
                                                                                                                                                                                                                                  1. Policy Compliance Verification
                                                                                                                                                                                                                                    1. Troubleshooting QoS Issues

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                                                                                                                                                                                                                                6. Advanced Routing Concepts and Techniques

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                                                                                                                                                                                                                                8. Network Optimization and Troubleshooting