Introduction
Documenting and Baselining the Network
Network Baselining
Network Baselining Overview
Planning for the First Baseline
Identifying Devices and Ports of Interest
Determining the Duration of the Baseline
Using the Baseline Data
Identifying Undesired Network Behavior
Identifying Thresholds
Predicting Long-Term Performance and Capacity Trends
Verifying Policies
Network Configuration Documentation
Network Configuration Documentation Overview
Identifying the Components of a Network Configuration Table
Identifying the Components of a Topology Diagram
Discovering Network Configuration Information
Describing the Process of Creating Network Documentation
Creating Network Documentation
End-System Configuration Documentation
Identifying the Components of an End-System Network Configuration Table
Identifying the Components of an End-System Topology Diagram
Identifying Commands and Applications Used to Discover Information about End-System Configurations
Discovering End-System Configuration Information
Creating End-System Network Configuration Documentation
Summary
Key Terms
Check Your Understanding
Troubleshooting Methodologies and Tools
Using a Layered Architectural Model to Describe Data Flow