• Network discovery and documentation
• End-system discovery and documentation
• Analyzing traffic flow using IOS tools
• Creating a network baseline
• Problem solving methodology
• Cisco IOS diagnostic commands
• Troubleshooting the physical and data-link layers, including Ethernet, Frame Relay, and T1 problems
• Troubleshooting Catalyst switch problems
• Troubleshooting network layer problems, including EIGRP, OSPF, and BGP
• Troubleshooting application layer problems

Anyone responsible for troubleshooting internetworks based on Cisco routers and switches. Recommended for technical professionals pursuing Cisco Career Certification.

• Creating Network Configuration Documentation
  • Components of a Network Configuration Table
  • Components of a Topology Diagram
  • Discovering Network Configuration on a Router or Multilayer Switch
  • Discovering Network Configuration on a Layer 2 Switch

• Components of an End-System Configuration Table
• Components of an End-System Topology Diagram
• Commands and Applications Used to Discover End-System Network Configuration

• Applying a Layered Model to a Network
  • Comparing Layered Network Models
  • The Encapsulated Data Flow Process
  • The Layers of a Logical Model
• Describing a General Troubleshooting Process
  • General Troubleshooting Processes
  • Gathering Symptoms
  • Isolating Problems
  • Correcting Problems
• Gathering Symptoms
  • Network Symptoms
  • User Symptoms
  • End-System Symptoms
• Selecting a Troubleshooting Approach
  • The Bottom-Up Approach
  • The Top-Down Approach
  • The Divide-and-Conquer Approach

• Identifying Physical Layer and Data Link Layer Symptoms
  • Cisco IOS Commands
  • Windows Commands
  • Unix Commands
• Isolating Problems
  • Serial Interface
  • Frame Relay
  • Ethernet
  • FastEthernet

• Common Symptoms of Network Layer Problems
• IOS Commands for Network Layer Troubleshooting
  • General Commands
  • ARP-Related Commands
  • Routing Table Commands
  • Interface-Related Commands
  • BGP-Related Commands
  • Traffic-Related Commands
  • Access List-Related Commands
• Windows and Unix Commands for Network Layer Troubleshooting
• Case Study
• Identifying Support Resources

• Common Symptoms of Transport Layer Problems
• Common Symptoms of Application Layer Problems
• IOS Commands for Transport and Application Layer Troubleshooting
  • General Commands
  • Name Resolution Commands
  • Policy-Related Commands
  • File Management Commands
  • DHCP-Related Commands
  • SNMP- and NTP-Related Commands
• Testing Network Applications With Telnet
• Windows and Unix Commands for Transport and Application Layer
• Case Study

Use Cisco IOS diagnostic commands to discover and document IP addresses, routing protocols, STP configuration, trunk links, EtherChannels, and more.

Use end-system command-line tools and applications to discover and document the configuration of a Windows workstation and a Linux workstation.

Utilize Cisco IOS tools to examine low-level traffic flow on routers. Examine the ARP protocol. Examine the effects of caching on IOS debug tools. Observe ICMP traffic.

These three labs allow you to practice low-level troubleshooting skills on Ethernet, FastEthernet, Frame Relay, and T-1 links. You will be given a pre-configured network with a variety of problems, which you must then diagnose and solve.

These four labs allow you to practice network-layer troubleshooting skills. You will be given a pre-configured network with a variety of problems, which they must then diagnose and solve. Scenarios will include IP addressing problems, EIGRP, OSPF, and BGP problems, interface problems, redistribution problems, and more.

This lab allows you to practice their troubleshooting skills on problems related to transport and application layer protocols, including HTTP, FTP, TFTP, and more.