LAN Troubleshooting Essentials

LAN Troubleshooting Essentials

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LAN Troubleshooting Essentials

Designed to help IT Professionals learn the critical skills required to troubleshoot modern small to medium-sized enterprise networks.  This course is perfect for anyone that must support Wired NetworksWireless Networks, IP Telephony, IoT, Security Professionals, Sensors, or any other technologies that rely on a healthy Wired network to function.

Status: Availible Now**

All too often industry specialists deploy solutions on top of existing enterprise networks and provide customers with a list of requirements that must be met on the “other side of the house”. When the new solution does not work as designed, you have both sides of the house blaming each other. It’s also far too common for either side to be able to “prove” where the actual issue is. A simple solution to this common conundrum is to gain additional skills that allow you to identify those tricky LAN issues.

This course is not designed to teach you the basics of routing, switching, or network services for the first time. Instead, we're assuming you have those skills already. Our focus with LAN Troubleshooting Essentials is on how to identify problems with an existing network using several common scenarios and situations as our guiding reference.


Rockstar’s do not pass the ball when the game is on the line. ~ Avants

Module 01 – LAN Troubleshooting Methodologies

  • Our Troubleshooting Philosophy and Methodology

Module 02 – Define the Problem

  • Determine Problem Specifics
  • Determine Problem Scale
  • Gather Additional Details

Module 03 – Physical Layer Troubleshooting

  • Cables
  • Wireless connections
  • Interfaces

Module 04 – Data Link Layer Troubleshooting

  • Ethernet
  • Wi-Fi
  • Common Factors

Module 05 – Advanced Switching Concepts

  • VLANs
  • ACLs
  • Switch Stacking
  • EtherChannel
  • PoE Support
  • DHCP operations

Module 06 – Network Layer Troubleshooting (Layer 3)

  • IPv4 Address Review
  • IPv6 Address Review
  • Reaching a Destination with Routers
  • Routing Methods and Protocols
  • Static Routes
  • OSPF
  • DNS Troubleshooting

Module 07 – Application Connectivity Troubleshooting (Layers 4-7)

  • TCP Connections
  • UDP Connections
  • Available Services
  • Web Servers
  • Database Servers
  • E-mail Servers
  • Authentication Issues
  • Authentication servers
  • Authentication methods
  • Authentication credentials

Module 08 – Performance Troubleshooting

  • Defining Application Requirements
  • Data Communications Flow
  • End-to-End QoS

Module 09 – Troubleshooting Tools and Concepts

  • Open-Source/Free Tools
  • Professional Tools
  • MTTR Analysis
  • Network Monitoring

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