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F5 Networks Troubleshooting BIG-IP


This course gives networking professionals hands-on knowledge of how to troubleshoot a BIG-IP system using a number of troubleshooting techniques as well as troubleshooting and system tools. This course includes lectures, labs, and discussions.

Course Objectives | Troubleshooting BIG-IP

  • Describe the role of the BIG-IP system as a full proxy device in an application delivery network;
  • Set up, start/restart/stop, license, and provision the BIG-IP system;
  • Create a basic network configuration on the BIG-IP system including VLANs and self IPs;
  • Use the Configuration utility and TMOS Shell (tmsh) to manage BIG-IP resources and use as a resource when troubleshooting;
  • Create, restore from, and manage BIG-IP archives;
  • Understand and implement troubleshooting methodology to find and resolve issues;
  • View resource status, availability, and statistical information and use this information to determine how the BIG-IP system is currently processing traffic;
  • Use iApps to update BIG-IP configuration;
  • Perform troubleshooting and problem determination activities including using the iHealth diagnostic tool, researching known issues and solutions on AskF5, submitting a problem ticket to F5 Technical Support, and view traffic flow using tcpdump;
  • Understand the tools (ping, netstat, tcpdump, ssldump, WireShark, diff, Kdiff3, Fiddler, BIG-IP logs, etc.) available to use to identify BIG-IP and network issues from bottom to top;
  • List log files available, understand log levels, and use the appropriate files, log levels, and filters for troubleshooting;
  • Use High Speed Logging (HSL) and SNMP trap implementations to perform troubleshooting and problem determination activities;
  • Describe the role of iRules in affecting traffic behavior and how to use them to aid with troubleshooting and problem determination.

Course Topics | Troubleshooting BIG-IP

  • Configuration Project
  • Troubleshooting Methodology
  • F5 Support
  • Troubleshooting – Bottom to Top
  • Troubleshooting Tools
  • Using System Logs


Lesson 1 : Setting Up the BIG-IP System

  • Introducing the BIG-IP System 
  • Initially Setting Up the BIG-IP System 
  • Archiving the BIG-IP System Configuration

Lesson 2 : Reviewing Local Traffic Configuration

  • Reviewing Nodes, Pools, and Virtual Servers 
  • Reviewing Address Translation 
  • Reviewing Routing Assumptions 
  • Reviewing Application Health Monitoring 
  • Reviewing Traffic Behavior Modification with Profiles 
  • Reviewing the TMOS Shell (TMSH) 
  • Reviewing Managing BIG-IP Configuration Data 
  • Reviewing High Availability (HA)

Lesson 3 : Troubleshooting Methodology

  • Step-By-Step Process 
  • Step 1: State the Problem 
  • Step 2: Specify the Problem 
  • Step 3: Map the System 
  • Step 4: Develop Possible Causes 
  • Step 5: Test Theories 
  • Step 6: Iterate Until Root Cause Identified 
  • Documenting a Problem 
  • Putting Troubleshooting Steps to Use

Lesson 4 : Working with F5 Support

  • Leveraging F5 Support Resources 
  • AskF5.com 
  • DevCentral 
  • iHealth 
  • Leveraging F5 Labs 
  • Working with F5 Technical Support 
  • Running End User Diagnostics (EUD) - Hardware Only 
  • New Platform Diagnostic Tools 
  • Always-On Management (AOM) Subsystem 
  • Requesting Return Materials Authorization 
  • F5’s Software Version Policy 
  • Managing the BIG-IP License for Upgrades 
  • Managing BIG-IP Disk Space 
  • Upgrading BIG-IP Software

Lesson 5 : Troubleshooting – Bottom to Top

  • Introducing Differences between BIG-IP and LINUX Tools 
  • Troubleshooting with Layer 1/Layer 2 Tools 
  • Troubleshooting with Layer 2/Layer 3 Tools 
  • Troubleshooting with Layer 3 Tools 
  • Troubleshooting with LINUX Tools 
  • Troubleshooting Memory and CPU 
  • Troubleshooting with watch 
  • Troubleshooting with Additional tmsh commands

Lesson 6 : Troubleshooting Tools

  • tcpdump 
  • Wireshark 
  • ssldump 
  • Fiddler 
  • diff 
  • KDiff3 
  • cURL

Lesson 7 : Using System Logs

  • Configuring Logging 
  • Log Files 
  • Understanding BIG-IP Daemons Functions 
  • Triggering an iRule 
  • Deploying and Testing iRules 
  • Application Visibility and Reporting

Lesson 8 : Troubleshooting Lab Projects

  • Network Configurations for Project














Administering BIG-IP, OSI model, TCP/IP addressing and routing, WAN, LAN environments, and server redundancy concepts; or having achieved TMOS Administration Certification


This course assumes that you have successfully completed the Administering BIG-IP course, or equivalent, and have hands-on experience working in a production BIG-IP environment for several months. You should have a solid understanding of the environment in which the BIG-IP is deployed. This course is meant for BIG-IP administrators, network engineers, applications engineers, etc., who will be responsible for troubleshooting problems associated with their BIG-IP system.


2 Days Course

Class Dates

Good to Run
Remote Live

This class runs from 10:00 AM to 06:00 PM EST
Remote Live

This class runs from 10:00 AM to 06:00 PM EST

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