Troubleshooting the Cisco ACI Fabric v2


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Classic data centers integrate many different components from many different environments, creating a very complex and decentralized approach to troubleshooting application deployment. Just as ACI allows for centralized management focused on application needs, you can troubleshoot your ACI fabric from a centralized location with the requirements of the application in mind.

The first step in any troubleshooting scenario is to fully understand your existing ACI environment. In this two day course, you have the option of configuring your own fabric as a foundation for the troubleshooting labs or discover a pre-built environment. Either path is designed to help you better understand your existing environment and is key to troubleshooting any problem.

You will use common ACI troubleshooting tools, such as Visore, API Inspector, and various show commands to identify problems that impact fabric-wide connectivity. You will use the APIC CLI to expose misconfigurations that trigger fault messages in the APIC GUI and practice applying GUI and CLI tools to various troubleshooting scenarios.


  • Field engineers
  • Support engineers
  • Server administrators
  • Network administrators
  • Storage administrators


DCICN or DCICT or equivalent experience or knowledge
Server virtualization knowledge

Learning Objectives

  • Discover a new ACI fabric
  • Confirm functionality of a fabric
  • Apply a basic troubleshooting methodology
  • Use CLI troubleshooting tools to discover misconfigurations
  • View faults in GUI
  • Use Visore to query MOs
  • Use common troubleshooting tools to troubleshoot L3 OUT, Contracts, and Faults

Module 1 Deploy the fabric

  • Lesson 1: Initializing the ACI environment
  • Lesson 2: Confirming functionality

Module 2 Use Visore and other troubleshooting tools

  • Lesson 1: Use Visore to query MOs
  • Lesson 2: Use GUI troubleshooting tools

Module 3 Verify VLANs

  • Lesson 1: Using the APIC GUI to verify VLANs
  • Lesson 2: Using the APIC CLI to verify VLANs

Module 4 Verify and track connectivity of fabric end points

  • Lesson 1: Using the APIC GUI to verify and track connectivity
  • Lesson 2: Using the APIC CLI to verify and track connectivity

Module 5 Troubleshoot

  • Lesson 1: Troubleshoot L3 OUT, Routing connectivity
  • Lesson 2: Troubleshoot Contracts
  • Lesson 3: Review and Document Faults