The Cisco ACI Troubleshooting (CATS) v1.1 is a 3-day intensive troubleshooting training that provides engineers with knowledge and hands-on experience based on lab activities. This content is derived from real world troubleshooting techniques developed by Cisco TAC and now placed into an official training course. This training equips engineers with practical knowledge and understanding how to use available tools to troubleshoot new and existing Cisco Application Centric Infrastructure (ACI) solutions based on the most common issues seen by Cisco TAC.
The primary objective of this course is to enable Cisco ACI deployment partners to be more skilled with ACI delivery with their own customers, and potentially be in a position to offer optional Shared Support on ACI in the future. Optionally, this class can be delivered to customer engineers where appropriate.
Note: This course is not intended for beginners. It is designed for engineers who have at least an intermediate level of ACI operational knowledge and want to take the next step.

The CATS course is part of Cisco Black Belt Academy Aligned Content. It belongs to the stage: Black Belt ACI Support Stage-2.

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Date: from 24.11.2021 to 26.11.2021
Language: English
Location: Online (CET, UTC+01:00)
2850 $ Book now
Date: from 13.12.2021 to 15.12.2021
Language: English
Location: Online (CET, UTC+01:00)
2850 $ Book now
Date: from 19.1.2022 to 21.1.2022
Language: English
Location: Online (CET, UTC+01:00)
2850 $ Book now
Date: from 31.1.2022 to 2.2.2022
Language: English
Location: Online (CET, UTC+01:00)
2850 $ Book now


After finishing this course, you will be able to:
  • Troubleshoot Cisco ACI initial Deployment
  • Identify and use troubleshooting tools
  • Compare troubleshooting outputs from GUI and CLI
  • Identify and deploy fault and monitoring policies
  • Troubleshoot access policies and logical objects configuration
  • Troubleshoot Intra-Fabric forwarding
  • Troubleshoot L3Out datapath and transit routing
  • Troubleshoot VMM domain integration and microsegmentation
  • Understand prerequisites and requirements for opening a TAC case


The course contains the following components:
  • Troubleshoot Cisco ACI Initial Deployment
    • Cisco ACI Fabric Discovery
    • Access Policies
    • Logical Objects
    • Cisco ACI Upgrade
    • Cisco ACI Troubleshooting Tools
    • Unix/Linux Commands Primer
    • Object Model: Logical –Resolved –Concrete
    • Tools using API (Visore, MOQuery, iCurl)
    • Fault and Monitoring Policies
    • CLI Levels and Modes on APIC and Leaf Switches
  • Troubleshoot Intra-Fabric Forwarding
    • VLANs and VRF
    • Fabric Flooding
    • L2 Extension and STP
    • COOP, EPM and EPMC
    • Datapath L2
    • Datapath L3
    • Contract and Policy Enforcement
  • Troubleshoot ACI L3 Out
    • L3 Out Datapath
    • L3out with eBGP Configuration and Troubleshooting
    • L3out with OSPF Configuration and Troubleshooting
    • Transit Routing in ACI
    • L3out Subnet Flag Details
    • ARP in L3 Out
  • Troubleshooting VMM Integration
    • Integration with VMware vDS
    • Cisco AVS
    • Microsegmentation
    • Basic VMM Health Checks
    • VMM Troubleshooting Use Cases
    • AVS Troubleshooting and Debugging
  • Opening a Case with TAC

Labs Outline:
  • Cisco ACI fabric discovery failure (demo by instructor)
    • Discovering fabric components that failed to join fabric
    • Fixing joining issues
  • Cisco ACI Troubleshooting Tools
    • egrep
    • Visore
    • MOQuery
    • iCurl
  • Cisco ACI Intra-Fabric Forwarding
    • Troubleshoot EPG configuration parameters
    • Troubleshoot traffic forwarding within same BD
    • Troubleshoot traffic forwarding between EPGs in different BD
    • Troubleshoot security filtering
  • Cisco ACI L3 OUT Troubleshooting
    • Troubleshooting BGP Connectivity
    • Troubleshooting OSPF Connectivity
    • Troubleshooting Transit Connectivity
  • Cisco ACI VMM Troubleshooting
    • Troubleshooting VMware vCenter Integration
    • Associating ESX Host with DVS
    • Troubleshooting EPG Operations with VMM Domain
  • Exporting TechSupport
    • Define Remote Location
    • Creating and Exporting On-demand TechSupport Files
    • Exporting Audit Log

Prerequisite Knowledge

Attendees should be familiar with Cisco Data Center solutions and have fundamental understanding of Cisco ACI solution. In order to fully benefit from this course, the participants should have the following knowledge:
  • Professional level knowledge of networking technologies
  • Knowledge and understanding of VXLAN overlay networking
  • Good understanding of ACI concepts and principles (tenants, bridge domain, VRFs, EPGs, application profiles, policies)
  • Knowledge and understanding of Cisco ACI configuration and implementation
  • Professional level knowledge of server and server virtualisation technologies

Associated certifications