Troubleshooting TechNotes
Some links below may open a new browser window to display the document you selected.
-
Cisco Catalyst 9200 Switch Stack
- Troubleshoot Catalyst 9200/9300 Reloads Due to Stack Issues 07/Nov/2024
- Troubleshoot Control Plane Operations on Catalyst 9000 Switches 03/Apr/2024
- Troubleshoot Fiber Links on Catalyst 9000 Series Switches 28/Jan/2025
- Troubleshoot Smart Licensing with Policy on Catalyst 9K after Upgrade to 17.3.2 and Later 25/Jul/2023
-
Cisco Catalyst 9200L Switch Stack
-
- Cat9k Migration Best Practices for Cisco SDA 28/Aug/2021
- Communications Failure with Cisco Smart License Server 03/Nov/2023
- Configure Local Area Bonjour Unicast Mode on Catalyst 9000 Switches 05/Apr/2024
- Configure and Verify Netflow, AVC, and ETA on Catalyst 9000 Series Switches 19/Dec/2023
- Implement SSDP Best Practices on Catalyst 9000 Series Switches 01/Jul/2022
- Manage Catalyst 9000 Switches Using the Web UI 08/Jan/2025
- Migrate Catalyst License to Smart Licensing Using Policy 09/Mar/2022
- Operate and Troubleshoot DHCP Snooping on Catalyst 9000 Switches 12/Jun/2024
- Outputs to collect in the event of crash or unexpected reload 11/Mar/2021
- Potential Memory Leak 24/Apr/2023
- Troubleshoot ARP Resolution in SD-Access Fabric 26/Oct/2023
- Troubleshoot DHCP Issues on Catalyst 9000 DHCP Relay Agents 20/Oct/2023
- Troubleshoot DHCP Snooping Database Integrity Due to NTP 21/Mar/2025
- Troubleshoot Disk Errors 24/Oct/2023
- Troubleshoot Dot1x on Catalyst 9000 Series Switches 13/Sep/2023
- Troubleshoot EtherChannels on Catalyst 9000 Switches 08/Aug/2024
- Troubleshoot High CPU on Catalyst 9000 Caused by SISF Process 16/Jun/2025
- Troubleshoot Layer-2 Loops on Catalyst 9000 Series Switches 13/Nov/2024
- Troubleshoot MTU on Catalyst 9000 Series Switches 09/Oct/2024
- Troubleshoot Mac Address Table Manager on Catalyst 9000 Series Switches 14/May/2024
- Troubleshoot Network Related Audio Issues on Catalyst 9000 Switches 01/Aug/2023
- Troubleshoot Output Drops on Catalyst 9000 Switches 25/Feb/2025
- Troubleshoot Output from Catalyst 9000 Switches 03/Apr/2025
- Troubleshoot Port Flaps on Catalyst 9000 Series Switches 13/Mar/2024
- Troubleshoot Power over Ethernet on Catalyst 9000 Switches 05/Sep/2024
- Troubleshoot Precision Time Protocol on Catalyst 9000 Switches 15/May/2024
- Troubleshoot Rommon on Catalyst 9000 Series Switches 13/Jan/2025
- Troubleshoot SISF on Catalyst 9000 Series Switches 16/Jan/2024
- Troubleshoot SLP Smart Transport on Catalyst 9000 Switches 14/Mar/2025
- Troubleshoot Smart Licensing on Catalyst Platforms 09/Jul/2024
- Troubleshoot Unexpected Reloads on Catalyst 9000 Switches 27/Jul/2023
- Troubleshoot Unknown Protocol Drops in Catalyst 9000 Switches 25/Aug/2025New
- Understand FCS Errors, Input Errors, or Packet Loss on Devices Connected to Multigigabit Ethernet Ports 16/Apr/2024
- Understand Hardware Resources on Catalyst 9000 Switches 08/Apr/2025
- Understand Object Manager on Catalyst 9000 Switches 26/Feb/2025
- Understand Output Drops on Catalyst 9000 Switches 12/Aug/2025Updated
- Understand REP on Catalyst 9000 Switches 02/Sep/2025Updated
- Understand Smart Licensing for Catalyst Switching 28/Jul/2025
- Unsupported Power Supplies on Catalyst 9200 and 9200L switches 19/Jun/2020
- Upgrading Catalyst 9200 switches 06/Aug/2024
- Use iPerf on Catalyst 9000 Switches to Perform Bandwidth Tests 10/Mar/2023
- Validate Layer 2 Hardware on Catalyst 9000 Series Switches 23/Jun/2022
- Validate Security ACLs on Catalyst 9000 Switches 04/Feb/2022
- Verify SPAN and ERSPAN on Catalyst 9000 Series Switches 29/Apr/2025
- Verify and Troubleshoot Stackwise on Catalyst 9200/9300 11/May/2023
Support Documentation
Troubleshooting