Post-upgrade workflow
Outlines the post-upgrade workflow, including required steps and considerations to ensure successful completion after a system upgrade
Recommendations for device health check
Outlines recommendations for determining device health, including pass criteria and indicators for further analysis based on install state, redundancy, stack and module status, resource utilization, counters, network recovery, logs, applications, and service confirmation.
Command set for system and application health checks
Lists the command set for performing system and application health checks on switches, covering core, redundancy, StackWise, StackWise Virtual, network services, and application hosting checks, as well as additional commands for troubleshooting abnormal conditions across various hardware and feature configurations.
Verify install state, ISSU state, and redundancy
Guides you through verifying install and ISSU readiness, checking ISSU operation history, assessing redundancy health and synchronization, and confirming configuration synchronization to ensure system stability before and after an upgrade.
Verify CPU, memory, and control-processor health
Guides you through verifying switch CPU, memory, and control-processor health, including checking platform resources, IOSd CPU and memory usage, and performing additional platform process diagnostics as needed.
Verify hardware and traffic stability
Guides you through verifying hardware status, interface and traffic stability, port-channel and spanning-tree health, and reviewing reload reasons, logs, and crash files after an upgrade.
Verify physical StackWise health
Guides you through verifying the physical health of StackWise systems, including checks for stack membership, ring speed and redundancy, and stack-port synchronization and stability.
Verify StackWise Virtual system health
Guides you through verifying StackWise Virtual system health, including StackWise Virtual Link status, dual-active detection, and module and supervisor redundancy on StackWise Virtual systems and modular chassis.
Verify network services and application recovery
Guides you through verifying recovery of routed interfaces, route summaries, OSPF neighbors, BGP sessions, HSRP group states, and application or monitoring reachability after an upgrade, comparing results with the pre-upgrade baseline.
Verify application-hosting health
Outlines procedures for verifying IOx service health, checking hosted application state, reviewing application details, and assessing resource utilization against pre-upgrade baselines to ensure application-hosting integrity after an upgrade.
Additional references
Provides links to Cisco references for Catalyst 9000 series switches, including health checks, ISSU, control-plane troubleshooting, latency and packet drops, StackWise, StackWise Virtual, and application hosting to support further analysis and device health verification.