Overview

Device Health surfaces network device issues across your infrastructure and helps you correlate them with configuration changes. Use Device Health to:

• Identify degraded devices and affected metrics across your fleet
• Correlate metric anomalies with configuration changes on a shared timeline
• Launch Bits Investigation to pinpoint root causes
• Take action by rolling back configuration changes directly from the investigation flow

Navigate to Infrastructure > Devices > Health for a fleet-wide view of all device issues. To see active issues for a specific device, select it from the Devices list or any NDM visualization to open any active issues in the device side panel.

Investigate an issue

Select an issue to open the issue panel, which shows:

• A plain-language summary of what happened
• A graph of the affected metric showing when the issue started and its severity
• A timeline overlay showing when configuration changes occurred on the device, so you can correlate metric anomalies with specific changes

Launch a Bits Investigation

From a selected issue, you can trigger a Bits Investigation. Bits Investigation analyzes the issue and provides:

• A step-by-step summary of the investigation and its findings
• Root cause analysis in plain language

To start a Bits Investigation, click Investigate further with Bits. Click View full investigation to open the complete investigation in a new tab. For more information, see Bits Investigation.

Apply a proposed fix

Take action directly from the issue panel by applying the proposed fix (such as rolling back the configuration to the last trusted version). See a diff of the exact configuration change to be applied.

View impacted devices and dependencies

The issue panel also shows other devices and dependencies potentially affected by the same issue, helping you assess the scope of impact across your network. To investigate further, select any device in the diagram or the affected devices list to open its Device page.

Further Reading

Additional helpful documentation, links, and articles:

Network Configuration ManagementDOCUMENTATION Bits InvestigationDOCUMENTATION NDM TroubleshootingDOCUMENTATION