Bootup diagnostics also include a set of tests that are common with health monitoring diagnostics.
Bootup diagnostics log any failures to the onboard failure logging (OBFL) system. Failures also trigger an
LED display to indicate diagnostic test states (on, off, pass, or fail).
You can configure Cisco Nexus device to either bypass the bootup diagnostics or run the complete set of
bootup diagnostics.
Health Monitoring Diagnostics
Health monitoring diagnostics provide information about the health of the switch. They detect runtime hardware
errors, memory errors, software faults, and resource exhaustion.
Health monitoring diagnostics are nondisruptive and run in the background to ensure the health of a switch
that is processing live network traffic.
The following table describes the health monitoring diagnostics for the switch.
Table 23: Health Monitoring Diagnostics Tests
DescriptionDiagnostic
Monitors port and system status LEDs.LED
Monitors the power supply health state.Power Supply
Monitors temperature sensor readings.Temperature Sensor
Monitors the fan speed and fan control.Test Fan
The following table describes the health monitoring diagnostics that also run during system boot or system
reset.
Table 24: Health Monitoring and Bootup Diagnostics Tests
DescriptionDiagnostic
Verifies the integrity of backplane and supervisor SPROMs.SPROM
Tests the switch fabric ASICs.Fabric engine
Tests the ports on the switch fabric ASIC.Fabric port
Tests the forwarding engine ASICs.Forwarding engine
Tests the ports on the forwarding engine ASICs.Forwarding engine port
Tests the components (such as PHY and MAC) on the front ports.Front port
Expansion Module Diagnostics
During the switch bootup or reset, the bootup diagnostics include tests for the in-service expansion modules
in the switch.
Cisco Nexus 3548 Switch NX-OS System Management Configuration Guide, Release 7.x
116
Configuring Online Diagnostics
Health Monitoring Diagnostics
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