Cisco N9396Y12C-SE1 NX-OS Mode Switch Hardware Installation Guide

Switch chassis LEDs

Updated: January 22, 2026

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Overview

LEDs on the switch chassis and their status.

The BCN, STS, and ENV LEDs are located on the left side of the front of the switch. The port LEDs appear as triangles pointing up or down to the nearest port.


LED	Color	Status
BCN	Flashing blue	The operator has activated this LED to identify this switch in the chassis.
BCN	Off	This switch is not being identified.
STS	Green	The switch is operational.
	Flashing amber	The switch is booting up.
	Amber	Temperature exceeds the minor alarm threshold.
	Red	Temperature exceeds the major alarm threshold.
	Off	The switch is not receiving power.
ENV	Green	Fans and power supply modules are operational.
	Amber	At least one fan or power supply module is not operating.
	Off	No alarm
(port)	Green	Port admin state is 'Enabled', SFP is present and the interface is connected (that is, cabled, and the link is up).
	Amber	Port admin state is 'Disabled, or the SFP is absent, or both.
	Off	Port admin state is 'Enabled' and SFP is present, but interface is not connected.

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