Cisco Systems Understanding Cisco Switch System Status: Amber and Blinking Lights on 3750-X and 3560-X

Chapter 1 Product Overview

Front Panel Description

2.Only Catalyst 3750-X switches.

3.Only switches with PoE+ ports.

System LED

Table 1-6	System LED
Color		System Status
Off		System is not powered on.
Green		System is operating normally.
Blinking Green		Switch is running power on self-test (POST).
Blinking Amber		There is a fault with one of the following:
		• Network module (non-traffic-related)
		•	Power supply
		•	Fan module
Amber		System is receiving power but is not functioning properly.

For information on the System LED colors during power-on self-test (POST), see the “Diagnosing Problems” section on page 4-1.

XPS LED

Table 1-7	XPS LED
Color		XPS Status
Off		XPS cable is not installed.
		Switch is in StackPower mode (Catalyst 3750-X).
Green		XPS is connected and ready to provide back-up power.
Blinking green		XPS is connected but is unavailable because it is providing power to another device
		(redundancy has been allocated to a neighboring device).
Amber		The XPS is in standby mode or in a fault condition. See the XPS-2200
		documentation for information about the standby mode and fault conditions.
Blinking amber		The power supply in a switch has failed, and the XPS is providing power to that
		switch (redundancy has been allocated to this device).

Port LEDs and Modes

Each Ethernet port and 10-Gigabit Ethernet module slot has a port LED. These port LEDs, as a group or individually, display information about the switch and about the individual ports. The port mode determines the type of information shown by the port LEDs. Table 1-8lists the mode LEDs and their associated port modes and meanings.

To select or change a mode, press the Mode button until the desired mode is highlighted. When you change port modes, the meanings of the port LED colors also change. Table 1-9explains how to interpret the port LED colors in different port modes.

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

OL-19593-01 1-9