Cisco Systems OL-6157-01 Syst Led, STAT, DPLX, SPD, and Port LEDs, Color, System Status, Mode LED

Chapter 1 Overview

Front-Panel Description

All of the LEDs described in this section are visible through the GUI management applications—the Network Assistant application for multiple switches and the device manager for a single switch. The switch software configuration guide describes how to use the CLI to configure and to monitor individual switches and switch clusters.

SYST LED

The SYST LED shows whether the system is receiving power and functioning properly. Table 1-4lists the LED colors and meanings.

Table 1-4 System LED

Color	System Status
Off	System is not powered on.
Green	System is operating normally.
Amber	System is receiving power but is not functioning properly.

For information about the system LED colors during the power-on self-test (POST), see the “Understanding POST Results” section on page 3-1.

STAT, DPLX, SPD, and Port LEDs

Press the Mode button to cycle through the STAT, DPLX, and SPD LED displays. When the LED is highlighted for the mode that you want, release the button to enable that highlighted mode.

Table 1-5lists the mode meanings.

Table 1-5 Port Mode LEDs

Mode LED	Port Mode	Description
STAT	Port status	Port status. This is the default mode.
DPLX	Port duplex mode	Port duplex mode: half duplex or full duplex.
SPD	Port speed	Port operating speed: 10 or 100 Mbps for 10/100 ports and
		10, 100, or 1000 Mbps for 10/100/1000 ports.

Each port has a port status LED, also called a port LED. These LEDs display information about the individual ports. When you change the port mode, the meanings of the port LED colors change. Table 1-6explains how to interpret these colors.

Catalyst 2940 Switch Hardware Installation Guide

OL-6157-01 1-7