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

 

 

 

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Cisco Systems 2940 appendix Color System Status, Mode LED Port Mode Description, Dplx, Spd