Cisco Systems 2940 appendix Cable Guard, LEDs, Stat LED, Dplx LED Syst LED SPD LED

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Chapter 1 Overview

Front-Panel Description

The Cisco CWDM SFPs operate on single-mode fiber. The SFPs support both Gigabit Ethernet as well as fiber channel (1 Gigabit and 2 Gigabit) links. For more information about Cisco CWDM SFPs, see the Cisco CWDM SFP Transceiver Compatibility Matrix at this URL:

http://www.cisco.com/en/US/products/hw/modules/ps4999/products_device_support_table09186a00803bf095.html

Also see your SFP module documentation and the Cisco Small Form-Factor Pluggable Modules Installation Notes (not orderable but is available on Cisco.com).

For the latest information about SFP modules supported by the switch, see the release notes.

Cable Guard

You can order an optional cable guard to secure cables to the front of the switch and prevent them from being accidentally removed. To order a cable guard, contact your Cisco representative.

LEDs

There are four LEDs on the left panel of the switch, and there are port status LEDs above all the switch ports, as shown in Figure 1-3.

Figure 1-3 LEDs on Catalyst 2940 Switches

1

 

3

SYST

 

 

 

 

 

 

4

 

STAT

 

1x

2x

 

 

 

 

5

DPLX

 

 

3x

 

 

 

 

 

 

4x

 

 

 

 

 

 

5x

6

 

SPD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MODE

 

 

 

 

 

 

 

 

2

 

 

 

 

 

 

1

Port status LED

4

 

STAT LED

 

 

 

2

Mode button

5

 

DPLX LED

 

 

 

3

SYST LED

6

 

SPD LED

 

 

 

You can use these LEDs to monitor switch activity and performance:

89453

The system (SYST) continually displays the system status. The SYST LED color shows the switch status.

The status (STAT), duplex (DPLX), and speed (SPD) LEDs show the information that is being displayed by the port status LEDs. Pressing the Mode button cycles the LEDs through the STAT, DPLX, and SPD displays.

Catalyst 2940 Switch Hardware Installation Guide

1-6

OL-6157-01

 

 

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Contents Setting up the Switch FeaturesFront-Panel Description 10/100 Ethernet ports 100BASE-FX port SFP module slot10/100/1000 Port Port Numbering10/100 Ports Port or Slot type Catalyst 2940-8TT-S Catalyst 2940-8TF-S100BASE-FX Port SFP Module SlotType Cisco Part Number 62.5/125 micron 50/125 micron Micron Single-mode SFP ModulesMicron CWDM3Stat LED Cable GuardLEDs Dplx LED Syst LED SPD LEDStat Mode LED Port Mode DescriptionColor System Status DplxPort Mode Color Meaning Power Connector Rear-Panel DescriptionConsole Port Security SlotsManagement Options OL-6157-01
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