Connectors and Cables | Cisco Systems OL-6157-01 guide

A P P E N D I X B

Connectors and Cables

This appendix describes the connectors, cables, and adapters that you use to connect the switch to other devices.

Connector Specifications

These sections describe the connectors used with the Catalyst 2940 switches and contains this information:

•10/100 Ports, page B-1

•10/100/1000 Ports, page B-3

•100BASE-FX Port, page B-4

•SFP Module Slot, page B-4

•Console Port, page B-5

10/100 Ports

The 10/100 Ethernet ports use standard RJ-45 connectors and Ethernet pinouts with internal crossovers, as shown by an X in the port label on the switch, as shown in Figure B-1.

Figure B-1 Port Labels Showing Internal Crossovers

1x

2x

3x

4x

5x

10Base-T / 100Base-TX

89869

These ports have the transmit (TD) and receive (RD) signals internally crossed so that a twisted-pair straight-through cable and adapter can be attached to the port. Figure B-2shows the pinout.

Catalyst 2940 Switch Hardware Installation Guide

	OL-6157-01	B-1

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Cisco Systems OL-6157-01 manual Connectors and Cables, Connector Specifications

Contents

Corporate Headquarters Catalyst 2940 Switch Hardware Installation Guide Catalyst 2940 Switch Hardware Installation Guide N T E N T S Installation Accessing the CLI Through the Console Port D-2 Contents Catalyst 2940 Hardware Installation Guide Conventions AudiencePurpose Warnung Wichtige Sicherheitshinweise Bewaar Deze Instructies Aviso Instruções Importantes DE Segurança Avvertenza Importanti Istruzioni Sulla Sicurezza OL-6157-01 GEM Disse Anvisninger Xii Related Publications Ordering Documentation Obtaining DocumentationCisco.com Documentation CD-ROM Cisco TAC Website Opening a TAC Case Obtaining Technical AssistanceDocumentation Feedback TAC Case Priority Definitions Obtaining Additional Publications and Information Xvii Xviii Features Setting up the Switch 10/100 Ethernet ports 100BASE-FX port SFP module slot Front-Panel Description Port or Slot type Catalyst 2940-8TT-S Catalyst 2940-8TF-S Port Numbering10/100 Ports 10/100/1000 Port Type Cisco Part Number 100BASE-FX PortSFP Module Slot 62.5/125 micron 50/125 micron Micron Single-mode SFP ModulesMicron LEDs Cable Guard Color System Status Mode LED Port Mode Description Port Mode Color Meaning Rear-Panel Description Power Connector Security Slots Console Port Management Options OL-6157-01 Preparing for Installation Installation Chapter Verifying Package Contents Installation Guidelines Verifying Switch Operation Installing the Switch on a Desk With Mounting Screws Installing the SwitchInstalling the Switch on a Desk Without Mounting Screws Installing the Mounting Screws on Top of a Desk Mounting the Switch on Top of a Desk Installing the Switch Under a Desk Installing the Mounting Screws Under a Desk Mounting the Switch Under a Desk Installing the Switch on a Wall This Side Switch Screw Slides on this way Installing the Switch Magnet Mount Connecting to an SFP Module Connecting to an SFP Module Port Connecting to a 10/100 Port Connecting to 10/100 Ports and the 10/100/1000 Port 10 Connecting to a 100BASE-FX Port Connecting to the 100BASE-FX Port 11 Connecting to an SFP Module Port Where to Go Next Chapter Understanding Post Results Diagnosing Common Problems B-5 through Symptom Possible Cause Resolution No connectivity to SFP Poor performance or excessive System LED is amber OL-6157-01 Environmental Ranges Power RequirementsPhysical Dimensions SFP module Fiber-Port Power Levels 100BASE-FX port Slot1Safety Table A-3 Catalyst 2940 Switch Agency Approvals OL-6157-01 Connector Specifications Connectors and Cables Figure B-2 10/100 RJ-45 Pinouts 10/100/1000 Ports Connecting to 10BASE-T and 100BASE-TX Devices Figure B-4 MT-RJ Connector Two Twisted-Pair Cable Pinouts Cable and Adapter Specifications TD+ Four Twisted-Pair Cable Pinouts for 10/100 Ports TPO Four Twisted-Pair Cable Pinouts for 1000BASE-T Ports Cable and Adapter Pinouts Connecting to a PC Identifying a Rollover Cable OL-6157-01 Methods for Accessing the CLI Configuring the Switch with the CLI-Based Setup Program Taking Out What You Need Accessing the CLI Through the Console Port Connecting to the Console Port Connecting to a Power Source Starting the Terminal Emulation Software Figure C-3 Connecting a Switch to a PC IP Settings Entering the Initial Configuration Information Completing the Setup Program These choices appear CLI Numerics IN-2 IN-3 IN-4 IN-5 IN-6