Cisco Systems 2940 manual Connecting to 10/100 Ports and the 10/100/1000 Port

Page 44

Chapter 2

Installation

Connecting to 10/100 Ports and the 10/100/1000 Port

Connecting to 10/100 Ports and the 10/100/1000 Port

The 10/100 ports configure themselves to operate at the speed and duplex settings of attached devices.They operate at 10 or 100 Mbps in half- or full-duplex mode. If the attached devices do not support autonegotiation, you can explicitly set the speed and duplex parameters.

The 10/100/1000 port on the 2940-8TT-S operates at the speed setting of the attached device. This port operates in half- or full-duplex mode at 10 or 100 Mbps or in full-duplex mode only at 1000 Mbps. If the attached device does not support autonegotiation, you can set the speed.

Connecting a device that does not autonegotiate or a device with manually set speed and duplex parameters can reduce performance or result in link failures between the devices. To maximize performance, choose one of these methods for configuring the ports:

•Let the port autonegotiate both speed and duplex for 10/100 ports and only speed for 10/100/1000 ports.

•Set the speed and duplex parameters on both ends of the connection.

Caution To comply with the intrabuilding lightning surge requirements, intrabuilding wiring must be shielded, and the shield for the wiring must be grounded at both ends.

Follow these steps to connect the switch to 10BASE-T, 100BASE-TX, or 1000BASE-T devices:

Step 1 To prevent electrostatic-discharge (ESD) damage, follow your normal board and component handling procedures.

When connecting to servers, workstations, and routers, insert a twisted-pair straight-through cable in a front-panel RJ-45 connector, as shown in Figure 2-9. When connecting to switches or repeaters, insert a twisted-pair crossover cable. See the “Cable and Adapter Specifications” section on page B-5for cable-pinout descriptions.

Note When connecting to 1000BASE-T devices, be sure to use a four twisted-pair, Category 5 cable.

Figure 2-9 Connecting to a 10/100 Port

SYST STAT DPLX SPD

1x	2x
	2x	3x
		3x	4x
			4x	5x
				5x
				89474

Catalyst 2940 Switch Hardware Installation Guide

2-14	OL-6157-01

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Contents Catalyst 2940 Switch Hardware Installation Guide Corporate HeadquartersCatalyst 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 Bewaar Deze Instructies Warnung Wichtige SicherheitshinweiseAvvertenza Importanti Istruzioni Sulla Sicurezza Aviso Instruções Importantes DE SegurançaOL-6157-01 GEM Disse Anvisninger Xii Related Publications Obtaining Documentation Cisco.comDocumentation CD-ROM Ordering DocumentationCisco TAC Website Opening a TAC Case Obtaining Technical AssistanceDocumentation Feedback Obtaining Additional Publications and Information TAC Case Priority DefinitionsXvii Xviii Setting up the Switch FeaturesFront-Panel Description 10/100 Ethernet ports 100BASE-FX port SFP module slotPort Numbering 10/100 Ports10/100/1000 Port Port or Slot type Catalyst 2940-8TT-S Catalyst 2940-8TF-SType Cisco Part Number 100BASE-FX PortSFP Module Slot 62.5/125 micron 50/125 micron Micron Single-mode SFP ModulesMicron Cable Guard LEDsMode LED Port Mode Description Color System StatusPort Mode Color Meaning Power Connector Rear-Panel DescriptionConsole Port Security SlotsManagement Options OL-6157-01 Installation Preparing for InstallationChapter Installation Guidelines Verifying Package ContentsVerifying 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 Installing the Switch Under a Desk Mounting the Switch on Top of a DeskInstalling the Mounting Screws Under a Desk Installing the Switch on a Wall Mounting the Switch Under a DeskThis Side Switch Screw Slides on this way Connecting to an SFP Module Installing the Switch Magnet MountConnecting to an SFP Module Port Connecting to 10/100 Ports and the 10/100/1000 Port Connecting to a 10/100 PortConnecting to the 100BASE-FX Port 10 Connecting to a 100BASE-FX Port11 Connecting to an SFP Module Port Where to Go Next Chapter Diagnosing Common Problems Understanding Post ResultsSymptom Possible Cause Resolution B-5 throughNo 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 Connectors and Cables Connector SpecificationsFigure B-2 10/100 RJ-45 Pinouts Connecting to 10BASE-T and 100BASE-TX Devices 10/100/1000 PortsFigure B-4 MT-RJ Connector Cable and Adapter Specifications Two Twisted-Pair Cable PinoutsFour Twisted-Pair Cable Pinouts for 10/100 Ports TD+Four Twisted-Pair Cable Pinouts for 1000BASE-T Ports TPOConnecting to a PC Cable and Adapter PinoutsIdentifying a Rollover Cable OL-6157-01 Configuring the Switch with the CLI-Based Setup Program Methods for Accessing the CLIAccessing the CLI Through the Console Port Taking Out What You NeedConnecting to a Power Source Connecting to the Console PortFigure C-3 Connecting a Switch to a PC Starting the Terminal Emulation SoftwareEntering the Initial Configuration Information IP SettingsCompleting the Setup Program These choices appear CLI Numerics IN-2 IN-3 IN-4 IN-5 IN-6

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