Cisco Systems WSC3750X24TS guide

Chapter 3 Troubleshooting

Finding the Switch Serial Number

Figure 3-8 Catalyst 3750G-24WS Switch Serial Number Location

STACK A

STACK B

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Figure 3-9 Catalyst 3750-48PS Switch Serial Number Location

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Figure 3-10 Catalyst 3750G-48PS and 3750G-48TS Switches Serial Number Location

Catalyst 3750 Switch Hardware Installation Guide

3-10	OL-6336-07

Image 94

Cisco Systems WSC3750X24TS specifications Catalyst 3750G-24WS Switch Serial Number Location

Contents

Catalyst 3750 Switch Hardware Installation Guide Page N T E N T S Rear Panel Overview Troubleshooting SFP Module Ports Purpose AudienceOrganization Conventions Device manager online help available on the switch Related Publications Catalyst 3750 Switch Hardware Installation Guide Features Product Overview Product Overview Features Front Panel Description Fast Ethernet Front Panel SwitchesCatalyst 3750-24FS Switch Front Panel Description 10/100 ports SFP module slots Catalyst 3750-24TS Switch Front Panel Description Catalyst 3750-48TS Switch Front Panel Description 10/100 PoE ports 2 SFP module slots Catalyst 3750-24PS Switch Front Panel DescriptionCatalyst 3750-48PS Switch Front Panel Description 10/100 PoE ports SFP module slots Gigabit Ethernet Switch Front Panel Descriptions Catalyst 3750G-12S and Catalyst 3750G-12S-SD Front Panel 10/100/1000 ports 10/100/1000 ports 2 SFP module slots 10/100/1000 ports SFP module slots Catalyst 3750G-48TS Switch Front Panel DescriptionCatalyst 3750G-24PS Switch Front Panel Description 10/100/1000 PoE ports 2 SFP module slots Catalyst 3750G-16TD Switch Front Panel Description Catalyst 3750G-48PS Switch Front Panel Description10/100/1000 ports Xenpak module slot 10/100 and 10/100/1000 Ports 10/100/1000 PoE ports SFP module slots Product Overview 10/100 and 10/100/1000 Ports 100BASE-FX Ports SFP Module Slots LEDs Xenpak Module Slot Catalyst 3750G-16TD SwitchSFP Modules Mode button Master LED Stack LED Speed LED System LED Duplex LED Port LED Status LED Duplex LED System LED Mode button Status LED Stack LED Master LED Speed LEDMode button Status LED PoE LED Master LED Stack LED Speed LED System LED Duplex LED 18 Catalyst 3750G-24WS-S25 and 3750G-24WS-S50 Switch LEDs System LED Color System Status Port LEDs and Modes Port status Port status. This is the default modeMaster LED Port speed Port operating speed 10, 100, or 1000 Mb/s Port Mode Port LED Color Meaning Stack LED Stack LED Rear Panel Description Rear Panel Overview 21 Catalyst 3750G-24TS Switch Rear Panel 23 Catalyst 3750-24FS Switch Rear Panel Power Connectors StackWise Ports DC Power Connector Internal Power Supply ConnectorCisco RPS Connector Management Options Console Port Network Configurations Snmp network management Preparing for Installation This section covers these topics Switch Installation Preparing for Installation Switch Installation Preparing for Installation Catalyst 3750G Integrated Wireless LAN Controller Switches Installation Guidelines Verifying Package Contents Verifying Switch Operation If you plan to stack your switches, read these sections Powering On the Switch and Running PostPowering Off the Switch Planning the Stack Planning Considerations Powering ConsiderationsCabling Considerations Example of a Stack with Full Bandwidth Connections Recommended Cabling Configurations Stacking Switches in Vertical Racks or on a Table This section describes these installation procedures Installing the SwitchRack-Mounting Removing Screws from the Switch 12shows how to remove the chassis screws in a 1.5-RU switch 12 Removing Screws from the 3750G-24TS Switch Attaching Brackets to the Catalyst 3750G-24TS Switch Phillips flat-head screws 15 Attaching Brackets for 24-Inch Racks, Front Panel Forward 17 Attaching Brackets for 24-Inch Racks, Rear Panel Forward 20 Attaching Brackets for 19-Inch Racks, Front Panel Forward Attaching Brackets to All Other Catalyst 3750 Switches 22 Attaching Brackets for 19-Inch Telco Racks Attaching Brackets for 19-Inch Racks and 19-Inch Telco Racks Phillips truss-head screws 24 Attaching Brackets for 19-Inch Racks, Front Panel Forward Attaching Brackets for 23-Inch Racks Attaching Brackets for 24-Inch Racks and 24-Inch Telco Racks Attaching Brackets for Etsi Racks Mounting the Switch in a Rack Phillips machine screws 141734 Attaching the Cable Guide Cable guide screws Wall-Mounting Attaching the RPS Connector Cover Attaching the Brackets to the Switch for Wall-MountingPhillips pan-head screws RPS connector RPS connector cover Mounting the Switch on a Wall 43 Mounting the Switch on a Wall Connecting StackWise Cable to StackWise Ports Table- or Shelf-Mounting Stack 1 Stack Stack Installing and Removing SFP Modules Installing SFP Modules into SFP Module Slots 48 Installing an SFP Module into an SFP Module Slot Removing SFP Modules from SFP Module Slots Switch Installation Installing a Xenpak Module 50shows a Xenpak module 51 Removing the Xenpak Module Slot Cover Optical bore dust plug 2 Captive installation screw Removing a Xenpak Module Connecting to the 10/100 and 10/100/1000 Ports Phillips-head screw Module slot cover Device Crossover Cable Connecting to an SFP Module Connecting to a Fiber-Optic SFP Module 56 Connecting to an SFP Module Port Connecting to 1000BASE-T SFP Modules 57 Connecting to an SFP Module Port Connecting to a Xenpak Module Where to Go Next 58 Connecting to a Xenpak Module Port OL-6336-07 Diagnosing Problems This section includes these troubleshooting topics Verify Switch Connections Verify Switch Post ResultsMonitor Switch LEDs Bad or Damaged Cable Link Status Transceiver Module Port IssuesPoE Connections Ping the End Device Port and Interface SettingsSpanning Tree Loops Autonegotiation and NIC Cards Monitor Switch PerformanceSpeed, Duplex, and Autonegotiation Cabling Distance Clearing the Switch IP Address and Configuration Replacing a Failed Stack Member Finding the Switch Serial Number Catalyst 3750G-16TD Switch Serial Number Location Catalyst 3750G-16TD Switch Serial Number Location Catalyst 3750G-24TS Switch Serial Number Location Catalyst 3750G-24WS Switch Serial Number Location 11 Catalyst 3750-48TS Switch Serial Number Location OL-6336-07 Technical Specifications Environmental Ranges Table A-3 Specifications for the Catalyst 3750-24FS Switch Table A-4 Specifications for the Catalyst 3750-24TS Switch Table A-5 Specifications for the Catalyst 3750G-24T Switch Per port maximum, 370 W switch maximum Range from 4 to 15.4 W per port, up to 370 W switch maximum Table A-8 Specifications for the Catalyst 3750-48PS Switch Table A-9 Specifications for the Catalyst 3750G-48PS Switch Table A-10 Specifications for the Catalyst 3750G-16TD Switch Table A-11 Specifications for the Catalyst 3750G-24TS Switch Environmental Ranges Table A-13 Specifications for the Catalyst 3750-48TS Switch Power over Ethernet Connector and Cable Specifications Connector Specifications 10/100 and 10/100 /1000 Ports Figure B-1 10/100 Port Pinouts Meter, MT-RJ-to-SC multimode cable SFP Module PortsMeter, MT-RJ-to-ST multimode cable Xenpak Module Ports Catalyst 3750G-16TD Switch Cable and Adapter Specifications SFP Module Cable Specifications Two Twisted-Pair Cable Pinouts Four Twisted-Pair Cable Pinouts for 10/100 Ports TP3 Identifying a Crossover Cable Figure B-11 Identifying a Crossover Cable Four Twisted-Pair Cable Pinouts for 1000BASE-T Ports Crossover Cable and Adapter Pinouts TxD RxD RxD TxD Connecting to DC Power Connecting to DC Power Preparing for Installation Grounding the Switch Torque to 15 lbf-in Figure C-2 Crimping the Ground Lug Wiring the DC-Input Power Source Figure C-4 Terminal Block Plug Figure C-6 Stripping the DC-Input Power Source Wire Figure C-7 Inserting Wires in the Terminal Block Plug Figure C-8 Torquing the Terminal-Block Captive Screws Tie wrap Terminal block Configuring the Switch with the CLI-Based Setup Program Accessing the CLI Through Express Setup Accessing the CLIAccessing the CLI Through the Console Port Taking Out What You Need Stacking the Switches Optional Stack 1 Stack Connecting to the Console Port Figure D-4 Connecting a Switch to a PC Connecting to a Power Source Starting the Terminal Emulation Software IP Settings Entering the Initial Configuration InformationCompleting the Setup Program Enter an enable password, and press Return These choices are displayed OL-6336-07 Numerics Considerations Pinouts B-7 Connectors and cables Console port Connecting to the console port D-5Connection procedures RPS Specifications DC power caution Document conventions Interpreting Master PoE Port High-powered devices Shock hazard warning Power connection warning LEDs Results Running at power on Running at powerupPower Connecting to Connectors RJ-45 connector, console port RJ-45 console port Xenpak module rubber plugs warning Xenpak modules caution