Catalyst 3750 Switch Hardware Installation Guide
Page
 N T E N T S
 Rear Panel Overview
 Troubleshooting
 SFP Module Ports
 Purpose
Audience
Organization
 Conventions
 Device manager online help available on the switch
Related Publications
 Catalyst 3750 Switch Hardware Installation Guide
 Features
Product Overview
 Product Overview Features
 Fast Ethernet Front Panel Switches
Catalyst 3750-24FS Switch Front Panel Description
Front Panel Description
10/100 ports SFP module slots
 Catalyst 3750-24TS Switch Front Panel Description
Catalyst 3750-48TS Switch Front Panel Description
 Catalyst 3750-24PS Switch Front Panel Description
Catalyst 3750-48PS Switch Front Panel Description
10/100 PoE ports 2 SFP module slots
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
 Catalyst 3750G-48TS Switch Front Panel Description
Catalyst 3750G-24PS Switch Front Panel Description
10/100/1000 ports SFP module slots
10/100/1000 PoE ports 2 SFP module slots
 Catalyst 3750G-16TD Switch Front Panel Description
Catalyst 3750G-48PS Switch Front Panel Description
10/100/1000 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 Switch
SFP Modules
 Mode button Master LED Stack LED
Speed LED System LED Duplex LED Port LED Status LED
 Mode button Status LED Stack LED Master LED Speed LED
Mode button Status LED PoE LED Master LED Stack LED
Duplex LED System LED
Speed LED System LED Duplex LED
 18 Catalyst 3750G-24WS-S25 and 3750G-24WS-S50 Switch LEDs
 System LED
Color System Status
 Port status Port status. This is the default mode
Master LED
Port LEDs and Modes
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 Connector
Cisco 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
 Powering On the Switch and Running Post
Powering Off the Switch
If you plan to stack your switches, read these sections
Planning the Stack
 Planning Considerations
Powering Considerations
Cabling 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 Switch
Rack-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-Mounting
Phillips 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 Post Results
Monitor Switch LEDs
Verify Switch Connections
Bad or Damaged Cable
 Link Status
Transceiver Module Port Issues
PoE Connections
 Ping the End Device
Port and Interface Settings
Spanning Tree Loops
 Monitor Switch Performance
Speed, Duplex, and Autonegotiation
Autonegotiation and NIC Cards
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 Ports
Meter, 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 CLI
Accessing 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 Information
Completing the Setup Program
 Enter an enable password, and press Return
 These choices are displayed
 OL-6336-07
 Numerics
Considerations Pinouts B-7
 Connecting to the console port D-5
Connection procedures
Connectors and cables Console port
RPS Specifications DC power caution
 Document conventions
Interpreting Master PoE Port
 High-powered devices
Shock hazard warning
 LEDs Results Running at power on Running at powerup
Power Connecting to Connectors
Power connection warning
RJ-45 connector, console port RJ-45 console port
 Xenpak module rubber plugs warning
Xenpak modules caution