Crossover Cable and Adapter Pinouts | Cisco Systems WSC3750X24TS

Appendix B Connector and Cable Specifications

Cable and Adapter Specifications

Four Twisted-Pair Cable Pinouts for 1000BASE-T Ports

Figure B-12and Figure B-13show the schematics of four twisted-pair cables for 10/100/1000 ports on Catalyst 3750 switches.

Figure B-12

Switch

1TPO+

2TPO-

3TP1+

6TP1-

4TP2+

5TP2-

7TP3+

8TP3-

Figure B-13

Switch

1TPO+

2TPO-

3TP1+

6TP1-

4TP2+

5TP2-

7TP3+

8TP3-

Four Twisted-Pair Straight-Through Cable Schematic for 10/100/1000 Ports

Router or PC

1 TP1+

2 TP1-

3 TPO+

6 TPO-

	4	TP3+
	5	TP3-
	7	TP2+	65272
	8	TP2-	65272
	8	TP2-

Four Twisted-Pair Crossover Cable Schematics for 10/100/1000 and 1000BASE-T SFP Module Ports

		Switch
	1	TP0+
	2	TP0-
	3	TP1+
	6	TP1-
	4	TP2+
	5	TP2-
	7	TP3+	65274
	8	TP3-	65274
	8	TP3-

Crossover Cable and Adapter Pinouts

This section describes the adapter pinouts.

Table B-4lists the pinouts for the console port, the RJ-45-to-DB-9 adapter cable, and the console device.

Table B-4 Console Port Signaling Using a DB-9 Adapter

		Switch Console	RJ-45-to-DB-9	Console
		Port (DTE)	Terminal Adapter	Device

		Signal	DB-9 Pin	Signal

		RTS	8	CTS

		DTR	6	DSR
					Catalyst 3750 Switch Hardware Installation Guide


	OL-6336-07						B-9
	OL-6336-07						B-9

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Cisco Systems WSC3750X24TS Four Twisted-Pair Cable Pinouts for 1000BASE-T Ports, Crossover Cable and Adapter Pinouts

Contents

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