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Cisco WS-C2950-24 Hardware Installation Manual

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See also: Configuration Manual , Installation Manual
Catalyst 2950 Desktop Switch
Hardware Installation Guide
December 2001
Corporate Headquarters
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-1706
USA
http://www.cisco.com
Tel:
408 526-4000
800 553-NETS (6387)
Fax:
408 526-4100
Customer Order Number: DOC-7811157=
Text Part Number: 78-11157-02

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Summary of Contents for Cisco WS-C2950-24

  • Page 1 Catalyst 2950 Desktop Switch Hardware Installation Guide December 2001 Corporate Headquarters Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA 95134-1706 http://www.cisco.com Tel: 408 526-4000 800 553-NETS (6387) Fax: 408 526-4100 Customer Order Number: DOC-7811157= Text Part Number: 78-11157-02...
  • Page 2 You can determine whether your equipment is causing interference by turning it off. If the interference stops, it was probably caused by the Cisco equipment or one of its peripheral devices. If the equipment causes interference to radio or television reception, try to correct the interference by using one or more of the following measures: •...
  • Page 3 ScriptShare, SMARTnet, TransPath, Voice LAN, Wavelength Router, and WebViewer are trademarks of Cisco Systems, Inc.; Changing the Way We Work, Live, Play, and Learn, and Discover All That’s Possible are service marks of Cisco Systems, Inc.; and Aironet, ASIST, BPX, Catalyst,...

  • Page 5: Table Of Contents

    Documentation Feedback xvii Obtaining Technical Assistance xviii Cisco.com xviii Technical Assistance Center xviii Cisco TAC Web Site Cisco TAC Escalation Center Overview C H A P T E R Features Front-Panel Description 10/100 Ports 100BASE-FX Ports 10/100/1000 Ports GBIC Module Ports...
  • Page 6 Port Mode and Port Status LEDs 1-13 Rear-Panel Description 1-20 Power Connectors 1-22 Internal Power Supply Connector 1-22 DC Power Connector 1-22 Cisco RPS Connector 1-23 Console Port 1-23 Management Options 1-23 Installation C H A P T E R Preparing for Installation Warnings EMC Regulatory Statements U.S.A.
  • Page 7 Contents Connecting to DC Power 2-20 Preparing for Installation 2-21 Grounding the Switch 2-21 Wiring the DC-Input Power Source 2-23 Running POST 2-29 Connecting to 10/100 and 10/100/1000 Ports 2-30 Connecting to 100BASE-FX Ports 2-33 Connecting to GBIC Module Ports 2-34 Connecting to 1000BASE-X GBIC Module Ports 2-34...
  • Page 8 Connecting to a PC Connecting to a Terminal B-10 Translated Safety Warnings A P P E N D I X Attaching the Cisco RPS (model PWR300-AC-RPS-N1) Lightning Activity Warning Power Supply Warning Installation Warning Circuit Breaker (15A) Warning Chassis Warning—Rack-Mounting and Servicing...
  • Page 9 Contents Laser Beam Exposure Warning C-29 48 VDC Power System C-30 Catalyst 2950G-24-EI-DC Use on LANs Only C-31 Catalyst 2950G-24-EI-DC Service Requirement C-33 Single SELV Source Warning C-34 Restricted Area Equipment Installation C-35 Ethernet Cable Shielding in Offices C-36 DC Power Disconnection Warning C-37 Exposed DC Power Wire Warning C-40...
  • Page 10 Contents Catalyst 2950 Desktop Switch Hardware Installation Guide 78-11157-02...

  • Page 11: Preface

    Preface Audience This guide is for the networking or computer technician responsible for installing a Catalyst 2950 switch. We assume that you are familiar with the concepts and terminology of Ethernet and local area networking. Purpose The Catalyst 2950 Desktop Switch Hardware Installation Guide describes the hardware features of Catalyst 2950 switches.

  • Page 12: Organization

    Preface Organization Organization This guide is organized into these chapters: Chapter 1, “Overview,” describes the switch ports, the standards that they support, and the LEDs. Chapter 2, “Installation,” contains the procedures for installing a switch on a rack, table, shelf, or desk. Chapter 3, “Troubleshooting,”...
  • Page 13 Preface Conventions Warning This warning symbol means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents. (To see translations of the warnings that appear in this publication, refer to the Appendix C, “Translated Safety Warnings.”)
  • Page 14 Preface Conventions Warnung Dieses Warnsymbol bedeutet Gefahr. Sie befinden sich in einer Situation, die zu einer Körperverletzung führen könnte. Bevor Sie mit der Arbeit an irgendeinem Gerät beginnen, seien Sie sich der mit elektrischen Stromkreisen verbundenen Gefahren und der Standardpraktiken zur Vermeidung von Unfällen bewußt. (Übersetzungen der in dieser Veröffentlichung enthaltenen Warnhinweise finden Sie im Anhang mit dem Titel C “Translated Safety Warnings”...

  • Page 15: Related Publications

    These documents provide complete information about the switch and are available from this Cisco.com site: http://www.cisco.com/univercd/cc/td/doc/product/lan/cat2950/index.htm You can order printed copies of documents with a DOC-xxxxxx= number from the Cisco.com sites and from the telephone numbers listed in the “Ordering Documentation” section on page xvii.

  • Page 16: Obtaining Documentation

    The following sections provide sources for obtaining documentation from Cisco Systems World Wide Web You can access the most current Cisco documentation on the World Wide Web at the following URL: http://www.cisco.com Translated documentation is available at the following URL: http://www.cisco.com/public/countries_languages.shtml...

  • Page 17: Ordering Documentation

    If you are reading Cisco product documentation on Cisco.com, you can submit technical comments electronically. Click Leave Feedback at the bottom of the Cisco Documentation home page. After you complete the form, print it out and fax it to Cisco at 408 527-0730.

  • Page 18: Obtaining Technical Assistance

    Technical Assistance Center The Cisco TAC is available to all customers who need technical assistance with a Cisco product, technology, or solution. Two types of support are available through the Cisco TAC: the Cisco TAC Web Site and the Cisco TAC Escalation Center.

  • Page 19: Cisco Tac Web Site

    If you cannot resolve your technical issues by using the Cisco TAC Web Site, and you are a Cisco.com registered user, you can open a case online by using the TAC Case Open tool at the following URL: http://www.cisco.com/tac/caseopen If you have Internet access, it is recommended that you open P3 and P4 cases through the Cisco TAC Web Site.

  • Page 20: Cisco Tac Escalation Center

    1 or priority level 2; these classifications are assigned when severe network degradation significantly impacts business operations. When you contact the TAC Escalation Center with a P1 or P2 problem, a Cisco TAC engineer will automatically open a case.

  • Page 21: Overview

    C H A P T E R Overview This chapter provides information about these topics: Switch features • Front- and rear-panel descriptions • Management options • Features The Catalyst 2950 switches are stackable Ethernet switches to which you can connect workstations and other network devices, such as servers, routers, and other switches.
  • Page 22 Chapter 1 Overview Features Table 1-1 Catalyst 2950 Switch Features Feature Description Hardware • Catalyst 2950-12 switch—12 10/100 Ethernet ports Catalyst 2950-24 switch—24 10/100 Ethernet ports • • Catalyst 2950C-24 switch—24 10/100 Ethernet ports and 2 100BASE-FX ports • Catalyst 2950G-12-EI—12 10/100 Ethernet ports and 2 GBIC -based Gigabit Ethernet module slots •...

  • Page 23: Front-Panel Description

    Power redundancy • Connection for an optional Cisco RPS 300 Redundant Power System (RPS) that uses AC input and supplies DC output to the switch 1.
  • Page 24 Chapter 1 Overview Front-Panel Description Figure 1-2 Catalyst 2950-24 Switch SYS T STA T UTI L DU PLX SPE ED 10 Ba se -T / 10 0B as MO DE 10 x e-T X 11 x 12 x 13 x 14 x 15 x 16 x...
  • Page 25 Chapter 1 Overview Front-Panel Description Figure 1-5 Catalyst 2950G-24-EI Switch SYS T STA T UTI L DU PLX SPE ED MO DE Ca ta ly st 29 SER IES 10/100 ports GBIC module slots Figure 1-6 Catalyst 2950G-24-EI-DC Switch SYS T STA T UTI L DU PLX...

  • Page 26: 10/100 Ports

    Chapter 1 Overview Front-Panel Description Figure 1-8 Catalyst 2950T-24 Switch SYS T STA T UTI L DU PLX SPE ED 10 Ba se -T / 10 0B as MO DE 10 x e-T X 11 x 12 x 13 x 14 x 15 x 16 x...

  • Page 27: 100Base-Fx Ports

    You can connect a 100BASE-FX port to an SC or ST port on a target device by using one of the MT-RJ fiber-optic patch cables listed in Table 1-2. Use the Cisco part numbers in Table 1-2 to order the patch cables that you need.

  • Page 28: 10/100/1000 Ports

    Chapter 1 Overview Front-Panel Description 10/100/1000 Ports The 10/100/1000 ports on Catalyst 2950T-24 switches use RJ-45 connectors and twisted-pair cabling. The ports can connect to these devices: • 10BASE-T-compatible devices, such as workstations and hubs, through standard RJ-45 connectors and two or four twisted-pair, Category 5 cabling. •...

  • Page 29: Gbic Module Ports

    The GigaStack GBIC supports one full-duplex link (in a point-to-point configuration) or up to nine half-duplex links (in a stack configuration) to other Gigabit Ethernet devices. Using the required Cisco proprietary signaling and cabling, the GigaStack GBIC-to-GigaStack GBIC connection cannot exceed 3 feet (1 meter).

  • Page 30: System Led

    Chapter 1 Overview Front-Panel Description Figure 1-9 LEDs on Catalyst 2950-12, 2950-24, 2950C-24, and 2950T-24 Switches Port status LEDs System S Y S T R P S Port mode S T A T LEDs U T IL D U P L X S P E E D M O D E Mode button...
  • Page 31 Chapter 1 Overview Front-Panel Description Figure 1-10 LEDs on Catalyst 2950G-12-EI, 2950G-24-EI, and 2950G-24-EI-DC Switches Port status LEDs System S Y S T R P S Port mode LEDs S T A T U T IL D U P L X S P E E D 1 1 X M O D E...
  • Page 32 Chapter 1 Overview Front-Panel Description Figure 1-11 LEDs on Catalyst 2950G-48-EI Switches Port status LEDs System S Y S T R P S S T A T U T IL D U P L X Port S P E E D mode 1 5 X LEDs...

  • Page 33: Rps Led

    Flashing amber The internal power supply in a switch has failed, and the RPS is providing power to the switch (redundancy has been allocated to this device). For more information about the Cisco RPS 300, refer to the Cisco RPS 300 Redundant Power System Hardware Installation Guide. Port Mode and Port Status LEDs Each port has a port status LED, also called a port LED.
  • Page 34 Chapter 1 Overview Front-Panel Description Table 1-5 Port Mode LEDs Mode LED Port Mode Description STAT Port status The port status. This is the default mode. UTIL Switch utilization The current bandwidth in use by the switch. DUPLX Port duplex mode The port duplex mode: half duplex or full duplex.
  • Page 35 Chapter 1 Overview Front-Panel Description Figure 1-13 Changing the Port Mode on Catalyst 2950G-12-EI, 2950G-24-EI, and 2950G-24-EI-DC Switches S Y S T R P S S T A T U T IL D U P L X S P E E D 1 1 X M O D E 1 2 X...
  • Page 36 Chapter 1 Overview Front-Panel Description Figure 1-14 Changing the Port Mode on Catalyst 2950G-48-EI Switches S Y S T R P S S T A T U T IL D U P L X S P E E D 1 5 X M O D E Mode button 1 6 X...
  • Page 37 Chapter 1 Overview Front-Panel Description When you change the port mode, the meanings of the port LED colors change. Table 1-6 explains how to interpret these colors. Table 1-6 Meaning of Port LED Colors in Different Modes Port Mode Color Meaning STAT (port status) No link.
  • Page 38 Chapter 1 Overview Front-Panel Description Table 1-6 Meaning of Port LED Colors in Different Modes (continued) Port Mode Color Meaning SPEED (speed) 10/100 ports Port is operating at 10 Mbps. Green Port is operating at 100 Mbps. 10/100/1000 ports Port is operating at 10 Mbps. Green Port is operating at 100 Mbps.
  • Page 39 Chapter 1 Overview Front-Panel Description If all LEDs on Catalyst 2950G-48-EI switches are green (no amber showing), the switch is using 50 percent or more of the total bandwidth. If the LED for the upper GBIC module slot is off, the switch is using more than 25 but less than 50 percent of the total bandwidth.

  • Page 40: Rear-Panel Description

    Chapter 1 Overview Rear-Panel Description Figure 1-17 Bandwidth Utilization on Catalyst 2950G-24-EI and 2950G-24-EI-DC Switches Catalyst 2950 11 12 13 14 15 16 17 18 19 20 21 22 23 24 SYST STAT UTIL DUPLX SPEED < 25% + 25% – 49% + 50% + Figure 1-18 Bandwidth Utilization on Catalyst 2950G-48-EI Switches Catalyst 2950...
  • Page 41 Chapter 1 Overview Rear-Panel Description Figure 1-19 Catalyst 2950 Switch Rear Panel R AT IN G D C IN PU 10 0- 12 7V T FO R R EM O TE PO W ER @ 1A SU PP LY SP EC IF 20 0- 24 0V IE D IN M AN UA L.

  • Page 42: Power Connectors

    Power Connectors You can provide power to a switch by using the AC internal power supply, the DC-input power source, or the Cisco RPS. Internal Power Supply Connector The internal AC power supply is an autoranging unit that supports input voltages between 100 and 240 VAC.

  • Page 43: Cisco Rps Connector

    Attach only the Cisco RPS 300 (model PWR300-AC-RPS-N1) to the RPS Warning receptacle. For more information about the Cisco RPS 300, refer to the Cisco RPS 300 Redundant Power System Hardware Installation Guide. Console Port You can connect a switch to a PC through the console port and the supplied rollover cable and DB-9 adapter.
  • Page 44 Chapter 1 Overview Management Options IOS command-line interface (CLI) • You can manage switches by using command-line entries. To access the CLI, connect a PC or terminal directly to the console port on the switch rear panel. If the switch is attached to your network, you can use a Telnet connection to manage the switch from a remote location.

  • Page 45: Installation

    C H A P T E R Installation This chapter describes how to install your Catalyst 2950 switch, interpret the power-on self-test (POST), and connect the switch to other devices. Read these topics and perform the procedures in this order: Pre-installation information and guidelines •...

  • Page 46: Preparing For Installation

    Chapter 2 Installation Preparing for Installation Preparing for Installation This section provides information about these topics: • Warnings EMC regulatory statements • • Installation guidelines Verifying package contents • Warnings These warnings are translated into several languages in Appendix C, “Translated Safety Warnings.”...
  • Page 47 Chapter 2 Installation Preparing for Installation The device is designed to work with TN power systems. Warning Warning When installing the unit, always make the ground connection first and disconnect it last. Warning This product relies on the building’s installation for short-circuit (overcurrent) protection.

  • Page 48: Emc Regulatory Statements

    Warning of lightning activity. Ultimate disposal of this product should be handled according to all national Warning laws and regulations. Attach only the Cisco RPS (model PWR300-AC-RPS-N1) to the RPS Warning receptacle. Class 1 laser product Warning Avoid exposure to the laser beam.

  • Page 49: Taiwan

    Chapter 2 Installation Preparing for Installation Taiwan This is a Class A Information product. When used in a residential environment, it may cause radio frequency interference. Under such circumstances, the user may be requested to take appropriate countermeasures. Japan This is a Class A product based on the standard of the Voluntary Control Council for Interference by Information Technology Equipment (VCCI).

  • Page 50: Korea

    Chapter 2 Installation Preparing for Installation Korea Warning This is a Class A Device and is registered for EMC requirements for industrial use. The seller or buyer should be aware of this. If this type was sold or purchased by mistake, it should be replaced with a residential-use type.

  • Page 51: Installation Guidelines

    Chapter 2 Installation Preparing for Installation Installation Guidelines When determining where to place the switch, observe these guidelines. (See Appendix A, “Technical Specifications.” for detailed specifications.) • For 10/100 ports and 10/100/1000 ports, the cable length from a switch to an attached device cannot exceed 328 feet (100 meters).

  • Page 52: Verifying Package Contents

    Note Carefully remove the contents from the shipping container, and check each item for damage. If any item is missing or damaged, contact your Cisco representative or reseller for support. Return all packing materials to the shipping container and save them.
  • Page 53 • One RJ-45-to-RJ-45 rollover cable One RJ-45-to-DB-9 female adapter • Cisco Information Packet, containing warranty, safety, and support • information If you want to connect a terminal to the switch console port, you need to provide an RJ-45-to-DB-25 female DTE adapter. You can order a kit (part number ACS-DSBUASYN=) with that adapter from Cisco.

  • Page 54: Installing The Switch In A Rack

    Chapter 2 Installation Installing the Switch in a Rack Installing the Switch in a Rack To prevent bodily injury when mounting or servicing this unit in a rack, you Warning must take special precautions to ensure that the system remains stable. The following guidelines are provided to ensure your safety: •...
  • Page 55 Chapter 2 Installation Installing the Switch in a Rack When mounting a Catalyst 2950G-48-EI switch in a 19-inch rack, use three • of the Phillips flat-head screws to attach the long side of the 19- or 24-inch bracket to the switch. See Figure 2-4, Figure...
  • Page 56 Chapter 2 Installation Installing the Switch in a Rack Figure 2-2 Attaching Brackets on the Switch in a 19-Inch Rack (Rear Panel Forward) C O N S O Number-8 Phillips flat-head screws Figure 2-3 Attaching Brackets on the Switch in a 19-Inch Telco Rack C O N S O Number-8 Phillips flat-head...
  • Page 57 Chapter 2 Installation Installing the Switch in a Rack Figure 2-4 Attaching Brackets on the Catalyst 2950G-48-EI Switch in a 19-Inch Rack (Front Panel Forward) S Y S T R P S S TA T U T IL D U P LX S P E E D 15 X M O D E...
  • Page 58 Chapter 2 Installation Installing the Switch in a Rack Figure 2-6 Attaching Brackets on the Catalyst 2950G-48-EI Switch in a 19-Inch Telco Rack C O N S O Number-8 Phillips flat-head screws Figure 2-7 Attaching Brackets on the Catalyst 2950G-24-EI-DC Switch in a 23-Inch Telco Rack (Front Panel Forward) S Y S T R P S...
  • Page 59 Chapter 2 Installation Installing the Switch in a Rack Figure 2-8 Attaching Brackets on the Catalyst 2950G-24-EI-DC Switch in a 23-Inch Telco Rack (Rear Panel Forward) C O N S O Number-8 Phillips truss-head screws Figure 2-9 Attaching Brackets on the Catalyst 2950G-24-EI-DC Switch in a 23-Inch Telco Rack C O N S O Number-8 Phillips...
  • Page 60 Chapter 2 Installation Installing the Switch in a Rack Figure 2-10 Attaching Brackets on the Switch in a 24-Inch Rack (Front Panel Forward) S Y S T R P S S TA T U T IL D U P LX S P E E D 11 X M O D E...

  • Page 61: Mounting The Switch In A Rack

    Chapter 2 Installation Installing the Switch in a Rack Figure 2-12 Attaching Brackets on the Switch in a 24-Inch Telco Rack C O N S O Number-8 Phillips truss-head screws Mounting the Switch in a Rack After attaching the brackets, use the four Phillips machine screws to securely attach the brackets to the rack.

  • Page 62: Attaching The Optional Cable Guide

    Chapter 2 Installation Installing the Switch in a Rack Figure 2-13 Mounting the Switch in a Rack SYS T STA T UTI L DUP LX SPE ED 10 Ba se -T / 10 0B as MO DE 10 x e-T X 11 x 12 x 13 x...

  • Page 63: Installing The Switch On A Table, Shelf, Or Desk

    Chapter 2 Installation Installing the Switch on a Table, Shelf, or Desk Figure 2-14 Attaching the Cable Guide SYS T STA T UTIL DUP LX SPE ED 10 Ba se- T / 10 0B MOD E 10 x ase -TX 11 x 12 x 13 x...

  • Page 64: Connecting To Dc Power

    Chapter 2 Installation Connecting to DC Power If you are using an RPS, refer to the Cisco RPS 300 Redundant Power System Hardware Installation Guide for installation instructions. Attach only the Cisco RPS 300 (model PWR300-AC-RPS-N1) to the RPS Warning receptacle.

  • Page 65: Preparing For Installation

    Chapter 2 Installation Connecting to DC Power Connect the equipment to a single, extra-low voltage (SELV) source. Warning Warning The equipment is to be installed in a restricted access area. Ethernet cables must be shielded when used in a central office environment. Warning Preparing for Installation Locate the DC terminal block plug, the ground lug, and the two number-10-32...
  • Page 66 Chapter 2 Installation Connecting to DC Power To ground the switch to earth ground, follow these steps. Make sure to follow any grounding requirements at your site. Locate the ground lug and the two number-10-32 screws. Step 1 If your ground wire is insulated, use a wire stripping tool to strip the 6-gauge Step 2 ground wire to 0.5 inch ±...

  • Page 67: Wiring The Dc-Input Power Source

    Chapter 2 Installation Connecting to DC Power Using a ratcheting torque screwdriver, torque each ground-lug screw to 15 lbf-in. Step 6 (240 ounce-force inches [ozf-in.]). Figure 2-17 Torquing Ground-Lug Screws 36 - 72 V D C IN PU 1 - 0. 5A T FO R R EM O TE PO W ER...
  • Page 68 Chapter 2 Installation Connecting to DC Power Before performing any of the following procedures, ensure that power is Warning removed from the DC circuit. To ensure that all power is OFF, locate the circuit breaker on the panel board that services the DC circuit, switch the circuit breaker to the OFF position, and tape the switch handle of the circuit breaker in the OFF position.
  • Page 69 Chapter 2 Installation Connecting to DC Power Identify the positive and negative feed positions for the terminal block Step 2 connection. The wiring sequence is positive to positive and negative to negative for both the A and the B feed wires. The switch rear panel identifies the positive and negative positions for both the A and B feed wires.
  • Page 70 Chapter 2 Installation Connecting to DC Power An exposed wire lead from a DC-input power source can conduct harmful Warning levels of electricity. Be sure that no exposed portion of the DC-input power source wire extends from the terminal block plug. Figure 2-21 Inserting Wires in the Terminal Block Plug Return Feed A...
  • Page 71 Chapter 2 Installation Connecting to DC Power Figure 2-22 Torquing the Terminal-Block Captive Screws Torque to 4.5 lbf-in. Catalyst 2950 Desktop Switch Hardware Installation Guide 2-27 78-11157-02...
  • Page 72 Chapter 2 Installation Connecting to DC Power Repeat Steps 4 and 5 for the remaining three DC-input power source wires. Step 6 Figure 2-23 shows the completed wiring of a terminal block plug. Figure 2-23 Completed Wiring of Terminal Block Plug Return Feed A Negative...

  • Page 73: Running Post

    If POST fails, the LED turns amber. See Chapter 3, “Troubleshooting,” determine a corrective action. Note POST failures are usually fatal. Call Cisco Systems immediately if your switch does not pass POST. Catalyst 2950 Desktop Switch Hardware Installation Guide 2-29...

  • Page 74: Connecting To 10/100 And 10/100/1000 Ports

    Chapter 2 Installation Connecting to 10/100 and 10/100/1000 Ports Connecting to 10/100 and 10/100/1000 Ports The 10/100 and 10/100/1000 ports configure themselves to operate at the speed and duplex settings of attached devices. If the attached devices do not support autonegotiation, you can explicitly set the speed and duplex parameters.
  • Page 75 Chapter 2 Installation Connecting to 10/100 and 10/100/1000 Ports Figure 2-25 Connecting to a Port on Catalyst 2950-12, 2950-24, 2950C-24, and 2950T-24 Switches S Y S T R P S S TA T U T IL D U P L X S P E E D M O D E Figure 2-26 Connecting to a Port on Catalyst 2950G-12-EI, 2950G-24-EI, and...
  • Page 76 Chapter 2 Installation Connecting to 10/100 and 10/100/1000 Ports Figure 2-27 Connecting to a Port on Catalyst 2950G-48-EI Switches S Y S T R P S S T A T U T IL D U P L X S P E E D 1 5 X M O D E 1 6 X...

  • Page 77: Connecting To 100Base-Fx Ports

    MT-RJ fiber-optic patch cables listed in Table 2-1. Use the Cisco part numbers in Table 2-1 to order the patch cables that you need. Follow these steps to connect the switch to a 100BASE-FX device:...

  • Page 78: Connecting To Gbic Module Ports

    Chapter 2 Installation Connecting to GBIC Module Ports Insert the other cable end in an SC or ST port on the target device. Step 3 Observe the port status LED. Step 4 The LED turns green when the switch and the target device have an established link.
  • Page 79 Chapter 2 Installation Connecting to GBIC Module Ports After installing the 1000BASE-X GBIC in the GBIC module slot, follow these steps: Remove the rubber plugs from the GBIC module port, and store them for future Step 1 use. Insert the SC connector in the fiber-optic receptacle (see Figure 2-29).

  • Page 80: Connecting To Gigastack Gbic Module Ports

    Chapter 2 Installation Connecting to GBIC Module Ports Connecting to GigaStack GBIC Module Ports After installing the GigaStack GBIC in the GBIC module slot, follow these steps: Insert the GigaStack cable connector in the GBIC (see Figure 2-30). Step 1 Figure 2-30 Connecting to a GigaStack Port C a ta ly s t 2 9 5 0...

  • Page 81: Connecting A Pc Or A Terminal To The Console Port

    RJ-45-to-DB-9 adapter. If you want to connect a terminal to the console port, you need to provide an RJ-45-to-DB-25 female DTE adapter. You can order a kit (part number ACS-DSBUASYN=) with that adapter from Cisco. For console-port and adapter-pinout information, see the“Cable and Adapter Specifications”...
  • Page 82 Chapter 2 Installation Connecting a PC or a Terminal to the Console Port Figure 2-31 Connecting to the Console Port R AT IN G D C IN PU 10 0- 12 7V T FO R R EM O TE PO W ER @ 1A SU PP LY SP EC IF...

  • Page 83: Where To Go Next

    Chapter 2 Installation Where to Go Next Figure 2-33 Connecting to a Console Port Only on Catalyst 2950G-48-EI Switches R AT IN G D C IN PU 10 0- 12 7V T FO R R PO W ER EM O TE @ 1A SU PP LY SP EC IF...
  • Page 84 Chapter 2 Installation Where to Go Next Catalyst 2950 Desktop Switch Hardware Installation Guide 2-40 78-11157-02...

  • Page 85: Troubleshooting

    C H A P T E R Troubleshooting The front-panel LEDs provide troubleshooting information about the switch. They show power-on self-test (POST) failures, port-connectivity problems, and overall switch performance. For a full description of the LEDs, see the “LEDs” section on page 1-9.

  • Page 86: Understanding Post Results

    When the switch begins POST, the system LED is off. If POST completes successfully, the LED turns green. If POST fails, the LED turns amber. POST failures are usually fatal. Call Cisco Systems if your switch does not Note pass POST.
  • Page 87 Chapter 3 Troubleshooting Diagnosing Problems Table 3-1 Common Problems and Solutions Symptom Possible Cause Resolution Poor performance or Duplex autonegotiation mismatch. Refer to the Catalyst 2950 excessive errors. Desktop Switch Software Configuration Guide for information about identifying autonegotiation mismatches. Cabling distance exceeded. •...
  • Page 88 Check if the fan has failed • • by using the show env fan privileged EXEC command. If the fan has failed, call Cisco Systems. • Nonfatal or fatal POST error • Use the show post detected. privileged EXEC command to see which POST test failed.

  • Page 89: Appendix

    A P P E N D I X Technical Specifications Table A-1, Table A-2, Table A-3, and Table A-4 list the technical specifications for the Catalyst 2950 switches. Table A-5 Table A-6 list the regulatory agency approvals. Table A-1 Technical Specifications for Catalyst 2950-12, 2950-24, 2950C-24, and 2950T-24 Switches Environmental Ranges Operating temperature...

  • Page 90: Technical Specifications

    Appendix A Technical Specifications Table A-1 Technical Specifications for Catalyst 2950-12, 2950-24, 2950C-24, and 2950T-24 Switches (continued) Physical Dimensions Weight 6.5 lb (3 kg) Dimensions 1.72 x 17.5 x 9.52 in. (H x W x D) (4.36 x 44.45 x 24.18 cm) Table A-2 Technical Specifications for Catalyst 2950G-12-EI, 2950G-24-EI, and 2950G-48-EI Switches...
  • Page 91 Appendix A Technical Specifications Table A-2 Technical Specifications for Catalyst 2950G-12-EI, 2950G-24-EI, and 2950G-48-EI Switches (continued) Catalyst 2950G-12-EI and Catalyst 2950G-48-EI 2950G-24-EI Switches Switch Physical Dimensions Weight 6.5 lb (3 kg) 10.5 lb (4.8 kg) Dimensions 1.72 x 17.5 x 9.52 in. 1.72 x 17.5 x 13 in.
  • Page 92 Appendix A Technical Specifications Table A-4 Fiber-Port Specifications for Catalyst 2950C-24 Switches Fiber-Port Power Levels Optical transmitter 1300 nm wavelength Optical receiver –14 dBm sensibility Optical transmitter –19 to –14 dBm power Transmit –19 to –14 dBm 1. nm = nanometers 2.

  • Page 93: Appendix

    A P P E N D I X 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 2950 switches. 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 name.

  • Page 94: 100Base-Fx Ports

    You can connect a 100BASE-FX port to an SC or ST port on a target device by using one of the MT-RJ fiber-optic patch cables listed in Table B-1. Use the Cisco part numbers in Table B-1 to order the patch cables that you need.

  • Page 95: 10/100/1000 Ports

    Connectors and Cables Connector Specifications Figure B-2 MT-RJ Connector Table B-1 MT-RJ Patch Cables for 100BASE-FX Connections Type Cisco Part Number 1-meter, MT-RJ-to-SC multimode cable CAB-MTRJ-SC-MM-1M 3-meter, MT-RJ-to-SC multimode cable CAB-MTRJ-SC-MM-3M 5-meter, MT-RJ-to-SC multimode cable CAB-MTRJ-SC-MM-5M 1-meter, MT-RJ-to-ST multimode cable...

  • Page 96: Connecting To 1000Base-T-Compatible Devices

    Appendix B Connectors and Cables Connector Specifications You can use Category 3, 4, or 5 cabling when connecting to 10BASE-T-compatible devices. You must use Category 5 cabling when connecting to 100BASE-TX-compatible devices. Connecting to 1000BASE-T-Compatible Devices When connecting the ports to 1000BASE-T-compatible devices, such as servers, workstations, and routers, you must use a four twisted-pair, Category 5, straight-through cable wired for 10BASE-T, 100BASE-TX, and 1000BASE-T.

  • Page 97: 1000Base-X Gbic Module Ports

    Appendix B Connectors and Cables Connector Specifications 1000BASE-X GBIC Module Ports 1000BASE-X Gigabit Interface Converter (GBIC) module ports use duplex SC connectors, as shown in Figure B-4. Figure B-4 1000BASE-X SC Connector GigaStack GBIC Module Ports The GigaStack GBIC module ports use proprietary connectors, as shown in Figure B-5.

  • Page 98: Cable And Adapter Specifications

    Appendix B Connectors and Cables Cable and Adapter Specifications provide an RJ-45-to-DB-25 female DTE adapter. You can order a kit (part number ACS-DSBUASYN=) with that adapter from Cisco. For console-port and adapter-pinout information, see Table B-2 Table B-3. Cable and Adapter Specifications These sections describe the cables and adapters used with Catalyst 2950 switches.

  • Page 99: Four Twisted-Pair Cable Pinouts For 10/100 Ports

    Appendix B Connectors and Cables Cable and Adapter Specifications Four Twisted-Pair Cable Pinouts for 10/100 Ports Figure B-8 Figure B-9 show the schematics of four twisted-pair cables for 10/100 ports. Figure B-8 Four Twisted-Pair Straight-Through Cable Schematic for 10/100 Ports Switch Switch 1 RD+...

  • Page 100: Four Twisted-Pair Cable Pinouts For 1000Base-T Ports

    Appendix B Connectors and Cables Cable and Adapter Specifications Four Twisted-Pair Cable Pinouts for 1000BASE-T Ports Figure B-10 Figure B-11 show the schematics of four twisted-pair cables for 10/100/1000 ports on Catalyst 2950T-24 switches. Figure B-10 Four Twisted-Pair Straight-Through Cable Schematic for 10/100/1000 Ports Switch Switch...

  • Page 101: Rollover Cable And Adapter Pinouts

    Appendix B Connectors and Cables Cable and Adapter Specifications Rollover Cable and Adapter Pinouts This section describes how to identify a rollover cable and also describes the adapter pinouts. Identifying a Rollover Cable You can identify a rollover cable by comparing the two modular cable ends. Hold the cable ends side-by-side, with the tab at the back.

  • Page 102: Connecting To A Terminal

    RJ-45-to-DB-25 adapter. Note The RJ-45-to-DB-25 female DTE adapter is not supplied with the switch. You can order a kit (part number ACS-DSBUASYN=) with that adapter from Cisco. Catalyst 2950 Desktop Switch Hardware Installation Guide B-10 78-11157-02...
  • Page 103 Appendix B Connectors and Cables Cable and Adapter Specifications Figure B-14 Connecting the Console Port to a Terminal Terminal Catalyst 2950 series switch RJ-45-to-RJ-45 rollover cable RJ-45-to-DB-25 adapter (labeled TERMINAL) Table B-3 Console Port Signaling and Cabling Using a DB-25 Adapter Console RJ-45-to-RJ-45 RJ-45-to-DB-25...
  • Page 104 Appendix B Connectors and Cables Cable and Adapter Specifications Catalyst 2950 Desktop Switch Hardware Installation Guide B-12 78-11157-02...

  • Page 105: Appendix

    A P P E N D I X Translated Safety Warnings This appendix repeats in multiple languages the warnings in this guide. These translated warnings can be used with other documents related to this guide. Catalyst 2950 Desktop Switch Hardware Installation Guide 78-11157-02...

  • Page 106: Attaching The Cisco Rps (Model Pwr300-Ac-Rps-N1

    Translated Safety Warnings Attaching the Cisco RPS (model PWR300-AC-RPS-N1) Attaching the Cisco RPS (model PWR300-AC-RPS-N1) Warning Attach only the Cisco RPS (model PWR300-AC-RPS-N1) to the RPS receptacle. Waarschuwing: Slechts de Cisco RPS (model PWR300-AC-RPS-N1) aan de RPS contactdoos verbinden. Varoitus Kiinnitä...

  • Page 107: Lightning Activity Warning

    Appendix C Translated Safety Warnings Lightning Activity Warning Lightning Activity Warning Do not work on the system or connect or disconnect cables during periods Warning of lightning activity. Waarschuwing Tijdens onweer dat gepaard gaat met bliksem, dient u niet aan het systeem te werken of kabels aan te sluiten of te ontkoppelen.

  • Page 108: Power Supply Warning

    Appendix C Translated Safety Warnings Power Supply Warning Power Supply Warning Do not touch the power supply when the power cord is connected. For Warning systems with a power switch, line voltages are present within the power supply even when the power switch is off and the power cord is connected.
  • Page 109 Appendix C Translated Safety Warnings Power Supply Warning Avvertenza Non toccare l’alimentatore se il cavo dell’alimentazione è collegato. Per i sistemi con un interruttore di alimentazione, tensioni di linea sono presenti all’interno dell’alimentatore anche quando l’interruttore di alimentazione è en posizione di disattivazione (off), se il cavo dell’alimentazione è...

  • Page 110: Installation Warning

    Appendix C Translated Safety Warnings Installation Warning Installation Warning Read the installation instructions before you connect the system to its Warning power source. Waarschuwing Raadpleeg de installatie-aanwijzingen voordat u het systeem met de voeding verbindt. Varoitus Lue asennusohjeet ennen järjestelmän yhdistämistä virtalähteeseen.

  • Page 111: Circuit Breaker (15A) Warning

    Appendix C Translated Safety Warnings Circuit Breaker (15A) Warning Circuit Breaker (15A) Warning This product relies on the building’s installation for short-circuit Warning (overcurrent) protection. Ensure that a fuse or circuit breaker no larger than 120 VAC, 15A U.S. (240 VAC, 10A international) is used on the phase conductors (all current-carrying conductors).
  • Page 112 Appendix C Translated Safety Warnings Circuit Breaker (15A) Warning Avvertenza Questo prodotto dipende dall’installazione dell’edificio per quanto riguarda la protezione contro cortocircuiti (sovracorrente). Verificare che un fusibile o interruttore automatico, non superiore a 120 VCA, 15 A U.S. (240 VCA, 10 A internazionale) sia stato usato nei fili di fase (tutti i conduttori portatori di corrente).

  • Page 113: Chassis Warning-Rack-Mounting And Servicing

    Appendix C Translated Safety Warnings Chassis Warning—Rack-Mounting and Servicing Chassis Warning—Rack-Mounting and Servicing To prevent bodily injury when mounting or servicing this unit in a rack, you Warning must take special precautions to ensure that the system remains stable. The following guidelines are provided to ensure your safety: •...
  • Page 114 Appendix C Translated Safety Warnings Chassis Warning—Rack-Mounting and Servicing Varoitus Kun laite asetetaan telineeseen tai huolletaan sen ollessa telineessä, on noudatettava erityisiä varotoimia järjestelmän vakavuuden säilyttämiseksi, jotta vältytään loukkaantumiselta. Noudata seuraavia turvallisuusohjeita: Jos telineessä ei ole muita laitteita, aseta laite telineen alaosaan. •...
  • Page 115 Appendix C Translated Safety Warnings Chassis Warning—Rack-Mounting and Servicing Warnung Zur Vermeidung von Körperverletzung beim Anbringen oder Warten dieser Einheit in einem Gestell müssen Sie besondere Vorkehrungen treffen, um sicherzustellen, daß das System stabil bleibt. Die folgenden Richtlinien sollen zur Gewährleistung Ihrer Sicherheit dienen: Wenn diese Einheit die einzige im Gestell ist, sollte sie unten im Gestell •...
  • Page 116 Appendix C Translated Safety Warnings Chassis Warning—Rack-Mounting and Servicing Advarsel Unngå fysiske skader under montering eller reparasjonsarbeid på denne enheten når den befinner seg i et kabinett. Vær nøye med at systemet er stabilt. Følgende retningslinjer er gitt for å verne om sikkerheten: Denne enheten bør monteres nederst i kabinettet hvis dette er den eneste •...
  • Page 117 Appendix C Translated Safety Warnings Chassis Warning—Rack-Mounting and Servicing ¡Advertencia! Para evitar lesiones durante el montaje de este equipo sobre un bastidor, o posteriormente durante su mantenimiento, se debe poner mucho cuidado en que el sistema quede bien estable. Para garantizar su seguridad, proceda según las siguientes instrucciones: Colocar el equipo en la parte inferior del bastidor, cuando sea la única...

  • Page 118: Overtemperature Warning

    Appendix C Translated Safety Warnings Overtemperature Warning Overtemperature Warning To prevent the switch from overheating, do not operate it in an area that Warning exceeds the maximum recommended ambient temperature of 104°F (40°C). To prevent airflow restriction, allow at least 3 inches (7.6 cm) of clearance around the ventilation openings.

  • Page 119: Tn Power Warning

    Appendix C Translated Safety Warnings TN Power Warning Advarsel For å unngå at bryteren overopphetes skal utstyret ikke brukes på steder hvor anbefalt maks omgivelsestemperatur overstiger 104 grader Farenheit (40°C). La det være minst 3 tommer (7,6 cm) klaring rundt ventilasjonsåpningene for at luftsirkulasjonen skal være uhindret.

  • Page 120: No On/Off Switch Warning

    Appendix C Translated Safety Warnings No On/Off Switch Warning Attention Ce dispositif a été conçu pour fonctionner avec des systèmes d'alimentation TN. Warnung Das Gerät ist für die Verwendung mit TN-Stromsystemen ausgelegt. Avvertenza Il dispositivo è stato progettato per l’uso con sistemi di alimentazione TN.

  • Page 121: Grounded Equipment Warning

    Appendix C Translated Safety Warnings Grounded Equipment Warning Attention Avant de travailler sur un système non équipé d'un commutateur marche-arrêt, débrancher le cordon d'alimentation. Warnung Bevor Sie an einem System ohne Ein/Aus-Schalter arbeiten, ziehen Sie das Netzkabel heraus. Avvertenza Prima di lavorare su un sistema che non è dotato di un interruttore on/off, scollegare il cavo di alimentazione.

  • Page 122: Product Disposal Warning

    Appendix C Translated Safety Warnings Product Disposal Warning Attention Cet équipement doit être relié à la terre. S’assurer que l’appareil hôte est relié à la terre lors de l’utilisation normale. Warnung Dieses Gerät muß geerdet werden. Stellen Sie sicher, daß das Host-Gerät während des normalen Betriebs an Erde gelegt ist.

  • Page 123: Ground Connection Warning

    Appendix C Translated Safety Warnings Ground Connection Warning Attention La mise au rebut définitive de ce produit doit être effectuée conformément à toutes les lois et réglementations en vigueur. Warnung Dieses Produkt muß den geltenden Gesetzen und Vorschriften entsprechend entsorgt werden. Avvertenza L'eliminazione finale di questo prodotto deve essere eseguita osservando le normative italiane vigenti in materia.
  • Page 124 Appendix C Translated Safety Warnings Ground Connection Warning Attention Lors de l’installation de l’appareil, la mise à la terre doit toujours être connectée en premier et déconnectée en dernier. Warnung Der Erdanschluß muß bei der Installation der Einheit immer zuerst hergestellt und zuletzt abgetrennt werden. Avvertenza In fase di installazione dell'unità, eseguire sempre per primo il collegamento a massa e disconnetterlo per ultimo.

  • Page 125: Jewelry Removal Warning

    Appendix C Translated Safety Warnings Jewelry Removal Warning Jewelry Removal Warning Before working on equipment that is connected to power lines, remove Warning jewelry (including rings, necklaces, and watches). Metal objects will heat up when connected to power and ground and can cause serious burns or weld the metal object to the terminals.
  • Page 126 Appendix C Translated Safety Warnings Jewelry Removal Warning Avvertenza Prima di intervenire su apparecchiature collegate alle linee di alimentazione, togliersi qualsiasi monile (inclusi anelli, collane, braccialetti ed orologi). Gli oggetti metallici si riscaldano quando sono collegati tra punti di alimentazione e massa: possono causare ustioni gravi oppure il metallo può...

  • Page 127: Stacking The Chassis Warning

    Appendix C Translated Safety Warnings Stacking the Chassis Warning Stacking the Chassis Warning Do not stack the chassis on any other equipment. If the chassis falls, it can Warning cause severe bodily injury and equipment damage. Waarschuwing Het chassis mag niet op andere apparatuur gestapeld te worden. Als het chassis mocht vallen, kan dit ernstig lichamelijk letsel en beschadiging van de apparatuur veroorzaken.

  • Page 128: Qualified Personnel Warning

    Appendix C Translated Safety Warnings Qualified Personnel Warning ¡Atención! No apilar los chasis sobre ningún otro equipo. Si el chasis se cae al suelo puede causar graves lesiones físicas y daños al equipo. Varning Placera inte chassit ovanpå annan utrustning. Om chassit faller kan allvarlig kroppsskada såväl som skada på...

  • Page 129: Supply Circuit Warning

    Appendix C Translated Safety Warnings Supply Circuit Warning ¡Atención! Estos equipos deben ser instalados y reemplazados exclusivamente por personal técnico adecuadamente preparado y capacitado. Varning Denna utrustning ska endast installeras och bytas ut av utbildad och kvalificerad personal. Supply Circuit Warning Care must be given to connecting units to the supply circuit so that wiring Warning is not overloaded.

  • Page 130: Voltage Warning

    Appendix C Translated Safety Warnings Voltage Warning ¡Atención! Poner mucho cuidado al conectar los equipos al circuito de alimentación a fin de no sobrecargar el cableado. Varning Var noga vid anslutning av enheter till matarströmkretsen så att ledningarna inte överbelastas. Voltage Warning Warning A voltage mismatch can cause equipment damage and may pose a fire...

  • Page 131: Class 1 Laser Product Warning

    Appendix C Translated Safety Warnings Class 1 Laser Product Warning Avvertenza Una tensione inadeguata può causare danni all'apparecchio e rischio di incendio. Se la tensione riportata sulla targhetta è diversa da quella della presa di alimentazione, non collegare lo chassis a tale presa. Advarsel Ulik spenning kan forårsake skade på...

  • Page 132: Laser Beam Exposure Warning

    Appendix C Translated Safety Warnings Laser Beam Exposure Warning Warnung: Produkt-Warnhinweis zu Lasergeräten der Klasse 1 Avvertenza. Prodotto Laser di Classe 1 Advarsel! Advarsel for laserprodukter i klasse 1 Aviso Aviso sobre produtos a laser da Classe 1 Aviso É Aviso sobre producto láser de Clase 1 Varning! Varning beträffande laserprodukt, klass 1 Laser Beam Exposure Warning...

  • Page 133: 48 Vdc Power System

    Appendix C Translated Safety Warnings 48 VDC Power System ¡Advertencia! Evitar la exposición al haz. Varning! Utsätt dig inte för laserstrålningen. 48 VDC Power System Warning The customer 48 volt power system must provide reinforced insulation between the primary AC power and the 48 VDC output. Waarschuwing Het 48 volt stroomsysteem van de klant dient versterkte isolatie tussen de primaire wisselstroom en de 48 VDC-uitgang te...

  • Page 134: Catalyst 2950G-24-Ei-Dc Use On Lans Only

    Appendix C Translated Safety Warnings Catalyst 2950G-24-EI-DC Use on LANs Only Aviso O sistema habitual de corrente de 48 volts deverá fornecer isolamento reforçado entre a corrente alternada (AC) principal e a saída de 48 VDC (tensão em corrente contínua). ¡Advertencia! Aviso: El sistema del cliente de 48 voltios debe proporcionar aislamiento reforzado entre la energía principal AC y la potencia...
  • Page 135 Appendix C Translated Safety Warnings Catalyst 2950G-24-EI-DC Use on LANs Only Avvertenza Lo switch Catalyst 2950G-24-EI-DC e' stato progettato unicamente per connessioni Local Area Network (LAN). Questo dispositivo non è stato certificato per l'utilizzo sulle reti telefoniche pubbliche. Advarsel Nettverksbryteren Catalyst 2950G-24-EI-DC er bare beregnet på tilkobling til LAN-nettverk (Local Area Network).

  • Page 136: Catalyst 2950G-24-Ei-Dc Service Requirement

    Warning (FRUs). Do not open the chassis or attempt to remove or replace any components. For information about obtaining service for this unit, contact your reseller or Cisco sales representative. Waarschuwing De Catalyst 2950G-24-EI-DC bevat geen FRU's (field-replaceable units ofwel veldvervangbare eenheden). Open het chassis niet en probeer geen onderdelen te verwijderen of te vervangen.

  • Page 137: Single Selv Source Warning

    Catalyst 2950G-24-EI-DC innehåller inte några enheter som kan bytas ut på fältet. Öppna inte chassit och försök inte heller att ta bort eller byta ut några delar. Kontakta återförsäljaren eller representanten för Cisco om du behöver information om service av enheten. Single SELV Source Warning...

  • Page 138: Restricted Area Equipment Installation

    Appendix C Translated Safety Warnings Restricted Area Equipment Installation Attention Cet équipement doit être connecté à une alimentation SELV (Single Extra-Low Voltage). Warnung Schließen Sie das Gerät an eine einzelne Stromquelle mit Niedrigspannung (extra-low voltage - SELV) an. Avvertenza Collegate questo apparato a un alimentatore singolo, di basso voltaggio (SELV).

  • Page 139: Ethernet Cable Shielding In Offices

    Appendix C Translated Safety Warnings Ethernet Cable Shielding in Offices Warnung Die Ausrüstung muß in einem Bereich installiert werden, der gegen unbefugtes Betreten geschützt ist. Avvertenza Installate questo apparato unicamente in zone di accesso regolamentate. Advarsel Utstyret skal installeres på et sted med begrenset adgang. Aviso O equipamento é...

  • Page 140: Dc Power Disconnection Warning

    Appendix C Translated Safety Warnings DC Power Disconnection Warning Avvertenza I cavi Ethernet devono essere schermati se utilizzati in un ambiente di ufficio centrale. Advarsel Ethernet-kabler skal være skjermet når de brukes i et sentralt kontormiljø. Aviso Os cabos “Ethernet” deverão estar armados quando usados em ambiente de escritório central.
  • Page 141 Appendix C Translated Safety Warnings DC Power Disconnection Warning Varoitus Varmista, että tasavirtapiirissä ei ole virtaa ennen seuraavien toimenpiteiden suorittamista. Varmistaaksesi, että virta on KATKAISTU täysin, paikanna tasavirrasta huolehtivassa kojetaulussa sijaitseva suojakytkin, käännä suojakytkin KATKAISTU-asentoon ja teippaa suojakytkimen varsi niin, että se pysyy KATKAISTU-asennossa.
  • Page 142 Appendix C Translated Safety Warnings DC Power Disconnection Warning Aviso Antes de executar um dos seguintes procedimentos, certifique-se que desligou a fonte de alimentação de energia do circuito de corrente contínua. Para se assegurar que toda a corrente foi DESLIGADA, localize o disjuntor no painel que serve o circuito de corrente contínua e coloque-o na posição OFF (Desligado), segurando nessa posição a manivela do interruptor do disjuntor com fita isoladora.

  • Page 143: Exposed Dc Power Wire Warning

    Appendix C Translated Safety Warnings Exposed DC Power Wire Warning Exposed DC Power Wire Warning An exposed wire lead from a DC-input power source can conduct Warning harmful levels of electricity. Be sure that no exposed portion of the DC-input power source wire extends from the terminal block plug.

  • Page 144: Equipment Connection Power Source

    Appendix C Translated Safety Warnings Equipment Connection Power Source Aviso Um fio condutor exposto de uma unidade de entrada de DC (corrente contínua) pode transportar níveis perigosos de electricidade. Certifique-se de que nenhuma secção exposta de um fio condutor da fonte de energia de entrada de DC se extende a partir da ficha da placa de terminais.
  • Page 145 Appendix C Translated Safety Warnings Equipment Connection Power Source Avvertenza Questo apparato deve essere collegato unicamente a un alimentatore elettrico limitato autorizzato. Advarsel Utstyret skal kobles til en UL-registrert, begrenset strømkilde. O equipamento deverá ser conectado a uma fonte de energia Aviso limitada Registada.
  • Page 146 Appendix C Translated Safety Warnings Equipment Connection Power Source Catalyst 2950 Desktop Switch Hardware Installation Guide C-42 78-11157-02...

  • Page 147: I N D E X

    I N D E X 100BASE-FX ports (continued) Numerics illustrated 10/100/1000 ports power levels, fiber-optic cable lengths 48 VDC power system warning 2-20, C-30 to C-31 connecting to 2-30 to 2-32 connectors and cables B-3 to B-4 described illustrated AC power 10/100 ports connecting to 2-19...
  • Page 148 Index Catalyst 2950G-24-EI-DC LAN warning 2-20, C-31 to C-32 Catalyst 2950G-24-EI-DC service cable guide, attaching 2-18 warning 2-20, C-33 to C-34 cables cautions, defined 10/100/1000 ports chassis warnings 10/100 ports 1-6 to 1-7 against stacking 2-2, C-24 to C-25 crossover rack-mounting, servicing 2-10, C-10 to C-14 connecting to...
  • Page 149 Index connecting console port to 10/100/1000 ports adapter pinouts 2-30 to 2-32 to 10/100 ports RJ-45-to-DB-25 terminal 2-30 to 2-32 B-11 to 1000BASE-X GBIC module RJ-45-to-DB-9 terminal B-10 ports 2-34 to 2-35 cable, rollover to 100BASE-FX ports 2-33 to 2-34 connecting to 2-37 to 2-39, B-9 to B-11 to AC power...
  • Page 150 2-21, C-36 to C-37 examples, network configuration 1000BASE-X GigaStack described illustrated 1000BASE-X 2-35 fan problems, solving GigaStack 2-36 features 1-1 to 1-3 module slots 1-4 to 1-5 feedback to Cisco Systems, web xvii Catalyst 2950 Desktop Switch Hardware Installation Guide IN-4 78-11157-02...
  • Page 151 Index GigaStack GBIC module ports installation (continued) cable lengths table-mount 2-19 connecting to warning 2-36 2-2, C-7 connectors and cables IOS command-line interface described See CLI illustrated 2-36 IP address procedures 2-39 ground connection warning 2-3, 2-21, C-20 to C-21 grounded equipment warning 2-3, 2-21, C-18 to C-19...
  • Page 152 Index lightning activity warning 2-4, C-3 package contents 2-8 to 2-9 patch cables, MT-RJ PC, connecting to switch 2-37 to 2-39, B-9 to B-10 management options 1-23 to 1-24 performance problems, solving Mode button 1-14 to 1-16 personnel warning 2-2, C-25 to C-26 mounting physical dimensions A-2 to A-3...
  • Page 153 Index port procedures LEDs connecting to DC power 1-9 to 1-12, 1-13 2-20 to 2-29 mode connection 2-30 to 2-39 changing 1-14 to 1-16 installation 2-10 to 2-19 LEDs IP address 1-9 to 1-12, 1-14 to 1-16 2-39 selecting 1-14 to 1-16 power on 2-19 to 2-20 ports...
  • Page 154 Index related publications straight-through cable (continued) xv to xvi restricted access area warning pinout 2-21, C-35 to C-36 rollover cable four twisted-pair, 10/100 ports four twisted-pair, 1000BASE-T ports connecting to two twisted-pair 2-20 connector 1-23 SunNet Manager 1-24 described supply circuit warning 1-23 2-3, C-26 to C-27 switch, power-on...
  • Page 155 Index URLs, Cisco utilization bandwidth 1-17 to 1-20 1-14, 1-17 verifying package contents 2-8 to 2-9 voltage warning 2-3, C-27 to C-28 warnings DC power 2-20 to 2-21, 2-23 to 2-24 defined xiii to xv installation 2-2 to 2-4 translated...
  • Page 156 Index Catalyst 2950 Desktop Switch Hardware Installation Guide IN-10 78-11157-02...

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