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Cisco 3750G-12S - Catalyst Switch - Stackable Hardware Installation Manual

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Catalyst 3750 Switch
Hardware Installation Guide
October 2011
Americas 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: 408 527-0883
Text Part Number: OL-6336-10

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Table of Contents

   Related Manuals for Cisco 3750G-12S - Catalyst Switch - Stackable

   Summary of Contents for Cisco 3750G-12S - Catalyst Switch - Stackable

  • Page 1 Catalyst 3750 Switch Hardware Installation Guide October 2011 Americas 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: 408 527-0883 Text Part Number: OL-6336-10...
  • 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: Table Of Contents

    Master LED 16 Port LEDs and Modes 17 Rear Panel Description 21 StackWise Ports 24 Power Connectors 25 Internal Power Supply Connector 25 DC Power Connector 25 Cisco RPS Connector 25 Console Port 26 Management Options 26 Network Configurations 27...
  • Page 4 Switch Installation 1 Preparing for Installation 1 Warnings 2 Installation Guidelines 6 Box Contents 7 Tools and Equipment 7 Verifying Switch Operation 7 Powering On the Switch and Running POST 7 Powering Off the Switch 8 Planning the Stack 8 Planning Considerations 8 Powering Considerations 8 Cabling Considerations 9...
  • Page 5 Diagnosing Problems 1 Verify Switch POST Results 2 Monitor Switch LEDs 2 Verify Switch Connections 2 Bad or Damaged Cable 2 Ethernet and Fiber Cables 2 Link Status 3 PoE Connections 3 Transceiver Module Port Issues 3 Port and Interface Settings 4 Ping the End Device 4 Spanning Tree Loops 4 Monitor Switch Performance 5...
  • Page 6 Configuring the Switch with the CLI-Based Setup Program 1 Accessing the CLI 2 Accessing the CLI Through Express Setup 2 Accessing the CLI Through the Console Port 2 Taking Out What You Need 3 Stacking the Switches (Optional) 4 Connecting to the Console Port 5 Starting the Terminal Emulation Software 6 Connecting to a Power Source 6 Entering the Initial Configuration Information 7...
  • Page 7: Preface

    Cisco.com Product Documentation home page. For information about the standard Cisco IOS Release 12.1 or 12.2 commands, see the Cisco IOS documentation set from the Cisco.com home page by choosing Support > Documentation > Product and Support Documentation/Cisco IOS Software.
  • Page 8: Related Publications

    Release Notes for the Catalyst 3750 Switch • Release Notes for the Catalyst 3750G Integrated Wireless LAN Controller Switch • Before installing, configuring, or upgrading the switch, see the release notes on Cisco.com for the latest Note information. Catalyst 3750 Switch Software Configuration Guide •...
  • Page 9: Obtaining Documentation, Obtaining Support, And Security Guidelines

    For information on obtaining documentation, obtaining support, providing documentation feedback, security guidelines, and also recommended aliases and general Cisco documents, see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at this URL: http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html...
  • Page 10 Preface Obtaining Documentation, Obtaining Support, and Security Guidelines Catalyst 3750 Switch Hardware Installation Guide OL-6336-10...
  • Page 11: Product Overview

    The Catalyst 3750 family of switches—also referred to as the switches—are stackable Ethernet switches to which you can connect devices like Cisco IP Phones, Cisco Wireless Access Points workstations, and other network devices such as servers, routers, and other switches. This chapter provides a functional overview of the Catalyst 3750 switch models.
  • Page 12 – Catalyst 3750G-24WS-S25 switch—24 10/100/1000 PoE ports, 2 SFP module slots, and an – integrated Cisco wireless LAN controller supporting up to 25 Cisco Lightweight Access Points Catalyst 3750G-24WS-S50 switch—24 10/100/1000 PoE ports, 2 SFP module slots, and an –...
  • Page 13: Fast Ethernet Switches

    StackWise ports. StackWise ports are not user-configurable. Switches are hot-swappable. • Connection for an optional Cisco RPS 2300 or Cisco RPS 675 redundant power system (RPS) that • operates on AC input and supplies backup DC power output to the Catalyst 3750 switches. The Catalyst 3750G-12S-SD switch does not support an RPS.
  • Page 14: Catalyst 3750-24ts And 3750v2-24ts Switch Front Panel

    Chapter 1 Product Overview Front Panel Description The downlink SFP module slots on the Catalyst 3750V2-24FS switch are numbered 1 through 24. The slots are grouped in pairs. The first member of the pair (slots 1) is above the second member (slots 2), as shown in Figure 1-2.
  • Page 15: Catalyst 3750-48ts And 3750v2-48ts Switch Front Panel

    Chapter 1 Product Overview Front Panel Description Catalyst 3750-48TS and 3750V2-48TS Switch Front Panel The 10/100 ports on the switch are numbered 1 through 48. The ports are grouped in pairs. The first member of the pair (port 1) is above the second member (port 2), as shown in Figure 1-4.
  • Page 16: Catalyst 3750-48ps And 3750v2-48ps Switch Front Panel

    Chapter 1 Product Overview Front Panel Description Catalyst 3750-48PS and 3750V2-48PS Switch Front Panel The 10/100 PoE ports on the switch are grouped in pairs. The first member of the pair (port 1) is above the second member (port 2), as shown in Figure 1-6.
  • Page 17 Chapter 1 Product Overview Front Panel Description Figure 1-8 Catalyst 3750G-24T Switch SYS T MA STR STA T DUP LX SPE ED STA CK MO DE Ca tal yst 37 50 SER IES 10/100/1000 ports Figure 1-9 Catalyst 3750G-24TS Switch SYS T MA STR STA T...
  • Page 18: Catalyst 3750g-48ts Switch Front Panel

    Chapter 1 Product Overview Front Panel Description Catalyst 3750G-48TS Switch Front Panel The 10/100/1000 ports on the switch are numbered 1 through 48 and grouped in pairs. The first member of the pair (port 1) is above the second member (port 2), as shown in Figure 1-11.
  • Page 19: Catalyst 3750g-48ps Switch Front Panel

    Chapter 1 Product Overview Front Panel Description Catalyst 3750G-48PS Switch Front Panel The 10/100/1000 PoE ports on the switch are grouped in pairs. The first member of the pair (port 1) is above the second member (port 2), as shown in Figure 1-13.
  • Page 20: Catalyst 3750g Integrated Wireless Lan Controller Switch Front Panel

    LAN controller. Depending on the switch model, the integrated wireless controller can support up to 25 or 50 Cisco Lightweight Access Points. The 10/100/1000 PoE ports switch are numbered 1 through 24 and grouped in pairs. The first member of the pair (port 1) is above the second member (port 2), as shown Figure 1-15.
  • Page 21 IEEE 802.3af-compliant powered device, a Cisco pre-standard IP phone, or a Cisco pre-standard Cisco access point, is connected to it. When you select Never, the port does not provide power even if a Cisco IP phone or an access point •...
  • Page 22: 100base-fx Ports

    For configuration information for this feature, see the switch software configuration guide or the switch command reference. Many legacy powered devices, including older Cisco IP phones and access points that do not fully support IEEE 802.3af, might not support PoE when connected to the switches by a crossover cable.
  • Page 23: Sfp Modules

    Chapter 1 Product Overview 10/100 and 10/100/1000 Ports SFP Modules The Catalyst 3750 switch uses Gigabit Ethernet SFP modules to establish connections to other devices. These transceiver modules are field-replaceable, providing the uplink interfaces when inserted in an SFP module slot. You can use the SFP modules for Gigabit uplink connections to other switches. You use fiber-optic cables with LC or MT-RJ connectors to connect to a fiber-optic SFP module.
  • Page 24: Master Led

    Chapter 1 Product Overview 10/100 and 10/100/1000 Ports Figure 1-16 Switch LEDs (No PoE) S Y S T R P S M A S T R S TA T D U P L X S P E E D S TA C K M O D E Mode button Status LED...
  • Page 25: System Led

    Chapter 1 Product Overview 10/100 and 10/100/1000 Ports Figure 1-18 Catalyst 3750G-24WS-S25 and 3750G-24WS-S50 Switch LEDs S Y S T R P S M A S T R S T A T D U P L X S P E E D S T A C K P o E Mode button...
  • Page 26: Master Led

    (redundancy has been allocated to this device). For more information about the Cisco RPS 2300, see the Cisco Redundant Power System 2300 Hardware Installation Guide. For more information about the Cisco RPS 675, see the Cisco RPS 675 Redundant Power System Hardware Installation Guide.
  • Page 27: Port Leds And Modes

    Chapter 1 Product Overview 10/100 and 10/100/1000 Ports Port LEDs and Modes Each RJ-45 port, SFP module slot, and XENPAK module slot has a port LED. These port LEDs, as a group or individually, display information about the switch and about the individual ports. The port modes determine the type of information that the port LEDs display.
  • Page 28 PoE faults are caused when noncompliant cabling or Caution powered devices are connected to a PoE port. Only standard-compliant cabling can be used to connect Cisco pre-standard IP Phones and wireless access points or IEEE 802.3af-compliant devices to PoE ports. A cable or device that causes a PoE fault must be removed from the network.
  • Page 29 Chapter 1 Product Overview 10/100 and 10/100/1000 Ports Table 1-6 Meaning of LED Colors in Different Modes on the Switch (continued) Port Mode Port LED Color Meaning SPEED 10/100 and 10/100/1000 ports Port is operating at 10 Mb/s. Green Port is operating at 100 Mb/s. Blinking green Port is operating at 1000 Mb/s.
  • Page 30 Chapter 1 Product Overview 10/100 and 10/100/1000 Ports Figure 1-19 Stack LED SYS T MA STR STA T DUP LX SPE ED STA CK MO DE Ca tal ys t 37 50 SER IES SYS T MA STR STA T DUP LX SPE ED STA CK...
  • Page 31: Rear Panel Description

    Chapter 1 Product Overview Rear Panel Description Rear Panel Description The switch rear panel has an AC or DC power connector, an RPS connector (except for the Catalyst 3750G-12S-SD switch), an RJ-45 console port, two StackWise ports, and a service port (only on the Catalyst 3750G Integrated Wireless LAN Controller switches).
  • Page 32 Chapter 1 Product Overview Rear Panel Description Figure 1-22 Catalyst 3750G-24TS Switch DC IN PU TS S TA C K FO R RE PO WE MO TE R SU PP SP EC IFI ED IN S TA C K MA NU +1 2v @ 17 a CO NS OL...
  • Page 33 Chapter 1 Product Overview Rear Panel Description Figure 1-24 Catalyst 3750-24FS and 3750V2-FS Switch ST AC K CO NS OL ST AC K DC INP UT S FO R RE MO PO WE R SU PP SP EC IFI ED IN MA NU 1 StackWise ports 4 RPS connector...
  • Page 34: Stackwise Ports

    The switch ships with a 0.5-meter StackWise cable (72-2632-XX CABASY) that you can use to connect the StackWise ports. Use only approved cables (CAB-STACK-50CM, CAB-STACK-1M, or CAB-STACK-3M), and connect Caution only to similar Cisco equipment. Equipment might be damaged if connected to other nonapproved Cisco cables or equipment. Catalyst 3750 Switch Hardware Installation Guide 1-24...
  • Page 35: Power Connectors

    Cisco RPS 2300 The Cisco RPS 2300 has two output levels: –52 V and 12 V with a maximum output power of 2300 W. The Cisco RPS 2300 is a redundant power system that provides seamless failover for up to six network devices for internal power supply failures.
  • Page 36: Console Port

    Management Options Cisco RPS 675 The Cisco RPS 675 has two output levels: –48 V and 12 V with a maximum output power of 675 W. Use the supplied RPS connector cable to connect the RPS to the switch. The RPS is a redundant power system that can support six external network devices and provides power to one failed device at a time.
  • Page 37: Network Configurations

    Cisco IOS command-line interface (CLI) • The switch CLI is based on Cisco IOS software and is enhanced to support desktop-switching features. You can fully configure and monitor the switch and switch cluster members from the CLI. You can access the CLI either by connecting your management station directly to the switch console port or by using Telnet from a remote management station.
  • Page 38 Chapter 1 Product Overview Management Options Catalyst 3750 Switch Hardware Installation Guide 1-28 OL-6336-10...
  • Page 39: Switch Installation

    C H A P T E R Switch Installation This chapter describes how to start your switch and how to interpret the power-on self-test (POST) that ensures proper operation. It describes the planning and cabling considerations to keep in mind while planning your stack.
  • Page 40: Warnings

    If a redundant power system (RPS) is not connected to the switch, install an RPS connector cover on Warning the back of the switch. Statement 265 Attach only the following Cisco RPS model to the RPS receptacle: Warning PWR-RPS2300, PWR675-AC-RPS-N1=. Statement 370...
  • Page 41 Chapter 2 Switch Installation Preparing for Installation Read the wall-mounting instructions carefully before beginning installation. Failure to use the Warning correct hardware or to follow the correct procedures could result in a hazardous situation to people and damage to the system. Statement 378 Do not work on the system or connect or disconnect cables during periods of lightning activity.
  • Page 42 Chapter 2 Switch Installation Preparing for Installation This unit is intended for installation in restricted access areas. A restricted access area can be Warning accessed only through the use of a special tool, lock and key, or other means of security. Statement 1017 The plug-socket combination must be accessible at all times, because it serves as the main Warning...
  • Page 43 Chapter 2 Switch Installation Preparing for Installation This warning symbol means danger. You are in a situation that could cause bodily injury. Before you Warning work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents.
  • Page 44: Installation Guidelines

    If you install the switch in a closed or multirack assembly, the temperature around it might be greater than normal room temperature. Cisco Ethernet Switches are equipped with cooling mechanisms, such as fans and blowers. However, • these fans and blowers can draw dust and other particles, causing contaminant buildup inside the chassis, which can result in a system malfunction.
  • Page 45: Box Contents

    International Electrotechnical Commission (IEC) IP-20 – Box Contents The switch getting started guide on Cisco.com describes the box contents. If any item is missing or damaged, contact your Cisco representative or reseller for support. Tools and Equipment You need to supply a number-2 Phillips screwdriver to rack-mount the switch.
  • Page 46: Powering Off The Switch

    If you do not specify the length of the StackWise cable, the 0.5-meter cable is supplied. If you require the 1-meter cable or the 3-meter cable, you can order it from your Cisco supplier. For cable numbers, see the “StackWise Ports”...
  • Page 47: Cabling Considerations

    Chapter 2 Switch Installation Planning the Stack If you want a particular switch to become the stack master, power on that switch first. This switch • becomes the stack master and remains the stack master until a master re-election is required. After approximately 10 seconds, power on the remaining switches in the stack.
  • Page 48: Recommended Cabling Configurations

    Chapter 2 Switch Installation Planning the Stack Figure 2-3 Example of a Stack with a Failover Condition Figure 2-4 Example of a Partitioned Stack with a Failover Condition Recommended Cabling Configurations This section describes the recommended cabling configurations for stacking the switches. Stacking Switches in Vertical Racks or on a Table Figure 2-5 is an example of a recommended configuration using the supplied 0.5-meter StackWise cable.
  • Page 49: Installing The Switch

    Chapter 2 Switch Installation Installing the Switch Figure 2-6 Stacking the Catalyst 3750 Switches in a Vertical Rack or on a Table Using 0.5-meter and 3-meter StackWise Cables Side-by-Side Mounting in a Rack or on a Wall Figure 2-7 and Figure 2-8 are examples of recommended configurations where the switches are rack- or wall-mounted side-by-side.
  • Page 50: Rack-mounting

    When you install the switch in a 24-inch rack, an optional bracket kit that is not included with the switch is required. You can order a kit containing the 24-inch rack-mounting brackets and hardware from Cisco. For the Catalyst 3750G-24TS switch, order part number RCKMNT-3550-1.5RU=. For the other Catalyst 3750 switches, order part number RCKMNT-1RU=.
  • Page 51 Chapter 2 Switch Installation Installing the Switch Figure 2-9 Removing Screws from the Catalyst 3750-24TS, 3750V2-24TS, 3750G-24T, 3750-24PS, 3750V2-24PS, 3750-48TS, 3750-48PS, 3750V2-48PS, and 3750G-16TD Switch C at al ys t 3 7 5 0 SE RI ES Figure 2-10 Removing Screws from the Catalyst 3750G-24TS-1U, 3750G-24PS, 3750G-48PS, and 3750G-48TS Switch C a ta ly st 3 7 5 0 G...
  • Page 52 Chapter 2 Switch Installation Installing the Switch Figure 2-12 Removing Screws from the 3750G-24TS Switch C at al ys t 3 7 5 0 SE RI ES Figure 2-13 Removing Screws from the 3750G-24WS-S25 and the 3750G-24WS-S50 Switch Ca ta ly st 37 50 G W ire le ss SE RIE S...
  • Page 53 Chapter 2 Switch Installation Installing the Switch Figure 2-14 Attaching Brackets for 19-inch Racks, Front Panel Forward SY ST RP S M AS TR ST AT DU PL X SP EE D ST AC K M O D E 11 X 13 X 12 X 14 X...
  • Page 54 Chapter 2 Switch Installation Installing the Switch Figure 2-16 Attaching Brackets for 19-Inch Racks, Rear Panel Forward D C IN P U T S F O R R P O W E E M O T R S U P S P E C IF P LY IE D IN...
  • Page 55 Chapter 2 Switch Installation Installing the Switch Phillips flat-head screws Figure 2-19 Attaching Brackets for 24-Inch Telco Racks C at al ys t 37 50 SE RIE S Phillips flat-head screws Attaching Brackets to the Catalyst 3750G Integrated Wireless LAN Controller Switches The wireless LAN controller switches can only be mounted on 19-inch racks.
  • Page 56 Chapter 2 Switch Installation Installing the Switch Figure 2-21 Attaching Brackets for 19-Inch Racks, Rear Panel Forward S E R V IC E DC IN PU TS FO R RE MO TE PO W ER SU PP LY SP EC IFI ED IN MA NU AL Figure 2-22...
  • Page 57 Chapter 2 Switch Installation Installing the Switch The bracket orientation and the brackets that you use depend on whether you are attaching the brackets for a 19-inch, a 23-inch, a 24-inch rack, or a ETSI rack. Figure 2-23 shows the bracket options. Figure 2-23 Rack-Mounting Brackets 19 inch...
  • Page 58 Chapter 2 Switch Installation Installing the Switch Figure 2-24 Attaching Brackets for 19-Inch Racks, Front Panel Forward SY ST RP S M AS TR ST AT DU PL X SP EE D ST AC K M O D E 11 X 12 X Phillips flat-head screws Figure 2-25...
  • Page 59 Chapter 2 Switch Installation Installing the Switch Figure 2-27 Attaching Brackets for 19-Inch Telco Racks C at al ys t 37 50 SE RIE S Phillips flat-head screws Attaching Brackets for 23-Inch Racks This section shows to attach brackets for 23-inch racks in Figure 2-28 Figure 2-29.
  • Page 60 Chapter 2 Switch Installation Installing the Switch Attaching Brackets for 24-Inch Racks and 24-Inch Telco Racks This section shows to attach brackets for ESTI racks in Figure 2-30, Figure 2-31, and Figure 2-32. These illustrations show how to attach each type of bracket to one side of the switch. Follow the same steps to attach the second bracket to the opposite side.
  • Page 61 Chapter 2 Switch Installation Installing the Switch Figure 2-32 Attaching Brackets for 24-Inch Telco Racks C at al ys t 37 50 SE RIE S Phillips flat-head screws Attaching Brackets for ETSI Racks This section shows to attach brackets for ESTI racks in Figure 2-33 Figure 2-34.
  • Page 62 Chapter 2 Switch Installation Installing the Switch Mounting the Switch in a Rack After the brackets are attached to the switch, use the four supplied number-12 Phillips machine screws to securely attach the brackets to the rack, as shown in Figure 2-35, Figure 2-36...
  • Page 63 Chapter 2 Switch Installation Installing the Switch Figure 2-37 Mounting the Catalyst 3750G-24WS-S25 and 3750G-24WS-S50 Switches in a Rack SYST MAS TR ST A T DUP LX Ca tal yst SPEE D 37 50 G ST ACK Wi rel ess SER IES Po E-2 4 LA N Co...
  • Page 64 Chapter 2 Switch Installation Installing the Switch Attaching the Cable Guide We recommend attaching the cable guide to prevent the cables from obscuring the front panel of the switch and the other devices installed in the rack. Use the supplied black screw, as shown in Figure 2-38, Figure 2-39...
  • Page 65: Wall-mounting

    Chapter 2 Switch Installation Installing the Switch Figure 2-40 Attaching the Cable Guide on the Catalyst 3750 Integrated Wireless LAN Controller Switches SYST MAST R ST A T DUPL X Ca taly st SPEE D 375 0G ST ACK Wi rele ss SER IES PoE -24 LA N Co...
  • Page 66 Chapter 2 Switch Installation Installing the Switch Attaching the Brackets to the Switch for Wall-Mounting Figure 2-41 shows how to attach a 19-inch bracket to one side of the switch. Follow the same steps to attach the second bracket to the opposite side. Figure 2-41 Attaching the 19-inch Brackets for Wall-Mounting C at al ys t...
  • Page 67: Mounting The Switch On A Wall

    Chapter 2 Switch Installation Installing the Switch Mounting the Switch on a Wall For the best support of the switch and cables, make sure the switch is attached securely to wall studs or to a firmly attached plywood-mounting backboard. Mount the switch with the front panel facing up, as shown in Figure 2-43.
  • Page 68: Table- Or Shelf-mounting

    Chapter 2 Switch Installation Connecting StackWise Cable to StackWise Ports Connect to the front-panel ports. See the “Connecting to the 10/100 and 10/100/1000 Ports” section • on page 2-39 and the “Connecting to an SFP Module” section on page 2-41 to complete the installation.
  • Page 69 Chapter 2 Switch Installation Connecting StackWise Cable to StackWise Ports Always use a Cisco-approved StackWise cable to connect the switches. Note Figure 2-44 Inserting the StackWise Cable in a StackWise Port S T A C K C O N S O S T A C K Use the window in the StackWise cable to align the connector correctly.
  • Page 70 Chapter 2 Switch Installation Connecting StackWise Cable to StackWise Ports Figure 2-45 shows the correct removal procedure. Figure 2-45 Correct Removal of the StackWise Cable from a StackWise Port S T A C K C O N S O S T A C K Caution Do not remove the cable by using the procedure shown in Figure...
  • Page 71: Installing And Removing Sfp Modules

    SFP connections. Use only Cisco SFP modules on the Catalyst 3750 switch. Each SFP module has an internal serial EEPROM that is encoded with security information. This encoding provides a way for Cisco to identify and validate that the SFP module meets the requirements for the switch.
  • Page 72: Removing Sfp Modules From Sfp Module Slots

    Chapter 2 Switch Installation Installing and Removing SFP Modules Align the SFP module in front of the slot opening. Step 3 Insert the SFP module into the slot until you feel the connector on the module snap into place in the rear Step 4 of the slot.
  • Page 73: Installing And Removing Xenpak Modules (catalyst 3750g-16td Switch)

    Chapter 2 Switch Installation Installing and Removing XENPAK Modules (Catalyst 3750G-16TD Switch) Unlock and remove the SFP module, as shown in Figure 2-49. Step 3 If the module has a bale-clasp latch, pull the bale out and down to eject the module. If the bale-clasp latch is obstructed and you cannot use your index finger to open it, use a small, flat-blade screwdriver or other long, narrow instrument to open the bale-clasp latch.
  • Page 74: Installing A Xenpak Module

    Use only Cisco XENPAK modules on the Catalyst 3750G-16TD switch. Each XENPAK module has an internal serial EEPROM that is encoded with security information. This encoding provides a way for Cisco to identify and validate that the XENPAK module meets the requirements for the switch.
  • Page 75 Chapter 2 Switch Installation Installing and Removing XENPAK Modules (Catalyst 3750G-16TD Switch) To insert a XENPAK module, follow these steps: Attach an ESD-preventive wrist strap to your wrist and to a bare metal surface on the chassis. Step 1 Remove the two Phillips-head retaining screws from the XENPAK module slot cover, and store them for Step 2 later use.
  • Page 76: Removing A Xenpak Module

    Chapter 2 Switch Installation Installing and Removing XENPAK Modules (Catalyst 3750G-16TD Switch) Removing a XENPAK Module To remove a XENPAK module, follow these steps: Attach an ESD-preventive wrist strap to your wrist and to a bare metal surface on the chassis. Step 1 Disconnect the cable from the XENPAK module.
  • Page 77: Connecting To The 10/100 And 10/100/1000 Ports

    You can configure the 10/100 and 10/100/1000 PoE ports on the switch to either automatically provide PoE when a Cisco IP Phone, Cisco Aironet Access Point, or end device compliant with IEEE 802.3af is connected. Alternatively, you can configure them to never provide PoE, even if an IP phone or an access point is connected.
  • Page 78 You can connect the Catalyst 3750 switch to a Cisco IP Phone through a straight-through, twisted four-pair Category 5 or later cable. The rear panel of the Cisco IP Phone might have more than one RJ-45 connector. Use the LAN-to-phone connector to connect the Cisco IP phone to the switch. See the Cisco IP Phone documentation for more information about connecting devices to it.
  • Page 79: Connecting To An Sfp Module

    Chapter 2 Switch Installation Connecting to an SFP Module Connect the other end of the cable to an RJ-45 connector on the other device. The port LED turns on Step 2 when both the switch and the connected device have established link. The port LED is amber while Spanning Tree Protocol (STP) discovers the topology and searches for loops.
  • Page 80 Chapter 2 Switch Installation Connecting to an SFP Module Do not remove the rubber plugs from the SFP module port or the rubber caps from the fiber-optic cable Caution until you are ready to connect the cable. The plugs and caps protect the SFP module ports and cables from contamination and ambient light.
  • Page 81: Connecting To 1000base-t Sfp Modules

    Chapter 2 Switch Installation Connecting to an SFP Module Connecting to 1000BASE-T SFP Modules Follow these steps to connect a Category 5 cable to a 1000BASE-T SFP module port (see Figure 2-57): To prevent ESD damage, follow your normal board and component handling procedures. Caution Step 1 When you connect the switch to servers, workstations, and routers, insert a four twisted-pair,...
  • Page 82: Connecting To A Xenpak Module

    Chapter 2 Switch Installation Connecting to a XENPAK Module Connecting to a XENPAK Module The 10-Gigabit Ethernet XENPAK modules are referred to as 10-Gigabit Ethernet module ports in the switch software documentation. Make sure that the XENPAK module is fully inserted into the module slot and that the captive installation screws are fully tightened before attaching the fiber-optic interface cable connector to the XENPAK module connector.
  • Page 83: Where To Go Next

    You can access the device manager from anywhere in your network through a web browser. For more information, see the device manager online help. Start the Network Assistant application, which is described in the Getting Started with Cisco • Network Assistant guide. Through this GUI, you can configure and monitor a switch cluster or an individual switch.
  • Page 84 Chapter 2 Switch Installation Where to Go Next Catalyst 3750 Switch Hardware Installation Guide 2-46 OL-6336-10...
  • Page 85: Troubleshooting

    You can also get statistics from the browser interface, from the command-line interface (CLI), or from a Simple Network Management Protocol (SNMP) workstation. See the software configuration guide, the switch command reference guide on Cisco.com, or the documentation that came with your SNMP application for details.
  • Page 86: Bad Or Damaged Cable

    LED blinks amber. If POST fails, the system LED remains amber. If POST completes successfully, the system LED rapidly blinks green. POST failures are usually fatal. Contact your Cisco technical support representative if your switch does Note not pass POST.
  • Page 87: Link Status

    PoE fault from the network.) Transceiver Module Port Issues Use only Cisco SFP modules on the switch. Each Cisco module has an internal serial EEPROM that is encoded with security information. This encoding provides a way for Cisco to identify and validate that the module meets the requirements for the switch.
  • Page 88: Port And Interface Settings

    Chapter 3 Troubleshooting Diagnosing Problems Bad or incorrect XENPAK module. Replace the suspect module with a known good module. Verify • that the platform supports the module. See the Table B-2 on page B-4 for a list of supported XENPAK modules. Use the show interfaces privileged EXEC command to check the port or module error-disabled, •...
  • Page 89: Monitor Switch Performance

    Chapter 3 Troubleshooting Diagnosing Problems Monitor Switch Performance Review this section when you troubleshoot switch performance problems. Speed, Duplex, and Autonegotiation If the port statistics show a large number of alignment errors, frame check sequence (FCS), or late-collisions errors, a speed or duplex mismatch might be the problem. A common issue with speed and duplex occurs when the duplex settings are mismatched between two switches, between a switch and a router, or between the switch and a workstation or server.
  • Page 90: Clearing The Switch Ip Address And Configuration

    Chapter 3 Troubleshooting Clearing the Switch IP Address and Configuration Clearing the Switch IP Address and Configuration If you have configured a new switch with an incorrect IP address, or if all of the switch LEDs start blinking when you try to enter Express Setup mode, you can clear the IP address that is configured on the switch.
  • Page 91: Finding The Switch Serial Number

    Step 5 Power on the replacement switch. If you add a replacement switch that has a later Cisco IOS release to the running stack, the replacement Note switch automatically downgrades to the release that the stack is running. The replacement switch, rather than the existing switches, reboots.
  • Page 92 Chapter 3 Troubleshooting Finding the Switch Serial Number Figure 3-2 Catalyst 3750G-12S and 3750-12S-SD Switch Serial Number Location Figure 3-3 Catalyst 3750G-16TD Switch Serial Number Location Figure 3-4 Catalyst 3750-24PS Switch Serial Number Location Figure 3-5 Catalyst 3750G-24PS and 3750G-24TS-1U Switches Serial Number Location Catalyst 3750 Switch Hardware Installation Guide OL-6336-10...
  • Page 93 Chapter 3 Troubleshooting Finding the Switch Serial Number Figure 3-6 Catalyst 3750G-24TS Switch Serial Number Location Figure 3-7 Catalyst 3750-24TS and 3750V2-24TS Switch Serial Number Location Figure 3-8 Catalyst 3750-24PS and 3750V2-24PS Switch Serial Number Location Catalyst 3750 Switch Hardware Installation Guide OL-6336-10...
  • Page 94 Chapter 3 Troubleshooting Finding the Switch Serial Number Figure 3-9 Catalyst 3750G-24WS Switch Serial Number Location Figure 3-10 Catalyst 3750-48PS and 3750V2-48PS Switch Serial Number Location Figure 3-11 Catalyst 3750G-48PS and 3750G-48TS Switches Serial Number Location ST AC K CO NS OL ST AC K DC INP UT S FO...
  • Page 95 Chapter 3 Troubleshooting Finding the Switch Serial Number Figure 3-12 Catalyst 3750-48TS and 3750V2-48TS Switch Serial Number Location Catalyst 3750 Switch Hardware Installation Guide 3-11 OL-6336-10...
  • Page 96 Chapter 3 Troubleshooting Finding the Switch Serial Number Catalyst 3750 Switch Hardware Installation Guide 3-12 OL-6336-10...
  • Page 97: Technical Specifications

    A P P E N D I X Technical Specifications This appendix lists the switch technical specifications in these tables: Specifications for the Catalyst 3750G-12S Switch, Table A-1 on page A-2 • Specifications for the Catalyst 3750G-12S-SD Switch, Table A-2 on page A-2 •...
  • Page 98 Appendix A Technical Specifications Table A-1 Specifications for the Catalyst 3750G-12S Switch Environmental Ranges Operating temperature 32 to 113°F (0 to 45°C) Storage temperature –13 to 158°F (–25 to 70°C) Relative humidity 10 to 85% (noncondensing) Operating altitude Up to 10,000 ft (3049 m) Storage altitude Up to 15,000 ft (4573 m) Power Requirements...
  • Page 99 Appendix A Technical Specifications Table A-3 Specifications for the Catalyst 3750-24FS Switch Environmental Ranges Operating temperature 32 to 113°F (0 to 45°C) Storage temperature –13 to 158°F (–25 to 70°C) Relative humidity 10 to 85% (noncondensing) Operating altitude Up to 10,000 ft (3049 m) Storage altitude Up to 15,000 ft (4573 m) Power Requirements...
  • Page 100 Appendix A Technical Specifications Table A-5 Specifications for the Catalyst 3750G-24T Switch Environmental Ranges Operating temperature 32 to 113°F (0 to 45°C) Storage temperature –13 to 158°F (–25 to 70°C) Relative humidity 10 to 85% (noncondensing) Operating altitude Up to 10,000 ft (3049 m) Storage altitude Up to 15,000 ft (4573 m) Power Requirements...
  • Page 101 Appendix A Technical Specifications Table A-7 Specifications for the Catalyst 3750G-24PS Switch Environmental Ranges Operating temperature 32 to 113°F (0 to 45°C) Storage temperature –13 to 158°F (–25 to 70°C) Relative humidity 10 to 85% (noncondensing) Operating altitude Up to 10,000 ft (3049 m) Storage altitude Up to 15,000 ft (4573 m) Power Requirements...
  • Page 102 Appendix A Technical Specifications Table A-8 Specifications for the Catalyst 3750-48PS Switch (continued) Environmental Ranges Physical Dimensions Weight 13.2 lb (6 kg) Dimensions (H x W x D) 1.73 x 17.5 x 14.8 in. (4.4 x 44.5 x 37.8 cm) Table A-9 Specifications for the Catalyst 3750G-48PS Switch Environmental Ranges...
  • Page 103 Appendix A Technical Specifications Table A-10 Specifications for the Catalyst 3750G-16TD Switch (continued) Environmental Ranges DC input voltages for +12 V @17 A RPS 2300 and 675 Power consumption 180 W, 615 BTUs per hour Power rating 0.180 kVA Physical Dimensions Weight 12.5 lb (5.7 kg) Dimensions (H x W x D) 1.73 x 17.5 x 16.1 in.
  • Page 104 Appendix A Technical Specifications Table A-12 Specifications for the Catalyst 3750G-24TS-1U Switch (continued) Environmental Ranges DC input voltages for +12 V @10.5 A RPS 2300 and 675 Power consumption 100 W Power dissipation 100 W, 314 BTUs per hour Power rating 0.10 kVA Physical Dimensions Weight...
  • Page 105 Appendix A Technical Specifications Table A-14 Specifications for the Catalyst 3750G-48TS Switch (continued) Environmental Ranges AC input voltage 100 to 240 VAC (autoranging) 1.5 to 3 A, 50 to 60 Hz DC input voltages for +12 V @17.5 A RPS 2300 and 675 Power consumption 160 W Power dissipation...
  • Page 106 Appendix A Technical Specifications Table A-16 Specifications for the Catalyst 3750V2-48PS and 3750V2-24PS Switch (continued) Environmental Ranges Relative humidity 10 to 85% (noncondensing) Operating altitude Up to 10,000 ft (3049 m) Storage altitude Up to 15,000 ft (4573 m) Power Requirements AC input voltage 100 to 240 VAC (autoranging) 4 to 8 A, 50 to 60 Hz...
  • Page 107 Appendix A Technical Specifications Table A-18 Specifications for the Catalyst 3750V2-24FS Switch Environmental Ranges Operating temperature 32 to 113°F (0 to 45°C) Storage temperature –13 to 158°F (–25 to 70°C) Relative humidity 10 to 85% (noncondensing) Operating altitude Up to 10,000 ft (3049 m) Storage altitude Up to 15,000 ft (4573 m) Power Requirements...
  • Page 108 Appendix A Technical Specifications Catalyst 3750 Switch Hardware Installation Guide A-12 OL-6336-10...
  • Page 109: Connector And Cable Specifications

    A P P E N D I X Connector and Cable Specifications This appendix describes the Catalyst 3750 switch ports and the cables and adapters that you use to connect the switch to other devices. This appendix includes these sections: “Connector Specifications”...
  • Page 110 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 111: Sfp Module Ports

    Connector and Cable Specifications Connector Specifications Figure B-3 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 112 You need to provide a RJ-45-to-DB-25 female DTE adapter if you want to connect the switch console port to a terminal. You can order a kit (part number ACS-DSBUASYN=) containing that adapter from Cisco. For console port and adapter pinout information, see Table B-4 Table B-5.
  • Page 113: Sfp Module Cable Specifications

    Appendix B Connector and Cable Specifications Cable and Adapter Specifications Cable and Adapter Specifications These sections describe the cables and adapters used with Catalyst 3750 switches: SFP Module Cable Specifications, page B-5 • Two Twisted-Pair Cable Pinouts, page B-6 • Four Twisted-Pair Cable Pinouts for 10/100 Ports, page B-7 •...
  • Page 114 Appendix B Connector and Cable Specifications Cable and Adapter Specifications Table B-3 Fiber-Optic SFP Module Port Cabling Specifications (continued) Wavelength Core Size/Cladding Modal Bandwidth SFP Module (nanometers) Fiber Type Size (micron) (MHz/km) Cable Distance 1000BASE-ZX 1550 G.652 — 43.4 to 62 miles (GLC-ZX-SM (70 to 100 km) CWDM...
  • Page 115 Appendix B Connector and Cable Specifications Cable and Adapter Specifications Four Twisted-Pair Cable Pinouts for 10/100 Ports Figure B-9 Figure B-10 show the schematics of four twisted-pair cables for 10/100/1000 ports. Figure B-9 Four Twisted-Pair Straight-Through Cable Schematic for 10/100/1000 Ports Switch Router or PC 1 TPO+...
  • Page 116: Identifying A Crossover Cable

    Appendix B Connector and Cable Specifications Cable and Adapter Specifications Identifying a Crossover Cable To identify a crossover cable, compare the two modular ends of the cable. Hold the cable ends side-by-side, with the tab at the back. The wire connected to the pin on the outside of the left plug should be a different color from the wire connected to the pin on the inside of the right plug.
  • Page 117: Crossover Cable And Adapter Pinouts

    RJ-45-to-DB-25 female DTE adapter, and the console device. The RJ-45-to-DB-25 female DTE adapter is not supplied with the switch. You can order a kit (part number Note ACS-DSBUASYN=) containing this adapter from Cisco. Catalyst 3750 Switch Hardware Installation Guide OL-6336-10...
  • Page 118 Appendix B Connector and Cable Specifications Cable and Adapter Specifications Table B-5 Console Port Signaling Using a DB-25 Adapter Switch Console RJ-45-to-DB-25 Console Port (DTE) Terminal Adapter Device Signal DB-25 Pin Signal Catalyst 3750 Switch Hardware Installation Guide B-10 OL-6336-10...
  • Page 119: Connecting To Dc Power

    A P P E N D I X Connecting to DC Power This appendix describes how to make DC power connections to the Catalyst 3750G-12S-SD switch. See the “Installing the Switch” section on page 2-11 for instructions on installing the switch. Connecting to DC Power To connect the Catalyst 3750G-12S-SD switch to a DC-input power source, follow the steps in these sections:...
  • Page 120: Grounding The Switch

    Appendix C Connecting to DC Power Connecting to DC Power 6-gauge copper ground wire (insulated or noninsulated) • Four leads of 18-gauge copper wire • Wire-stripping tools for stripping 6- and 18-gauge wires • Grounding the Switch This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the Warning absence of a suitably installed ground conductor.
  • Page 121 Appendix C Connecting to DC Power Connecting to DC Power Using a Panduit crimping tool, crimp the ground lug to the 6-gauge wire, as shown in Figure C-2. Step 4 Figure C-2 Crimping the Ground Lug Step 5 Use the two number-10-32 screws to attach the ground lug and wire assembly to the switch rear panel ground connector, as shown in Figure C-3.
  • Page 122 Appendix C Connecting to DC Power Connecting to DC Power Wiring the DC-Input Power Source Before performing any of the following procedures, ensure that power is removed from the DC circuit. Warning Statement 1003 This product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that Warning the protective device is rated not greater than: 5 A Statement 1005 Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
  • Page 123 Appendix C Connecting to DC Power Connecting to DC Power Identify the positive and negative feed positions for the terminal block connection. The wiring sequence Step 3 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, as shown in Figure C-5.
  • Page 124 Appendix C Connecting to DC Power Connecting to DC Power Insert the exposed wire of one of the four DC-input power source wires into the terminal block plug, as Step 5 shown in Figure C-7. Make sure that you cannot see any wire lead. Only wire with insulation should extend from the terminal block.
  • Page 125 Appendix C Connecting to DC Power Connecting to DC Power Figure C-8 Torquing the Terminal-Block Captive Screws Torque to 4.5 lbf-in. (72 ozf-in.) Repeat Steps 4 and 5 for the remaining three DC-input power source wires. Figure C-9 shows the Step 7 completed wiring of a terminal block plug.
  • Page 126 Appendix C Connecting to DC Power Connecting to DC Power Figure C-10 Inserting the Terminal Block in the Block Header S TA C K CO NS OL S TA C K 36 - 72 3. 0 - 1. – A – Tie wrap Terminal block Remove the tape from the circuit-breaker switch handle, and move the circuit-breaker handle to the...
  • Page 127: Configuring The Switch With The Cli-based Setup Program

    A P P E N D I X Configuring the Switch with the CLI-Based Setup Program This appendix provides a CLI-based setup procedure for a standalone switch or a switch stack. Before connecting the switch to a power source, review the safety warnings in Chapter 2, “Switch Installation.”...
  • Page 128: Accessing The Cli

    Express Setup is supported on switches running Cisco IOS Release 12.1(14)EA1 or later. If you are Note installing a new switch, see the Cisco IOS release label on the rear panel of the switch to determine the release. For switches running releases earlier than Cisco IOS Release 12.1(14)EA1, go to the “Taking Out What...
  • Page 129: Taking Out What You Need

    10/100, 10/100/1000, or 1000BASE-T SFP module port on the switch, regardless of the type of device on the other end of the connection. The auto-MDIX feature is enabled by default on switches running Cisco IOS Release 12.2(18)SE or later. For releases between Cisco IOS Release 12.1(14)EA1 and 12.2(18)SE, the auto-MDIX feature is disabled by default.
  • Page 130: Stacking The Switches (optional)

    Insert one end of the StackWise cable into the StackWise port at the back of a switch. See Figure D-3. Step 1 Note Always use a Cisco-approved StackWise cable to connect the switches. Use the window in the StackWise cable to align the connector correctly. Secure the screws tightly. Step 2 Step 3 Insert the other end of the cable into the connector of the other switch, and secure the screws tightly.
  • Page 131: Connecting To The Console Port

    Appendix D Configuring the Switch with the CLI-Based Setup Program Connecting to the Console Port Connecting to the Console Port You can use the console port to perform the initial configuration. To connect the switch console port to a PC, use the supplied RJ-45-to-DB-9 adapter cable. If you have stacked your switches, connect to the console port of one of the switches in the stack.
  • Page 132: Starting The Terminal Emulation Software

    Note If you are connecting the switch to a Cisco redundant power system (RPS), see the documentation that shipped with your RPS. As the switch powers on, it begins the power-on self-test (POST), a series of tests that runs automatically to ensure that the switch functions properly.
  • Page 133: Entering The Initial Configuration Information

    Note POST failures are usually fatal. Call Cisco Systems if your switch does not pass POST. After you have powered all the switches in the stack, a switch is elected as the stack master. The master LED is green on the stack master switch.
  • Page 134 Appendix D Configuring the Switch with the CLI-Based Setup Program Entering the Initial Configuration Information Basic management setup configures only enough connectivity for management of the system, extended setup will ask you to configure each interface on the system. Would you like to enter basic management setup? [yes/no]: yes Enter a host name for the switch, and press Return.
  • Page 135 For configuration information, see the switch software configuration guide or the switch command reference. To use the Network Assistant, see the Getting Started with Cisco Network Assistant guide on Cisco.com. Catalyst 3750 Switch Hardware Installation Guide...
  • Page 136 Appendix D Configuring the Switch with the CLI-Based Setup Program Entering the Initial Configuration Information Catalyst 3750 Switch Hardware Installation Guide D-10 OL-6336-09...
  • Page 137 25 specifications 2–8 adapter pinouts, terminal RJ-45-to-DB-25 9 RJ-45-to-DB-9 9 altitude, operating and storage 2–8 attaching the Cisco RPS warning 2, 7 autonegotiation 10 autonegotiation troubleshooting 5 bodily injury protection warning 3, 12 brackets See mounting brackets cable guide, attaching 26...
  • Page 138 XENPAK modules 36 removing rubber plugs from SFP module 42 removing rubber plugs from XENPAK module 44 secure terminal block wires 7 torquing recommendation 6 using approved cables 24 Cisco enhanced power negotiation 11 Cisco IOS command-line interface 27...
  • Page 139 Cisco IP Phones, connecting to 10, 40 Cisco RPS See RPS CiscoView 27 Class 1 laser warning 3, 41, 44 CLI 27 accessing by using Express Setup 2 accessing through console port 2 code compliance warning 5 command-line interface See CLI...
  • Page 140 warnings 6 DC power caution 4 DC-I grounding note 5 DC-input power source caution 25 Device Manager description 26 related documentation viii to configure switch 45 diagnosing problems 1 dimensions 2–8 document conventions vii duplex LED 17 duplex, troubleshooting 5 electrical noise, avoiding 6 electromagnetic safety 5 Ethernet and fiber-optic cable troubleshooting 2...
  • Page 141 See also stacking starting the terminal emulation software 6 table or shelf-mounting 30 wall-mounting 27 See also procedures installing SFP modules 33–34 installing XENPAK modules 36–37 jewelry removal warning 2 LEDs color meanings 17 duplex 17 front panel 14 interpreting 17 master 16 PoE 17 port 17–19...
  • Page 142 to configure switch 45 Network Equipment Building Systems See NEBS noise, electrical 6 nonexposed wiring connections caution 8 outside connections warning 4 overheating warning 2 pinouts 10/100 ports 2 10/100/1000 ports 2 console port 10 crossover cables four twisted-pair 10/100 ports 7 four twisted-pair, 1000BASE-T ports 9 two twisted-pair 10/100 ports 6 RJ-45-to-DB-25 terminal adapter 10...
  • Page 143 recommended cables 40 100BASE-FX patch cables 3 numbering of 10/100 10 numbering of 10/100/1000 10 numbering of SFP module ports 8–10 POST LEDs 2 results 1 running at power on 2 running at powerup 7, 6 power connecting to 7 connectors 21, 25 specifications 2–8 power connection warning 3...
  • Page 144 StackWise cable caution 31 StackWise ports 24 straight-through cable pinout four twisted-pair 10/100 ports 7 four twisted-pair 1000BASE-T ports 8 two twisted-pair 10/100 ports 6 SunNet Manager 27 support for Cisco Access Points 10 switch powering on 7 system LED 15 table-mounting 30...
  • Page 145 5 with LEDs 2 troubleshooting spanning tree loops 4 wall-mounting 27 warnings attaching the Cisco RPS 2, 7 Class 1 laser 3, 41, 44 code compliance 5 connecting outside of building 4 connecting the power 3 DC power 6...
  • Page 146 RPS connector cover 2, 28 servicing equipment 4 shielding Ethernet cables 2 stacking equipment 2 wireless LAN controller 10 XENPAK module rubber plugs warning 44 XENPAK modules 2, 13, 4 caution 36 connecting to 44–45 installation 36–37 removal 38 XENPAK modules caution 36...

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