Cisco 3750 User Manual
Catalyst 3750 Metro Switch
Hardware Installation Guide
April 2012
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Text Part Number: OL-9160-02
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Catalyst 3750 Metro Switch Hardware Installation Guide
© 2006–2012 Cisco Systems, Inc. All rights reserved.
CONTENTS
Preface vii
Audience i-vii
Purpose i-vii
Organization i-vii
Conventions i-viii
Related Publications i-ix
Obtaining Documentation and Submitting a Service Request ix
Product Overview 1-1
Features 1-1
Front Panel Description 1-2
Console Port 1-3
10/100 and 10/100/1000 Ports 1-3
SFP Module Slots 1-3
LEDs 1-4
System LED 1-4
Power LEDs 1-5
Master LED 1-5
Port LEDs and Modes 1-5
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Rear Panel Description 1-7
Power Connectors 1-7
Power Supply Connector 1-7
Management Options 1-7
Network Configurations 1-8
Switch Installation 2-1
Preparing for Installation 2-1
Warnings 2-1
Installation Guidelines 2-4
Verifying Package Contents 2-5
Verifying Switch Operation 2-5
Connecting a PC or Terminal to the Console Port 2-6
Powering On the Switch and Running POST 2-7
Catalyst 3750 Metro Switch Hardware Installation Guide
iii
Contents
Powering Off the Switch and Disconnecting the Console Port 2-7
Installing the Switch 2-7
Rack-Mounting 2-7
Removing Screws from the Switch 2-8
Attaching Brackets to the Switch 2-8
Mounting the Switch in a Rack 2-11
Attaching the Cable Guide 2-12
Wall-Mounting 2-12
Attaching the Brackets to the Switch for Wall-Mounting 2-12
Mounting the Switch on a Wall 2-13
Table- or Shelf-Mounting 2-14
Installing and Removing SFP Modules 2-14
Installing SFP Modules into SFP Module Slots 2-15
Removing SFP Modules from SFP Module Slots 2-16
Connecting to the 10/100 Ports 2-17
Connecting to an SFP Module 2-18
Connecting to a Fiber-Optic SFP Module 2-19
Connecting to 1000BASE-T SFP Modules 2-20
Where to Go Next 2-21
Connecting the Power Supply 3-1
Connecting to AC Power 3-1
Removing the AC Power Supply 3-3
Connecting to DC Power 3-4
Preparing for Installation 3-4
Grounding the Switch 3-5
Preparing the Ground Wire 3-5
Connecting the Grounding Wire to Earth Ground 3-7
Installing the DC Power Supply in the Switch 3-7
Wiring the DC-Input Power Source 3-9
Removing the DC Power Supply 3-12
Connecting to Both AC and DC Power in the Switch 3-13
Troubleshooting 4-1
iv
Diagnosing Problems 4-1
Verify Switch POST Results 4-2
Monitor Switch LEDs 4-2
Catalyst 3750 Metro Switch Hardware Installation Guide
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Verify Switch Connections 4-2
Bad or Damaged Cable 4-2
Ethernet and Fiber Cables 4-3
Link Status 4-3
Transceiver Module Port Issues 4-3
Port and Interface Settings 4-3
Ping the End Device 4-4
Spanning Tree Loops 4-4
Monitor Switch Performance 4-4
Speed, Duplex, and Autonegotiation 4-4
Autonegotiation and NIC Cards 4-5
Cabling Distance 4-5
Clearing the Switch IP Address and Configuration 4-5
Finding the Switch Serial Number 4-6
Contents
Technical Specifications A-1
Connector and Cable Specifications B-1
Connector Specifications B-1
10/100 Ports B-1
Connecting to 10BASE-T- and 100BASE-TX-Compatible Devices B-2
100BASE-FX Ports B-2
Connecting to 1000BASE-T Devices B-3
SFP Module Ports B-4
Console Port B-4
Cable and Adapter Specifications B-5
SFP Module Cable Specifications B-5
Two Twisted-Pair Cable Pinouts B-6
Four Twisted-Pair Cable Pinouts for 10/100 Ports B-7
Identifying a Crossover Cable B-8
Four Twisted-Pair Cable Pinouts for 1000BASE-T Ports B-8
Adapter Pinouts B-9
Configuring the Switch with the CLI-Based Setup Program C-1
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Taking Out What You Need C-2
Connecting to the Console Port C-3
Starting the Terminal-Emulation Software C-3
Connecting to a Power Source C-4
Catalyst 3750 Metro Switch Hardware Installation Guide
v
I
NDEX
Contents
Entering the Initial Configuration Information C-4
IP Settings C-4
Completing the Setup Program C-5
Connecting to an Ethernet Port C-7
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Audience
Preface
This guide is for the networking or computer technician responsible for installing the Catalyst 3750
Metro switch. We assume that you are familiar with the concepts and terminology of Ethernet and local
area networking. If you are interested in more training and education in these areas, learning
opportunities including training courses, self-study options, seminars, and career certifications programs
are available on the Cisco Training & Events web page:
http://www.cisco.com/web/learning/index.html
Purpose
This guide documents the hardware features of the Catalyst 3750 Metro switch. It describes the physical
and performance characteristics of the switch, explains how to install it, and provides troubleshooting
information.
This guide does not describe system messages that you might receive or how to configure your switch.
For more information, see the switch software configuration guide, the switch command reference, and
the switch system message guide on the 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.
Organization
This guide is organized into these chapters:
Chapter 1, “Product Overview,” is a physical and functional overview of the switch. This chapter
describes the switch ports, the standards they support, and the switch LEDs.
Chapter 2, “Switch Installation,” includes procedures on how to power on the switch; how to install the
switch in a rack, on a wall, on a table, or shelf; and how to make port connections.
Chapter 3, “Connecting the Power Supply,” describes how to connect the AC and DC power supply units
and how to remove the units.
Chapter 4, “Troubleshooting,” describes how to identify and resolve some of the problems that might
arise when you install the switch and how to identify the serial number when it is necessary to call
technical support for help.
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Catalyst 3750 Metro Switch Hardware Installation Guide
vii
Conventions
Appendix A, “Technical Specifications,” lists the physical and environmental specifications for the
switch and the regulatory agency approvals.
Appendix B, “Connector and Cable Specifications,” describes the connectors, cables, and adapters that
you use to connect to the switch.
Appendix C, “Configuring the Switch with the CLI-Based Setup Program,” provides a quick
step-by-step installation and setup procedure for a switch.
Conventions
This document uses these conventions and symbols for notes, cautions, and warnings:
Note Means reader take note. Notes contain helpful suggestions or references to materials not contained in
this manual.
Caution Means reader be careful. In this situation, you might do something that could result in equipment
damage or loss of data.
Preface
Warning
IMPORTANT SAFETY INSTRUCTIONS
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. Use the statement number provided at the end of
each warning to locate its translation in the translated safety warnings that accompanied this
device.
SAVE THESE INSTRUCTIONS
Statement 1071
The safety warnings for this product are translated into several languages in the Regulatory Compliance
and Safety Information for the Catalyst 3750 Metro Switch that ships with the product. The EMC
regulatory statements are also included in that guide.
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Catalyst 3750 Metro Switch Hardware Installation Guide
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Preface
Related Publications
These documents provide complete information about the switch and are available from this
Cisco.com site:
http://www.cisco.com/en/US/products/hw/switches/ps5532/tsd_products_support_series_home.html
Note Before installing, configuring, or upgrading the switch, see the release notes on Cisco.com for the latest
information.
• Release Notes for the Catalyst 3750 Metro Switch
• Catalyst 3750 Metro Switch Getting Started Guide
• Regulatory Compliance and Safety Information for the Catalyst 3750 Metro Switch
• Catalyst 3750 Metro Switch Software Configuration Guide
• Catalyst 3750 Metro Switch Command Reference
• Catalyst 3750 Metro Switch System Message Guide
Related Publications
• Catalyst 3750 Metro Switch Hardware Installation Guide
These compatibility matrix documents are available from this Cisco.com site:
http://www.cisco.com/en/US/products/hw/modules/ps5455/products_device_support_tables_list.html
• Cisco Gigabit Ethernet Transceiver Modules Compatibility Matrix
• Cisco 100-Megabit Ethernet SFP Modules Compatibility Matrix
• Cisco CWDM SFP Transceiver Compatibility Matrix
• Cisco Small Form-Factor Pluggable Modules Compatibility Matrix
• Compatibility Matrix for 1000BASE-T Small Form-Factor Pluggable Modules
Obtaining Documentation and Submitting a Service Request
For information on obtaining documentation, submitting a service request, and gathering additional
information, see the monthly What’s New in Cisco Product Documentation, which also lists all new and
revised Cisco technical documentation, at:
http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html
Subscribe to the What’s New in Cisco Product Documentation as a Really Simple Syndication (RSS) feed
and set content to be delivered directly to your desktop using a reader application. The RSS feeds are a free
service and Cisco currently supports RSS version 2.0.
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Catalyst 3750 Metro Switch Hardware Installation Guide
ix
Related Publications
Preface
Catalyst 3750 Metro Switch Hardware Installation Guide
x
OL-9160-02
Features
CHAP T ER
1
Product Overview
The Catalyst 3750 Metro switch, also referred to as the switch, is a stackable metro Ethernet switch that
can be used as customer-located equipment (CLE) to connect to enterprise customer routers or switches.
You can connect other devices to the switch, including Cisco IP phones, a Cisco Wireless Access Point,
workstations, servers, and PCs. This chapter provides a functional overview of the switch.
These topics are included:
• Features, page 1-1
• Front Panel Description, page 1-2
• Rear Panel Description, page 1-7
• Management Options, page 1-7
You can deploy the switch as an aggregation switch. You can aggregate Ethernet traffic from other
network devices with 10BASE-T, 100BASE-TX, and 1000BASE small-form factor pluggable (SFP)
modules (1000BASE-T, 1000BASE-BX, 1000BASE-SX, 1000BASE-LX/LH, or 1000BASE-ZX SFP
modules). Refer to the switch software configuration guide for examples that show how you might
deploy Catalyst 3750 Metro switches in your network.
These are the switch features:
• Hardware
–
24 10/100 Ethernet ports
–
4 small form-factor pluggable (SFP) module slots. Two are standard SFP module ports, and two
are enhanced-services SFP module ports. The enhanced-services ports support multiprotocol
label switching (MPLS), hierachical quality of service (QoS), and enhanced 802.1Q tunneling.
For information about port numbering, see the “Front Panel Description” section on page 1-2.
–
2 power supply slots that support AC or DC input
For instructions on installing power supply units, see Chapter 3, “Connecting the Power
Supply.”
• The switch supports these SFP modules:
–
100BASE-FX (only in the standard SFP module ports)
–
1000BASE-BX
–
1000BASE-LX
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Catalyst 3750 Metro Switch Hardware Installation Guide
1-1
Front Panel Description
SYST
RPS
MASTR
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SPEED
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Catalyst 3750 Metro
series
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1000BASE-SX
–
1000BASE-T
–
1000BASE-ZX
–
Coarse wavelength-division multiplexing (CWDM)
Note When you install 1000BASE-T SFP modules in the standard ports, they can operate at 10,
100, or 1000 Mb/s in full-duplex mode. When you install 1000BASE-T SFP modules in the
enhanced-services ports, they operate only at 1000 Mb/s.
• Configuration
–
For 10/100 ports, autonegotiates the speed and the duplex settings
–
For standard ports, autonegotiates the speed and the duplex settings
• Power redundancy through an optional second power supply
Front Panel Description
Chapter 1 Product Overview
The switch FastEthernet ports are numbered 1 through 24 (in software they are numbered
fastethernet1/0/1 to fastethernet1/0/24). These ports are grouped into pairs. The first member of the pair
(port 1) is above the second member (port 2) on the far left, as shown in Figure 1-1. Port 3 is above port 4,
and so on.
Figure 1-1 Catalyst 3750 Metro Switch Front Panel
1 Console port 3 Standard SFP module ports
2 10/100 ports 4 Enhanced-services SFP module ports
The standard SFP module ports are numbered 1 and 2 (left to right). In software, they are numbered
gigabitethernet1/0/1 and gigabitethernet1/0/2. The enhanced-services SPF module ports are numbered 1
and 2 (left to right). In software, they are numbered gigabitethernet 1/1/1 and gigabitethernet 1/1/2.
1-2
Catalyst 3750 Metro Switch Hardware Installation Guide
OL-9160-02
Chapter 1 Product Overview
Console Port
You can connect the switch to a PC through the console port by using the supplied RJ-45-to-DB-9 female
cable. If you want to connect the switch console port to a terminal, you need to provide an
RJ-45-to-DB-25 female DTE adapter. You can order a kit (part number ACS-DSBUASYN=) containing
that adapter from Cisco. For console port and adapter pinout information, see Appendix B, “Connector
and Cable Specifications.”
10/100 and 10/100/1000 Ports
You can set the 10/100 ports on the switch to operate in any combination of half duplex, full duplex,
10 Mb/s or 100 Mb/s. You can set the standard 1000BASE-T SFP module ports to operate in 10, 100, or
1000 Mb/s in full duplex. The 1000BASE-T SFP module operates only at 1000 Mb/s in the
enhanced-services ports. You can also set these ports for speed and duplex autonegotiation in compliance
with IEEE 802.3ab. (The default setting is autonegotiate.)
When you set the port for autonegotiation, it identifies the speed and duplex settings of the attached
device and advertises its own capabilities. If the connected device also supports autonegotiation, the
switch port negotiates the best connection (that is, the fastest line speed that both devices support and
full-duplex transmission if the attached device supports it) and configures itself accordingly. In all cases,
the attached device must be within 100 meters (328 feet).
100BASE-TX and 1000BASE-T traffic requires a Category 5 or higher cable. 10BASE-T traffic can use
Category 3 or Category 4 cables. When you connect the switch to workstations, servers, routers, and
Cisco IP Phones, be sure that the cable is a straight-through cable. When you connect the switch to
switches or hubs, use a crossover cable. When you use a straight-through or crossover cable for
1000BASE-T connections, be sure to use a twisted four-pair, Category 5 or higher cable for proper
operation. Pinouts for the cables are described in Appendix B, “Connector and Cable Specifications.”
You can use the mdix auto interface configuration command to enable the automatic crossover feature.
When the automatic crossover feature is enabled, the switch detects the required cable type and
configures the interfaces accordingly. Therefore, you can use either a crossover or a straight-through
cable for all connections to an Ethernet port on the switch.
Front Panel Description
The automatic crossover feature is disabled by default. For configuration information for this feature,
refer to the switch software configuration guide or the switch command reference.
SFP Module Slots
The switch uses Gigabit Ethernet SFP modules to establish fiber-optic connections. 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 or MT-RJ LC or MT-RJ connectors to connect to a fiber-optic SFP module. You use Category
5 or higher cable with RJ-45 connectors to connect to a copper SFP module.
When you install 1000BASE-T SFP modules in the standard ports, they can operate at 10, 100, or 1000
Mb/s in full-duplex mode. When you install 1000BASE-T SFP modules in the enhanced-services ports,
they operate only at 1000 Mb/s. The switch supports 100BASE-FX SFP modules only in standard ports.
See the “Features” section on page 1-1 for a list of SFP modules that the switch supports.
Refer to the Release Notes for the Catalyst 3750 Metro Switch for the most current list of Cisco
SFP module options that the switch supports. For more information about these SFP modules, refer to
your SFP module documentation.
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1-3
Front Panel Description
PWR A
SYST
PWR B
MASTR
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DUPLX
SPEED
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MODE
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Chapter 1 Product Overview
In addition to supporting the features described previously, the enhanced-services SFP modules support
autonegotiation. Refer to the software guides for this switch for information about the features of the
enhanced-services ports.
You can use the switch LEDs to monitor switch activity and performance. Figure 1-2 shows the switch
LEDs and the Mode button that you use to select one of the port modes.
Figure 1-2 Catalyst 3750 Metro Switch LEDs
System LED
1-4
Catalyst 3750 Metro Switch Hardware Installation Guide
1 Mode button 6 Master LED
2 Stack LED (not used) 7 Power B LED
3 Speed LED 8 Power A LED
4 Duplex LED 9 System LED
5 Status LED 10 Port LED
The System LED shows whether the system is receiving power and is functioning properly.
Table 1-1 lists the LED colors and their meanings.
Table 1-1 System LED
Color System Status
Off System is not powered on.
Green System is operating normally.
Amber System is receiving power but is not functioning properly.
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Chapter 1 Product Overview
Power LEDs
Master LED
Front Panel Description
The switch supports up to two power supplies. The PWR A and PWR B LEDs show the status of the
power supply in power slot A and power slot B, respectively. Tab l e 1-2 lists the LED colors and their
meanings.
Table 1-2 Power LED Status Indicators
Color Status
Off The power supply is not installed.
Green The power supply is connected and operating correctly.
Amber The power supply is installed but is either in a fault condition or is not connected
to a valid input power source.
The power LEDs for slot A and slot B work independently of each other.
The Master LED is used in stacking. For this product, which does not support stacking, the Master LED
is green.
Port LEDs and Modes
Each RJ-45 port and SFP 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. Table 1-3 lists the mode LEDs and their associated port modes
and meanings.
To select or change a mode, press the Mode button until the desired mode is highlighted. When you
change port modes, the meanings of the port LED colors also change. Ta ble 1-4 explains how to interpret
the port LED colors in different port modes.
Table 1-3 Port Mode LEDs
Mode LED Port Mode Description
STAT Port status The port status. This is the default mode.
DUPLX Port duplex mode The port duplex mode: full duplex or half duplex.
SPEED Port speed The port operating speed: 10 or 100 10, 100, or 1000 Mb/s.
STACK Not used.
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Catalyst 3750 Metro Switch Hardware Installation Guide
1-5
Front Panel Description
Table 1-4 Meaning of LED Colors in Different Modes on the Switch
Port Mode LED Color Meaning
STAT
(port status)
DUPLX
(duplex)
SPEED
STACK
(stack member)
1. CRC = cyclic redundancy check
Off No link, or port was administratively shut down.
Green Link present.
Flashing green Activity. Port is sending or receiving data.
Alternating
green-amber
Link fault. Error frames can affect connectivity, and errors such as
excessive collisions, CRC
1
errors, and alignment and jabber errors
are monitored for a link-fault indication.
Amber Port is blocked by Spanning Tree Protocol (STP) and is not
forwarding data.
Note After a port is reconfigured, the port LED can remain
amber for up to 30 seconds as STP checks the switch for
possible loops.
Flashing
Port is blocked by STP and is sending or receiving packets.
amber
Off Port is operating in half duplex.
Green Port is operating in full duplex.
10/100 ports
Off Port is operating at 10 Mb/s.
Green Port is operating at 100 Mb/s.
SFP ports
Off Port is operating at 10 Mb/s.
Green Port is operating at 100 Mb/s.
Flashing green Port is operating at 1000 Mb/s.
Note 1000BASE-T SFP modules can operate at 10, 100, or
1000 Mb/s in full-duplex mode only in standard SFP ports.
Not used.
Chapter 1 Product Overview
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Catalyst 3750 Metro Switch Hardware Installation Guide
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Chapter 1 Product Overview
97425
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STACK 1
STACK 1
3
4
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Rear Panel Description
The switch rear panel has two power slots, a grounding lug, and two StackWise ports (not used). (See
Figure 1-3.)
Figure 1-3 Catalyst 3750 Metro Switch Rear Panel
1 StackWise ports (not used) 3 Power slot A (shown with an installed AC
2 Grounding lug (used with a DC power
supply)
Rear Panel Description
power supply)
4 Power slot B
Power Connectors
A power supply that is installed in power slot A powers the switch. This power supply is a
field-replaceable unit (FRU). You can connect an optional FRU power supply in slot B to provide backup
power if power supply A fails. You can power the switch by using either an AC power supply, a DC
power supply, or a combination of the two.
Power Supply Connector
The power supply is an autoranging unit that supports input voltages between 100 and 240 VAC. Use the
supplied AC power cord to connect the AC power connector to an AC power outlet. See Chapter 3,
“Connecting the Power Supply,” for instructions on how to connect the DC power.
Management Options
The switch offers several management options:
• Cisco IOS command-line interface (CLI)
You can fully configure and monitor the switch 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. See Appendix C, “Configuring the Switch with the CLI-Based
Setup Program,” and refer to the Catalyst 3750 Metro Switch Command Reference on Cisco.com for
more information about using the CLI.
Catalyst 3750 Metro Switch Hardware Installation Guide
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1-7
Management Options
Chapter 1 Product Overview
• CiscoView application
The CiscoView device-management application displays the switch image that you can use to set
configuration parameters and to view switch status and performance information. The CiscoView
application, which you purchase separately, can be a standalone application or part of a Simple
Network Management Protocol (SNMP) platform. Refer to the CiscoView documentation for more
information.
• SNMP network management
You can manage switches from a SNMP-compatible management station that is running platforms
such as HP OpenView or SunNet Manager. The switch supports a comprehensive set of Management
Information Base (MIB) extensions and four Remote Monitoring (RMON) groups. Refer to the
switch software configuration guide on Cisco.com and the documentation that came with your
SNMP application for more information.
• Cisco Intelligence Engine 2100 (IE2100)
Cisco IE200 Series Configuration Registrar is a network management device that works with
embedded CNS agents in the switch software. You can automate initial configurations and
configuration updates by generating switch-specific configuration changes, sending them to the
switch, executing the configuration change, and logging the results.
Network Configurations
Refer to the switch software configuration guide on Cisco.com for network configuration concepts and
examples of using the switch to create dedicated network segments and interconnecting the segments
through Gigabit Ethernet connections.
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CHAP T ER
2
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 how to install the switch and make connections to the switch.
Read the topics and perform the procedures in this order:
• Preparing for Installation, page 2-1
• Verifying Switch Operation, page 2-5
• Installing the Switch, page 2-7
• Installing and Removing SFP Modules, page 2-14
• Connecting to the 10/100 Ports, page 2-17
• Connecting to an SFP Module, page 2-18
• Where to Go Next, page 2-21
Preparing for Installation
This section covers these topics:
• Warnings, page 2-1
• Installation Guidelines, page 2-4
• Verifying Package Contents, page 2-5
• Verifying Switch Operation, page 2-5
Warnings
These warnings are translated into several languages in the Regulatory Compliance and Safety
Information Guide for the Catalyst 3750 Metro Switch, which ships with the switch.
Warning
To prevent the switch from overheating, do not operate it in an area that exceeds the maximum
recommended ambient temperature of 113•F (45•C). To prevent airflow restriction, allow at least
3 inches (7.6 cm) of clearance around the ventilation openings.
Statement 17B
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Preparing for Installation
Chapter 2 Switch Installation
Warning
Warning
Warning
Warning
Warning
Warning
Before working on equipment that is connected to power lines, remove 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.
Statement 43
Do not stack the chassis on any other equipment. If the chassis falls, it can cause severe bodily injury
and equipment damage.
Ethernet cables must be shielded when used in a central office environment.
Statement 48
Statement 171
To comply with safety regulations, mount switches on a wall with the front panel facing up.
Statement 266
Suitable for mounting on or over concrete or other non-combustible surface only.
Statement 345
Do not work on the system or connect or disconnect cables during periods of lightning activity.
Statement 1001
Warning
Warning
Warning
Read the installation instructions before connecting the system to the power source.
Statement 1004
This product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that
the protective device is rated not greater than:
15 A, 80 Vdc
Statement 1005
To prevent bodily injury when mounting or servicing this unit in a rack, you must take special
precautions to ensure that the system remains stable. The following guidelines are provided to
ensure your safety:
• This unit should be mounted at the bottom of the rack if it is the only unit in the rack.
• When mounting this unit in a partially filled rack, load the rack from the bottom to the top with the heaviest
component at the bottom of the rack.
• If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing the unit in
the rack.
Statement 1006
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Chapter 2 Switch Installation
Preparing for Installation
Warning
Warning
Warning
Warning
Warning
Warning
Class 1 laser product.
Avoid direct exposure to the laser beam.
Statement 1008
Statement 1012
This unit is intended for installation in restricted access areas. A restricted access area can be
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
disconnecting device.
Statement 1019
A readily accessible two-poled disconnect device must be incorporated in the fixed wiring.
Statement 1022
This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the
absence of a suitably installed ground conductor. Contact the appropriate electrical inspection
authority or an electrician if you are uncertain that suitable grounding is available.
Statement 1024
Warning
Warning
Warning
Warning
Warning
Warning
This unit might have more than one power supply connection. All connections must be removed to
de-energize the unit.
Statement 1028
Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Statement 1030
Ultimate disposal of this product should be handled according to all national laws and regulations.
Statement 1040
For connections outside the building where the equipment is installed, the following ports must be
connected through an approved network termination unit with integral circuit protection.
10/100/1000 Ethernet
Statement 1044
When installing or replacing the unit, the ground connection must always be made first and
disconnected last.
No user-serviceable parts inside. Do not open.
Statement 1046
Statement 1073
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Chapter 2 Switch Installation
Warning
Caution To comply with the Telcordia GR-1089 Network Equipment Building Systems (NEBS) standard for
Installation of the equipment must comply with local and national electrical codes.
electromagnetic compatibility and safety, connect the Ethernet cables only to intrabuilding or unexposed
wiring or cabling.
Note For a list of EMC regulatory statements, see the Regulatory Compliance and Safety Information for the
Catalyst 3750 Metro Switch.
Guidelines for Particulate Matter
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.
You must install this equipment in an environment as free as possible from dust and foreign conductive
material (such as metal flakes from construction activities).
These standard provide guidelines for acceptable working environments and acceptable levels of
suspended particulate matter:
• Network Equipment Building Systems (NEBS) GR-63-CORE
Statement 1074
• National Electrical Manufacturers Association (NEMA) Type 1
• International Electrotechnical Commission (IEC) IP-20
Installation Guidelines
When you determine where to place the switch, be sure to observe these restrictions:
• When you connect cables from 10/100 ports and 1000BASE-T SFP module ports to other devices,
you can use cable lengths up to 328 feet (100 meters).
• See Table B-2 on page B-5 for a list of cable specifications for 1000BASE-SX, 1000BASE-LX,
1000BASE-BX, 1000BASE-ZX, and CWDM fiber-optic SFP module connections. Each port must
match the wave-length specifications on the other end of the cable, and for reliable communications,
the cable must not exceed the stipulated cable length.
Note When you use shorter distances of single-mode fiber cable, you might need to insert an
inline optical attenuator in the link to avoid overloading the receiver.
When the fiber-optic cable span is less than 15.5 miles (25 km), you should insert a
5-decibel (dB) or 10-dB inline optical attenuator between the fiber-optic cable plant and the
receiving port on the 1000BASE-ZX SFP module at each end of the link.
• Operating environment must be within the ranges listed in Appendix A, “Technical Specifications.”
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Chapter 2 Switch Installation
• Clearance to front and rear panels should be such that
• Cabling must be away from sources of electrical noise, such as radios, power lines, and fluorescent
• Airflow around the switch and through the vents must be unrestricted.
• Temperature around the unit does not exceed 113°F (45°C).
Note If you install the switch in a closed or multirack assembly, the temperature around it might be
Preparing for Installation
–
You can easily read the front-panel indicators.
–
Access to ports is sufficient for unrestricted cabling.
Make sure that there is access to the rear of the rack if you are planning to stack the switches.
If you do not have access to the rear panel, make sure that you cable the switches before you
rack-mount them.
–
The AC power cord can reach from the AC power outlet to the connector on the switch rear
panel.
lighting fixtures. Make sure the cabling is safely away from other devices that might damage the
cables.
greater than normal room temperature.
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
material to the shipping container, and save it.
The switch is shipped with these items:
• Catalyst 3750 Metro Switch Getting Started Guide
• Regulatory Compliance and Safety Information for the Catalyst 3750 Metro Switch
• AC power supply (installed) or a DC power supply (installed with ground lug installed)
• AC power cord (AC-powered switches)
• 2 DC terminal block plugs (used with DC-powered switches but shipped with both)
• One RJ-45-to-DB-9 adapter cable
• Mounting kit containing:
–
Four rubber feet for mounting the switch on a table
–
Two 19-inch rack-mounting brackets
–
Four Phillips flat-head screws for attaching the brackets to the switch
–
Four Phillips machine screws for attaching the brackets to a rack
–
Four Phillips truss-head screws and a bracket for mounting the switch on a wall
–
One cable guide and one black Phillips machine screw for attaching the cable guide to one of
the mounting brackets
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Two terminal block plugs
–
One RPS connector cover with 2 number-4 panhead screws (not used with this switch)
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Verifying Switch Operation
Before installing the switch in a rack, on a wall, or on a table or shelf, you should power the switch and
verify that the switch passes POST. These sections describe the steps required to connect a PC to the
switch console port and to power on the switch:
• Connecting a PC or Terminal to the Console Port, page 2-6
• Powering On the Switch and Running POST, page 2-7
Connecting a PC or Terminal to the Console Port
To connect a PC to the console port, use the supplied RJ-45-to-DB-9 adapter cable. To connect the switch
console port to a terminal, you need to provide a RJ-45-to-DB-25 female DTE adapter. You can order a
kit (part number ACS-DSBUASYN=) containing that adapter from Cisco. For console port and adapter
pinout information, see the “Cable and Adapter Specifications” section on page B-5.
You can use terminal-emulation software—frequently a PC application such as Hyperterminal or
Procomm Plus—to make communication between the switch and your PC or terminal possible.
Follow these steps to connect the PC or terminal to the switch:
Chapter 2 Switch Installation
Step 1 Configure the baud rate and character format of the PC or terminal to match these console port default
characteristics:
• 9600 baud
• 8 data bits
• 1 stop bit
• No parity
• None (flow control)
Step 2 Use the supplied RJ-45-to-DB-9 adapter cable to insert the RJ-45 connector into the console port, as
shown in Figure 2-1.
Figure 2-1 Connecting to the Console Port
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Chapter 2 Switch Installation
Step 3 Attach the DB-9 female DTE adapter of the RJ-45-to-DB-9 adapter cable to a PC, or attach an
appropriate adapter to the terminal.
Step 4 Start the terminal-emulation program if you are using a PC or terminal.
Powering On the Switch and Running POST
To power on the switch, follow these steps:
Step 1 Make sure that you have started the terminal emulation software program (such as ProComm,
HyperTerminal, tip, or minicom) from your management station. See the “Connecting a PC or Terminal
to the Console Port” section on page 2-6 for information on connecting to the switch console port.
Step 2 If you are using an AC power supply, connect one end of the AC power cord to the AC power connector
on the switch, and then connect the other end of the power cord to an AC power outlet.
Step 3 If you are using a DC power supply, see the “Connecting to DC Power” section on page 3-4 for
instructions on how to connect the DC power supply.
Step 4 Secure the power cord with the power cord retainer. For more information, see the “Connecting to AC
Power” section on page 3-1.
Installing the Switch
As the switch powers on, it begins POST, a series of tests that run automatically to ensure that the switch
functions properly. When the switch begins POST, the System, the Power A, the Power B, the Master,
the Status, the Duplex, the Speed, and the Stack LEDs turn green. The System LED blinks green, and
the other LEDs remain continuous green. If POST fails, see Chapter 4, “Troubleshooting,” to determine
a course of action.
When the POST is complete, the System LED remains green. The Power A LED remains green for some
time and then resumes operating status. The other LEDs turn off and resume their operating status.
Powering Off the Switch and Disconnecting the Console Port
Disconnect the power cord from the switch. Disconnect the cable from the switch console port. Install
the switch in a rack, on a wall, or on a table or shelf as described in the “Installing the Switch” section
on page 2-7.
Installing the Switch
This section describes these installation procedures:
• Rack-Mounting, page 2-7
• Wall-Mounting, page 2-12
• Table- or Shelf-Mounting, page 2-14
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Rack-Mounting
To install the switch in a 19-inch or 24-inch rack (24-inch racks require optional mounting hardware),
follow the instructions described in these procedures:
Chapter 2 Switch Installation
• Removing Screws from the Switch, page 2-8
• Attaching Brackets to the Switch, page 2-8
• Mounting the Switch in a Rack, page 2-11
• Attaching the Cable Guide, page 2-12
Warning
To prevent bodily injury when mounting or servicing this unit in a rack, you must take special
precautions to ensure that the system remains stable. The following guidelines are provided to
ensure your safety:
• This unit should be mounted at the bottom of the rack if it is the only unit in the rack.
• When mounting this unit in a partially filled rack, load the rack from the bottom to the top with the heaviest
component at the bottom of the rack.
• If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing the unit in
the rack.
Statement 1006
Note Installing the switch in a 24-inch rack requires an optional bracket kit not included with the switch. You
can order a kit containing the 24-inch rack-mounting brackets and hardware from Cisco (part number
RCKMNT-1RU).
Removing Screws from the Switch
If you plan to install the switch in a rack, you must first remove the screws in the switch chassis so that
you can attach the mounting brackets. Figure 2-2 shows how to remove the chassis screws in a switch.
2-8
Figure 2-2 Removing Screws from the Switch
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