Cisco Systems 3750-X, 3560-X User Manual

Catalyst 3750-X and 3560-X Switch
Hardware

May 2010

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Installation Guide

Text Part Number: OL-19593-01

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Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

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CONTENTS

Preface vii

Purpose vii

Related Publications vii

Obtaining Documentation and Submitting a Service Request viii

CHAPTER

1 Product Overview 1-1

Switch Models 1-1

Front Panel Description 1-3

10/100/1000 Ethernet Ports 1-3
PoE+ Ports 1-3
Network Modules 1-4
SFP and SFP+ Modules 1-5
LEDs 1-8

System LED 1-9
XPS LED 1-9
Port LEDs and Modes 1-9
USB Console LED 1-11
S-PWR LED (Catalyst 3750-X) 1-12
Master LED (Catalyst 3750-X) 1-12
Stack LED (Catalyst 3750-X) 1-12
PoE+ LED 1-13
Network Module LEDs 1-14

USB Mini-Type B Port 1-14

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Rear Panel Description 1-15

RJ-45 Console Port LED 1-16
USB Type A Interface 1-16
StackWise Ports 1-16
Power Supply Modules 1-17

Switch Power Supply Modules 1-17
Fan Modules 1-19
XPS Connector 1-19
StackPower Connector (Catalyst 3750-X Switches) 1-20

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

iii

Contents

Management Ports 1-20

Ethernet Management Port 1-20
USB Mini-Type B Port 1-21

Management Options 1-21

Network Configurations 1-22

CHAPTER

2 Switch Installation 2-1

Preparing for Installation 2-1

Safety Warnings 2-1
Installation Guidelines 2-3
Tools and Equipment 2-4

Planning a Switch Data Stack (Catalyst 3750-X Switches) 2-4

Switch Data Stacking Guidelines 2-5

Data Stack Cabling Configurations 2-5

Data Stack Bandwidth and Partitioning Examples 2-7
Power On Sequence for Switch Data Stacks 2-8

Planning a StackPower Stack (Catalyst 3750-X Switches) 2-8

StackPower Stacking Guidelines 2-8

StackPower Cabling Configurations 2-9

StackPower Partitioning Examples 2-14

Installing the Switch 2-14

Rack-Mounting 2-14

Attaching the Rack-Mount Brackets 2-17

Mounting the Switch in a Rack 2-18
Table- or Shelf-Mounting 2-20
After Installing the Switch 2-21

iv

Connecting to the StackWise Ports (Catalyst 3750-X Switches) 2-21

Connecting to the StackPower Ports (Catalyst 3750-X Switches) 2-22

Connecting the StackPower Ports to the XPS-2200 2-23

Installing a Network Module in the Switch 2-23

Tools and Equipment 2-24
Installing Network Modules 2-24
Removing a Network Module 2-25

Installing SFP and SFP+ Modules 2-25

Installing an SFP Module 2-26
Removing an SFP Module 2-27

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

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Connecting Devices to the Ethernet Ports 2-27

10/100/1000 Ethernet Port Connections 2-28
PoE+ Port Connections 2-28

Where to Go Next 2-29

Contents

CHAPTER

CHAPTER

3 Power Supply and Fan Module Installation 3-1

Power Supply Module Overview 3-1

Installation Guidelines 3-5

Installing an AC Power Supply 3-6

Installing a DC Power Supply 3-7

Equipment That You Need 3-8
Grounding the Switch 3-9
Installing the DC Power Supply in the Switch 3-10
Wiring the DC Input Power Source 3-11

Finding the Power Supply Module Serial Number 3-12

Fan Module Overview 3-14

Installing a Fan Module 3-15

Finding the Fan Module Serial Number 3-15

4 Troubleshooting 4-1

Diagnosing Problems 4-1

Switch POST Results 4-1
Switch LEDs 4-1
Switch Connections 4-2

Bad or Damaged Cable 4-2
Ethernet and Fiber Cables 4-2
Link Status 4-2
10/100/1000 Port Connections 4-3
PoE Port Connections 4-3
SFP Modules 4-3
Interface Settings 4-4
Ping End Device 4-4
Spanning Tree Loops 4-4

Switch Performance 4-4

Speed, Duplex, and Autonegotiation 4-4
Autonegotiation and Network Interface Cards 4-5
Cabling Distance 4-5

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Resetting the Switch to the Factory Default Settings 4-5

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

v

Contents

Finding the Switch Serial Number 4-6

Replacing a Failed Data Stack Member (Catalyst 3750-X Switches) 4-6

APPENDIX

APPENDIX

A Technical Specifications A-1

Switch Specifications A-1

Power Supply Module Specifications A-2

Fan Module Specifications A-4

B Connector and Cable Specifications B-1

Connector Specifications B-1

10/100/1000 Ports B-1
10 Gigabit Ethernet CX1 (SFP+ Copper) Connectors B-2
SFP and SFP+ Modules B-2
10/100 Ethernet Management Port B-3
Console Port B-4

Cable and Adapter Specifications B-5

SFP and SFP+ Module Cable Specifications B-5
Four Twisted-Pair Cable Pinouts B-7
Two Twisted-Pair Cable Pinouts B-7
Identifying a Crossover Cable B-8
Console Port Adapter Pinouts B-8

APPENDIX

vi

C Configuring the Switch with the CLI-Based Setup Program C-1

Accessing the CLI C-1

Accessing the CLI Through Express Setup C-1
Accessing the CLI Through a Console Port C-1

RJ-45 Console Port C-2

USB Console Port C-2
Installing the Cisco Microsoft Windows USB Device Driver C-3

Installing the Cisco Microsoft Windows XP USB Driver C-4

Installing the Cisco Microsoft Windows 2000 USB Driver C-4

Installing the Cisco Microsoft Windows Vista and Windows 7 USB Driver C-4
Uninstalling the Cisco Microsoft Windows USB Driver C-5

Uninstalling the Cisco Microsoft Windows XP and 2000 USB Driver C-5

Uninstalling the Cisco Microsoft Windows Vista and Windows 7 USB Driver C-6

Entering the Initial Configuration Information C-6

IP Settings C-6
Configuring the Setup Program C-6

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

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I

NDEX

Contents

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Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

vii

Contents

viii

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

OL-19593-01

Purpose

Preface

This guide describes the hardware features of the Catalyst 3750-X and 3560-X switches. It describes the
physical and performance characteristics of each switch, explains how to install a switch, and provides
troubleshooting information.

This guide does not describe system messages that you might receive or how to configure your switch.
See the switch software configuration guide, the switch command reference, and the switch system
message guide on

http://www.cisco.com/en/US/products/ps10745/tsd_products_support_series_home.html

Related Publications

Catalyst 3750-X switches:

http://www.cisco.com/en/US/products/ps10745/tsd_products_support_series_home.html

Catalyst 3560-X switches:

http://www.cisco.com/en/US/products/ps10744/tsd_products_support_series_home.html

• Catalyst 3750-X and 3560-X Switch Getting Started Guide

• Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

• Regulatory Compliance and Safety Information for the Catalyst 3750-X and 3560-X Switch

• Installation Notes for the Catalyst 3750-X, Catalyst 3560-X Switch Power Supply Modules

• Installation Notes for the Catalyst 3750-X and 3560-X Switch Fan Module

• Installation Notes for the Catalyst 3750-X and 3560-X Switch Network Modules

• Release Notes for the Catalyst 3750-X and 3560-X Switch

• Catalyst 3750-X and 3560-X Switch Software Configuration Guide

• Catalyst 3750-X and 3560-X Switch Command Reference

• Catalyst 3750-X, 3750-E, 3560-X, and 3560-E Switch System Message Guide

• Cisco IOS Software Installation Document

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Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

vii

Information about Cisco SFP and SFP+ modules is available from this Cisco.com site:

http://www.cisco.com/en/US/products/hw/modules/ps5455/prod_installation_guides_list.html

SFP 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

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
revised Cisco

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

technical documentation, at:

New in Cisco Product Documentation, which also lists all new and

Ve r si o n 2.0.

Preface

viii

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

OL-19593-01

CHA P T ER

1

Product Overview

The Catalyst 3750-X and 3560-X series switches are Ethernet switches to which you can connect devices
such as Cisco IP Phones, Cisco Wireless Access Points, workstations, and other network devices such
as servers, routers, and other switches.

The Catalyst 3750-X switches support stacking through Cisco StackWise technology and power
management through StackPower. The Catalyst
StackPower.

Unless otherwise noted, the term switch refers to a standalone switch and to a switch stack.

• Switch Models, page 1-1

• Front Panel Description, page 1-3

• Rear Panel Description, page 1-15

• Management Options, page 1-21

3560-X switches do not support switch stacking or

Switch Models

Ta b l e 1-1 Catalyst 3750-X Switch Models

Switch Model Cisco IOS Image Description

Catalyst 3750-X-24T-L LAN Base image 24 10/100/1000 Ethernet ports, StackWise Plus, 1

Catalyst 3750-X-48T-L LAN Base image 48 10/100/1000 Ethernet ports, StackWise Plus,

Catalyst 3750-X-24P-L LAN Base image 24 10/100/1000 PoE+2 ports, StackWise Plus, 1

Catalyst 3750-X-48P-L LAN Base image 48 10/100/1000 PoE+2 ports, StackWise Plus,

Catalyst 3750-X-48PF-L LAN Base image 48 10/100/1000 PoE+2 ports, StackWise Plus, 1

Catalyst 3750-X-24T-S IP Base image

network module1 slot, 350-W power supply

one network module

network module1 slot, 715-W power supply

one network module1 slot, 715-W power supply

network module1 slot, 1100-W power supply

3

24 10/100/1000 Ethernet ports, StackWise Plus,
StackPower, 1 network module
power supply

1

slot, 350-W power supply

1

slot, 350-W

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Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

1-1

Switch Models

Chapter 1 Product Overview

Table 1-1 Catalyst 3750-X Switch Models (continued)

Switch Model Cisco IOS Image Description

Catalyst 3750-X-48T-S IP Base image

Catalyst 3750-X-24P-S IP Base image

Catalyst 3750-X-48P-S IP Base image

Catalyst 3750-X-48PF-S IP Base image

1. Available network modules: 10-Gigabit Ethernet network module; 1-Gigabit Ethernet network module; blank module (see

Table 1-3 on page 1-5).

2. PoE+ = Power over Ethernet plus (provides up to 30 W per port).

3. You can upgrade to the IP Services feature set when you order the switch.

3

48 10/100/1000 Ethernet ports, StackWise Plus,
StackPower, 1 network module

1

slot, 350-W

power supply

3

24 10/100/1000 PoE+2 ports, StackWise Plus,
StackPower, 1 network module1 slot, 715-W
power supply

3

48 10/100/1000 PoE+2 ports, StackWise Plus,
StackPower, 1 network module1 slot, 715-W
power supply

3

48 10/100/1000 PoE+2 ports, StackWise Plus,
StackPower, 1 network module1 slot, 1100-W
power supply

Ta b l e 1-2 Catalyst 3560-X Switch Models

Switch Part Number Description

Catalyst 3560-X-24T-L LAN Base image 24 10/100/1000 Ethernet ports, 1 network

module1 slot, 350-W power supply

Catalyst 3560-X-48T-L LAN Base image 48 10/100/1000 Ethernet ports, 1 network

module

1

slot, 350-W power supply

Catalyst 3560-X-24P-L LAN Base image 24 10/100/1000 PoE+2 ports, 1 network

module1 slot, 715-W power supply

Catalyst 3560-X-48P-L LAN Base image 48 10/100/1000 PoE+2 ports, 1 network

module1 slot, 715-W power supply

Catalyst 3560-X-48PF-L LAN Base image 48 10/100/1000 PoE+2 ports, 1 network

module1 slot, 1100-W power supply

Catalyst 3560-X-24T-S IP Base image

Catalyst 3560-X-48T-S IP Base image

Catalyst 3560-X-24P-S IP Base image

3

3

3

24 10/100/1000 Ethernet ports, 1 network
module

48 10/100/1000 Ethernet ports, 1 network
module

1

slot, 350-W power supply

1

slot, 350-W power supply

24 10/100/1000 PoE+2 ports, 1 network
module1 slot, 715-W power supply

Catalyst 3560-X-48P-S IP Base image

3

48 10/100/1000 PoE+2 ports, 1 network
module1 slot, 715-W power supply

Catalyst 3560-X-48PF-S IP Base image

3

48 10/100/1000 PoE+2 ports, 1 network
module1 slot, 1100-W power supply

1. Available network modules: 10-Gigabit Ethernet network module; 1-Gigabit Ethernet network module; blank module (see

Table 1-3 on page 1-5).

2. PoE+ = Power over Ethernet plus (provides up to 30 W per port).

1-2

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

OL-19593-01

Chapter 1 Product Overview

3. You can upgrade to the IP Services feature set when you order the switch.

Front Panel Description

The switch front panel includes a USB Type B console port, the 10/100/1000 Ethernet ports or the
10/100/1000 PoE+ ports, the network module, and the switch LEDs.
3750-X-48 PoE+ switch as an example. All the Catalyst 3750-X and 3560-X switches have similar
components.

Figure 1-1 Switch Front Panel

2

1

3

CONSOLE

MODE

SYST

XPS

STAT

EN

SPEED

S-PWR

DUPLX

MAST

STACK

PoE

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

Front Panel Description

Figure 1-1 shows the Catalyst

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

Catalyst 3750-X PoE+48

4

C3KX-NM-10G

NETWORK

MODULE

47

48

G1

G2/TE1

G3

G4/TE2

251960

1 Mode button 4 10/100/1000 ports

2 USB Type B console port 5 Network Module

3 Status LEDs

10/100/1000 Ethernet Ports

The 10/100/1000 Ethernet ports use RJ-45 connectors with Ethernet pinouts. The maximum cable length
is 328 feet (100 meters). The 100BASE-TX and 1000BASE-T traffic requires Category
or Category

6 unshielded twisted pair (UTP) cable. The 10BASE-T traffic can use Category 3 or

Category 4 UTP cable.

For information about the 10/100/1000 Ethernet port connections and specifications, see the

“10/100/1000 Ethernet Port Connections” section on page 2-28 and Appendix B, “Connector and Cable
Specifications.”

PoE+ Ports

The PoE+ ports use the same connectors as described in the previous section and provide this support.

• Support for IEEE 802.3af compliant powered devices (up to 15.4 W)

• Support for IEEE 802.3at compliant powered devices (up to 30 W)

5

5, Category 5e,

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• Support for Cisco enhanced PoE

• Support for prestandard Cisco powered devices

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

1-3

Front Panel Description

• Configuration for StackPower PoE+. When the switch internal power supply module(s) cannot

support the total load, StackPower configurations allow the switch to leverage power available from
other switches (only Catalyst 3750-X switches)

• Configurable support for Cisco intelligent power management, including enhanced power

negotiation, power reservation, and per-port power policing

Depending on the installed power supply modules, each port can deliver up to 30 W of PoE+. See

Table 1-17 for the power supply matrix that defines the available PoE and PoE+ power per port.

Note The output of the PoE+ circuit has been evaluated as a Limited Power Source (LPS) per IEC 60950-1.

For information about power supply modules, PoE+ port connections, and PoE+ specifications, see the

“Power Supply Modules” section on page 1-17, the “PoE+ Port Connections” section on page 2-28, and
Appendix B, “Connector and Cable Specifications.”

Network Modules

The switch has one hot-swappable network module that provides SFP and SFP+ uplink ports to connect
to other devices. You must insert the network module during switch operation. Operating the switch
without a network module is not supported. A blank module is available.

Chapter 1 Product Overview

The switch generates logs when you insert or remove a network module with SFP ports.

1-4

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

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Chapter 1 Product Overview

Ta b l e 1-3 Network Modules

Front Panel Description

Network Module

1

Description

Blank This module has no uplink ports.

1-Gigabit Ethernet This module has four 1-Gigabit SFP module slots. Any combination of standard

SFP modules are supported. SFP+ modules are not supported.

If you insert an SFP+ module in the 1-Gigabit network module, the SFP+
module does not operate, and the switch logs an error message.

10-Gigabit Ethernet This module has four slots. Two slots support only 1-Gigabit SFP modules, two

slots support either 1-Gigabit SFP or 10-Gigabit SFP+ modules.

The four slots are grouped as two pairs with each pair consisting of one SFP slot
and one SFP+ slot. Each pair supports either two 1-Gigabit SFP modules or one
10-Gigabit SFP+ module. A 10-Gigabit SFP+ module cannot operate at the same
time as the corresponding 1-Gigabit SFP module in the pair.

Supported combinations of SFP and SFP+ modules:

• Slots 1, 2, 3, and 4 populated with 1-Gigabit SFP modules.

• Slots 1 and 2 populated with 1-Gigabit SFP modules and Slot 4 populated

with one 10-Gigabit SFP+ module.

• Slot 2 populated with one 10-Gigabit SFP+ module and Slots 3 and 4

populated with 1-Gigabit SFP modules.

• Slot 2 and Slot 4 each populated with 10-Gigabit SFP+ modules.

A 10-Gigabit SFP+ module takes precedence over a 1-Gigabit SFP module
except when an SFP module is first inserted in Slot 1 and has link. When you
insert an SFP+ module in Slot 2, the SFP in Slot 1 retains link. The SFP+ module
in Slot 2 does not operate.

When the SFP module in Slot 1 is shutdown, loses link, or is removed, the SFP+
module in Slot 2 becomes operational. At this point, the SFP module in Slot

1
will not become operational under any circumstance for as long as an SFP+
module remains in Slot 2 whether it is link up or not.

1. All network modules are hot-swappable.

For information about the network modules, see the “Installing a Network Module in the Switch” section

on page 2-23. For cable specifications, see Appendix B, “Connector and Cable Specifications.”

SFP and SFP+ Modules

The switch-Gigabit Ethernet SFP and SFP+ modules provide copper or fiber-optic connections to other
devices. These transceiver modules are field-replaceable, providing the uplink interfaces when installed
in an SFP module slot. The SFP modules have LC connectors for fiber-optic connections or RJ-45
connectors for copper connections.

Use only Cisco SFP modules on the switch.

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The same precedence applies to Slots 3 and 4.

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

1-5

Front Panel Description

Chapter 1 Product Overview

Ta b l e 1-4 Cisco SFP Modules Supported for the 3750-X and 3560-X Switches

Part Number Description

GLC-GE-100FX= 100FX SFP on GE SFP ports for LAN switches

GLC-LH-SM= GE SFP, LC connector LX/LH transceiver

GLC-SX-MM= GE SFP, LC connector SX transceiver

GLC-T= 1000BASE-T SFP transceiver module for copper connections

GLC-ZX-SM= 1000BASE-ZX SFP module for SMF, 1550 nm

GLC-BX-D= 1000BASE-BX10 SFP module for single-strand SMF, 1490-nm TX,

1310-nm RX wavelength

GLC-BX-U= 1000BASE-BX10 SFP module for single-strand SMF, 1310-nm TX,

1490-nm RX wavelength

CWDM-SFP-1470= CWDM 1470-nm SFP Gigabit Ethernet and 1G/2G FC

CWDM-SFP-1490= CWDM 1490-nm SFP Gigabit Ethernet and 1G/2G FC

CWDM-SFP-1510= CWDM 1510-nm SFP Gigabit Ethernet and 1G/2G FC

CWDM-SFP-1530= CWDM 1530-nm SFP Gigabit Ethernet and 1G/2G FC

CWDM-SFP-1550= CWDM 1550-nm SFP Gigabit Ethernet and 1G/2G FC

CWDM-SFP-1570= CWDM 1570-nm SFP Gigabit Ethernet and 1G/2G FC

CWDM-SFP-1590= CWDM 1590-nm SFP Gigabit Ethernet and 1G/2G FC

CWDM-SFP-1610= CWDM 1610-nm SFP Gigabit Ethernet and 1G/2G FC

SFP-GE-S= 1000BASE-SX SFP module for MMF, 850 nm (DOM)

SFP-GE-L= 1000BASE-LX/LH SFP module for SMF, 1300 nm (DOM)

DWDM-SFP-3033= DWDM SFP 1530.33-nm SFP (100 GHz ITU grid)

DWDM-SFP-3112= DWDM SFP 1531.12-nm SFP (100 GHz ITU grid)

DWDM-SFP-3190= DWDM SFP 1531.90-nm SFP (100 GHz ITU grid)

DWDM-SFP-3268= DWDM SFP 1532.68-nm SFP (100 GHz ITU grid)

DWDM-SFP-3346= DWDM SFP 1533.47-nm SFP (100 GHz ITU grid)

DWDM-SFP-3425= DWDM SFP 1534.25-nm SFP (100 GHz ITU grid)

DWDM-SFP-3504= DWDM SFP 1535.04-nm SFP (100 GHz ITU grid)

DWDM-SFP-3582= DWDM SFP 1535.82-nm SFP (100 GHz ITU grid)

DWDM-SFP-3661= DWDM SFP 1536.61-nm SFP (100 GHz ITU grid)

DWDM-SFP-3739= DWDM SFP 1537.40-nm SFP (100 GHz ITU grid)

DWDM-SFP-3819= DWDM SFP 1538.19-nm SFP (100 GHz ITU grid)

DWDM-SFP-3898= DWDM SFP 1538.98-nm SFP (100 GHz ITU grid)

DWDM-SFP-3977= DWDM SFP 1539.77-nm SFP (100 GHz ITU grid)

DWDM-SFP-4056= DWDM SFP 1540.56-nm SFP (100 GHz ITU grid)

DWDM-SFP-4134= DWDM SFP 1541.35-nm SFP (100 GHz ITU grid)

DWDM-SFP-4214= DWDM SFP 1542.14-nm SFP (100 GHz ITU grid)

DWDM-SFP-4294= DWDM SFP 1542.94-nm SFP (100 GHz ITU grid)

1

2

2

1-6

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

OL-19593-01

Chapter 1 Product Overview

Table 1-4 Cisco SFP Modules Supported for the 3750-X and 3560-X Switches (continued)

Part Number Description

DWDM-SFP-4373= DWDM SFP 1543.73-nm SFP (100 GHz ITU grid)

DWDM-SFP-4453= DWDM SFP 1544.53-nm SFP (100 GHz ITU grid)

DWDM-SFP-4532= DWDM SFP 1545.32-nm SFP (100 GHz ITU grid)

DWDM-SFP-4612= DWDM SFP 1546.12-nm SFP (100 GHz ITU grid)

DWDM-SFP-4692= DWDM SFP 1546.92-nm SFP (100 GHz ITU grid)

DWDM-SFP-4772= DWDM SFP 1547.72-nm SFP (100 GHz ITU grid)

DWDM-SFP-4851= DWDM SFP 1548.51-nm SFP (100 GHz ITU grid)

DWDM-SFP-4931= DWDM SFP 1549.32-nm SFP (100 GHz ITU grid)

DWDM-SFP-5012= DWDM SFP 1550.12-nm SFP (100 GHz ITU grid)

DWDM-SFP-5092= DWDM SFP 1550.92-nm SFP (100 GHz ITU grid)

DWDM-SFP-5172= DWDM SFP 1551.72-nm SFP (100 GHz ITU grid)

DWDM-SFP-5252= DWDM SFP 1552.52-nm SFP (100 GHz ITU grid)

DWDM-SFP-5332= DWDM SFP 1553.33-nm SFP (100 GHz ITU grid)

DWDM-SFP-5413= DWDM SFP 1554.13-nm SFP (100 GHz ITU grid)

DWDM-SFP-5494= DWDM SFP 1554.94-nm SFP (100 GHz ITU grid)

DWDM-SFP-5575= DWDM SFP 1555.75-nm SFP (100 GHz ITU grid)

DWDM-SFP-5655= DWDM SFP 1556.55-nm SFP (100 GHz ITU grid)

DWDM-SFP-5736= DWDM SFP 1557.36-nm SFP (100 GHz ITU grid)

DWDM-SFP-5817= DWDM SFP 1558.17-nm SFP (100 GHz ITU grid)

DWDM-SFP-5898= DWDM SFP 1558.98-nm SFP (100 GHz ITU grid)

DWDM-SFP-5979= DWDM SFP 1559.79-nm SFP (100 GHz ITU grid)

DWDM-SFP-6061= DWDM SFP 1560.61-nm SFP (100 GHz ITU grid)

DWDM-SFP-6141= DWDM SFP 1561.42-nm SFP (100 GHz ITU grid)

1. Not supported for NEBS.

2. DOM = digital optical monitoring.

Front Panel Description

l

OL-19593-01

Ta b l e 1-5 Cisco SFP+ Modules Supported for the 3750-X and 3560-X Switches

Part Number Description

SFP-10G-LR= 10 GBASE LR SFP+ transceiver module for SMF,

1350 nm, LC duplex connector

SFP-10G-SR= 10 GBASE SR SFP+ transceiver module for

MMF, 850 nm, LC duplex connector

SFP-10G-LRM= 10 GBASE-LRM SFP+ module for MMF and

SMF, 1310 nm

SFP-H10GB-CU1M= 10 GBASE-CU Twinax SFP+ cable assembly, 1

meter

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

1-7

Front Panel Description

SYST

XPS

STAT

SPEED

DUPLX

PoE

STACK

MAST

S-PWR

MODE

CONSOLE

1

2

3

4

5

6

7

8

9

10

11

12

EN

1

251962

7

5

4

3

2

8

9

10

6

Chapter 1 Product Overview

Table 1-5 Cisco SFP+ Modules Supported for the 3750-X and 3560-X Switches

Part Number Description

SFP-H10GB-CU3M= 10 GBASE-CU Twinax SFP+ cable assembly, 3

meters

SFP-H10GB-CU5M= 10 GBASE-CU Twinax SFP+ cable assembly,

5meters

For information about SFP modules, see your SFP module documentation and the “Installing SFP and

SFP+ Modules” section on page 2-25. For cable specifications, see Appendix B, “Connector and Cable
Specifications.”

Note When ordering or using CX1 cables, ensure that the version identifier is 2 or higher.

The Catalyst 3560-X switch supports the SFP module patch cable (CAB-SFP-50CM), a 0.5-meter,
copper, passive cable with SFP module connectors at each end. This cable is only used with 1-Gigabit
Ethernet SFP ports to connect two Catalyst 3560-X switches in a cascaded configuration.

LEDs

You can use the switch LEDs to monitor switch activity and its performance. Figure 1-2 shows the
Catalyst 3750-X switch LEDs and the Mode button that you use to select a port mode.

Figure 1-2 Switch Front Panel LEDs

1 System LED 6 USB console port LED

2 XPS1 LED

3 Status LED 8 Master LED

4 Speed LED 9 Stack LED

5 Duplex LED 10 PoE+ LED

7 S-PWR (StackPower) LED

2

2

3

1. XPS = Expandable power system.

2

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

1-8

OL-19593-01

Chapter 1 Product Overview

System LED

Front Panel Description

2. Only Catalyst 3750-X switches.

3. Only switches with PoE+ ports.

Ta b l e 1-6 System LED

Color System Status

Off System is not powered on.

Green System is operating normally.

Blinking Green Switch is running power on self-test (POST).

Blinking Amber There is a fault with one of the following:

• Network module (non-traffic-related)

• Power supply

• Fan module

Amber System is receiving power but is not functioning properly.

For information on the System LED colors during power-on self-test (POST), see the “Diagnosing

Problems” section on page 4-1.

XPS LED

Ta b l e 1-7 XPS LED

Color XPS Status

Off XPS cable is not installed.

Green XPS is connected and ready to provide back-up power.

Blinking green XPS is connected but is unavailable because it is providing power to another device

Amber The XPS is in standby mode or in a fault condition. See the XPS-2200

Blinking amber The power supply in a switch has failed, and the XPS is providing power to that

Port LEDs and Modes

Each Ethernet port and 10-Gigabit Ethernet 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 mode
determines the type of information shown by the port LEDs.
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.
the port LED colors in different port modes.

Switch is in StackPower mode (Catalyst 3750-X).

(redundancy has been allocated to a neighboring device).

documentation for information about the standby mode and fault conditions.

switch (redundancy has been allocated to this device).

Tabl e 1-8 lists the mode LEDs and their

Table 1-9 explains how to interpret

OL-19593-01

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

1-9

Front Panel Description

Chapter 1 Product Overview

When you press the Mode button on any switch in the Catalyst 3750-X switch stack, all the stack
switches change to show the same selected mode. For example, if you press the Mode button on the stack
master to show the SPEED LED, all the other switches in the stack also show the SPEED LED.

Ta b l e 1-8 Port Mode LEDs

Mode LED Port Mode Description

STAT Port status The port status. This is the default mode.

SPEED Port speed The port operating speed: 10, 100, or 1000 Mb/s.

DUPLX Port duplex mode The port duplex mode: full duplex or half duplex.

Note The 10/100/1000 ports operate only in full-duplex

mode.

1

MAST

STACK

PoE+

1. Only Catalyst 3750-X switches.

2. Only switches with PoE+ ports.

1

2

Master The stack master status

Stack member status

StackWise port status

The stack member status.

The StackWise port status. See the “Stack LED (Catalyst

3750-X)” section on page 1-12.

PoE+ port power The PoE+ port status.

Ta b l e 1-9 Meaning of Switch LED Colors in Different Modes

Port Mode Port LED Color Meaning

STAT
(port status)

Off No link, or port was administratively shut down.

Green Link present, no activity.

Blinking 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 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.

After a port is reconfigured, the port LED can be amber for up to 30
seconds as STP checks the switch for possible loops.

SPEED

10/100/1000 ports

Off Port is operating at 10 Mb/s.

Green Port is operating at 100 Mb/s.

Single green

Port is operating at 1000 Mb/s.
flash (on for
100 ms, off for
1900 ms)

Network module slots

Off Port is not operating.

Blinking green Port is operating at up to 10 Gb/s.

1-10

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

OL-19593-01

Chapter 1 Product Overview

Table 1-9 Meaning of Switch LED Colors in Different Modes (continued)

Port Mode Port LED Color Meaning

DUPLX
(duplex)

MAST
(data stack
master)

STACK
(stack member)

PoE+

Front Panel Description

Off Port is operating in half duplex.

Green Port is operating in full duplex.

1

1

2

Off The switch is not the stack master.

Note For a standalone switch, this LED is off.

Green The switch is the stack master.

Amber Error during stack master election.

Off No stack member corresponding to that member number.

Blinking green Stack member number.

Green Member numbers of other stack member switches.

Off PoE+ is off.

If the powered device is receiving power from an AC power source,
the port LED is off even if the device is connected to the switch port.

Green PoE+ is on. The port LED is green when the switch port is providing

power.

Alternating
green and

PoE+ is denied because providing power to the powered device will
exceed the switch power capacity.

amber

Blinking amber PoE+ is off due to a fault or because it has exceeded a limit set in

the switch software.

USB Console LED

Caution PoE+ faults are caused when noncompliant cabling or

powered devices are connected to a PoE+ port. Use only
standard-compliant cabling to connect Cisco prestandard
IP Phones and wireless access points or
IEEE

802.3af-compliant devices to PoE+ ports. You must
remove from the network any cable or device that causes
a PoE+ fault.

Amber PoE+ for the port has been disabled.

Note PoE+ is enabled by default.

1. Only Catalyst 3750-X switches.

2. Only switches with PoE or PoE+ ports.

The USB console LED shows whether there is an active USB connection to the port.

OL-19593-01

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

1-11

Front Panel Description

Ta b l e 1-10 USB Console Port LED

Color Description

Off USB console is disabled.

Green USB console is enabled.

S-PWR LED (Catalyst 3750-X)

Ta b l e 1-11 S-PWR LED

Color Description

Off StackPower cable is not connected, or the switch is in standalone

Green An XPS cable is connected to the XPS-2200.

Blinking Green This appears on the switch in a StackPower ring configuration

Amber There is a fault: load shedding is occurring, a StackPower cable is

Blinking Amber The StackPower budget is not sufficient to meet current power

Chapter 1 Product Overview

mode.

Each StackPower port is connected to another switch or to an
XPS-2200 (Catalyst

that detects an open ring or has only one StackPower cable
connected, and no connection to an XPS-2200.

defective, or administrative action is required. See the switch
software configuration guide for information about configuring
StackPower.

demands.

3750-X switches).

Master LED (Catalyst 3750-X)

Ta b l e 1-12 Master LED

Color Description

Off Switch is not the stack master.

Green Switch is the stack master or a standalone switch.

Amber An error occurred when the switch was selecting the stack master

Stack LED (Catalyst 3750-X)

The stack LED shows the sequence of member switches in a stack. Up to nine switches can be members
of a stack. The first nine port LEDs show the member number of a switch in a stack.
the LEDs on the first switch, which is stack member number 1. For example, if you press the Mode
button and select Stack, the LED for port 1 blinks green. The LEDs for ports 2 and 3 are solid green, as
these represent the member numbers of other switches in the stack. The other port LEDs are off because
there are no more members in the stack.

switch, or another type of stack error occurred.

Figure 1-3 shows

1-12

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

OL-19593-01

Chapter 1 Product Overview

Figure 1-3 Sta ck LED

MODE

MODE

MODE

1 Stack member 1 4 LED blinks green to show that this is switch 1 in the stack.

2 Stack member 2 5 LED is solid green to show that switch 2 is a stack member.

3 Stack member 3 6 LED is solid green to show that switch 3 is a stack member.

Front Panel Description

CONSOLE

MODE

CONSOLE

SYST

XPS

STAT

EN

SPEED

S-PWR

DUPLX

MAST

STACK

PoE

1

2

3

4

5

6

7

8

CONSOLE

9

10

11

12

SYST

EN

1

2

3

4

5

CONSOLE

SYST

EN

1

2

3

4

5

1

XPS

S-PWR

6

XPS

S-PWR

6

2

STAT

MAST

7

8

STAT

MAST

7

8

3

4

SPEED

STACK

9

10

SPEED

STACK

9

10

5

DUPLX

PoE

DUPLX

PoE

6

7

8

9

10

11

12

1

2

3

4

5

6

7

8

9

10

11

12

1

2

3

4

5

6

7

8

9

10

11

11

12

1

2

3

4

5

6

7

8

9

10

11

4

12

1

2

3

4

5

6

7

8

9

10

12

1

2

3

4

5

6

7

8

9

10

SYST

XPS

EN

STAT

SPEED

S-PWR

DUPLX

MAST

STACK

PoE

1

C3KX-NM-10G

NETWORK

1

2

3

4

11

12

5

6

1

2

3

4

7

5

8

6

7

8

9

10

Catalyst 3750-X PoE+48

11

12

5

6

11

12

1

2

3

4

5

6

7

8

9

10

Catalyst 3750-X PoE+48

11

12

11

12

1

2

3

4

5

6

7

8

9

10

Catalyst 3750-X PoE+48

11

12

MODULE

9

10

11

12

G1

G2/TE1

G3

G4/TE2

C3KX-NM-10G

NETWORK
MODULE

G1

G2/TE1

G3

G4/TE2

C3KX-NM-10G

NETWORK

MODULE

G1

G2/TE1

G3

G4/TE2

2

3

253198

PoE+ LED

When you select the Stack LED mode, the representative Stack LEDs are green when the StackWise
ports are up, and the representative Stack LEDs are amber when the ports are down.

If the PoE+ LED mode is not selected on a switch with PoE+ ports, the PoE+ LED still shows detected
PoE+ problems.

Ta b l e 1-13 PoE+ Mode LED

Color PoE+ Status

Off PoE+ mode is not selected. None of the 10/100/1000 ports have been denied power

or are in a fault condition.

Green PoE+ mode is selected, and the port LEDs show the PoE+ status.

Blinking amber PoE+ mode is not selected. At least one of the 10/100/1000 ports has been denied

power, or at least one of the 10/100/1000 ports has a PoE+ fault.

OL-19593-01

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

1-13

Front Panel Description

Catalyst 3750-X PoE+48

37

38

39

40

41

42

43

44

45

46

47

48

C3KX-NM-10G

NETWORK

MODULE

G1

G2/TE1

G3

G4/TE2

253212

1

2

3

4

Network Module LEDs

Figure 1-4 Network Module LEDs (10-Gigabit Network Module Shown)

1 G1 LED 3 G3 LED

2 G2/TE1 LED 4 G4/TE2 LED

Chapter 1 Product Overview

Ta b l e 1-14 Network Module LEDs

Color Network Module Link Status

Off Link is off.

Green Link is on, no activity.

Blinking green Activity on a link, no faults.

Blinking amber Link is off due to a fault or because it has exceeded a limit set in the

Amber Link for the SFP or SFP+ has been disabled.

USB Mini-Type B Port

A USB 5-pin mini-Type B connector on the front panel is available for switch management (Figure 1-5).

switch software.

Caution Link faults are caused when noncompliant cabling is

connected to an SFP or SFP+ port. Use only
standard-compliant cabling to connect to Cisco SFP and
SFP+ ports. You must remove from the network any cable
or device that causes a link fault.

Figure 1-5 USB Mini-Type B Console Port

253163

See the “Management Ports” section on page 1-20 for details.

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

1-14

OL-19593-01

Chapter 1 Product Overview

RES

ET

CON

S

OLE

STACK 1

STACK 2

AUX

A

C

OK

C3KX

-P

WR-715W

AC

PS

O

K

A

C

OK

C3KX

-P

WR-715W

AC

PS

OK

S-PWR

XPS

S

-

PW

R

1

3

4

5

6

7

8

9

10

11

12

13

12

251961

13

2

RES

ET

S

E

R

IA

L

XPS

A

C

OK

C3K

X

-P

WR-715W

AC

PS

OK

CON

SOLE

10

/100T

X

1

3

4

5

6

7

8

11

253392

12

2

9

10

Rear Panel Description

The switch rear panel has a ground connector, an RJ-45 console port, an RJ-45 10/100 management port,
a USB Type A connector, two StackWise connectors (only Catalyst
an XPS-2200 connector, a StackPower connector (only Catalyst
supply module slots. See
Catalyst 3750-X-48 PoE+ switch, which has one connector for either a StackPower or an XPS
connection, and one connector only for StackPower.
panel, which has one connector for XPS and no StackPower connector.

Figure 1-6 Catalyst 3750-X Switch Rear Panel

Rear Panel Description

3750-X switches), two fan modules,

3750-X switches), and two power

Figure 1-6, and the descriptions on the following pages. Figure 1-6 shows the

Figure 1-7 shows the Catalyst 3560-X switch rear

1 Ground connector 8 Fan modules

2 RJ 45 console port LED 9 StackPower or XPS-2200 connector

3 RJ-45 console port 10 StackPower connector

4 RJ-45 10/100 management port 11 Power supply modules (AC power supply

modules shown)

5 USB Type A connector 12 AC power (input) status LED

6 Stack cable connectors 13 Power supply (output) status LED

7 Reset button

Figure 1-7 Catalyst 3560-X Switch Rear Panel

OL-19593-01

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

1-15

Rear Panel Description

1 Ground connector 7 Fan modules

2 RJ-45 console port LED 8 XPS-2200 connector

3 RJ-45 console port 9 Power supply module slot (blank module

4 RJ-45 10/100 management port 10 Power supply module (AC power supply

5 USB Type A connector 11 AC power (input) status LED

6 Reset button 12 Power supply (output) status LED

RJ-45 Console Port LED

Ta b l e 1-15 RJ-45 Console Port LED

Color RJ-45 Console Port Status

Off RS-232 console is disabled.

Green RS-232 console is enabled.

Chapter 1 Product Overview

shown)

module shown)

USB Type A Interface

The USB Type A interface provides access to external USB FLASH devices (also known as thumb drives
or USB keys).

The interface supports Cisco USB flash drives with capacities from 64 MB to 1 GB.

Cisco IOS software provides standard file system access to the flash device: read, write, erase, and copy,
as well as formatting of the flash device with a FAT file system. You can boot the switch from a USB
drive.

For information about the switch management ports, see the switch software configuration guide and the
command reference on Cisco.com and the

StackWise Ports

The Catalyst 3750-X switch ships with a 0.5-meter StackWise cable (CAB-STACK-50CM) that you can
use to connect the StackWise ports.

Caution Use only approved cables (CAB-STACK-50CM, CAB-STACK-1M, CAB-STACK-3M,

CAB-STACK-50CM-NH,CAB-STACK-1M-NH, or CAB-STACK-3M-NH), and connect only to similar
Cisco equipment. Equipment might be damaged if connected to nonapproved Cisco cables or equipment.

You can order these StackWise cables from your Cisco sales representative:

• CAB-STACK-50CM (0.5-meter cable)

“Connector and Cable Specifications” section on page B-1.

1-16

• CAB-STACK-1M= (1-meter cable)

• CAB-STACK-3M= (3-meter cable)

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

OL-19593-01

Chapter 1 Product Overview

• CAB-STACK-50CM-NH= (0.5-meter cable, nonhalogen)

• CAB-STACK-1M-NH= (1-meter cable, nonhalogen)

• CAB-STACK-3M-NH= (3-meter cable, nonhalogen)

Power Supply Modules

The 24- and 48-port switches are powered through one or two internal power supply modules. The

“Switch Power Supply Modules” section on page 1-17 and Table 1-16 describe the supported power

supply modules.

Switch Power Supply Modules

The switch has two internal power supply module slots. You can use two AC modules, two DC modules,
a mixed configuration of one AC and one DC power supply module, or one power supply module and a
blank module.

The switch can operate with either one or two active power supply modules or with power supplied by
an XPS-2200. A Catalyst 3750-X switch that is in a StackPower stack can operate with power supplied
by other switches in the stack.

Rear Panel Description

Table 1-1 and Ta b le 1-2 show the power supply modules that ship with each switch model. All power

supply modules (except the blank modules) have internal fans. All switches ship with a blank power
supply module in the second power supply slot.

Caution Do not operate the switch with one power supply module slot empty. For proper chassis cooling, both

power supply module slots must be populated.

The 350-W and 715-W AC power supply modules are autoranging units that support input voltages
between 100 and 240 VAC. The 1100-W power supply module is an autoranging unit that supports input
voltages between 115 and 240 VAC. The 440-W DC power supply module has dual input feeds (A and
B) and supports input voltages between 36 and 72 VDC. The output voltage range is 51–57 V.

Each AC power supply module has a power cord for connection to an AC power outlet. The 1100-W and
715-W modules use a 16-AWG cord (only North America). All other modules use an 18-AWG cord. The
DC-power supply module must be wired to a DC-power source.

The XPS-2200 powers connected switches when the power supply is removed or fails. When a new
switch power supply is installed, the switch software polls the device. The switch power supply again
provides power, and the XPS-2200 is available to power other devices.

Table 1-16 shows the power supply modules available for Catalyst 3750-X and 3560-X switches and

power supply configurations based on switch models.

Ta b l e 1-16 Switch Power Supply Modules

OL-19593-01

Power Supply Module

C3KX-PWR-1100WAC=
C3KX-PWR-1100WAC-JP=

48-Port

48-Port PoE+

1

Switch

Primary or spare Spare Spare Spare

2

24-Port PoE+
Switch

Non-PoE+
Switch

24-Port
Non-PoE+
Switch

C3KX-PWR-715WAC= Spare Primary or spare Spare Spare

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

1-17

Rear Panel Description

Chapter 1 Product Overview

Table 1-16 Switch Power Supply Modules (continued)

Power Supply Module

48-Port PoE+

1

Switch

24-Port PoE+
Switch

48-Port
Non-PoE+
Switch

24-Port
Non-PoE+
Switch

C3KX-PWR-350WAC= Spare Spare Primary or spare Primary or spare

C3KX-PWR-440WDC= Primary or spare Primary or spare Primary or spare Primary or spare

C3KX-PSBAY-BLNK Blank module Blank module Blank module Blank module

1. For full 15.4 W support on a 48-port PoE+ switch, you must use a C3KX-PWR-1100WAC power supply module.

2. This module is used only in Japan.

Ta b l e 1-17 Switch Power Supply Requirements for PoE and PoE+

PoE Option 24-Port Switch 48-Port Switch

PoE (up to 15.4 W per port) (1) 715-W power supply

(1) 1100-W power supply

(2) 440-W DC power supplies

PoE+ (up to 30 W per port) (1) 1100-W power supply (1) 1100-W power supply plus one

715-W power supply
or
(2) 1100-W power supplies

Note A 48-port switch with one 715-W power supply provides up to 8.7 W of PoE to all ports.

The power supply modules have two status LEDs.

Ta b l e 1-18 Switch Power Supply Module LEDs

AC-Power Supply Module LEDs

AC OK Description PS OK Description

Off No AC input power. Off Output is disabled, or input is

outside operating range (AC LED
is off).

Green AC input power present. Green Power output to switch active.

Red Output has failed.

DC-Power Supply Module LEDs

DC OK Description PS OK Description

Off No DC input power. Off Output is disabled, or input is

outside operating range (DC LED
is off).

Green DC input power present. Green Power output to switch active.

Red Output has failed.

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Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

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Chapter 1 Product Overview

Fan Modules

Rear Panel Description

For information about replacing a power supply module, wiring a DC power supply module, and module
specifications, see

Specifications.”

The switch has two internal hot-swappable 12-V fan modules, each with two fans. The air circulation
system consists of the fan modules and the power supply modules. The airflow patterns vary depending
on the power supply configuration.

Figure 1-8 shows the airflow patterns for the 24- and 48-port switches. The blue arrow shows cool air

flow, and the red arrow shows warm air flow. When the fan modules are operating properly, a green LED
is on at the top left corner of the fan assembly (viewed from the rear). If the fan fails, the LED turns to
amber.

Figure 1-8 24- and 48-Port Switch Airflow Patterns

Chapter 3, “Power Supply and Fan Module Installation,” and Appendix A, “Technical

XPS Connector

Warning

CONSOLE

MODE

SYST

XPS

EN

STAT

SPEED

S-PWR

DUPLX

MAST

STACK

PoE

1

2

3

4

5

6

7

8

9

10

11

12

1

2

3

4

5

6

7

8

9

10

11

12

1

2

3

4

5

6

7

8

9

10

11

12

1

2

3

4

5

6

7

8

9

Catalyst 3750-X PoE+48

C3KX-NM-10G

NETWORK

MODULE

10

11

12

G1

G2/TE1

G3

G4/TE2

253199

For information about installing a fan module and the module specifications, see Chapter 3, “Power

Supply and Fan Module Installation,” and Appendix A, “Technical Specifications.”

Attach only the following Cisco external power system to the switch: XPS 2200.

Statement 387

The Cisco XPS-2200 is a expandable power system that can support nine network switches and provides
power to one or two failed switches at a time. It senses when the power supply of a connected switch
fails and provides power to the failed switch.

Use the XPS-2200 only with approved Cisco XPS cables. You can order these XPS cables for connecting
your switch to the XPS-2200 from your Cisco sales representative:

• CAB-XPS-58CM (0.58-meter cable)

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• CAB-XPS-150CM (1.5-meter cable)

The Cisco XPS-2200 has a nominal output level of –56 V. The total maximum output power depends on
the installed power supply modules.

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

1-19

Rear Panel Description

Chapter 1 Product Overview

The nine ports on the XPS-2200 provide the power and management signals to the Catalyst 3750-X and
3560-X switches. Other switch models do not support this management communication. The XPS-2200
communicates with each switch through the 12-pin cable. All connected switches can simultaneously
communicate with the XPS-2200. You can configure these XPS-2200 features through the switch
software:

• Enable XPS active or standby mode for each connected switch

• Configure switch priority for XPS support

• List the connected switches and power supply module sizes

• Report when a switch is powered by the XPS

• Report the XPS power supply module status

• Read and monitor backup, failure, and exception history

See the switch software configuration guide on Cisco.com:

http://www.cisco.com/en/US/products/ps10745/products_installation_and_
configuration_guides_list.html

StackPower Connector (Catalyst 3750-X Switches)

The Catalyst 3750-X switches have a StackPower connector for use with Cisco StackPower cables to
configure a switch power stack that includes up to four switches. By adding an XPS-2200 expandable
power system, you can configure a power stack that comprises up to nine switches. A switch power stack
can be configured in redundant or power-sharing mode.

You can order these StackPower cables from your Cisco sales representative:

• CAB-SPWR-30CM (0.3-meter cable)

• CAB-SPWR-150CM (1.5-meter cable)

For details about connecting StackPower cables and StackPower guidelines, see the “Planning a

StackPower Stack (Catalyst 3750-X Switches)” section on page 2-8.

Management Ports

Ethernet Management Port

You can connect the switch to a host such as a Windows workstation or a terminal server through the
10/100

Ethernet management port or one of the console ports (see Figure 1-5 and Figure 1-6). The
10/100 Ethernet management port connection uses a RJ-45 crossover or straight-through cable. The
RJ-45 console port connection uses the supplied RJ-45-to-DB-9 female cable. The USB console port
uses a USB type-A-to-USB 5-pin mini-Type B cable.

Table 1-19 shows the Ethernet management port LED colors and their meanings.

1-20

Ta b l e 1-19 RJ-45 Console Port LED

Color Description

Green Active link to PC

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

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Chapter 1 Product Overview

Table 1-19 RJ-45 Console Port LED

Color Description

Off Inactive link

Amber POST failure

USB Mini-Type B Port

The switch provides a USB mini-Type B console connection on the front panel, and the RJ-45 console
port on the switch rear panel. Console output is always active on both connectors, but console input is
active on only one connector at a time, with the USB connector taking precedence over the RJ-45
connector.

Use a USB type-A-to-USB 5-pin mini-Type B cable to connect a PC or other device to the switch. The
required USB cable is included in the optional accessory kit, (part number 800-33434).

The connected device must include a terminal emulation application.

Windows PCs need a driver for the USB port. See the “Installing the Cisco Microsoft Windows USB

Device Driver” section on page C-3 for installation instructions.

When the switch detects a valid USB connection to a powered device, input from the Ethernet connection
is immediately disabled, and input from the USB console is enabled. Removing the USB connection
immediately reenables input from the Ethernet connection. An LED on the switch front panel (see
Figure 1-2) is green when the USB console connection is enabled.

Management Options

The switch provides a configurable inactivity timeout that reactivates the RJ-45 console if no input
activity has occurred on the USB console for a specified time period. After the USB console has been
deactivated due to a timeout, you can restore its operation by disconnecting and reconnecting the USB
cable. You can disable USB console operation by using Cisco IOS commands. See the switch software
configuration guide for details.

Management Options

• Cisco Network Assistant

Cisco Network Assistant is a PC-based network management GUI application for LANs. You can
use the GUI to configure and manage switch clusters or standalone switches. Cisco Network
Assistant is available at no cost and can be downloaded from this URL:

http://www.cisco.com/go/networkassistant

For information on starting the Network Assistant application, see the Getting Started with Cisco
Network Assistant guide on Cisco.com.

• Device manager

You can use the device manager in the switch memory to manage individual and standalone
switches. This web browser interface offers quick configuration and monitoring from anywhere in
your network. For information, see the switch getting started guide and the device manager online
help.

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Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

1-21

Management Options

Chapter 1 Product Overview

• Cisco IOS CLI

You can configure and monitor the switch and switch cluster members from the CLI. You can access
the CLI by connecting your management station directly to the switch console port or by using
Telnet from a remote management station. See the switch command reference on Cisco.com for
more information.

• CiscoWorks application

The CiscoWorks LAN Management Solution (LMS) is a suite of management tools that simplify the
configuration, administration, monitoring, and troubleshooting of Cisco networks. See the LMS
documentation for more information.

• SNMP network management

You can manage switches from a Simple Network Management Protocol (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. See the switch software configuration guide on Cisco.com and the
documentation that came with your SNMP application for more information.

Network Configurations

See 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.

1-22

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

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CHA P T ER

2

Switch Installation

This chapter describes how to install and connect a Catalyst 3750-X or a 3560-X switch. It also includes
planning and cabling considerations for stacking switches (only Catalyst 3750-X switches). Read the
topics and perform the procedures in this order:

• Preparing for Installation, page 2-1

• Planning a Switch Data Stack (Catalyst 3750-X Switches), page 2-4

• Planning a StackPower Stack (Catalyst 3750-X Switches), page 2-8

• Installing the Switch, page 2-14

• Connecting to the StackWise Ports (Catalyst 3750-X Switches), page 2-21

• Installing a Network Module in the Switch, page 2-23

• Installing SFP and SFP+ Modules, page 2-25

• Connecting Devices to the Ethernet Ports, page 2-27

• Where to Go Next, page 2-29

For initial switch setup, how to assign the switch IP address, and for powering information, see the
switch getting started guide on Cisco.com.

Preparing for Installation

• Safety Warnings, page 2-1

• Installation Guidelines, page 2-3

• Tools and Equipment, page 2-4

Safety Warnings

This section includes the basic installation caution and warning statements. Translations of the warning
statements appear in the Regulatory Compliance and Safety Information for the Catalyst

and

3560-X Switch document available at Cisco.com. Read this section before you start the installation

procedure.

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3750-X

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

2-1

Preparing for Installation

Chapter 2 Switch Installation

Warning

Warning

Warning

Warning

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

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

Voice over IP (VoIP) service and the emergency calling service do not function if power fails or is
disrupted. After power is restored, you might have to reset or reconfigure equipment to regain access
to VoIP and the emergency calling service. In the USA, this emergency number is 911. You need to be
aware of the emergency number in your country.

Statement 361

Warning

Warning

Warning

Warning

Warning

Warning

Do not work on the system or connect or disconnect cables during periods of lightning activity.

Statement 1001

Read the installation instructions before connecting the system to the power source.

Statement 1004

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

Use copper conductors only.

Statement 1025

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

2-2

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

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Chapter 2 Switch Installation

Preparing for Installation

Warning

Warning

Warning

Caution To comply with the Telcordia GR-1089 Network Equipment Building Systems (NEBS) standard for

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.

Installation of the equipment must comply with local and national electrical codes.

Statement 371—Power Cable and AC Adapter

Statement 1044

Statement 1074

electromagnetic compatibility and safety, connect the Ethernet cables only to intrabuilding or
nonexposed wiring or cabling.

Caution To comply with the Telcordia GR-1089 NEBS standard, PoE or non-PoE 10/100/1000 Ethernet port

cables that exit from either the left or right side of the switch should be routed and tied to the nearest
rack metal.

Note The grounding architecture of this product is DC-isolated (DC-I)

Installation Guidelines

Before installing the switch, verify that these guidelines are met:

• Clearance to front and rear panels is such that

–

Front-panel indicators can be easily read.

–

Access to ports is sufficient for unrestricted cabling.

–

AC power cord can reach from the AC power outlet to the connector on the switch rear panel.

–

The SFP or SFP+ module minimum bend radius and connector length is met. See the SFP or
SFP+ module documentation for more information.

• For switches with the optional 1100-W power-supply module (C3KX-PWR-1100WAC=), first

rack-mount the switch before installing the power-supply module.

• Make sure power-supply modules and fan modules are securely inserted in the chassis before

moving the switch.

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Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

2-3

Planning a Switch Data Stack (Catalyst 3750-X Switches)

• When connecting or disconnecting the power cord on a switch that is installed above or below a

1100-W power supply-equipped switch, you might need to remove the module from the switch to
access the power cord.

• Cabling is away from sources of electrical noise, such as radios, power lines, and fluorescent

lighting fixtures. Make sure that the cabling is safely away from other devices that might damage
the cables.

• For copper connections on Ethernet ports, cable lengths from the switch to connected devices can

be up to 328 feet (100

• For cable requirements for SFP+ module connections, see the “Cable and Adapter Specifications”

section on page B-5. Each port must match the wave-length specifications on the other end of the

cable, and the cable must not exceed the minimum cable length.

• Operating environment is within the ranges listed in Appendix A, “Technical Specifications.”

• Airflow around the switch and through the vents is unrestricted.

• Temperature around the unit does not exceed 113°F (45°C). If the switch is installed 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 system malfunction. You must install this equipment in an environment
as free from dust and foreign conductive material (such as metal flakes from construction activities)
as is possible.

Chapter 2 Switch Installation

meters).

These standards provide guidelines for acceptable working environments and acceptable levels of
suspended particulate matter:

–

Network Equipment Building Systems (NEBS) GR-63-CORE (only with the DC power supply)

–

National Electrical Manufacturers Association (NEMA) Type 1

–

International Electrotechnical Commission (IEC) IP-20

Tools and Equipment

You need to supply a number-2 Phillips screwdriver to rack-mount the switch. For connecting the
StackWise cables, you need a ratcheting torque screwdriver capable of 5 lbf-in. (80 ozf-in.).

Planning a Switch Data Stack (Catalyst 3750-X Switches)

Catalyst 3750-X switches can share bandwidth by using data stacking.

• Switch Data Stacking Guidelines, page 2-5

• Data Stack Cabling Configurations, page 2-5

• Data Stack Bandwidth and Partitioning Examples, page 2-7

• Installing the Switch, page 2-14

2-4

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

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Chapter 2 Switch Installation

Switch Data Stacking Guidelines

For general concepts and management procedures for switch stacks, see the switch software
configuration guide on Cisco.com. When adding a Catalyst
stack, review the Catalyst 3750-X Switch Stack Compatibility Guide on Cisco.com for information about
mixed stack configurations.

Before connecting the switches in a stack, keep in mind these stacking guidelines:

• Size of the switch and any optional power-supply module. The 1100-W power-supply module is

longer than the other modules. Stacking switches with the same power-supply modules together
makes it easier to cable the switches. For switch dimensions, see

Specifications.”

• Length of cable. Depending on the configurations that you have, you might need different-sized

cables. If you do not specify the length of the StackWise cable, the 0.5-meter cable is supplied. If
you need the 1-meter cable or the 3-meter cable, you can order it from your Cisco supplier. For cable
part numbers, see the

Configurations” section on page 2-5 provides examples of recommended configurations.

• For rack-mounted switch stacks connected to the XPS-2200, review this recommended sequence of

events:

–

If you are using the XPS-2200, install the XPS first at the bottom of the stack. If needed, allow
one RU space between the XPS and the first switch above to provide room for cabling.

–

Connect the 12-pin XPS cables to the XPS-2200.

“StackWise Ports” section on page 1-16. The “Data Stack Cabling

Data Stack Cabling Configurations

3750-X switch to a Catalyst 3750 switch

Appendix A, “Technical

–

Rack-mount the switches. If you have the optional 1100-W power-supply module, first mount
the switch before installing the power-supply module.

–

Connect the XPS cable to the first switch above the XPS-2200. Connect the stack cables to the
first switch above the XPS.

–

Connect the XPS cable to the second switch above the XPS-2200. Connect the stack cables to
the next switch above the XPS.

–

Repeat until all switches are connected.

• For rack-mounted switch stacks that are members of a StackPower stack as well as a data stack, see

the

“Planning a StackPower Stack (Catalyst 3750-X Switches)” section on page 2-8.

Data Stack Cabling Configurations

Figure 2-1 is an example of a recommended configuration that uses the supplied 0.5-meter StackWise

cable. In this example, the switches are stacked in a vertical rack or on a table. This configuration
provides redundant connections.

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Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

2-5

Data Stack Cabling Configurations

STAC K 1 STACK 2

STAC K 1 STACK 2

STAC K 1 STACK 2

STACK 1 STACK 2

STACK 1 STACK 2

STACK 1 STACK 2

STACK 1 STACK 2

STACK 1 STACK 2

STACK 1 STACK 2

STACK 1 STACK 2

STACK 1 STACK 2

STACK 1 STACK 2

STACK 1 STACK 2

STACK 1 STACK 2

STACK 1 STACK 2

STACK 1 STACK 2

STACK 1 STACK 2

STACK 1 STACK 2

STACK 1 STACK 2

STACK 1 STACK 2

STACK 1 STACK 2

253201

Chapter 2 Switch Installation

Figure 2-1 Data Stacking the Switches in a Rack or on a Table Using the 0.5-meter StackWise

Cable

STACK 1 STACK 2

STACK 1 STACK 2

STACK 1 STACK 2

STACK 1 STACK 2

STACK 1 STACK 2

STACK 1 STACK 2

STACK 1 STACK 2

STACK 1 STACK 2

STACK 1 STACK 2

253200

The configuration examples in Figure 2-2 use a 3-meter StackWise cable and the supplied 0.5-meter
StackWise cable. Both examples show full-ring configurations that provide redundant connections.

Figure 2-2 Data Stacking the Catalyst 3750-X Switches in a Rack or on a Table Using 0.5-meter

and 3-meter StackWise Cables

2-6

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

OL-19593-01

Chapter 2 Switch Installation

Figure 2-3 shows a recommended configuration when the switches are mounted side-by-side. Use the

1-meter and the 3-meter StackWise cables to connect the switches. This configuration provides
redundant connections.

Figure 2-3 Data Stacking up to Eight Switches in a Side-by-Side Mounting

Data Stack Bandwidth and Partitioning Examples

This section provides examples of data stack bandwidth and possible data stack partitioning.

Figure 2-4 shows a data stack of Catalyst 3750-X switches that provides full bandwidth and redundant

StackWise cable connections.

Figure 2-4 Example of a Data Stack with Full Bandwidth Connections

Data Stack Cabling Configurations

86825

STACK 1 STACK 2

1

STACK 1 STACK 2

STACK 1 STACK 2

2

3

253202

Figure 2-5 shows an example of a stack of Catalyst 3750-X switches with incomplete StackWise cabling

connections. This stack provides only half bandwidth and does not have redundant connections.

Figure 2-5 Example of a Data Stack with Half Bandwidth Connections

STACK 1 STACK 2

1

STACK 1 STACK 2

STACK 1 STACK 2

2

253203

Figure 2-6 and Figure 2-7 show data stacks of Catalyst 3750-X switches with failover conditions. In
Figure 2-6, the StackWise cable is bad in link 2. Therefore, this stack provides only half bandwidth and

does not have redundant connections. In Figure 2-7, link 2 is bad. Therefore, this stack partitions into
two stacks, and the top and bottom switches become stack masters.

Figure 2-6 Example of a Data Stack with a Failover Condition

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1

2

STACK 1 STACK 2

STACK 1 STACK 2

STACK 1 STACK 2

3

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Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

2-7

Planning a StackPower Stack (Catalyst 3750-X Switches)

STACK 1 STACK 2

STACK 1 STACK 2

STACK 1 STACK 2

253205

1

2

Figure 2-7 Example of a Partitioned Data Stack with a Failover Condition

Power On Sequence for Switch Data Stacks

Consider these guidelines before you power on the switches in a stack:

• The sequence in which the switches are first powered on might affect the switch that becomes the

stack master.

• 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
1

minute, power on the other switches in the stack.

Chapter 2 Switch Installation

• If you have no preference as to which switch becomes the stack master, power on all the switches in

the stack within 1 minute. These switches participate in the stack master election. Switches powered
on after 1 minute do not participate in the election.

• Power off a switch before you add it to or remove it from an existing switch stack.

For conditions that can cause a stack master re-election or to manually elect the stack master, see the
“Managing Switch Stacks” chapter in the switch software configuration guide on Cisco.com.

Planning a StackPower Stack (Catalyst 3750-X Switches)

Catalyst 3750-X switches can share power by using the StackPower feature.

• StackPower Stacking Guidelines, page 2-8

• StackPower Cabling Configurations, page 2-9

• Installing the Switch, page 2-14

StackPower Stacking Guidelines

You can configure a StackPower stack for either power sharing or redundancy. In power-sharing mode,
the power of all the power supplies in the stack is aggregated and distributed among the stack members.

In redundant mode, when the total power budget of the stack is calculated, the wattage of the largest
power supply is not included. That power is held in reserve and used to maintain power to switches and
attached devices when one power supply fails. Following the failure of a power supply, the StackPower
mode becomes power sharing.

2-8

Note Power-sharing mode is the recommended configuration for Catalyst 3750-X switches. The Catalyst

3560-X switches support only redundant mode.

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

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Chapter 2 Switch Installation

For general concepts and management procedures for switch power stacks, see the switch software
configuration guide on Cisco.com.

Before connecting the switches in a power stack, keep in mind these guidelines:

• A switch power stack can include a maximum of four switches in a ring topology and nine switches

• Size of the switch and any optional power supply module. The 1100-W power-supply module is

• Length of cable. Depending on the configurations that you have, you might need different-sized

• For rack-mounted switch stacks that are members of a data stack and a StackPower stack, see the

• For rack-mounted switch stacks connected to the XPS-2200, review this recommended sequence of

StackPower Cabling Configurations

in a star topology with the XPS-2200.

1.5

inches longer than the other modules, and with the attached cable retention clip, it extends

3

inches from the switch chassis. Stacking switches with the same power-supply modules together
makes it easier to cable the switches. For switch dimensions, see

Specifications.”

cables. If you do not specify the length of the StackPower cable, the 0.3 meter cable is supplied. If
you need the 1.5 meter cable, you can order it from your Cisco supplier. For cable part numbers, see
the

“StackPower Connector (Catalyst 3750-X Switches)” section on page 1-20. The “StackPower

Cabling Configurations” section on page 2-9 provides examples of recommended configurations.

“Switch Data Stacking Guidelines” section on page 2-5.

events:

–

If you are using the XPS-2200, first install the XPS at the bottom of the stack. If needed, allow
one RU space between the XPS and the first switch above to provide room for cabling.

Appendix A, “Technical

–

Connect all the 12-pin XPS cables to the XPS-2200 as needed.

–

Rack-mount the switches. If you have the optional 1100-W power-supply module, first
rack-mount the switch before installing the power-supply module.

–

Connect the XPS cable to the first switch above the XPS-2200. Connect the stack cables to the
first switch above the XPS.

–

Connect the XPS cable to the second switch above the XPS-2200. Connect the stack cables to
the second switch above the XPS.

–

Repeat until all devices are connected.

StackPower Cabling Configurations

This section describes the recommended cabling configurations for a StackPower stack. There are two
types of StackPower cables. The cable in
3750-X switch in a power stack or to an XPS-2200. The cable in Figure 2-9 connects a Catalyst 3750-X
or 3560-X switch to an XPS-2200.

Note All cable connectors are keyed and color-coded, as are the connections on the switches (See Figure 1-6

and Figure 1-7 on page 1-15).

Both cable types are available in two lengths.

Figure 2-8 connects a Catalyst 3750-X switch to another

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Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

2-9

StackPower Cabling Configurations

Ta b l e 2-1 StackPower Cables

Part Number Cable Type Length

CAB-SPWR-30CM Catalyst 3750-X StackPower cable 0.3 meter

CAB-SPWR-150CM Catalyst 3750-X StackPower cable 1.5 meter

Figure 2-8 StackPower Cable for Use Only with Catalyst 3750-X Switches

Chapter 2 Switch Installation

Ta b l e 2-2 XPS-2200 Cables

Part Number Cable Type Length

CAB-XPS-58CM XPS-2200 connector cable 0.58 meter

CAB-XPS-150CM XPS-2200 connector cable 1.5 meter

Figure 2-9 XPS-2200 Cable for Use with XPS-2200

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Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

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Chapter 2 Switch Installation

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You can configure a ring power stack or use the XPS-2200 to configure a star topology.

Figure 2-10 shows a ring configuration using both of the supplied 0.3-meter StackPower cables and one

1.5-meter cable. In these examples, the switches are stacked in a vertical rack or on a table.

StackPower Cabling Configurations

Figure 2-10 StackPower Ring Topology

OL-19593-01

Figure 2-11 shows nine switches connected to an XPS-2200 expandable power supply in a star topology.

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

2-11

StackPower Cabling Configurations

AC OK

C3KX-PWR-1100WAC

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CONSOLE

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253397

Figure 2-11 StackPower Star Topology Using the XPS-2200

Chapter 2 Switch Installation

2-12

Figure 2-12 shows a nine-switch data stack configured with three power stacks. A power stack can

include a maximum of four switches. You can configure multiple power stacks within a data stack, but
a power stack that spans multiple data stacks is not supported.

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

OL-19593-01

Chapter 2 Switch Installation

CONSOLE

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253398

253399

Figure 2-12 Power Stacking Catalyst 3750-X Switches within a Switch Data Stack

StackPower Cabling Configurations

OL-19593-01

Figure 2-13 and Figure 2-14 are examples of recommended configurations when the switches are

mounted side-by-side. Use the 1.5-meter StackPower cables to connect the switches. These
configurations provide redundant connections.

Figure 2-13 PowerStack: Four Switches in a Side-by-Side Mounting Configuration

Figure 2-14 Power Stacking within a Nine-Switch Data Stack in a Side-by-Side Mounting

Configuration

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

2-13

Installing the Switch

STACK 1 STACK 2

STACK 1 STACK 2

STACK 1 STACK 2

253402

1

2

StackPower Partitioning Examples

Figure 2-15 and Figure 2-16 show StackPower stacks of Catalyst 3750-X switches with failover

conditions. In Figure 2-15, the StackPower cable 2 is faulty. Therefore, this stack does not provide
redundancy.

Figure 2-15 Example of a StackPower Stack with a Failover Condition

Chapter 2 Switch Installation

STACK 1 STACK 2

STACK 1 STACK 2

STACK 1 STACK 2

In Figure 2-16, StackPower port B on the center switch has failed and this stack partitions into two
stacks. The top two switches share power, and the bottom switch is now a separate stack.

Figure 2-16 Example of a Partitioned StackPower Stack with a Failover Condition

Installing the Switch

• Rack-Mounting, page 2-14

• Table- or Shelf-Mounting, page 2-20

• After Installing the Switch, page 2-21

1

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253401

Rack-Mounting

2-14

The illustrations shown in this section show the Catalyst 3750-X-48 PoE switch as an example. You can
install the Catalyst

3750-X and 3560-X switches following the same procedures.

To install the switch in a 19-inch rack, follow the instructions described in this section.

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

OL-19593-01

Chapter 2 Switch Installation

Installing the Switch

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

Installing the switch in other rack types requires an optional bracket kit not included with the switch.

Figure 2-17 shows the standard 19-inch brackets and optional mounting brackets and part numbers.

OL-19593-01

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

2-15

Installing the Switch

253206

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Chapter 2 Switch Installation

Figure 2-17 Rack-Mounting Brackets

1 19-inch brackets, part number 700-29656-01

2 23-inch brackets, part number 700-31900-01

3 23/24-inch brackets, part number 700-31901-01

4 ETSI brackets, part number 700-31899-01

5 Extension rails and brackets for four-point mounting, kit part number 53-3408-01

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

2-16

OL-19593-01

Chapter 2 Switch Installation

5WAC

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Attaching the Rack-Mount Brackets

To install the switch in a rack, use four Phillips flat-head screws to attach the long side of the brackets
to the switch for the front- or rear-mounting positions (
brackets for the mid-mounting position.

Figure 2-18 Attaching Brackets for 19-inch Racks

Installing the Switch

Figure 2-18). Use three screws to attach the

OL-19593-01

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

2-17

Installing the Switch

1 Front-mounting position 4 Rear-mounting position

2 Number-8 Phillips flat-head screws 5 Four-point mounting positions

3 Mid-mounting position

Mounting the Switch in a Rack

After the brackets are attached to the switch, use the supplied Phillips machine screws to attach the
brackets to the rack (
left or right bracket.

When you complete the switch installation, see the “After Installing the Switch” section on page 2-21
for more information switch configuration.

Chapter 2 Switch Installation

Figure 2-19). Use the black Phillips machine screw to attach the cable guide to the

2-18

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

OL-19593-01

Chapter 2 Switch Installation

Catalyst 3750-X PoE+48

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Figure 2-19 Mounting the Switch in a Rack

Installing the Switch

OL-19593-01

1 Phillips machine screw, black 5 Mid-mounting position

2 Cable guide 6 Rear-mounting position

3 Front-mounting position 7 Four-point mounting position

4 Number-12 or number-10 Phillips machine

screws

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

2-19

Installing the Switch

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253209

1

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When you complete the switch installation, see the “After Installing the Switch” section on page 2-21
for more information about switch configuration.

Table- or Shelf-Mounting

To install the switch on a table or shelf, locate the adhesive strip with the rubber feet in the mounting-kit
envelope. Attach the four rubber feet to the recessed areas on the bottom of the chassis (See

Figure 2-20 Attaching the Adhesive Pads for Table- or Shelf-Mounting

Chapter 2 Switch Installation

Figure 2-20).

1 Adhesive pads

You can also attach the brackets for a 19-inch rack as shown in Figure 2-21 to secure the switch to a shelf
or table.

Figure 2-21 Using Brackets for Table- or Shelf-Mounting

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Catalyst 3750-X PoE+48

Caution Do not wall-mount the switch.

When you complete the switch installation, see the “After Installing the Switch” section on page 2-21

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for more information switch configuration.

2-20

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

OL-19593-01

Chapter 2 Switch Installation

RESET

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253210

Connecting to the StackWise Ports (Catalyst 3750-X Switches)

After Installing the Switch

After the switch is installed, you might need to:

• Configure the switch by running Express Setup to enter the initial switch configuration. For

instructions, see the switch getting started guide that shipped with the switch and also on Cisco.com.

• Use the CLI setup program to enter the initial switch configuration. See Appendix C, “Configuring

the Switch with the CLI-Based Setup Program.”

• Connect to the front-panel ports. See the “Installing a Network Module in the Switch” section on

page 2-23 and the “Connecting Devices to the Ethernet Ports” section on page 2-27.

Connecting to the StackWise Ports (Catalyst 3750-X Switches)

Before connecting the StackWise cables, review the “Planning a Switch Data Stack (Catalyst 3750-X

Switches)” section on page 2-4. Always use a Cisco-approved StackWise cable to connect the switches.

Step 1 Remove the dust covers from the StackWise cables and StackWise ports, and store them for future use.

Step 2 Use the window in the StackWise cable to align the connector correctly. Connect it to the StackWise port

on the switch rear panel (
to 5 lbf-in. (80 ozf-in.).

Step 3 Connect the other end of the cable to the connector on the other switch, and tighten the retainer screws

to 5 lbf-in. (80 ozf-in.). Avoid overtightening the screws.

Figure 2-22). Using a ratcheting torque screwdriver, tighten the retainer screws

Figure 2-22 Connecting the StackWise Cable in a StackWise Port

OL-19593-01

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

2-21

Chapter 2 Switch Installation

Connecting to the StackPower Ports (Catalyst 3750-X Switches)

Caution Removing and installing the StackWise cable can shorten its useful life. Do not remove and

insert the cable more often than is absolutely necessary.

When you need to remove the StackWise cable from the connector, make sure to fully unscrew the
correct screws. When the connectors are not being used, replace the dust covers.

Connecting to the StackPower Ports (Catalyst 3750-X Switches)

Before connecting the StackPower cables, review the “Planning a StackPower Stack (Catalyst 3750-X

Switches)” section on page 2-8. Always use a Cisco-approved StackPower cable to connect the switches.

To prevent misconfiguration, the StackPower ports on the switch and the XPS-2200 are keyed and have
colored stripes that match the keying and stripes on the StackPower cable connectors.

Follow these steps to connect the StackPower cable to the StackPower ports:

Step 1 Remove the dust covers from the StackPower cable connectors.

Step 2 Connect the end of the cable with a green stripe to either StackPower connector on the first switch. Align

the connector correctly, and connect the cable to a StackPower port on the switch rear panel.
(

Figure 2-23).

Step 3 Connect the end of the cable with the yellow stripe to another Catalyst 3750-X switch (to configure

StackPower power sharing) or to an XPS-2200 power supply (to configure redundancy).

Step 4 Hand-tighten the captive screws to secure the StackPower connectors in place.

Figure 2-23 Connecting the StackPower Cable to a StackPower Port

AC OK

253213

S-PWR

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S-PWR

AC OK

PS OK

3KX-PWR-715WAC

C

Caution Removing and installing the StackPower cable can shorten its useful life. Do not remove and

insert the cable more often than necessary.

2-22

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

OL-19593-01

Chapter 2 Switch Installation

Connecting the StackPower Ports to the XPS-2200

Connecting the StackPower Ports to the XPS-2200

Before connecting the StackPower cables, review the “Planning a StackPower Stack (Catalyst 3750-X

Switches)” section on page 2-8. Always use a Cisco-approved StackPower cable to connect the switches.

To prevent misconfiguration, the StackPower ports on the switch and the XPS-2200 are keyed and have
colored stripes that match the keying and stripes on the StackPower cable ends.

Step 1 Connect the end of the cable with a green stripe to the connector marked XPS on the switch. Align the

connector correctly, and insert the end of the cable with a green stripe into an XPS port on the switch
rear panel.

Step 2 Connect the end of the cable with a red or yellow stripe to an XPS-2200 power supply. (Figure 2-24)

Step 3 Hand-tighten the captive screws to secure the StackPower connectors in place.

Figure 2-24 Connecting the StackPower Cable to an XPS-2200 Port

-PWR

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Caution Removing and installing the StackPower cable can shorten its useful life. Do not remove and

insert the cable more often than necessary.

Installing a Network Module in the Switch

These sections describe how to install and remove 1-Gigabit Ethernet and 10-Gigabit Ethernet network
modules that provide uplink ports for the switch or the blank module, which provides no uplink ports.
See the

Note There must be a supported network module in the network module slot. If no uplink ports are required,

insert a blank network module. An empty slot generates error messages.

The network module is hot-swappable. If you remove a module, replace it with another network module.

“Network Modules” section on page 1-4.

OL-19593-01

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

2-23

Installing a Network Module in the Switch

Use only Cisco network modules and SFP or SFP+ modules with the switch. For information about
supported SFP modules, see the

For more information about installing, removing, cabling, and troubleshooting network modules, see the
module documentation on Cisco.com. For module cable specifications, see

Cable Specifications.”

Tools and Equipment

You need to supply a number-2 Phillips screwdriver.

Installing Network Modules

When installing network modules, observe these general precautions:

• Do not remove the EMC plug from the 10-Gigabit Ethernet slot until you are ready to install an SFP

or SFP+ module. Either a module or a dust plug must be installed in the slot at all times.

• Do not remove the dust plugs from the fiber-optic SFP modules or the rubber caps from the

fiber-optic cable until you are ready to connect the cable. The plugs and caps protect the module
ports and cables from contamination and ambient light.

• Removing and installing a network module can shorten its useful life. Do not remove and insert any

network module more often than necessary.

Chapter 2 Switch Installation

“SFP and SFP+ Modules” section on page 1-5.

Appendix B, “Connector and

• To prevent ESD damage, follow your normal board and component handling procedures when

connecting cables to the switch and other devices.

Step 1 Attach an ESD-preventive wrist strap to your wrist and to a bare metal surface.

Step 2 Remove the module from the protective packaging.

Step 3 Remove the 10-Gigabit Ethernet module slot EMC plug and save.

Caution Verify the correct orientation of your module before inserting it into the slot. Incorrect insertion can

damage the module.

Step 4 Position the module face up to install in the module slot. See Figure 2-25. Slide the module into the

opening until the back of the module faceplate is flush with the switch faceplate. Fasten the captive
screws to secure the network module in place.

Caution Do not insert or remove a network module with attached fiber-optic cables. A module interface might

change to an error-disabled state when a network module is inserted or removed with connected
fiber-optic cables. If the interface is in an error-disabled state, you can re-enable the interface by using
the shutdown and no shutdown interface configuration commands.

2-24

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

OL-19593-01

Chapter 2 Switch Installation

253156

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Figure 2-25 Installing the Network Module in the Switch

Caution Do not install the converter module with connected SFP modules or cables. Always remove any cables

and modules before installing the converter module in the slot.

Installing SFP and SFP+ Modules

Removing a Network Module

Step 1 Attach an ESD-preventive wrist strap to your wrist and to a bare metal surface.

Caution Do not remove the network module with installed SFP modules or cables. Always remove any cables

and modules before removing the network module from the slot.

Step 2 Disconnect the cables from the SFP module.

Step 3 Remove the SFP modules from the network module.

Step 4 Loosen the captive screws that hold the network module in place.

Step 5 Carefully press the tab on the right side of the network module to release it from the slot. Grasp the edges

of the module, and carefully slide it out of the slot.

Step 6 Install a replacement network module or a blank module in the slot.

Step 7 Place the module that you removed in an antistatic bag or other protective environment.

Installing SFP and SFP+ Modules

OL-19593-01

This section describes how to install and remove SFP modules in the network module.You must have a
network module installed in the switch to use SFP modules.

See the “SFP and SFP+ Modules” section on page 1-5 and the switch release notes on Cisco.com for the
list of SFP modules that the switch supports. Use only Cisco SFP modules on the switch.

For more information about installing, removing, cabling, and troubleshooting SFP modules, see the
module documentation that shipped with your device. For module cable specifications, see

Appendix B,

“Connector and Cable Specifications.”

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

2-25

Installing SFP and SFP+ Modules

Catalyst 3750-X PoE+48

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Installing an SFP Module

Observe these general precautions:

Chapter 2 Switch Installation

Warning

Class 1 laser product.

Statement 1008

• Do not remove the dust plugs from the SFP modules or the rubber caps from the fiber-optic cable

until you are ready to connect the cable. The plugs and caps protect the module ports and cables
from contamination and ambient light.

• Removing and installing an SFP module can shorten its useful life. Do not remove and insert any

SFP module more often than necessary.

• To prevent ESD damage, follow your normal board and component handling procedures when

connecting cables to the switch and other devices.

Caution To avoid damage to the network module, first install the network module in the switch before installing

the SFP modules. See the “Installing a Network Module in the Switch” section on page 2-23.

Step 1 Attach an ESD-preventive wrist strap to your wrist and to a bare metal surface.

Step 2 Find the send (TX) and receive (RX) markings that identify the top side of the SFP module.

On some SFP modules, the send and receive (TX and RX) markings might be replaced by arrows that
show the direction of the connection, either send or receive (TX or RX).

Step 3 If the SFP module has a bale-clasp latch, move it to the open, unlocked position.

Step 4 Align the module in front of the slot opening, and push until you feel the connector snap into place.

Figure 2-26 Installing an SFP Module in the Network Module

Step 5 If the module has a bale-clasp latch, close it to lock the SFP module in place.

Step 6 Remove the SFP dust plugs and save.

Step 7 Connect the SFP cables.

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

2-26

OL-19593-01

Chapter 2 Switch Installation

Catalyst 3750-X PoE+48

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Figure 2-27 Network Module with SFP Modules Installed

1 Network module 3 Send (TX) optical bore

2 SFP modules 4 Receive (RX) optical bore

Connecting Devices to the Ethernet Ports

Removing an SFP Module

Step 1 Attach an ESD-preventive wrist strap to your wrist and to a bare metal surface.

Step 2 Disconnect the cable from the SFP module. For reattachment, note which cable connector plug is send

(TX) and which is receive (RX).

Step 3 Insert a dust plug into the optical ports of the SFP module to keep the optical interfaces clean.

Step 4 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 finger to open it, use a small, flat-blade screwdriver or other
long, narrow instrument to open the bale-clasp latch.

Step 5 Grasp the SFP module, and carefully remove it from the module slot.

Step 6 Place the removed SFP module in an antistatic bag or other protective environment.

Connecting Devices to the Ethernet Ports

• 10/100/1000 Ethernet Port Connections, page 2-28

• PoE+ Port Connections, page 2-28

Caution Category 5e and Category 6 cables can store high levels of static electricity. Always ground the cables

to a suitable and safe earth ground before connecting them to the switch or other devices.

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Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

2-27

Connecting Devices to the Ethernet Ports

10/100/1000 Ethernet Port Connections

The 10/100/1000 Ethernet ports use RJ-45 connectors with Ethernet pinouts. The maximum cable length
is 328 feet (100 meters). The 100BASE-TX and 1000BASE-T traffic requires Category
or Category

The autonegotiation feature is enabled by default on the switch. At this setting, the switch ports
configure themselves to operate at the speed of attached device. If the attached device does not support
autonegotiation, you can explicitly set the switch port speed and duplex parameters. To maximize
performance, either let the ports autonegotiate both speed and duplex, or set the port speed and duplex
parameters on both ends of the connection.

For simplified cabling, the automatic medium-dependent interface crossover (auto-MDIX) feature is
enabled by default on the switch. With auto-MDIX enabled, the switch detects the required cable type
for copper Ethernet connections and configures the interface accordingly. Therefore, you can use either
a crossover or a straight-through cable for connections to a switch 10/100/1000 Ethernet port regardless
of the type of device on the other end of the connection.

See the switch software configuration guide or the switch command reference on Cisco.com for more
information about enabling or disabling autonegotiation and auto-MDIX.

If auto-MDIX is disabled, use the guidelines in Tab l e 2-3 to select the correct cable for connecting the
switch 10/100/1000 Ethernet ports to other devices. See the “Cable and Adapter Specifications” section

on page B-5 for cable-pinout descriptions.

6 UTP cable. The 10BASE-T traffic can use Category 3 or Category 4 cable.

Chapter 2 Switch Installation

5, Category 5e,

Ta b l e 2-3 Recommended Ethernet Cables (When Auto-MDIX is Disabled)

Device Crossover Cable

Switch to switch Yes No

Switch to hub Ye s No

Switch to computer or server No Yes

Switch to router No Ye s

Switch to IP phone No Ye s

1. 100BASE-TX and 1000BASE-T traffic requires twisted four-pair, Category 5, Category 5e, or
Category 6 cable. 10BASE-T traffic can use Category 3 or Category 4 cable.

PoE+ Port Connections

The 10/100/1000 PoE ports have the same autonegotiation settings and cabling requirements that are
described in the
PoE or PoE+ inline power.

PoE inline power supports devices compliant with the IEEE 802.3af standard, as well as prestandard
Cisco IP Phones and Cisco Aironet Access Points. Each port can deliver up to 15.4 W of PoE.

PoE+ inline power supports devices compliant with the IEEE 802.3at standard, by delivering up to 30 W
of PoE+ power per port to all switch ports.

See Table 1-17 on page 1-18 for the power supply modules required to support PoE and PoE+ on 24- and
48-port switches.

1

Straight-Through Cable

1

“10/100/1000 Ethernet Port Connections” section on page 2-28. These ports can provide

2-28

To access a PoE planning tool, use the Cisco Power Calculator available on Cisco.com:

http://tools.cisco.com/cpc/launch.jsp

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

OL-19593-01

Chapter 2 Switch Installation

You can use this application to calculate the power supply requirements for a specific PoE configuration.
Enter the number and types of powered devices that you plan to attach to the switch, and the calculator
shows the PoE or PoE+ power required and the system power consumption.

You must be a registered Cisco.com user to access the Cisco Power Calculator. If you do not have a user
ID or password, you can register:

http://tools.cisco.com/RPF/register/register.do

For more information about the required power-supply module and the PoE specifications, see the

“Power Supply Modules” section on page 1-17 and Appendix A, “Technical Specifications.”

Note 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.

Caution PoE faults are caused when noncompliant cabling or powered devices are connected to a PoE port. Use

only standard-compliant cabling to connect Cisco prestandard IP Phones, wireless access points, or
IEEE
from the network.

Where to Go Next

802.3af-compliant devices to PoE ports. A cable or device that causes a PoE fault must be removed

Warning

Warning

Voice over IP (VoIP) service and the emergency calling service do not function if power fails or is
disrupted. After power is restored, you might have to reset or reconfigure equipment to regain access
to VoIP and the emergency calling service. In the USA, this emergency number is 911. You need to be
aware of the emergency number in your country.

Voltages that present a shock hazard may exist on Power over Ethernet (PoE) circuits if
interconnections are made using uninsulated exposed metal contacts, conductors, or terminals.
Avoid using such interconnection methods, unless the exposed metal parts are located within a
restricted access location and users and service people who are authorized within the restricted
access location are made aware of the hazard. A restricted access area can be accessed only through
the use of a special tool, lock and key or other means of security.

Where to Go Next

If the default configuration is satisfactory, the switch does not need further configuration. You can use
any of these management options to change the default configuration:

• Start the device manager, which is in the switch memory, to manage individual and standalone

switches. This is an easy-to-use web interface that offers quick configuration and monitoring. You
can access the device manager from anywhere in your network through a web browser. For more
information, see the switch getting started guide and 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.

Statement 361

Statement 1072

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Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

2-29

Where to Go Next

Chapter 2 Switch Installation

• Use the CLI to configure the switch as a member of a cluster or as an individual switch from the

console. See the switch command reference on Cisco.com for information on using the CLI with the
switch.

• Start an SNMP application such as the CiscoView application.

2-30

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

OL-19593-01

Power Supply and Fan Module Installation

• Power Supply Module Overview, page 3-1

• Installation Guidelines, page 3-5

• Installing an AC Power Supply, page 3-6

• Installing a DC Power Supply, page 3-7

• Finding the Power Supply Module Serial Number, page 3-12

• Fan Module Overview, page 3-14

• Installing a Fan Module, page 3-15

• Finding the Fan Module Serial Number, page 3-15

Power Supply Module Overview

CHA P T ER

3

The switch operates with either one or two active power supply modules or with power supplied by an
expandable power supply, XPS-2200. A Catalyst 3750-X switch that is part of a StackPower stack
operates with power supplied by other stack switches.

You can use two AC modules, two DC modules, one AC and one DC module, or one module and a blank
cover.

All power supply modules have internal fans. All switches ship with a blank cover in the second power
supply slot.

The XPS-2200 operates in two modes:

• In StackPower mode, it supplies power to the switches in the power stack (only Catalyst 3750-X

switches with IP Base image).

• In expandable power supply mode, it supplies power to a switch when the switch power supply is

removed or fails. When you install or replace a power supply module, the switch software polls the
device. After polling, the power supply module provides power to the switch, and the XPS-2200 is
available to power other devices.

Table 3-1 describes the supported internal power supply modules.

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Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

3-1

Power Supply Module Overview

Ta b l e 3-1 Power Supply Module Part Numbers and Descriptions

Part Number Description

C3KX-PWR-1100WAC=
C3KX-PWR-1100WAC-JP=

C3KX-PWR-715WAC= 715-W AC power supply module

C3KX-PWR-350WAC= 350-W AC power supply module

C3KX-PWR-440WDC= 440-W DC power supply module

C3KX-PSBAY-BLNK Blank cover

1. This module is used only in Japan.

Ta b l e 3-2 Power Supply Modules Used with PoE and PoE+ Switch Models

Chapter 3 Power Supply and Fan Module Installation

1

1100-W AC power supply module

Power Supply Module

C3KX-PWR-1100WAC=
C3KX-PWR-1100WAC-JP=

48-Port

48-Port PoE+

1

Switch

Primary or spare Spare Spare Spare

2

24-Port PoE+
Switch

Non-PoE+
Switch

24-Port
Non-PoE+
Switch

C3KX-PWR-715WAC= Spare Primary or spare Spare Spare

C3KX-PWR-350WAC= Spare Spare Primary or spare Primary or spare

C3KX-PWR-440WDC= Primary or spare Primary or spare Primary or spare Primary or spare

C3KX-PSBAY-BLNK Blank module Blank module Blank module Blank module

1. For full 15.4W support on a 48-port PoE+ switch, you must use a C3KX-PWR-1100WAC power supply module.

2. This module is used only in Japan.

Ta b l e 3-3 Switch Power Supply Requirements for PoE and PoE+

PoE Option 24-Port Switch 48-Port Switch

PoE (up to 15.4 W per port) one 715-W power supply

one 1100-W power supply

two 440-W DC power supplies

PoE+ (up to 30 W per port) one 1100-W power supply one 1100-W power supply plus one

715-W power supply

or

two 1100-W power supplies

3-2

Note A 48-port switch with one 715-W power supply provides up to 7.7 W of PoE to all ports.

The 350-W and 715-W AC power supply modules are autoranging units that support input voltages
between 100 and 240 VAC. The 1100-W power supply module is an autoranging unit that supports input
voltages between 115 and 240 VAC. The 440-W DC power supply module has dual input feeds (A and
B) and supports input voltages between 36 and 72 VDC. The output voltage range is 51 to 57 V.

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

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Chapter 3 Power Supply and Fan Module Installation

AC OK

C3K

X

-PWR-1100WAC

P

S OK

253560

1

6

2

3

4

5

AC OK

C3KX-PWR-715WAC

P

S

OK

253561

1

6

2

3

4

5

Each AC power supply module has a power cord for connection to an AC power outlet. The 1100-W and
715-W modules use a 16-AWG cord (only North America). All other modules use an 18-AWG cord. The
DC power supply module must be wired to a DC power source.

Note Only the DC power module is NEBS-compliant.

Figure 3-1 to Figure 3-4 show the power supply modules.

Figure 3-1 1100-W AC Power Supply

Power Supply Module Overview

1 1100-W AC power supply module 4 AC power cord connector

2 AC OK LED 5 Release latch

3 PS OK LED 6 Power cord retainer

Figure 3-2 715-W AC Power Supply Module

1 715-W AC power supply module 4 AC power cord connector

2 AC OK LED 5 Release latch

3 PS OK LED 6 Power cord retainer

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

OL-19593-01

3-3

Power Supply Module Overview

AC OK

C3KX-PWR-350WAC

P

S

OK

207488

1

6

2

3

4

5

DC

OK

C3KX-PWR-440WDC

PS OK

253562

1

8

2

3

7

4

5 6 5 4

I

N

P

U

T

-

3

6

TO -

7

2

V

/

1

2

A

OUT

P

U

T

44W

M

AX

/2

2

A

9

Figure 3-3 350-W AC Power Supply Module

1 350-W AC power supply module 4 AC power cord connector

2 AC OK LED 5 Release latch

3 PS OK LED 6 Power cord retainer

Chapter 3 Power Supply and Fan Module Installation

Figure 3-4 440-W DC Power Supply Module

1 440-W DC power supply module 6 Grounding terminal

2 DC OK LED 7 Release latch

3 PS OK LED 8 Extraction handle

4 Input power terminals (positive polarity) 9 Terminal block safety cover

5 Input power terminals (negative polarity)

If no power supply is installed in a power supply slot, install a power supply slot cover (Figure 3-5).

3-4

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

OL-19593-01

Chapter 3 Power Supply and Fan Module Installation

Figure 3-5 Power Supply Slot Cover

Installation Guidelines

2

1

253564

1 Release handles 2 Retainer clips

The power supply modules have two status LEDs.

Ta b l e 3-4 Switch Power Supply Module LEDs

AC Power Supply Module LEDs

AC OK Description PS OK Description

Off
(AC LED is

No AC input power. Off Output is disabled, or input is

outside operating range.

off)

Green AC input power present. Green Power output to switch.

Red Output has failed.

DC Power Supply Module LEDs

DC OK Description PS OK Description

Off
(DC LED is

No DC input power. Off Output is disabled, or input is

outside operating range.

off)

Green DC input power present. Green Power output to switch.

Red Output has failed.

Installation Guidelines

Table 1-16 lists the switches and the compatible power-supply modules. Observe these guidelines when

removing or installing a power supply or fan module:

• Do not force the power supply or fan module into the slot. This can damage the pins on the switch

if they are not aligned with the module.

• A power supply or fan module that is only partially connected to the switch can disrupt the system

operation.

• Remove power from the power-supply module before removing or installing the module.

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Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

3-5

Installing an AC Power Supply

• You can remove and replace the power supply when the switch is connected to an XPS-2200 without

Caution Do not operate the switch with one power-supply module slot empty. For proper chassis cooling, both

module slots must be populated, with either a power supply or a blank module.

Chapter 3 Power Supply and Fan Module Installation

interrupting normal switch operation. After a delay of about 3 seconds, the switch power supply
automatically provides power, and the XPS-2200 is available to power other devices.

Warning

Warning

Warning

Blank faceplates and cover panels serve three important functions: they prevent exposure to
hazardous voltages and currents inside the chassis; they contain electromagnetic interference (EMI)
that might disrupt other equipment; and they direct the flow of cooling air through the chassis. Do not
operate the system unless all cards, faceplates, front covers, and rear covers are in place.

Statement 1029

• The switch supports hot swapping of a fan module. When replacing a fan, you should complete the

replacement procedure within 5 minutes to avoid overheating the switch.

• The switch continues to operate when there is one failed chassis cooling fan. If one fan fails, the

switch sends an error message. If a second fan fails, the switch sends an error message, writes a
failure log to flash memory, and shuts down.

• Make sure that all power supply and fan modules are securely seated before moving the switch.

• When replacing the 1100-W or 715-W power supply, verify that you are using the correct power cord

(CAB-16AWG-AC, only in North America).

Do not reach into a vacant slot or chassis while you install or remove a module or a fan. Exposed
circuitry could constitute an energy hazard.

Only trained and qualified personnel should be allowed to install, replace, or service this equipment.

Statement 1030

Statement 206

Statement 371—Power Cable and AC Adapter

Installing an AC Power Supply

Step 1 Turn off the power at its source.

Step 2 Remove the power cord from the power cord retainer.

Step 3 Remove the power cord from the power connector.

Step 4 Press the release latch at the right side of the power supply module inward and slide the power supply

out. (

Figure 3-6).

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

3-6

OL-19593-01

Chapter 3 Power Supply and Fan Module Installation

R

E

S

ET

C

ONSOLE

STACK 1

STACK 2

S-PWR

XPS

AUX

A

C

OK

C3K

X

-P

WR-715WAC

P

S

OK

S-PWR

253159

A

C

OK

C3K

X

-P

WR-715W

AC

PS

O

K

Caution Do not leave the power-supply slot open for more than 90 seconds while the switch is operating.

Step 5 Insert the new power supply into the power-supply slot, and gently push it into the slot (Figure 3-6).

When correctly inserted, the 350-W and 715-W power supplies (excluding the power cord retainer) are
flush with the switch rear panel. The 1100-W power-supply module extends 1.5 inches from the switch
rear panel.

Figure 3-6 Inserting the AC-Power Supply in the Switch

Installing a DC Power Supply

Step 6 (Optional) Make a loop in the power cord and thread it through the power cord retainer (Figure 3-7).

Figure 3-7 AC-Power Supply with Power Cord Retainer

C OK

C3KX-PWR-715WAC

OK

PS

C OK

A

A

Step 7 Connect the power cord to the power supply and to an AC power outlet. Turn on the power at the power

source.

Step 8 Confirm that the power supply AC OK and PS OK LEDs are green. See Table 1-18 for a description of

the power supply module LEDs.

Installing a DC Power Supply

• Equipment That You Need, page 3-8

• Grounding the Switch, page 3-9

PS OK

3KX-PWR-715WAC

C

253160

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• Installing the DC Power Supply in the Switch, page 3-10

• Wiring the DC Input Power Source, page 3-11

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

3-7

Installing a DC Power Supply

Chapter 3 Power Supply and Fan Module Installation

Warning

Warning

Warning

Warning

Note The grounding architecture of this product is DC-isolated (DC-I)

An exposed wire lead from a DC-input power source can conduct harmful levels of electricity. Be sure
that no exposed portion of the DC-input power source wire extends from the terminal block plug.

Statement 122

Before connecting or disconnecting ground or power wires to the chassis, ensure that power is
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. Use a voltmeter to test for 0 (zero) voltage at the
power terminals on the chassis.

This product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that
the protective device is rated not greater than: 20 A.

A readily accessible two-poled disconnect device must be incorporated in the fixed wiring.

Statement 1022

Statement 196

Statement 1005

Equipment That You Need

• Ratcheting torque screwdriver with a number-2 Phillips head that exerts up to 15 pound-force inches

(lbf-in.) of pressure.

• Panduit crimping tool with optional controlled-cycle mechanism (model CT-720, CT-920,

CT-920CH, CT-930, or CT-940CH).

• Wire-stripping tools.

• 12-gauge copper ground wire (insulated or not) for the single-ground connection.

• 8-gauge copper ground wire (insulated or not) for the dual-ground connection.

• Ground lug screw and ring lug connector in the switch accessory kit. For a dual-ground connection,

also use the dual-ground adaptor and dual lug connector from the DC power supply accessory kit.

• Four leads of 14-gauge copper wire.

• Four fork-type terminals from the DC power supply accessory kit. The terminals must be the proper

size for M3 screws in a Dinkle DT-35-B25-style terminal block.

3-8

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

OL-19593-01

Chapter 3 Power Supply and Fan Module Installation

Insulation

Wire lead

0.5 in. (12.7 mm) ± 0.02 in. (0.5 mm)

60528

200044

Grounding the Switch

Follow the grounding procedures at your site and observe these warnings:

Installing a DC Power Supply

Warning

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.

Warning

Caution Follow the grounding procedure instructions, and use a UL-listed lug (included in the accessory kit).

When installing or replacing the unit, the ground connection must always be made first and
disconnected last.

Statement 1046

Statement 1024

Follow these steps to install either a single-ground lug or a dual-ground lug on the switch. Make sure to
follow any grounding requirements at your site.

Step 1 Use the ground lug screw and the lug ring for a single-ground connection. Use the dual-ground adaptor

and dual-hole lug for a dual-ground connection.

Step 2 Strip the 12-gauge or 8-gauge ground wire to 0.5 inch (12.7 mm) ± 0.02 inch (0.5 mm) (Figure 3-8).

Stripping more than the recommended amount of wire can leave exposed wire from the connector. Use
12-gauge copper ground wire for the single-ground connection. Use 8-gauge copper ground wire for the
dual-ground connection.

Figure 3-8 Stripping the Ground Wire

Step 3 Slide the open end of the ground lug over the exposed area of the wire.

Step 4 Using a Panduit crimping tool, crimp the ground lug to the wire (Figure 3-9).

Figure 3-9 Crimping the Ground Lug

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Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

3-9

Installing a DC Power Supply

RESET

CONSOLE

STACK 1

STACK 2

AUX

RESET

CONSOLE

STACK 1

STACK 2

AUX

253161

2

1

Step 5 Use the ground screw to attach the single-ground lug to the switch rear panel. Use two ground screws to

attach the dual-hole lug to the switch rear panel (

Step 6 Using a ratcheting torque screwdriver, torque the ground-lug screws to 60 lbf-in. (960 ozf-in.).

Step 7 Connect the other end of the grounding wire to an appropriate grounding point at your site or to the rack.

Figure 3-10 Attaching the Ground Lug and Wire Assembly

Chapter 3 Power Supply and Fan Module Installation

Figure 3-10).

1 Single-ground screw and lug ring 2 Dual-ground adaptor and dual-hole lug

Installing the DC Power Supply in the Switch

See the Installation Guidelines, page 3-5.

Step 1 Turn off DC power. To ensure that power is off, change the circuit breakers to the OFF position, and tape

Step 2 Remove the plastic safety cover from the power supply terminal blocks (Figure 3-4).

Step 3 Use a number-2 Phillips screwdriver to remove the DC-input power wires from the power terminals.

Step 4 Press the release latch at the right side of the power supply module inward, and pull the power supply out.

Step 5 Insert the power supply in the power-supply slot, and gently push it into the slot (Figure 3-11). When

the circuit-breaker switches in the OFF position.

If you are not replacing a DC power supply, go to Step 5.

correctly installed, the DC power supply (excluding the extraction handle) is flush with the switch rear
panel.

3-10

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

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Chapter 3 Power Supply and Fan Module Installation

RES

ET

CON

SOLE

STACK 1

STACK 2

A

U

X

A

C

OK

C

3K

X

-P

WR-4

4

0WDC

PS

OK

S-PWR

XPS

S

-

PW

R

253211

AC OK

C

3K

X

-P

WR-4

4

0WDC

PS

OK

Figure 3-11 Inserting the DC Power Supply in the Switch

Step 6 Connect the input power as described in the “Wiring the DC Input Power Source” section.

Wiring the DC Input Power Source

Installing a DC Power Supply

Step 1 Using a wire-stripping tool, strip each of the four wires from the DC-input power source to the

appropriate length for the terminals.

Warning

Step 2 Using a Panduit crimping tool, crimp the fork-type terminals to the copper conductor, 90C, 14-AWG DC

Use copper conductors only.

Statement 1025

power input wires.

Step 3 Connect the DC-input power terminals to the terminal blocks. See Figure 3-12 or Figure 3-13. Make sure

to match the polarity (negative to negative, positive to positive) when connecting the wires to the
terminal blocks. Connect the ground wire to a grounded metal rack or to earth ground if the switch is not
in a grounded rack.

Figure 3-12 DC Source A Isolated From Source B with No Common Ground

A+

A-

-

+

B-

B+

253447

-

+

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Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

3-11

Finding the Power Supply Module Serial Number

Figure 3-13 DC Source A and Source B Connections with Common Ground

Chapter 3 Power Supply and Fan Module Installation

A+

A-

-

+

B-

B+

253446

-

+

Step 4 Torque all terminal block screws to 11 lbf-in.

Step 5 Replace the terminal block safety cover.

Step 6 Move the DC power source circuit-breakers to the ON position.

Step 7 Confirm that the power-supply DC OK and PS OK LEDs are green. See Tab le 3-4 for a description of

the module LEDs.

Finding the Power Supply Module Serial Number

If you contact Cisco Technical Assistance regarding a power supply module, you need to know the serial
number. See

Figure 3-14 to Figure 3-16 to find the serial number.

Figure 3-14 1100-W AC Power Supply Serial Number

SN: XXXNNNNXXXX

C

3

K

X

-

PWR

-

1

1

00WA

C

277563, 781-00669-01

3-12

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

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Chapter 3 Power Supply and Fan Module Installation

277561, 781-00668-01

SN: XXXNNNNXXXX

C3KX-PWR-7

1

5WA

C

Figure 3-15 715-W and 350-W AC Power Supply Module Serial Number

Finding the Power Supply Module Serial Number

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3-13

Fan Module Overview

253565

1

3

4

2

Chapter 3 Power Supply and Fan Module Installation

Figure 3-16 440-W DC Power Supply Module Serial Number

SN: XXXNNNNXXXX

277562, 781-00667-01

C

3KX-PWR

-

4

4

0WDC

Fan Module Overview

The switch has two fan modules. Each fan module contains two fans. Fan modules are hot-swappable.

Figure 3-17 Fan Module

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

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Chapter 3 Power Supply and Fan Module Installation

R

E

S

ET

C

ONSOLE

STACK 1

STACK 2

A

U

X

A

C

OK

C3K

X

-P

WR

-715W
AC

PS

OK

A

C

OK

C3K

X

-P

WR-715W

AC

PS

OK

S-PWR

XPS

S

-

PW

R

253162

1 Fan LED 3 Retainer clip

2 Exhaust vent 4 Extraction handles

Installing a Fan Module

Note There must be a fan module in both fan module slots.

Step 1 Pinch the fan release handle, and slide the fan out.

Caution You should replace a failed fan module within 5 minutes to avoid overheating the switch.

Step 2 Insert the new fan module into the fan slot, and firmly push the module) into the slot, applying pressure

to the end of the module, not the extraction handles (
module is flush with the switch rear panel. When the fan is operating, a green LED is on in the top left
corner of the fan.

Installing a Fan Module

Figure 3-18). When correctly inserted, the fan

Warning

Do not reach into a vacant slot or chassis while you install or remove a module or a fan. Exposed
circuitry could constitute an energy hazard.

Statement 206

Figure 3-18 Inserting the Fan Module in the Switch

Finding the Fan Module Serial Number

If you contact Cisco Technical Assistance regarding a fan module, you need to know the fan module
serial number. See

Figure 3-19 for the serial number location.

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Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

3-15

Finding the Fan Module Serial Number

Figure 3-19 Fan Module Serial Number

SN: XXXNNNNXXXX

Chapter 3 Power Supply and Fan Module Installation

277564, 781-00666-01

3-16

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

OL-19593-01

Troubleshooting

• Diagnosing Problems, page 4-1

• Resetting the Switch to the Factory Default Settings, page 4-5

• Finding the Switch Serial Number, page 4-6

• Replacing a Failed Data Stack Member (Catalyst 3750-X Switches), page 4-6

Diagnosing Problems

The switch LEDs provide troubleshooting information about the switch. They show POST failures,
port-connectivity problems, and overall switch performance. You can also get statistics from the device
manager, the CLI, or an 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.

CHA P T ER

4

Switch POST Results

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. It might take several minutes for the switch to complete
POST.

When the switch begins POST, the Status LED turns green. The System LED blinks green, and the other
LEDs stay green.

When POST completes successfully, the System LED remains green. The XPS LED is green for some
time and then returns to its operating status. The other LEDs turn off and return to their operating status.
If the switch fails POST, the System and Ethernet management port LEDs turn amber.

Note POST failures are usually fatal. Contact your Cisco technical support representative if your switch does

not pass POST.

Switch LEDs

Look at the port LEDs for information when troubleshooting the switch. See the “LEDs” section on

page 1-8 for descriptions of the LED colors and their meanings.

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Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

4-1

Diagnosing Problems

Switch Connections

Bad or Damaged Cable

Always examine the cable for marginal damage or failure. A cable might be just good enough to connect
at the physical layer, but it could corrupt packets as a result of subtle damage to the wiring or connectors.
You can identify this situation because the port has many packet errors or the port constantly flaps (loses
and regains link).

• Exchange the copper or fiber-optic cable with a known good cable.

• Look for broken or missing pins on cable connectors.

• Rule out any bad patch panel connections or media convertors between the source and destination.

If possible, bypass the patch panel or eliminate media convertors (fiber-optic-to-copper).

• Try the cable in another port to see if the problem follows the cable.

• Catalyst 3750-X switch StackWise cable: remove and inspect the cable and StackWise port for bent

pins or damaged connectors. If the StackWise cable is bad, replace it with a known good cable.

Chapter 4 Troubleshooting

Ethernet and Fiber Cables

Make sure that you have the correct cable:

• For Ethernet, use Category 3 copper cable for 10 Mbps UTP connections. Use either Category 5,

Category 5e, or Category 6 UTP for 10/100 or 10/100/1000 Mbps connections.

• Verify that you have the correct fiber-optic cable for the distance and port type. Make sure that the

connected device ports match and use the same type encoding, optical frequency, and fiber type. For
more information about cabling, see the

page B-5.

• Determine if a copper crossover cable was used when a straight-through was required, or the reverse.

Enable auto-MDIX on the switch, or replace the cable. See
cables.

Link Status

Verify that both sides have link. A broken wire or a shut down port can cause one side to show link even
though the other side does not have link.

A port LED that is on does not guarantee that the cable is functional. It might have encountered physical
stress, causing it to function at a marginal level. If the port LED does not turn on:

• Connect the cable from the switch to a known good device.

• Make sure that both ends of the cable are connected to the correct ports.

• Verify that both devices have power.

• Verify that you are using the correct cable type. See Appendix B, “Connector and Cable

Specifications” for more information.

“SFP and SFP+ Module Cable Specifications” section on

Table 2-3 for recommended Ethernet

4-2

• Look for loose connections. Sometimes a cable appears to be seated but is not. Disconnect the cable

and then reconnect it.

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

OL-19593-01

Chapter 4 Troubleshooting

10/100/1000 Port Connections

A port appears to malfunction:

• Verify the status of all ports. See Tab l e 1-8 on page 1-10 for descriptions of the LEDs and their

meanings.

• Use the show interfaces privileged EXEC command to see if the port is error-disabled, disabled, or

shut down. Re-enable the port if necessary.

• Verify the cable type. See Appendix B, “Connector and Cable Specifications.”

PoE Port Connections

A powered device connected to a PoE port does not receive power:

• Verify the status of all ports. See Tab l e 1-9 and Tab l e 1-13 for descriptions of the LEDs and their

meanings.

• Use the show interfaces privileged EXEC command to see if the port is error-disabled, disabled, or

shut down. Re-enable the port if necessary.

• Verify that the power supply installed in the switch meets the power requirements of your connected

devices. See the

• Verify the cable type. Many legacy powered devices, including older Cisco IP phones and access

points that do not fully support IEEE
by a crossover cable. Replace the crossover cable with a straight-through cable.

Diagnosing Problems

“Power Supply Modules” section on page 1-17 for more information.

802.3af might not support PoE when connected to the switch

Caution Noncompliant cabling or powered devices can cause a PoE port fault. Use only compliant cabling to

Note The output of the PoE circuit has been evaluated as a limited power source (LPS) per IEC 60950.

SFP Modules

connect Cisco prestandard IP phones, wireless access points, or IEEE 802.3af-compliant devices.

Use only Cisco network modules and SFP modules.

• Inspect the network module and SFP module. Exchange the suspect module with a known good

module.

• Verify that the module is supported on this platform. (The switch release notes on Cisco.com list the

SFP and SFP+ modules that the switch supports.)

• Use the show interfaces privileged EXEC command to see if the port or module is error-disabled,

disabled, or shut down. Re-enable the port if needed.

• Make sure that all fiber connections are clean and securely connected.

• For CX1 module connections, make sure that cable routing does not violate the minimum allowed

cable bend radius. See the module documentation for specific cabling requirements.

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Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

4-3

Diagnosing Problems

Interface Settings

Ping End Device

Chapter 4 Troubleshooting

Note When ordering or using CX1 cables, ensure that the version identifier is 2 or higher.

• For long wave SFP+ modules, a mode conditioning patch might improve performance over

maximum link distances with MMF connections.

Verify that the port or interface is not disabled or powered off. If a port or interface is manually shut
down on either side of the link, it does not come up until you re-enable the interface. Use the show
interfaces privileged EXEC command to see if the interface is error-disabled, disabled, or shut down on
either side of the connection. If needed, re-enable the interface.

Ping from the directly connected switch first, and then work your way back port by port, interface by
interface, trunk by trunk, until you find the source of the connectivity issue. Make sure that each switch
can identify the end device MAC address in its Content-Addressable Memory (CAM) table.

Spanning Tree Loops

STP loops can cause serious performance issues that look like port or interface problems.

A unidirectional link can cause loops. It occurs when the traffic sent by the switch is received by the
neighbor, but the traffic from the neighbor is not received by the switch. A broken cable, other cabling
problems, or a port issue could cause this one-way communication.

You can enable UniDirectional Link Detection (UDLD) on the switch to help identify unidirectional link
problems. For information about enabling UDLD on the switch, see the “Understanding UDLD” section
in the software configuration guide on Cisco.com.

Switch Performance

Speed, Duplex, and Autonegotiation

Port statistics that show a large amount of alignment errors, frame check sequence (FCS), or
late-collisions errors, might mean a speed or duplex mismatch.

A common issue occurs when duplex and speed settings are mismatched between two switches, between
a switch and a router, or between the switch and a workstation or server. Mismatches can happen when
manually setting the speed and duplex or from autonegotiation issues between the two devices.

To maximize switch performance and to ensure a link, follow one of these guidelines when changing the
duplex or the speed settings:

• Let both ports autonegotiate both speed and duplex.

• Manually set the speed and duplex parameters for the interfaces on both ends of the connection.

4-4

• If a remote device does not autonegotiate, use the same duplex settings on the two ports. The speed

parameter adjusts itself even if the connected port does not autonegotiate.

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

OL-19593-01

Chapter 4 Troubleshooting

Resetting the Switch to the Factory Default Settings

Autonegotiation and Network Interface Cards

Problems sometimes occur between the switch and third-party network interface cards (NICs). By
default, the switch ports and interfaces autonegotiate.Laptops or other devices are commonly set to
autonegotiate, yet sometimes issues occur.

To troubleshoot autonegotiation problems, try manually setting both sides of the connection. If this does
not solve the problem, there could be a problem with the firmware or software on the NIC. You can
resolve this by upgrading the NIC driver to the latest version.

Cabling Distance

If the port statistics show excessive FCS, late-collision, or alignment errors, verify that the cable distance
from the switch to the connected device meets the recommended guidelines. See the

Specifications” section on page B-5.

Resetting the Switch to the Factory Default Settings

“Cable and Adapter

If you have configured a new switch with a wrong 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.

Note Resetting the switch deletes the configuration and reboots the switch.

To reset the switch:

1. Press and hold the Mode button (Figure 1-1 on page 1-3).

The switch LEDs begin blinking after about 2 seconds. If the LEDs above the mode button turn solid
green, you can release the Mode button and run Express Setup to configure the switch. If the LEDs
do not turn solid green, continue with the next step.

2. Continue holding down the Mode button. The LEDs stop blinking after an additional 8 seconds, and

then the switch reboots.

The switch now behaves like an unconfigured switch. You can configure the switch by using Express
Setup as described in the switch getting started guide on Cisco.com.

You can also configure the switch by using the CLI setup procedure. See Appendix C, “Configuring the

Switch with the CLI-Based Setup Program.”

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Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

4-5

Finding the Switch Serial Number

RESET

CONSOLE

STACK 1

STACK 2

S-PWR

RPS

S-PWR

AUX

AC OK

C3K-PWR-235WAC

PS OK

AC OK

C3K-PWR-235WAC

PS OK

253192, 781-00659-01 A0

SN: XXXNNNNXXXX

Finding the Switch Serial Number

If you contact Cisco Technical Assistance, you need to know the switch serial number. Figure 4-1 shows
the serial number location. You can also use the show version privileged EXEC command to see the
switch serial number.

Figure 4-1 Switch Serial Number Location

Chapter 4 Troubleshooting

Replacing a Failed Data Stack Member (Catalyst 3750-X Switches)

To replace a failed data stack member:

1. The replacement switch must be a Catalyst 3750-X switch.

2. Power down the failed switch. Remove AC or DC input power, and if the switch is part of a

StackPower stack, remove the StackPower cables.

3. Make sure the replacement switch is powered off, and then connect it to the stack.

If you had manually set the member numbers for the switch stack, manually assign the member
number of the failed switch to the replacement switch. To manually assign the stack member
number, see the switch software configuration guide on Cisco.com.

4. Make the same Gigabit Ethernet connections on the replacement switch that were on the failed

switch.

5. Reinstall any modules and cable connections.

6. Power on the replacement switch.

The replacement switch will have the same configuration for all the interfaces as the failed switch and
will function the same as the failed switch.

4-6

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

OL-19593-01

Technical Specifications

• Switch Specifications, page A-1

• Power Supply Module Specifications, page A-2

• Fan Module Specifications, page A-4

Switch Specifications

Ta b l e A-1 Environmental and Physical Specifications

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), NEBS up to 13,000 ft (4000 m)

Physical Specifications

APPENDIX

A

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Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

A-1

Power Supply Module Specifications

Table A-1 Environmental and Physical Specifications (continued)

Weight

Catalyst 3750-X-24T
Catalyst 3750-X-24P
Catalyst 3750-X-48T
Catalyst 3750-X-48P
Catalyst 3750-X-48PF
Catalyst 3560-X-24T
Catalyst 3560-X-24P
Catalyst 3560-X-48T
Catalyst 3560-X-48P
Catalyst 3560-X-48PF

Dimensions (H x W x D)

Catalyst 3750-X and 3560-X-24T
Catalyst 3750-X and 3560-X-24P
Catalyst 3750-X and 3560-X-48T
Catalyst 3750-X and 3560-X-48P

Catalyst 3750-X and 3560-X-48PF

Appendix A Technical Specifications

15.6 lb (7.1 kg)

15.8 lb (7.2 kg)

16.3 lb (7.4 kg)

16.5 lb (7.5 kg)

16.7 lb (7.6 kg)

15.4 lb (7.0 kg)

15.7 lb (7.1 kg)

16.1 lb (7.3 kg)

16.4 lb (7.4 kg)

16.6 lb (7.5 kg)

1.75 x 17.5 x 18.0 in. (4.45 x 44.5 x 46.0 cm)

1.75 x 17.5 x 18.0 in. (4.45 x 44.5 x 46.0 cm)

1.75 x 17.5 x 18.0 in. (4.45 x 44.5 x 46.0 cm)

1.75 x 17.5 x 18.0 in. (4.45 x 44.5 x 46.0 cm)

1.75 x 17.5 x 19.5 in. (4.45 x 44.5 x 49.5 cm)

1

2

1

2

3

1

2

1

2

3

Note The C3KX-PWR-1100 W AC power supply extends

1.5 in. (3.8 cm) beyond the switch chassis.

1. With C3KX-PWR-350-W AC power supply

2. With C3KX-PWR-715-W AC power supply

3. With C3KX-PWR-1100-W AC power supply

Power Supply Module Specifications

Ta b l e A-2 Environmental and Physical Specifications for the AC- and DC-Power Supply

Modules

Environmental Ranges

Operating temperature 23 to 113° F (–5 to 45° C)

Storage temperature –40 to 158° F (–40 to 70° C)

Relative humidity 10 to 95% (noncondensing)

Altitude Up to 10,000 ft (3049 m)

Physical Specifications

A-2

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

OL-19593-01

Appendix A Technical Specifications

Table A-2 Environmental and Physical Specifications for the AC- and DC-Power Supply Modules

Weight

C3KX-PWR-1100WAC

C3KX-PWR-715WAC

Power Supply Module Specifications

(continued)

3 lb (1.4 kg)

2.8 lb (1.3 kg)

C3KX-PWR-350WAC

C3KX-PWR-440WDC

2.7 lb (1.2 kg)

3.5 lb (1.6 kg)

Dimensions (H x D x W)

C3KX-PWR-1100WAC

C3KX-PWR-715WAC

C3KX-PWR-350WAC

C3KX-PWR-440WDC

1.38 x 11.72 x 3.25 in. (3.5 x 29.8 x 8.3 cm)

1.38 x 10.22 x 3.25 in. (3.5 x 26 x 8.3 cm)

1.38 x 10.22 x 3.25 in. (3.5 x 26 x 8.3 cm)

1.38 x 10.22 x 3.25 in. (3.5 x 26 x 8.3 cm)

Note Dimensions shown exclude the attached power cord

retainer (AC power supplies) or the extraction handle
(DC power supplies), which measures 1.55
(3.9

cm).

Ta b l e A-3 Power Specifications for AC Power 24- and 48-Port Switches

in.

Power Specifications

Maximum output power C3KX-PWR-1100WAC: 1100 W

C3KX-PWR-715WAC: 715 W
C3KX-PWR-350WAC: 350 W

Input voltage range and frequency C3KX-PWR-1100WAC: 1100-W, 115 to 240 VAC (autoranging)

50 to 60 Hz
C3KX-PWR-715WAC: 715 W, C3KX-PWR-350WAC: 350 W,
100 to 240 VAC (autoranging), 50 to 60 Hz

Input current C3KX-PWR-1100WAC:12–6 A

C3KX-PWR-715WAC: 10–5 A
C3KX-PWR-350WAC: 4–2 A

Output ratings C3KX-PWR-1100WAC: –56 V@19.64 A

C3KX-PWR-715WAC: –56 V@12.8 A
C3KX-PWR-350WAC: –56 V@6.25 A

Total input BTU

1

C3KX-PWR-1100WAC: 4263 Btus per hour, 1250 W
C3KX-PWR-715WAC: 2742 Btus per hour, 804 W
C3KX-PWR-350WAC: 1357 Btus per hour, 398 W

Total output BTU

1

C3KX-PWR-1100WAC: 3751 Btus per hour, 1100 W
C3KX-PWR-715WAC: 2438 Btus per hour, 765 W
C3KX-PWR-350WAC: 1194 Btus per hour, 350 W

1. The total input and total output BTU ratings refer to input power to the power supply and output power to the switch. The
BTU ratings are based on 100 VAC for the 350-W and 715-W power supplies and 115 VAC for the 1100-W power supply.

OL-19593-01

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

A-3

Fan Module Specifications

Ta b l e A-4 Power Specifications for DC-Power 24- and 48-Port Switches

Appendix A Technical Specifications

Power Specifications

Maximum output power C3KX-PWR-440WDC: 440 W

Input current C3KX-PWR-440WDC: 16 – 8 A

DC input voltage C3KX-PWR-440WDC: –36 to –72 VDC

Output ratings C3KX-PWR-440WDC: –56 V@7.86 A

Voltage range domestic C3KX-PWR-440WDC: –36 VDC (minimum)

–48

VDC (nominal), –72 VDC (maximum)

Voltage range international C3KX-PWR-440WDC: –36 VDC (minimum)

–60

VDC (nominal), –72 VDC (maximum)

Total input BTU

Total output BTU

Wire gauge for ground connection C3KX-PWR-440WDC: 12 AWG or 8 AWG

Branch circuit protection C3KX-PWR-440WDC: 20 A

1. The total input and total output BTU ratings refer to input power to the power supply and output power to the switch. The
BTU ratings are based on –36 VDC.

1

1

C3KX-PWR-440WDC: 1841 Btus per hour, 540 W

C3KX-PWR-440WDC: 1502 Btus per hour, 440 W

Fan Module Specifications

Ta b l e A-5 Fan Module Environmental and Physical Specifications

Environmental Ranges

Operating temperature 23 to 113° F (–5 to 45° C)

Storage temperature –40 to 158° F (–40 to 70° C)

Relative humidity 10 to 95% (noncondensing)

Altitude Up to 10,000 ft (3049 m)

Physical Specification

Dimensions (H x D x W) 1.68 x 6.8 x 5.74 in. (4.27 x 17.27 x 14.58 cm)

Weight 0.24 lb. (0.1 kg)

Operating Specification

Airflow 60 cfm

A-4

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

OL-19593-01

Appendix A Technical Specifications

Ta b l e A-6 Standards and Certifications

Description Specification

Electromagnetic compatibility
certifications

Environmental Reduction of Hazardous Substances (ROHS) 5

Noise specifications Office product spec: 48 dBA at 86º F (30º C)

Tel c o CLEI code

Fan Module Specifications

FCC Part 15 Class A
EN55022 Class A (CISPR22)
EN55024 (CISPR24)
CE
VCCI Class A
AS/NZS CISPR22 Class A
MIC
China EMC certifications
GOST

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Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

A-5

Fan Module Specifications

Appendix A Technical Specifications

A-6

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

OL-19593-01

60915

2 3145678Pin Label

1

2

3

4

5

6

7

8

TP0+

TP0-

TP1+

TP2+

TP2-

TP1-

TP3+

TP3-

Connector and Cable Specifications

• “Connector Specifications” section on page B-1l

• “Cable and Adapter Specifications” section on page B-5

Connector Specifications

• 10/100/1000 Ports, page B-1

• 10 Gigabit Ethernet CX1 (SFP+ Copper) Connectors, page B-2

• SFP and SFP+ Modules, page B-2

• 10/100 Ethernet Management Port, page B-3

• Console Port, page B-4

APPENDIX

B

10/100/1000 Ports

OL-19593-01

The 10/100/1000 Ethernet ports on switches use RJ-45 connectors and Ethernet pinouts.

Figure B-1 10/100/1000 Port Pinouts

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

B-1

Connector Specifications

278541

58476

10 Gigabit Ethernet CX1 (SFP+ Copper) Connectors

The 10-Gigabit Ethernet electrical modules use CX1 copper connectors similar to the one shown in

Figure B-2.

Note When ordering or using CX1 cables, ensure that the version identifier is 2 or higher.

The 10-Gigabit Ethernet optical modules use the connectors shown in Figure B-3 and Figure B-4.

Figure B-2 10-Gigabit Ethernet CX1 Copper Connector (example)

Appendix B Connector and Cable Specifications

SFP and SFP+ Modules

Figure B-3, Figure B-4, and Figure B-5 show the SFP module connectors.

The Catalyst 3560-X switch supports the SFP module patch cable, a 0.5-meter, copper, passive cable
with SFP module connectors at each end (
Ethernet SFP ports) to connect two Catalyst 3560-X switches in a cascaded configuration.

Figure B-3 Duplex LC Cable Connector

Figure B-6). This cable can be used (only with 1-Gigabit

B-2

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

OL-19593-01

Appendix B Connector and Cable Specifications

57834

2 3145678Pin Label

1

2

3

4

5

6

7

8

TP0+

TP0-

TP1+

TP2+

TP2-

TP1-

TP3+

TP3-

126809

Figure B-4 Simplex LC Cable Connector

Figure B-5 Copper SFP Module RJ-45 Connector

Connector Specifications

Figure B-6 SFP Module Patch Cable (Catalyst 3560-X Switches)

10/100 Ethernet Management Port

The 10/100 Ethernet management port uses RJ-45 connectors with Ethernet pinouts. Figure B-7 shows
the pinouts.

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Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

B-3

Connector Specifications

H5318

2 3145678Pin Label

1

2

3

4

5

6

7

8

RD+

RD-

TD+

NC

NC

TD-

NC

NC

253405

Console Port

Appendix B Connector and Cable Specifications

Figure B-7 10/100 Port Pinouts

The switch has two console ports: a USB 5-pin mini-Type B port on the front panel (see Figure B-8) and
an RJ-45 console port on the rear panel.

Figure B-8 USB Mini-Type B Port

253163

The USB console port uses a USB Type A to 5-pin mini-Type B cable, shown in Figure B-9. The USB
Type A-to-USB mini-Type B cable is not supplied. You can order an accessory kit (part
number

Figure B-9 USB Type A-to-USB 5-Pin Mini-Type B Cable

800-33434) that contains this cable.

B-4

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

OL-19593-01

Appendix B Connector and Cable Specifications

The RJ-45 console port uses an 8-pin RJ-45 connector (See Table B-2 and Ta ble B-3.) The supplied
RJ-45-to-DB-9 adapter cable is used to connect the console port of the switch to a console PC. 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. For console port
and adapter pinout information, see

Tabl e B-2 and Tab l e B-3.

Cable and Adapter Specifications

• SFP and SFP+ Module Cable Specifications, page B-5

• SFP and SFP+ Module Cable Specifications, page B-5

• Four Twisted-Pair Cable Pinouts, page B-7

• Two Twisted-Pair Cable Pinouts, page B-7

• Identifying a Crossover Cable, page B-8

• Console Port Adapter Pinouts, page B-8

Cable and Adapter Specifications

SFP and SFP+ Module Cable Specifications

Each port must match the wave-length specifications on each end of the cable, and the cable must not
exceed the stipulated cable length. Copper 1000BASE-T SFP module transceivers use standard four
twisted-pair, Category 5 cable at lengths up to 328 feet (100 meters).

Ta b l e B-1 Fiber-Optic SFP and SFP+ Module Port Cabling Specifications

Core
Size/Cladding
Size (micron)

2

62.5/125

62.5/125

2

2

2

62.5/125
50/125
50/125

SFP Module

100BASE-BX
(GLC-FE-100BX-D
GLC-FE-100BX-U)

100BASE-FX
(GLC-GE-100FX)

100BASE-FX
(GLC-FE-100FX)

100BASE-LX
(GLC-FE-100LX)

1000BASE-BX10-D
(GLC-BX-D)

1000BASE-BX10-U
(GLC-BX-U)

1000BASE-SX
(GLC-SX-MM)

Wavelength
(nanometers)

1310 TX
1550 RX

Cable Type

SMF G.652

1310 MMF 50/125

1310 MMF 50/125

1310 SMF G.652

1490 TX

SMF G.652

1310 RX

1310 TX

SMF G.652

1490 RX

850 MMF 62.5/125

Modal
Bandwidth
(MHz/km)1Cable Distance

— 32,810 feet (10 km)

500
500

500
500

6,562 feet (2 km)
6,562 feet (2 km)

6,562 feet (2 km)
6,562 feet (2 km)

— 32,810 feet (10 km)

— 32,810 feet (10 km)

— 32,810 feet (10 km)

160
200
400
500

722 feet (220 m)
902 feet (275 m)
1,640 feet (500 m)
1,804 feet (550 m)

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B-5

Appendix B Connector and Cable Specifications

Cable and Adapter Specifications

Table B-1 Fiber-Optic SFP and SFP+ Module Port Cabling Specifications (continued)

SFP Module

1000BASE-T
(GLC-T)

Wavelength
(nanometers) Cable Type

Standard 4

— — — 328 feet (100 m)

twisted-pair

Core
Size/Cladding
Size (micron)

Modal
Bandwidth
(MHz/km)1Cable Distance

Category 5
cable

1000BASE-LX/LH

1310 MMF

(GLC-LH-SM)

1000BASE-ZX

1550 SMF G.652

(GLC-ZX-SM)

CWDM 1470, 1490,

3

SMF

62.5/125
50/125
50/125
G.652

SMF G.652

500
400
500

2

2

2

—

— 43.4 to 62 miles

— 62 miles (100 km)

1,804 feet (550 m)
1,804 feet (550 m)
1,804 feet (550 m)
32,810 feet (10 km)

(70 to 100 km)

4

1510, 1530,
1550, 1570,
1590, 1610

10GBASE-LR

1310 SMF G.652

2

6.21 miles (10 km)

(SFP-10G-LR)

10GBASE-SR
(SFP-10G-SR)

10GBASE-CX1

(SFP-H10GB-CU1M)

(SFP-H10GB-CU3M)

(SFP-H10GB-CU5M)

1. Modal bandwidth applies only to multimode fiber.

2. A mode-field diameter/cladding diameter = 9 micrometers/125 micrometers.

3. A mode-conditioning patch cord is required. Using an ordinary patch cord with MMF or 1000BASE-LX/LH SFP modules and a short link distance can
cause transceiver saturation and an elevated bit error rate (BER). When using the LX/LH SFP module with 62.5-micron diameter MMF, you must also
install a mode-conditioning patch cord between the SFP module and the MMF cable on both the sending and receiving ends of the link. The
mode-conditioning patch cord is required for link distances greater than 984 feet (300 m).

4. 1000BASE-ZX SFP modules can send data up to 62 miles (100 km) by using dispersion-shifted SMF or low-attenuation SMF; the distance depends on
the fiber quality, the number of splices, and the connectors.

850 MMF 62.5/125

62.5/125
50/125
50/125
50/125

—

— —
Twinax cable, 30-AWG
cable assembly

Twinax cable, 30-AWG
cable assembly

Twinax cable, 24-AWG
cable assembly

160
200
400
500
2000

85 feet (26 m)
108 feet (33 m)
216 feet (66 m)
269 feet (82 m)
6,561 feet (2000 m)

3 feet (1 m)

9 feet (3 m)

16 feet (5 m)

B-6

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

OL-19593-01

Appendix B Connector and Cable Specifications

1 TPO+

2 TPO-

3 TP1+

6 TP1-

1 TP1+

Switch Router or PC

2 TP1-

3 TPO+

6 TPO-

4 TP2+

5 TP2-

7 TP3+

8 TP3-

4 TP3+

5 TP3-

7 TP2+

8 TP2-

65272

Switch

3 TD+

6 TD–

1 RD+

2 RD–

Router or PC

3 RD+
6 RD–

1 TD+
2 TD–

Four Twisted-Pair Cable Pinouts

Figure B-10 Four Twisted-Pair Straight-Through Cable Schematic

Figure B-11 Four Twisted-Pair Crossover Cable Schematic

Cable and Adapter Specifications

Switch Switch

1 TP0+

2 TP0-

3 TP1+

6 TP1-

4 TP2+

5 TP2-

7 TP3+

8 TP3-

1 TP0+

2 TP0-

3 TP1+

6 TP1-

4 TP2+

5 TP2-

7 TP3+

8 TP3-

Two Twisted-Pair Cable Pinouts

Figure B- 1 2 Two Twi sted-Pair Straight-Through Cable Schematic

65274

OL-19593-01

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

B-7

Cable and Adapter Specifications

Switch

3 TD+

6 TD–

1 RD+

2 RD–

Switch

3 TD+
6 TD–

1 RD+
2 RD–

Pin 1

H10632

Pin 8

Pin 1 on one connector and

pin 8 on the other connector

should be the same color.

Figure B-13 Two Twisted-Pair Crossover Cable Schematic

Identifying a Crossover Cable

To identify a crossover 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 the same color as the wire connected to the
pin on the outside of the right plug. (See

Figure B-14 Identifying a Crossover Cable

Appendix B Connector and Cable Specifications

Figure B-14.)

Console Port Adapter Pinouts

The console port uses an 8-pin RJ-45 connector, which is described in Ta b le B-2 and Ta bl e B-3. If you
did not order a console cable, you need to provide an RJ-45-to-DB-9 adapter cable to connect the switch
console port to a PC console port. You need to provide an RF-45-to-DB-25 female DTE adapter if you
want to connect the switch console port to a terminal. You can order a kit with an adapter (part

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

B-8

number

Table B-3.

Table B-2 lists the pinouts for the console port, the RF-45-to-DB-9 adapter cable, and the console device.

Ta b l e B-2 Console Port Signaling Using a DB-9 Adapter

ACS-DSBUASYN=). For console port and adapter pinout information, see Table B-2 and

Switch Console
Port (DTE)

Signal DB-9 Pin Signal

RJ-45-to-DB-9
Terminal Adapter

RTS 8 CTS

DTR 6 DSR

TxD 2 RxD

Console
Device

OL-19593-01

Appendix B Connector and Cable Specifications

Table B-2 Console Port Signaling Using a DB-9 Adapter (continued)

Cable and Adapter Specifications

Switch Console
Port (DTE)

Signal DB-9 Pin Signal

RJ-45-to-DB-9
Terminal Adapter

Console
Device

GND 5 GND

GND 5 GND

RxD 3 TxD

DSR 4 DTR

CTS 7 RTS

Table B-3 lists the pinouts for the console port, RJ-45-to-DB-25 female DTE adapter, and the

console device.

Note The RJ-45-to-DB-25 female DTE adapter is not supplied with the switch. You can order a kit with the

adapter (part number ACS-DSBUASYN=) from Cisco.

Ta b l e B-3 Console Port Signaling Using a DB-25 Adapter

Switch Console
Port (DTE)

Signal DB-25 Pin Signal

RJ-45-to-DB-25
Terminal Adapter

Console
Device

RTS 5 CTS

DTR 6 DSR

TxD 3 RxD

GND 7 GND

GND 7 GND

RxD 2 TxD

DSR 20 DTR

CTS 4 RTS

OL-19593-01

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

B-9

Cable and Adapter Specifications

Appendix B Connector and Cable Specifications

B-10

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

OL-19593-01