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Chapter 2      Switch Installation (24- and 48-Port Switches)
10/100 or 10/100/1000 Ports
10/100 or 10/100/1000 Ports
The switch 10/100 and 10/100/1000 ports configure themselves to operate at the speed of attached 
devices. If the attached ports do not support autonegotiation, you can explicitly set the speed and duplex 
parameters. Connecting devices that do not autonegotiate or that have their speed and duplex parameters 
manually set can reduce performance or result in no linkage. 
NoteYou can configure duplex mode to half, full, or autonegotiate on Gigabit Ethernet interfaces if the speed 
is set to 10 or 100 Mb/s. You cannot configure half-duplex mode on Gigabit Ethernet interfaces if the 
interface speed is 1000 Mb/s.
WarningVoltages 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. Statement 1072
To maximize performance, choose one of these methods for configuring the Ethernet ports:
Let the ports autonegotiate both speed and duplex.
Set the port speed and duplex parameters on both ends of the connection.
You can configure the 10/100 or 10/100/1000 ports on the Catalyst 3560 PoE switches either to 
automatically provide PoE if a Cisco IP Phone, Cisco Aironet Access Point, or end device compliant 
with IEEE 802.3af is connected or to never provide PoE, even if an IP phone or an access point is 
connected. The default setting is Auto. To prevent electrostatic-discharge (ESD) damage, follow your 
normal board and component handling procedures.
CautionPoE faults are caused when noncompliant cabling or powered devices are connected to a PoE port. Only 
standard-compliant cabling can be used to connect Cisco prestandard IP Phones or wireless access points 
or IEEE 802.3af-compliant devices to PoE ports. You must remove a cable or device that causes a PoE 
fault from the network. 
You can use the mdix auto interface configuration command in the CLI to enable the automatic 
medium-dependent interface crossover (auto-MDIX) feature. When the auto-MDIX feature is enabled, 
the switch detects the required cable type for copper Ethernet connections and configures the interfaces 
accordingly. Therefore, you can use either a crossover or a straight-through cable for connections to a 
copper 10/100, 10/100/1000, or 1000BASE-T SFP module port on the switch, regardless of the type of 
device on the other end of the connection.
The auto-MDIX feature is enabled by default on switches running Cisco IOS Release 12.2(18)SE or 
later. For releases between Cisco IOS Release 12.1(14)EA1 and 12.2(18)SE, the auto-MDIX feature is 
disabled by default. For configuration information for this feature, see the switch software configuration 
guide or the switch command reference. 
						

							 
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Chapter 2      Switch Installation (24- and 48-Port Switches)
Connecting the Switch to Compatible Devices
The Catalyst 3560 switch can connect to a Cisco IP Phone through a straight-through, twisted four-pair 
Category 5 cable. The rear panel of the Cisco IP Phone might have more than one RJ-45 connector. Use 
the LAN-to-phone connector to connect the IP phone to the switch. See the Cisco IP Phone 
documentation for more information about connecting devices.
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.
Connecting the Switch to Compatible Devices
Connecting to 10BASE-T or 100BASE-TX Devices, page 2-20
Connecting to Fiber-Optic SFP Modules, page 2-21
Connecting to 1000BASE-T SFP Modules, page 2-22
Connecting to a Dual-Purpose Port, page 2-23
Connecting to 10BASE-T or 100BASE-TX Devices
Step 1When connecting to workstations, servers, routers, and Cisco IP Phones, connect a straight-through 
cable to an RJ-45 connector on the front panel. (See Figure 2-18.) When connecting to switches or 
repeaters, use a crossover cable. (See the “Cable and Adapter Specifications” section on page B-4 for 
cable-pinout descriptions.)
Figure 2-18 Connecting to an Ethernet Port
Step 2
Connect the other end of the cable to an RJ-45 connector on the other device. The port LED turns on 
when both the switch and the connected device have established link.
The port LED is amber while Spanning Tree Protocol (STP) discovers the topology and searches for 
loops. This takes about 30 seconds, and then the port LED turns green. If the port LED does not turn on, 
the device at the other end might not be turned on, or there might be a cable problem or a problem with 
the adapter installed in the attached device. See Chapter 4, “Troubleshooting,” for solutions to cabling 
problems.
SYSTRPS
STATDUPLXSPEEDPoEMODE
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Connecting the Switch to Compatible Devices
Step 3Reconfigure and reboot the connected device, if necessary.
Step 4Repeat Steps 1 through 3 to connect each device.
Connecting to Fiber-Optic SFP Modules
WarningClass 1 laser product. Statement 1008
CautionDo not remove the rubber plugs from the SFP module port or the rubber caps from the fiber-optic cable 
until you are ready to connect the cable. The plugs and caps protect the SFP module ports and cables 
from contamination and ambient light. 
 
Before connecting to the SFP module, be sure that you understand the port and cabling stipulations in 
the “Installation Guidelines” section on page 2-5. See Appendix B, “Connector and Cable 
Specifications,” for information about the LC on the SFP module.
Step 1Remove the rubber plugs from the module port and fiber-optic cable, and store them for future use. 
Step 2Insert one end of the fiber-optic cable into the SFP module port (see Figure 2-19).
Figure 2-19 Connecting to a Fiber-Optic SFP Module Port                
Step 3Insert the other cable end into a fiber-optic connector on a target device.
Step 4Observe the port status LED.
The LED turns green when the switch and the target device have an established link.
The LED turns amber while the STP discovers the network topology and searches for loops. This 
process takes about 30 seconds, and then the port LED turns green. 1LC connector
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Connecting the Switch to Compatible Devices
If the LED is off, the target device might not be turned on, there might be a cable problem, or there 
might be problem with the adapter installed in the target device. See Chapter 4, “Troubleshooting,” 
for solutions to cabling problems.
Step 5If necessary, reconfigure and restart the switch or target device.
Connecting to 1000BASE-T SFP Modules
CautionTo prevent ESD damage, follow your normal board and component handling procedures.
NoteWhen connecting to a 1000BASE-T device, use a four twisted-pair, Category 5 or higher cable.
The auto-MDIX feature is enabled by default. For configuration information for this feature, see the 
switch software configuration guide or the switch command reference.
Step 1Insert one end of the cable into the SFP module port (see Figure 2-20). When connecting to servers, 
workstations, and routers, insert a four twisted-pair, straight-through cable in the RJ-45 connector. When 
connecting to switches or repeaters, insert a four twisted-pair, crossover cable. 
Figure 2-20 Connecting to a 1000BASE-T SFP Module                 
Step 2Insert the other cable end in an RJ-45 connector on a target device.
Step 3Observe the port status LED.
The LED turns green when the switch and the target device have an established link.
The LED turns amber while the STP discovers the network topology and searches for loops. This 
process takes about 30 seconds, and then the port LED turns green. 1RJ-45 connector
4041
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4445
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Connecting the Switch to Compatible Devices
If the LED is off, the target device might not be turned on, there might be a cable problem, or there 
might be problem with the adapter installed in the target device. See Chapter 4, “Troubleshooting,” 
for solutions to cabling problems.
Step 4If necessary, reconfigure and restart the switch or target device.
Connecting to a Dual-Purpose Port
Step 1Connect an RJ-45 connector to the 10/100/1000 port, or install an SFP module into the SFP module slot, 
and connect a cable to the SFP module port, as shown in Figure 2-21. 
Figure 2-21 Connecting to a Dual-Purpose Port                 
Only one port can be active at a time. If both ports are connected, the SFP module port has priority. You 
cannot configure the priority setting.
Step 2Connect the other end of the cable to the other device. The switch automatically detects the connection 
and configures the port.
NoteBy default, the switch detects whether an RJ-45 connector or SFP module is connected to a dual-purpose 
port and configures the port accordingly. You can change this setting and configure the port to recognize 
only an RJ-45 connector or only an SFP module by using the media type interface configuration 
command. For more information, see the command reference.1RJ-45 connector2LC connector
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Chapter 2      Switch Installation (24- and 48-Port Switches)
Where to Go Next
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 switches. The device 
manager is a 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 
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. 
Use the CLI from the console to configure the switch as a member of a cluster or as an individual 
switch. See the Catalyst 3560 Switch Software Configuration Guide and the Catalyst 3560 Switch 
Command Reference on Cisco.com for information on using the CLI with a Catalyst 3560 switch.
Start an SNMP application such as the CiscoView application. 
						

							CH A P T E R
 
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3
Switch Installation (8- and 12-Port Switches)
This chapter describes how to start your switch installation, including how to interpret the power-on 
self-test (POST) that ensures proper operation. It also describes how to install the switch.
NoteThis chapter describes the installation information specific to the Catalyst 3560-8PC and 
Catalyst 3560-12PC-S switches. For installing the other Catalyst 3560 switches, see Chapter 2, “Switch 
Installation (24- and 48-Port Switches).”
Read the topics and perform the procedures in this order:
Preparing for Installation, page 3-1
Verifying Switch Operation, page 3-7
Installing the Switch, page 3-7
Where to Go Next, page 3-20
For information about connecting to the switch, see the “Connecting the Switch to Compatible Devices” 
section on page 2-20
Preparing for Installation
Warnings, page 3-2
Installation Guidelines, page 3-5
Equipment That You Supply, page 3-6
Box Contents, page 3-7
Tools and Equipment, page 3-7 
						

							 
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Chapter 3      Switch Installation (8- and 12-Port Switches)
Preparing for Installation
Warnings
These warnings are translated into several languages in the Regulatory Compliance and Safety 
Information for the Catalyst 3560 Switch.
WarningTo prevent the switch from overheating, do not operate it in an area that exceeds the maximum 

3 inches (7.6 cm) of clearance around the ventilation openings. Statement 17B
WarningBefore 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
WarningDo not stack the chassis on any other equipment. If the chassis falls, it can cause severe bodily injury 
and equipment damage. Statement 48 
WarningAn 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
WarningBlank faceplates (filler 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 and faceplates are in place. Statement 156
WarningEthernet cables must be shielded when used in a central office environment. Statement 171
WarningIf a redundant power system (RPS) is not connected to the switch, install an RPS connector cover on 
the back of the switch. Statement 265
WarningAttach only the following Cisco RPS model to the RPS receptacle:  
PWR-RPS2300 / PWR675-AC-RPS-N1 Statement 370
WarningRead the wall-mounting instructions carefully before beginning installation. Failure to use the 
correct hardware or to follow the correct procedures could result in a hazardous situation to people 
and damage to the system. Statement 378 
						

							 
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Preparing for Installation
WarningDo not work on the system or connect or disconnect cables during periods of lightning activity. 
Statement 1001
WarningBefore performing any of the following procedures, ensure that power is removed from the DC circuit. 
Statement 1003
WarningRead the installation instructions before connecting the system to the power source. Statement 1004
WarningThis product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that 
the protective device is rated not greater than: 5 A Statement 1005
WarningClass 1 laser product. Statement 1008
WarningThis 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
WarningThe plug-socket combination must be accessible at all times, because it serves as the main 
disconnecting device. Statement 1019
WarningA readily accessible two-poled disconnect device must be incorporated in the fixed wiring. 
Statement 1022
WarningTo prevent bodily injury when mounting or servicing this unit in a rack, you must take special 
precautions to ensure that the system remains stable. The following guidelines are provided to 
ensure your safety:
   This unit should be mounted at the bottom of the rack if it is the only unit in the rack.
   When mounting this unit in a partially filled rack, load the rack from the bottom to the top with the heaviest 
component at the bottom of the rack.
   If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing the unit in 
the rack. 
Statement 1006 
						

							 
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Preparing for Installation
WarningThis equipment must be grounded. Never defeat the ground conductor or operate the equipment in the 
absence of a suitably installed ground conductor. Contact the appropriate electrical inspection 
authority or an electrician if you are uncertain that suitable grounding is available. Statement 1024
WarningThis unit might have more than one power supply connection. All connections must be removed to 
de-energize the unit. Statement 1028
WarningOnly trained and qualified personnel should be allowed to install, replace, or service this equipment. 
Statement 1030
WarningUltimate disposal of this product should be handled according to all national laws and regulations. 
Statement 1040
WarningFor connections outside the building where the equipment is installed, the following ports must be 
connected through an approved network termination unit with integral circuit protection: 10/100/1000 
Ethernet. Statement 1044 
WarningWhen installing or replacing the unit, the ground connection must always be made first and 
disconnected last. Statement 1046
WarningThis warning symbol means danger. You are in a situation that could cause bodily injury. Before you 
work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar 
with standard practices for preventing accidents. Use the statement number provided at the end of 
each warning to locate its translation in the translated safety warnings that accompanied this device. 
Statement 1071
WarningVoltages 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. Statement 1072
WarningNo user-serviceable parts inside. Do not open. Statement 1073
WarningInstallation of the equipment must comply with local and national electrical codes. Statement 1074