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

Table Of Contents

Switch Installation

Preparing for Installation

Safety Warnings

Installation Guidelines

Box Contents

Tools and Equipment

Planning a Switch Stack (Catalyst 3750-E Switches)

Switch Stacking Guidelines

Stack Cabling Configurations

Stack Bandwidth and Partitioning Examples

Power On Sequence for Switch Stacks

Installing the Switch

Rack-Mounting

Attaching the Rack-Mount Brackets

Mounting the Switch in a Rack

Wall-Mounting

Attaching the Brackets to the Switch for Wall-Mounting

Mounting the Catalyst 3560E-12D Switch on a Wall

Table- or Shelf-Mounting

After Installing the Switch

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

Installing Devices in the 10-Gigabit Ethernet Slots

Installing X2 Transceiver Modules and Converter Modules

Removing an X2 Transceiver Module or Converter Module

Installing SFP Modules

Installing an SFP Module

Removing an SFP Module

Connecting Devices to the Ethernet Ports

10/100/1000 Ethernet Port Connections

PoE Port Connections

Where to Go Next


Switch Installation


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

Preparing for Installation

Planning a Switch Stack (Catalyst 3750-E Switches)

Installing the Switch

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

Installing Devices in the 10-Gigabit Ethernet Slots

Installing SFP Modules

Connecting Devices to the Ethernet Ports

Where to Go Next

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

This section covers these topics:

Safety Warnings

Installation Guidelines

Box Contents

Tools and Equipment

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 3750-E and Catalyst 3560-E Switch document that shipped with the switch and online at Cisco.com. Read this section before you start the installation procedure.


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



Warning Before working on equipment that is connected to power lines, remove jewelry (including rings, necklaces, and watches). Metal objects will heat up when connected to power and ground and can cause serious burns or weld the metal object to the terminals. Statement 43



Warning Do not stack the chassis on any other equipment. If the chassis falls, it can cause severe bodily injury and equipment damage. Statement 48



Warning 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



Warning Ethernet cables must be shielded when used in a central office environment. Statement 171



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



Warning If a redundant power system (RPS) is not connected to the switch, install an RPS connector cover on the back of the switch. Statement 265



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. Statement 361



Warning Attach only the following Cisco RPS model to the RPS receptacle: RPS 2300. Statement 370



Warning Read 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



Warning Do not work on the system or connect or disconnect cables during periods of lightning activity. Statement 1001



Warning Before performing any of the following procedures, ensure that power is removed from the DC circuit. Statement 1003



Warning Read the installation instructions before connecting the system to the power source. Statement 1004


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



Warning Class 1 laser product. Statement 1008



Warning 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



Warning The plug-socket combination must be accessible at all times, because it serves as the main disconnecting device. Statement 1019



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. Statement 1024



Warning This unit might have more than one power supply connection. All connections must be removed to de-energize the unit. Statement 1028



Warning Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement 1030



Warning Ultimate disposal of this product should be handled according to all national laws and regulations. Statement 1040



Warning For connections outside the building where the equipment is installed, the following ports must be connected through an approved network termination unit with integral circuit protection: 10/100/1000 Ethernet. Statement 1044



Warning When installing or replacing the unit, the ground connection must always be made first and disconnected last. Statement 1046



Warning 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. Statement 1072



Warning Installation of the equipment must comply with local and national electrical codes. Statement 1074


Statement 371—Power Cable and AC Adapter


Caution To comply with the Telcordia GR-1089 Network Equipment Building Systems (NEBS) standard for 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 side or right side of the switch should be routed and tied to the nearest rack metal hardware.


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 X2-10GB-CX4 transceiver module minimum bend radius and connector length is met. See the X2 transceiver module documentation for more information.

For switches that support the RPS 2300, confirm that you have access to the switch rear panel to connect the RPS 2300. If you do not have access to the rear panel, you should cable the switches before you rack-mount them.

For switches with the optional 1150-W power-supply module (C3K-PWR-1150WAC=), first rack-mount the switch before installing the power-supply module.

For power-supply modules and fan modules, tighten the module captive screws before moving the switch.

When connecting or disconnecting the power cord on a switch that is installed above or below a 1150-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 meters).

For cable requirements for X2 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 required 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.

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

Network Equipment Building Systems (NEBS) GR-63-CORE

National Electrical Manufacturers Association (NEMA) Type 1

International Electrotechnical Commission (IEC) IP-20

Box Contents

The box contents are described in the switch getting started guide. If any item is missing or damaged, contact your Cisco representative or reseller for support.

Tools and Equipment

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

Planning a Switch Stack (Catalyst 3750-E Switches)

If you plan to stack your switches, read these sections:

Switch Stacking Guidelines

Stack Cabling Configurations

Stack Bandwidth and Partitioning Examples

Power On Sequence for Switch Stacks

Switch Stacking Guidelines

For general concepts and procedures to manage switch stacks, see the switch software configuration guide on Cisco.com. When adding a Catalyst 3750-E switch to an existing 3750 switch stack, review the Catalyst 3750-E 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 1150-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 Appendix A, "Technical 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 "StackWise Ports" section on page 1-14. The "Stack Cabling Configurations" section provides examples of recommended configurations.

Access to the switch rear panel and to the rear of the rack if you are planning to stack the switches. If you do not have access to the rear panel, make sure that you cable the switches before you rack-mount them.

For switch stacks that are rack-mounted, review this recommended sequence of events:

If you are using the RPS 2300, install the RPS first at the bottom of the stack. If needed, allow one RU space between the RPS and the first switch above to provide room for cabling.

Connect all the 22-pin RPS cables to the RPS 2300 as needed.

Rack-mount the switches. If you have the optional 1150-W power-supply module, first rack-mount the switch before installing the power-supply module.

Connect the RPS cable to the first switch above the RPS 2300. Connect the stack cables to the first switch above the RPS.

Connect the RPS cable to the next switch above the RPS 2300. Connect the stack cables to the next switch above the RPS.

Repeat until all devices are connected.

Stack Cabling Configurations

This section describes the recommended cabling configurations for stacking the switches.

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.

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

The configuration examples in Figure 2-2 use the 3-meter StackWise cable in addition to the supplied 0.5-meter StackWise cable. This configuration also provides redundant connections.

Figure 2-2 Stacking the Catalyst 3750-E Switches in a Vertical Rack or on a Table Using 0.5-meter and 3-meter StackWise Cables

Figure 2-3 and Figure 2-4 are examples of recommended configurations when the switches are rack- or wall-mounted side-by-side. Use the 1-meter and the 3-meter StackWise cables to connect the switches. These configuration provide redundant connections.

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

Figure 2-4 Stacking Nine Switches in a Side-by-Side Mounting Configuration

Stack Bandwidth and Partitioning Examples

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

Figure 2-5 shows an example of a stack of Catalyst 3750-E switches that provides full bandwidth and redundant StackWise cable connections.

Figure 2-5 Example of a Stack with Full Bandwidth Connections

Figure 2-6 shows an example of a stack of Catalyst 3750-E switches with incomplete StackWise cabling connections. This stack provides only half bandwidth and does not have redundant connections.

Figure 2-6 Example of a Stack with Half Bandwidth Connections

Figure 2-7 and Figure 2-8 show examples of stacks of Catalyst 3750-E switches with failover conditions. In Figure 2-7, the StackWise cable is bad in link B; therefore, this stack provides only half bandwidth and does not have redundant connections. In Figure 2-8, link B is bad; therefore, this stack partitions into two stacks, and switch 1 and switch 3 are stack masters.

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

Figure 2-8 Example of a Partitioned Stack with a Failover Condition

Power On Sequence for Switch 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.

If you have no preference as to which switch becomes the stack master, power on all the switches in the stack within a 1-minute timeframe. These switches participate in the stack master election. Switches powered on after the 1-minute timeframe 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.

Installing the Switch

This section describes these installation procedures:

Rack-Mounting

Wall-Mounting

Table- or Shelf-Mounting

After Installing the Switch

The illustrations shown in this section show the Catalyst 3750E-48 PoE switch as an example. Except for wall-mounting, you can install the Catalyst 3750-E and Catalyst 3560-E switches following the same procedures.

Rack-Mounting

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

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 2-9 shows the standard 19-inch brackets and optional mounting brackets and part numbers.

Figure 2-9 Rack-Mounting Brackets

1

19-inch brackets, part number RCKMNT-E-1RU=

2

23-inch brackets, part number RCKMNT-E-MISC=

3

23/24-inch brackets, part number RCKMNT-E-MISC=

4

ETSI brackets, part number RCKMNT-E-MISC=

5

Wall-mount brackets for Catalyst 3560E-12D switches,
part number 700-25427-XX=


Attaching the Rack-Mount Brackets

To install the switch in a rack, you must first remove the screws from the switch chassis so that the mounting brackets can be attached. For attachment at the front-mounting position, remove two Phillips truss-head screws from the switch side panels (Figure 2-10). For some switch models, remove only one screw from the side panels. For attachment at the mid-mounting position, remove one screw. For attachment at the rear-mounting position, remove one or two screws depending on the switch model.

Figure 2-10 Removing Screws from the Switch

Use four Phillips flat-head screws to attach the long side of the brackets to the switch for the front- or rear-mounting positions (Figure 2-11). Use three screws to attach the brackets for the mid-mounting position.

Figure 2-11 Attaching Brackets for 19-inch Racks

1

Front-mounting position

3

Mid-mounting position

2

Number-8 Phillips flat-head screws

4

Rear-mounting position


Mounting the Switch in a Rack

After the brackets are attached to the switch, use the four supplied Phillips machine screws to attach the brackets to the rack (Figure 2-12). Use the black Phillips machine screw to attach the cable guide to the left or right bracket.

When you complete the switch installation, see the "After Installing the Switch" section for more information switch configuration.

Figure 2-12 Mounting the Switch in a Rack

1

Phillips machine screw, black

4

Number-12 Phillips machine screws

2

Cable guide

5

Mid-mounting position

3

Front-mounting position

6

Rear-mounting position


Wall-Mounting

To install the Catalyst 3560E-12D switch on a wall, follow the instructions in these procedures:

Attaching the Brackets to the Switch for Wall-Mounting

Mounting the Catalyst 3560E-12D Switch on a Wall


Warning Read 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



Caution You can only wall-mount the Catalyst 3560E-12D switch. You cannot wall-mount the 24- and 48-port switches or the Catalyst 3560E-12SD switch.

Attaching the Brackets to the Switch for Wall-Mounting

Before installing the brackets on the switch, remove eleven Phillips truss-head screws from the switch side panels. Figure 2-13 shows how to attach the bracket to one side of the switch. Follow the same steps to attach the second bracket to the opposite side.


Caution Do not use the 19-inch brackets to wall-mount the switch. The brackets are not suitable for wall-mounting.

Figure 2-13 Attaching the Brackets for Wall-Mounting (only Catalyst 3560E-12D Switches)

1

Phillips truss-head screws


Mounting the Catalyst 3560E-12D Switch on a Wall

For Catalyst 3560E-12D switches, mount the switch with the left-side panel facing up, as shown in Figure 2-14. For the best support of the switch and cables, make sure that the switch is attached securely to wall studs.

Figure 2-14 Wall-Mounting Catalyst 3560E-12D Switches, Left-Side Panel Facing Up

1

User-supplied screws


When you complete the switch installation, see the "After Installing the Switch" section for more information 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.

Remove two Phillips truss-head screws from the switch side panels and use those screws to attach the brackets to the switch (Figure 2-15). Secure the brackets to the table or shelf with the appropriate hardware.


Caution Do not use the 19-inch brackets to wall-mount the switch. The brackets are not suitable for wall-mounting.

Figure 2-15 Attaching the 19-inch Brackets for Table- or Shelf-Mounting

1

User-supplied screws

2

Phillips truss-head screws


When you complete the switch installation, see the "After Installing the Switch" section for more information switch configuration.

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 Devices in the 10-Gigabit Ethernet Slots" section and the "Connecting Devices to the Ethernet Ports" section.

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

Before connecting the StackWise cables, review the "Planning a Switch Stack (Catalyst 3750-E Switches)" section. Always use a Cisco-approved StackWise cable to connect the switches.

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


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. Insert the cable into the StackWise port on the back of the switch (Figure 2-16). Using a ratcheting torque screwdriver, tighten the retainer screws to 5 lbf-in. (80 ozf-in.).

Step 3 Insert the other end of the cable into the connector of the other switch, and tighten the retainer screws to 5 lbf-in. (80 ozf-in.). Avoid overtightening the screws.

Figure 2-16 Inserting the StackWise Cable in a StackWise Port



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 before removing the connector. When the connectors are not being used, replace the dust covers to protect them from dust.

Installing Devices in the 10-Gigabit Ethernet Slots

These sections describe how to install and remove X2 transceiver modules and the Cisco TwinGig Converter Modules (also known as converter modules).

Use only Cisco X2 transceiver modules, converter modules, and SFP modules with the switch. Each Cisco module has an internal serial EEPROM that is encoded with security information. This encoding provides a way for Cisco to identify and validate that the module meets the requirements for the switch.

For more information about installing, removing, cabling, and troubleshooting X2 transceiver modules, see the module documentation that shipped with your device. For module cable specifications, see Appendix B, "Connector and Cable Specifications."

Installing X2 Transceiver Modules and Converter Modules

When installing X2 transceiver modules and converter modules, observe these general precautions:

When you install or remove the converter module, the mode on the switch changes from 10-Gigabit Ethernet to Gigabit Ethernet or the reverse. During this mode change, data traffic on the other switch uplink ports (X2 transceiver or SFP module ports) might temporarily stop. When you install or remove an X2 transceiver or SFP module, traffic delay does not occur.

Do not remove the EMC plug from the 10-Gigabit Ethernet slot until you are ready to install an X2 transceiver or a converter module. Either a module or an EMC plug must be installed in the slot at all times.

Do not remove the dust plugs from the fiber-optic X2 transceiver 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 X2 module can shorten its useful life. Do not remove and insert any X2 module more often than is absolutely necessary.

To prevent ESD damage, follow your normal board and component handling procedures when connecting cables to the switch and other devices.

To install an X2 transceiver module or a converter module, follow these steps:


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 For 24- and 48-port switches, position the module face up to install in the upper module slot (slot 1). Position the module face down to install in the lower module slot (slot 2). See Figure 2-17 and Figure 2-19. Slide the module into the opening until the back of the module faceplate is flush with the switch faceplate.

For Catalyst 3560E-12D switches, position the module top facing right to install in a module slot. See Figure 2-18 and Figure 2-20. Slide the module into the opening until the back of the module faceplate is flush with the switch faceplate.

For Catalyst 3560E-12SD switches, position the module face up to install in the upper module slot (slot 1). Position the module face down to install in the lower module slot (slot 2). See Figure 2-17 and Figure 2-19. Slide the module into the opening until the back of the module faceplate is flush with the switch faceplate.


Caution Do not insert or remove an X2 transceiver module with fiber-optic cables attached. An X2 module interface might go into an error-disabled state when an X2 transceiver module is inserted or removed with fiber-optic cables connected to the module. 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.

Figure 2-17 Installing X2 Transceiver Modules in 24- and 48-Port Switches and Catalyst 3560E-12SD Switches

1

Module inserted face up

2

Module inserted face down


Figure 2-18 Installing X2 Transceiver Modules in Catalyst 3560E-12D Switches

1

Module inserted facing right



Caution Do not install the converter module with SFP modules or cables connected. Always remove any cables and modules before installing the converter module in the slot.

Figure 2-19 Installing Converter Modules in 24- and 48-Port Switches and
Catalyst 3560E-12SD Switches

1

Module inserted face up

2

Module inserted face down


Figure 2-20 Installing Converter Modules in Catalyst 3560E-12D Switches

1

Module inserted facing right



Removing an X2 Transceiver Module or Converter Module

To remove an X2 transceiver module or a converter module, follow these steps:


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


Caution Do not insert or remove an X2 transceiver module with fiber-optic cables attached. An X2 module interface might go into an error-disabled state when an X2 transceiver module is inserted or removed with fiber-optic cables connected to the module. 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.

Step 2 For X2 transceiver modules, disconnect the cables from the module. For fiber-optic modules, install the optical bore dust plugs.


Caution Do not remove the converter module with SFP modules or cables installed. Always remove any cables and modules before removing the converter module from the slot.

Step 3 For converter modules, disconnect the cables from the SFP module. Remove the SFP modules from the converter module.

Step 4 Carefully pull on the X2 module sleeve, or pinch the tabs on the converter module to disengage it from the slot. Grasp the edges of the module, and carefully slide it out of the slot.

Step 5 Reinstall a replacement module or an EMC plug in the 10-Gigabit Ethernet slot.

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


Installing SFP Modules

This section describes how to install and remove SFP modules in the 3560E-12SD switch slots and in the Cisco TwinGig Converter Module slots. For 24- and 48-port switches and Catalyst 3560E-12D switches, you must have a converter module installed in a 10-Gigabit Ethernet slot to use SFP modules.

See the "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. Each Cisco module has an internal serial EEPROM that is encoded with security information. This encoding provides a way for Cisco to identify and validate that the module meets the requirements for the switch.

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."

Installing an SFP Module

When installing SFP modules, observe these general precautions:

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 is absolutely necessary.

To prevent ESD damage, follow your normal board and component handling procedures when connecting cables to the switch and other devices.

To install an SFP module, follow these steps:


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


Caution To avoid damage to the converter module, first install the converter module in the switch 10-Gigabit Ethernet slot before installing the SFP modules.

Step 2 For switches without SFP module slots, install a converter module in the 10-Gigabit Ethernet module slot as described in the "Installing X2 Transceiver Modules and Converter Modules" section.

Step 3 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 4 If the SFP module has a bale-clasp latch, move it to the open, unlocked position.

Step 5 For 24- and 48-port switches, position the SFP module face up to install in the upper converter module slot (slot 1). Position the module face down to install in the lower converter module slot (slot 2). See Figure 2-21.

For Catalyst 3560E-12D switches, position the SFP module top facing right to install in a converter module slot. See Figure 2-22.

For Catalyst 3560E-12SD switches, position the SFP module face up to install it in a module slot. See Figure 2-23. For an example of installing SFPs in a converter module, see Figure 2-21.

Step 6 If the module has a bale-clasp latch, close it to lock the SFP module in place.

Step 7 Remove the SFP dust plugs and save.

Step 8 Connect the SFP cables.

Figure 2-21 Converter Module with SFP Modules Installed in 24- and 48-port Switches and Catalyst 3560E-12SD Switches

1

Converter modules

3

Send (TX) optical bore

2

SFP modules1

4

Receive (RX) optical bore

1 Lower SFP modules are inverted on 24- and 48-port switches.


Figure 2-22 Converter Module with SFP Modules Installed in Catalyst 3560E-12D Switches

1

Converter module

3

Send (TX) optical bore

2

SFP modules

4

Receive (RX) optical bore


Figure 2-23 Installing an SFP Module in Catalyst 3560E-12SD Switches


Removing an SFP Module

To remove an SFP module from a module slot, follow these steps:


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 index 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

This section includes these topics:

10/100/1000 Ethernet Port Connections

PoE Port Connections


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.

10/100/1000 Ethernet Port Connections

The 10/100/1000 Ethernet ports use standard RJ-45 connectors with Ethernet pinouts. The maximum cable length is 328 feet (100 meters). The 100BASE-TX and 1000BASE-T traffic requires Category 5, Category 5e, or Category 6 UTP cable. The 10BASE-T traffic can use Category 3 or Category 4 cable.

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 Table 2-1 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.

Table 2-1 Recommended Ethernet Cables (When Auto-MDIX is Disabled) 

Device
Crossover Cable 1
Straight-Through Cable 1

Switch to switch

Yes

No

Switch to hub

Yes

No

Switch to computer or server

No

Yes

Switch to router

No

Yes

Switch to IP phone

No

Yes

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 "10/100/1000 Ethernet Port Connections" section.

The PoE ports provide PoE support for devices compliant with IEEE 802.3af and also provide Cisco pre-standard PoE support for Cisco IP Phones and Cisco Aironet Access Points.

Each port can deliver up to 15.4 W of PoE. With the 1150-W power-supply module, the Catalyst 3750E-48PS and Catalyst 3560E-48PS switches can deliver 15.4 W on all 48 ports. With the 750-W power-supply module, the switches can deliver 15.4 W of PoE on any 24 of the 48 ports, or any combination of the ports can deliver an average of 7.7 W of PoE at the same time, up to a maximum switch power output of 370 W. On a per-port basis, you can control whether or not a PoE port automatically provides power when an IP phone or an access point is connected.


Note On 48-port PoE switches, you must use the 1150-W power-supply module to provide full 15.4-W capability across all 48 ports.


To access an advanced PoE planning tool, use the Cisco Power Calculator available on Cisco.com at this URL:

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

You can use this application to calculate the power supply requirements for a specific PoE configuration. The results show output current, output power, and system heat dissipation.

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 at this URL:

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 1-15, 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. Only standard-compliant cabling can be used to connect Cisco pre-standard IP Phones and wireless access points or IEEE 802.3af-compliant devices to PoE ports. A cable or device that causes a PoE fault must be removed from the network.


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. Statement 361



Warning 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. Statement 1072


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.

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.