Table Of Contents
Switch Installation
Preparing for Installation
Warnings
Installation Guidelines
Verifying Package Contents
Verifying Switch Operation
Powering On the Switch and Running POST
Powering Off the Switch
Planning the Stack
Planning Considerations
Powering Considerations
Cabling Considerations
Recommended Cabling Configurations
Installing the Switch
Rack-Mounting
Removing Screws from the Switch
Attaching Brackets to the Catalyst 3750G-24TS Switch
Attaching Brackets to the Catalyst 3750G Integrated Wireless LAN Controller Switches
Attaching Brackets to All Other Catalyst 3750 Switches
Mounting the Switch in a Rack
Attaching the Cable Guide
Wall-Mounting
Attaching the Brackets to the Switch for Wall-Mounting
Attaching the RPS Connector Cover
Mounting the Switch on a Wall
Table- or Shelf-Mounting
Connecting StackWise Cable to StackWise Ports
Installing and Removing SFP Modules
Installing SFP Modules into SFP Module Slots
Removing SFP Modules from SFP Module Slots
Installing and Removing XENPAK Modules (Catalyst 3750G-16TD Switch)
Installing a XENPAK Module
Removing a XENPAK Module
Connecting to the 10/100 and 10/100/1000 Ports
Connecting to an SFP Module
Connecting to a Fiber-Optic SFP Module
Connecting to 1000BASE-T SFP Modules
Connecting to a XENPAK Module
Where to Go Next
Switch Installation
This chapter describes how to start your switch and how to interpret the power-on self-test (POST) that ensures proper operation. It describes the planning and cabling considerations to keep in mind while planning your stack. It describes how to install the switch and make connections to the switch. Read the topics and perform the procedures in this order:
•
Preparing for Installation
•Verifying Switch Operation
•Planning the Stack
•Installing the Switch
•Connecting StackWise Cable to StackWise Ports
•Installing and Removing SFP Modules
•Installing and Removing XENPAK Modules (Catalyst 3750G-16TD Switch)
•Connecting to the 10/100 and 10/100/1000 Ports
•Connecting to an SFP Module
•Connecting to a XENPAK Module
•Where to Go Next
Preparing for Installation
This section covers these topics:
•Warnings
•Installation Guidelines
•Verifying Package Contents
•Verifying Switch Operation
Warnings
These warnings are translated into several languages in the Regulatory Compliance and Safety Information for the Catalyst 3750 Switch document that ships with the switch.
Warning To prevent the switch from overheating, do not operate it in an area that exceeds the maximum recommended ambient temperature of 113°F (45°C). To prevent airflow restriction, allow at least 3 inches (7.6 cm) of clearance around the ventilation openings. Statement 17B
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 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 To comply with safety regulations, mount switches on a wall with the front panel facing up.
Statement 266
Warning Attach only the following Cisco RPS model to the RPS receptacle:
PWR-RPS2300, PWR675-AC-RPS-N1=. Statement 370
Warning Do not work on the system or connect or disconnect cables during periods of lightning activity. Statement 1001
Warning Read the installation instructions before connecting the system to the power source. Statement 1004
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Warning
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To prevent bodily injury when mounting or servicing this unit in a rack, you must take special precautions to ensure that the system remains stable. The following guidelines are provided to ensure your safety:
•This unit should be mounted at the bottom of the rack if it is the only unit in the rack.
•When mounting this unit in a partially filled rack, load the rack from the bottom to the top with the heaviest component at the bottom of the rack.
•If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing the unit in the rack. Statement 1006
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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 To prevent the system from overheating, do not operate it in an area that exceeds the maximum recommended ambient temperature of:
45°C Statement 1047
Warning This warning symbol means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents. Use the statement number provided at the end of each warning to locate its translation in the translated safety warnings that accompanied this device. Statement 1071
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 No user-serviceable parts inside. Do not open. Statement 1073
Warning Installation of the equipment must comply with local and national electrical codes. Statement 1074
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.
Note The grounding architecture of this product is DC-isolated (DC-I).
Catalyst 3750G Integrated Wireless LAN Controller Switches
This warning applies only to the Catalyst 3750G-24WS-S25 and 3750G-24WS-S50 switches:
Warning There is the danger of explosion if the battery is replaced incorrectly. Replace the battery only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries according to the manufacturer's instructions. Statement 1015
Installation Guidelines
When you decide where to place the switch, be sure to observe these requirements:
•For copper Ethernet ports, including 10/100 ports, 10/100/1000 ports, and 1000BASE-T SFP module ports, cable lengths from the switch to connected devices can be up to 328 feet (100 meters).
•See Table B-3 on page B-5 for a list of cable specifications for 1000BASE-SX, 1000BASE-LX, 1000BASE-ZX, and CWDM fiber-optic SFP module connections. Each port must match the wave-length specifications on the other end of the cable, and for reliable communications, the cable must not exceed the stipulated cable length.
•See the Catalyst 3750 release notes for cable requirements for XENPAK module connections. Each port must match the wave-length specifications on the other end of the cable, and for reliable communications, the cable must not exceed the required cable length.
Note When you use shorter distances of single-mode fiber cable, you might need to insert an inline optical attenuator in the link to avoid overloading the receiver.
When the fiber-optic cable span is less than 25 km, you should insert a 5-decibel (dB) or 10-dB inline optical attenuator between the fiber-optic cable plant and the receiving port on the 1000BASE-ZX SFP module at each end of the link.
•The operating environment must be within the ranges listed in Appendix A, "Technical Specifications."
•Clearance to front and rear panels must be such that
–You can easily read the front-panel indicators.
–Access to ports is sufficient for unrestricted cabling.
Make sure that there is access to the rear of the rack if you are planning to stack the switches. If you do not have access to the rear panel, make sure that you cable the switches before you rack-mount them.
–The AC power cord can reach from the AC power outlet to the connector on the switch rear panel.
•Cabling must be away from sources of electrical noise, such as radios, power lines, and fluorescent lighting fixtures. Make sure the cabling is safely away from other devices that might damage the cables.
•Airflow around the switch and through the vents must be unrestricted.
•Temperature around the unit should not exceed 113°F (45°C).
Note If you install the switch in a closed or multirack assembly, the temperature around it might be greater than normal room temperature.
Verifying Package Contents
Note Carefully remove the contents from the shipping container, and check each item for damage. If any item is missing or damaged, contact your Cisco representative or reseller for support. Return all packing material to the shipping container, and save it.
The switch is shipped with these items:
•The Catalyst 3750 Switch Getting Started Guide (Catalyst 3750-24TS, 3750G-24TS-1U, 3750G-24T, 3750G-24TS, 3750-48TS, 3750G-48TS, 3750-24PS, 3750G-24PS, 3750-48PS, 3750G-48PS and 3750G-16TD switches)
•The Catalyst 3750G Integrated Wireless LAN Controller Switch Getting Started Guide (3750G-24WS-S25 and 3750G-24WS-S50 switches)
•The Regulatory Compliance and Safety Information for the Catalyst 3750 Switch
•AC power cord (AC-powered switches)
•DC terminal block plug (DC-powered switches)
•One RJ-45-to-DB-9 adapter cable
•Mounting kit containing:
–Four rubber feet for mounting the switch on a table
–Two 19-inch rack-mounting brackets
–Four Phillips flat-head screws for attaching the brackets to the switch (Catalyst 3750G-24TS switch)
–Six Phillips flat-head screws for attaching the brackets to the switch (Catalyst 3750-24TS, 3750G-24TS-1U, 3750G-24T, 3750-48TS, 3750G-48TS, 3750-24PS, 3750G-12S, 3750G-12S-SD, 3750G-24PS, 3750-48PS, 3750G-48PS, 3750G-16TD, 3750G-24WS-S25, and 3750G-24WS-S50 switches)
–Four Phillips machine screws for attaching the brackets to a rack
–One cable guide and one black Phillips machine screw for attaching the cable guide to one of the mounting brackets
–One RPS connector cover (for wall mounting)
–Two Phillips pan-head screws (for attaching the RPS cover)
–Four Phillips truss-head screws (for wall-mounting brackets)
–StackWise cable: 0.5-meter, 1-meter, or 3-meter cable.
Note If you do not specify the length of the StackWise cable, the 0.5-meter cable is supplied.
Verifying Switch Operation
Before you install the switch in a rack, on a wall, or on a table or shelf, you should power on the switch and verify that the switch passes POST. See the "Running Express Setup" section in the getting started guide for the steps required to connect a PC to the switch and to run Express Setup.
Powering On the Switch and Running POST
If your configuration has an RPS, connect the switch and the RPS to the same AC power source. See the "Power Connectors" section on page 1-25, and see the Cisco RPS documentation for more information.
Note Always set the RPS in standby mode when you are connecting devices to it and in active mode during normal operation.
To power on the switch, connect one end of the AC power cord to the AC power connector on the switch, and connect the other end of the power cord to an AC power outlet.
To power on a DC switch, see Appendix C, "Connecting to DC Power," for complete instructions.
Warning Attach only the Cisco RPS model to the RPS receptacle:
PWR-RPS2300, PWR675-AC-RPS-N1=. Statement 370
As the switch powers on, it begins the POST, a series of tests that runs automatically to ensure that the switch functions properly. POST lasts approximately 1 minute.
When the switch begins POST, the System, the RPS, the Master, the Status, the Duplex, the Speed, and the Stack LEDs turn green. (On the PoE switches, the PoE LED also turns green as POST begins.) The System LED flashes green, and the other LEDs remain continuous green.
When POST completes successfully, the System LED remains green. The RPS LED remains green for some time and then returns to its operating status. The other LEDs turn off and return to their operating status. When POST fails, the System LED turns amber.
Note POST failures are usually fatal. Call Cisco Systems if your switch does not pass POST.
Powering Off the Switch
After a successful POST, disconnect the power cord from the switch. Install the switch in a rack, on a wall, on a table, or on a shelf as described in the "Installing the Switch" section.
Planning the Stack
If you plan to stack your switches, read these sections:
•Planning Considerations
•Powering Considerations
•Cabling Considerations
•Recommended Cabling Configurations
Planning Considerations
Before connecting the Catalyst 3750 switches in a stack, observe these planning considerations:
•Size of the switch. For switch dimensions, see Appendix A, "Technical Specifications." Some switches are deeper than the other switches. Stacking switches of the same size together makes it easier to cable the switches.
•Length of cable. Depending on the configurations that you have, you might need cables of different sizes. If you do not specify the length of the StackWise cable, the 0.5-meter cable is supplied. If you require the 1-meter cable or the 3-meter cable, you can order it from your Cisco supplier. For cable numbers, see the "StackWise Ports" section on page 1-25. The "Recommended Cabling Configurations" section provides examples of recommended configurations.
•Access to the rear ports for unrestricted cabling.
Make sure that you have access to the rear of the rack if you plan 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 concepts and procedures to manage switch stacks, see the switch software configuration guide.
Powering Considerations
Consider the following guidelines before you power on the switches in a stack:
•The sequence in which you initially power on the switches 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 approximately 10 seconds, power on the remaining 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 10-second timeframe. These switches participate in the stack master election. Switches powered up after the 10-second timeframe do not participate in the election.
•Power off a switch before you add it to or remove it from an existing switch stack.
Note 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.
Cabling Considerations
The illustrations in this section display cabling configuration examples that show the stack bandwidth and possible stack partitioning.
Figure 2-1 shows an example of a stack of Catalyst 3750 switches that provides full bandwidth and redundant StackWise cable connections.
Figure 2-1 Example of a Stack with Full Bandwidth Connections
Figure 2-2 shows an example of a stack of Catalyst 3750 switches with incomplete StackWise cabling connections. This stack provides only half bandwidth and does not have redundant connections.
Figure 2-2 Example of a Stack with Half Bandwidth Connections
Figure 2-3 and Figure 2-4 show examples of stacks of Catalyst 3750 switches with failover conditions. In Figure 2-3, the StackWise cable is bad in link B; therefore, this stack provides only half bandwidth and does not have redundant connections. In Figure 2-4, link B is bad; therefore, this stack partitions into two stacks, and switch 1 and switch 3 are stack masters.
Figure 2-3 Example of a Stack with a Failover Condition
Figure 2-4 Example of a Partitioned Stack with a Failover Condition
Recommended Cabling Configurations
This section describes the recommended cabling configurations for stacking the switches.
Stacking Switches in Vertical Racks or on a Table
Figure 2-5 is an example of a recommended configuration using the supplied 0.5-meter StackWise cable. In this example, the switches are stacked in a vertical rack or on a table. This configuration provides redundant connections.
Figure 2-5 Stacking the Switches in a Vertical Rack or on a Table Using the 0.5-meter StackWise Cable
The configuration examples in Figure 2-6 use the 3-meter StackWise cable in addition to the supplied 0.5-meter StackWise cable. This configuration also provides redundant connections.
Figure 2-6 Stacking the Catalyst 3750 Switches in a Vertical Rack or on a Table Using 0.5-meter and 3-meter StackWise Cables
Side-by-Side Mounting in a Rack or on a Wall
Figure 2-7 and Figure 2-8 are examples of recommended configurations where the switches are rack- or wall-mounted side-by-side. Use the 1-meter and 3-meter StackWise cables to connect the switches. These configuration provide redundant connections.
Figure 2-7 Stacking up to Eight Switches in a Side-by-Side Mounting Configuration
Figure 2-8 Stacking Nine Switches in a Side-by-Side Mounting Configuration 90532
Installing the Switch
This section describes these installation procedures:
•Rack-Mounting
•Wall-Mounting
•Table- or Shelf-Mounting
Rack-Mounting
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Warning
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To prevent bodily injury when mounting or servicing this unit in a rack, you must take special precautions to ensure that the system remains stable. The following guidelines are provided to ensure your safety:
•This unit should be mounted at the bottom of the rack if it is the only unit in the rack.
•When mounting this unit in a partially filled rack, load the rack from the bottom to the top with the heaviest component at the bottom of the rack.
•If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing the unit in the rack. Statement 1006
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To install the switch in a 19-inch or 24-inch rack (24-inch racks require optional mounting hardware), follow the instructions described in these procedures:
•Removing Screws from the Switch
•Attaching Brackets to the Catalyst 3750G-24TS Switch
•Attaching Brackets to the Catalyst 3750G Integrated Wireless LAN Controller Switches
•Attaching Brackets to All Other Catalyst 3750 Switches
•Mounting the Switch in a Rack
•Attaching the Cable Guide
Note When you install the switch in a 24-inch rack, an optional bracket kit that is not included with the switch is required. You can order a kit containing the 24-inch rack-mounting brackets and hardware from Cisco. For the Catalyst 3750G-24TS switches, order part number RCKMNT-3550-1.5RU=. For the other Catalyst 3750 switches, order part number RCKMNT-1RU=.
The Catalyst 3750G-24WS-S25 and the 3750G-24WS-S50 switches do not support 24-inch rack-mounting.
Removing Screws from the Switch
If you plan to install the switch in a rack, you must first remove the screws in the switch chassis so that you can attached the mounting brackets.
•Figure 2-9, Figure 2-10, and Figure 2-11 show how to remove the chassis screws in a 1-rack-unit (RU) switch.
•Figure 2-12 shows how to remove the chassis screws in a 1.5-RU switch.
•Figure 2-13 shows how to remove the chassis screws in a 2-RU switch.
Figure 2-9 Removing Screws from the Catalyst 3750-24TS, 3750G-24T, 3750-24PS, 3750-48PS, 3750G-16TD, and 3750-48TS Switches
Figure 2-10 Removing Screws from the Catalyst ,3750G-24TS-1U, 3750G-24PS, 3750G-48PS, and 3750G-48TS Switches
Figure 2-11 Removing Screws from the Catalyst 3750G-12S and 3750-12S-SD Switch
Figure 2-12 Removing Screws from the 3750G-24TS Switch
Figure 2-13 Removing Screws from the 3750G-24WS-S25 and the 3750G-24WS-S50 Switches
Attaching Brackets to the Catalyst 3750G-24TS Switch
The bracket orientation and the brackets that you use depend on whether you are attaching the brackets for a 19-inch or a 24-inch rack.
Figure 2-14 through Figure 2-19 show how to attach each type bracket to one side of the switch. Follow the same steps to attach the second bracket to the opposite side.
Figure 2-14 Attaching Brackets for 19-inch Racks, Front Panel Forward
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Phillips flat-head screws
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Figure 2-15 Attaching Brackets for 24-Inch Racks, Front Panel Forward
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Phillips flat-head screws
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Figure 2-16 Attaching Brackets for 19-Inch Racks, Rear Panel Forward
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Phillips flat-head screws
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Figure 2-17 Attaching Brackets for 24-Inch Racks, Rear Panel Forward
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Phillips flat-head screws
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Figure 2-18 Attaching Brackets for 19-Inch Telco Racks
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Phillips flat-head screws
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Figure 2-19 Attaching Brackets for 24-Inch Telco Racks
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Phillips flat-head screws
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Attaching Brackets to the Catalyst 3750G Integrated Wireless LAN Controller Switches
The wireless LAN controller switches can only be mounted on 19-inch racks. This section describes how to attach 19-inch brackets on the Catalyst 3750G-24WS-S25 and the 3750G-24WS-S50 switches. Figure 2-20, Figure 2-21, and Figure 2-22 show how to attach the bracket to one side of the switch. Follow the same steps to attach the second bracket to the opposite side. For 19-inch racks, use part number 700-21419-XX.
Figure 2-20 Attaching Brackets for 19-Inch Racks, Front Panel Forward
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Phillips flat-head screws
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Figure 2-21 Attaching Brackets for 19-Inch Racks, Rear Panel Forward
Figure 2-22 Attaching Brackets for 19-Inch Telco Racks
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Phillips flat-head screws
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Attaching Brackets to All Other Catalyst 3750 Switches
This section describes how to attach brackets to these Catalyst 3750 switches:
•Catalyst 3750-24TS and Catalyst 3750G-24TS
•Catalyst 3750G-24T
•Catalyst 3750-24FS
•Catalyst 3750G-12S and 3750G-12S-SD
•Catalyst 3750-24PS and Catalyst 3750G-24PS
•Catalyst 3750-48PS and Catalyst 3750G-48PS
•Catalyst 3750G-16TD
•Catalyst 3750-48TS and Catalyst 3750G-48TS
The bracket orientation and the brackets that you use depend on whether you are attaching the brackets for a 19-inch, a 23-inch, a 24-inch rack, or a ETSI rack. Figure 2-23 shows the bracket options.
Figure 2-23 Rack-Mounting Brackets
•For 19-inch racks, use part number 700-08209-XX, and see Attaching Brackets for 19-Inch Racks and 19-Inch Telco Racks.
•For 23-inch racks, use part number 700-21646-XX, and see Attaching Brackets for 23-Inch Racks.
•For 24-inch racks, use part number 700-12398-XX, and see Attaching Brackets for 24-Inch Racks and 24-Inch Telco Racks.
•For ETSI racks, use part number 700-19781XX, and see Attaching Brackets for ETSI Racks.
Attaching Brackets for 19-Inch Racks and 19-Inch Telco Racks
This section shows to attach brackets for 19-inch racks in Figure 2-24 through Figure 2-27. These illustrations show how to attach each type of bracket to one side of the switch. Follow the same steps to attach the second bracket to the opposite side.
Figure 2-24 Attaching Brackets for 19-Inch Racks, Front Panel Forward
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Phillips flat-head screws
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Figure 2-25 Attaching Brackets for 19-Inch Racks, Rear Panel Forward
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Phillips flat-head screws
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Figure 2-26 Attaching Brackets for 19-Inch Racks
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Phillips truss-head screws
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Figure 2-27 Attaching Brackets for 19-Inch Telco Racks
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Phillips flat-head screws
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Attaching Brackets for 23-Inch Racks
This section shows to attach brackets for 23-inch racks in Figure 2-28 and Figure 2-29. These illustrations show how to attach each type of bracket to one side of the switch. Follow the same steps to attach the second bracket to the opposite side.
Figure 2-28 Attaching Brackets for 23-Inch Racks, Front Panel Forward
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Phillips flat-head screws
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Figure 2-29 Attaching Brackets for 23-Inch Racks, Rear Panel Forward
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Phillips flat-head screws
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Attaching Brackets for 24-Inch Racks and 24-Inch Telco Racks
This section shows to attach brackets for ESTI racks in Figure 2-30, Figure 2-31, and Figure 2-32. These illustrations show how to attach each type of bracket to one side of the switch. Follow the same steps to attach the second bracket to the opposite side.
Figure 2-30 Attaching Brackets for 24-Inch Racks, Front Panel Forward
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Phillips flat-head screws
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Figure 2-31 Attaching Brackets for 24-Inch Racks, Rear Panel Forward
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Phillips flat-head screws
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Figure 2-32 Attaching Brackets for 24-Inch Telco Racks
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Phillips flat-head screws
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Attaching Brackets for ETSI Racks
This section shows to attach brackets for ESTI racks in Figure 2-33 and Figure 2-34. These illustrations show how to attach each type of bracket to one side of the switch. Follow the same steps to attach the second bracket to the opposite side.
Figure 2-33 Attaching Brackets for ESTI Racks, Front Panel Forward
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Phillips flat-head screws
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Figure 2-34 Attaching Brackets for ETSI Racks, Rear Panel Forward
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Phillips flat-head screws
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Mounting the Switch in a Rack
After the brackets are attached to the switch, use the four supplied number-12 Phillips machine screws to securely attach the brackets to the rack, as shown in Figure 2-35, Figure 2-36 and Figure 2-37.
Figure 2-35 Mounting the Catalyst 3750G-24TS Switch in a Rack
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Phillips machine screws
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Figure 2-36 Mounting the Other Catalyst 3750 Switches in a Rack
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Phillips machine screws
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Figure 2-37 Mounting the Catalyst 3750G-24WS-S25 and 3750G-24WS-S50 Switches in a Rack
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Phillips machine screws
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After you mount the switch in the rack, you might need to perform these tasks to complete the installation, to run the setup program, and to access the switch:
•(Optional) Connect the switches in the stacks. See the "Connecting StackWise Cable to StackWise Ports" section.
•Power on the switch. See the "Verifying Switch Operation" section. If the switches are stacked, see the "Planning Considerations" section for information on powering considerations.
•Connect to a 10/100 or 10/100/1000 port and run Express Setup. See the Catalyst 3750 Switch Getting Started Guide for instructions.
•Connect to the front-panel ports. See the "Connecting to the 10/100 and 10/100/1000 Ports" section and the "Connecting to an SFP Module" section to complete the installation.
For configuration instructions about using the CLI setup program, go to Appendix D, "Configuring the Switch with the CLI-Based Setup Program."
To use the CLI, enter commands at the Switch> prompt through the console port by using a terminal program or through the network by using Telnet. For configuration information, see the switch software configuration guide or the switch command reference.
Attaching the Cable Guide
We recommend attaching the cable guide to prevent the cables from obscuring the front panel of the switch and the other devices installed in the rack. Use the supplied black screw, as shown in Figure 2-38, Figure 2-39 and Figure 2-40 to attach the cable guide to the left or right bracket.
Figure 2-38 Attaching the Cable Guide on the 24-Port Catalyst 3750 Switches
Note The 48-port Catalyst 3750 switches ship with the cable guide shown in Figure 2-39. This cable guide secures up to 48 cables. Use the supplied black screw to mount it on the left bracket.
Figure 2-39 Attaching the Cable Guide on the 48-Port Catalyst 3750 Switches
Figure 2-40 Attaching the Cable Guide on the Catalyst 3750 Integrated Wireless LAN Controller Switches
Wall-Mounting
To install the switch on a wall, follow the instructions in these procedures:
•Attaching the Brackets to the Switch for Wall-Mounting
•Attaching the RPS Connector Cover
•Mounting the Switch on a Wall
Note The illustrations in this section show the Catalyst 3750G-24TS switch as an example. All the Catalyst 3750 switches are wall-mounted following the same procedures.
Note Do not wall-mount the Catalyst 3750G-24WS-S25 and Catalyst 3750G-24WS-S50 switches.
Attaching the Brackets to the Switch for Wall-Mounting
Figure 2-41 shows how to attach a 19-inch bracket to one side of the switch. Follow the same steps to attach the second bracket to the opposite side.
Figure 2-41 Attaching the 19-inch Brackets for Wall-Mounting
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Phillips truss-head screws
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Attaching the RPS Connector Cover
If you are not using an RPS with your switch, use the two Phillips pan-head screws to attach the RPS connector cover to the back of the switch, as shown in Figure 2-42.
Warning If an RPS is not connected to the switch, install an RPS connector cover on the back of the switch. Statement 265
Figure 2-42 Attaching the RPS Connector Cover on the Catalyst 3750 Switch
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Phillips pan-head screws
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3
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RPS connector
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2
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RPS connector cover
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Mounting the Switch on a Wall
For the best support of the switch and cables, make sure the switch is attached securely to wall studs or to a firmly attached plywood-mounting backboard. Mount the switch with the front panel facing up, as shown in Figure 2-43.
Warning To comply with safety regulations, mount the switches on a wall with the front panel facing up. Statement 266
Figure 2-43 Mounting the Switch on a Wall
After the switch is mounted on the wall, you might need to perform these tasks to complete the installation, run the setup program, and access the switch:
•(Optional) Connect the switches in the stacks. See the "Connecting StackWise Cable to StackWise Ports" section.
•Power on the switch. See the "Verifying Switch Operation" section. If the switches are stacked, see the "Planning Considerations" section for information on powering considerations.
•Connect to a 10/100 or 10/100/1000 port and run Express Setup. See the Catalyst 3750 Switch Getting Started Guide for instructions.
•Connect to the front-panel ports. See the "Connecting to the 10/100 and 10/100/1000 Ports" section and the "Connecting to an SFP Module" section to complete the installation.
For configuration instructions about using the CLI setup program, go to Appendix D, "Configuring the Switch with the CLI-Based Setup Program."
To use the CLI, enter commands at the Switch> prompt through the console port by using a terminal program or through the network by using Telnet. For configuration information, see the switch software configuration guide or the switch command reference.
Table- or Shelf-Mounting
Follow these steps to install the switch on a table or shelf:
Step 1 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 unit.
Step 2 Place the switch on the table or shelf near an AC power source.
After the switch is mounted on the table, you might need to perform these tasks to complete the installation, run the setup program, and access the switch:
•(Optional) Connect the switches in the stacks. See the "Connecting StackWise Cable to StackWise Ports" section.
•Power on the switch. See the "Verifying Switch Operation" section. If the switches are stacked, see the "Planning Considerations" section for information on powering considerations.
•Connect to a 10/100 or 10/100/1000 port and run Express Setup. See the Catalyst 3750 Switch Getting Started Guide for instructions.
•Connect to the front-panel ports. See the "Connecting to the 10/100 and 10/100/1000 Ports" section and the "Connecting to an SFP Module" section to complete the installation.
For configuration instructions about using the CLI setup program, go to Appendix D, "Configuring the Switch with the CLI-Based Setup Program."
To use the CLI, enter commands at the Switch> prompt through the console port by using a terminal emulation program or through the network by using Telnet. For configuration information, see the switch software configuration guide or the switch command reference.
Connecting StackWise Cable to StackWise Ports
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 Insert one end of the StackWise cable into the StackWise port on the back of the switch. (See Figure 2-44.)
Note Always use a Cisco-approved StackWise cable to connect the switches.
Figure 2-44 Inserting the StackWise Cable in a StackWise Port
Step 3 Use the window in the StackWise cable to align the connector correctly. Secure the screws tightly.
Step 4 Insert the other end of the cable into the connector of the other switch, and secure the screws tightly.
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.
Replace the dust covers on the connectors to protect them from dust when you are not using them.
When you need to remove the StackWise cable from the connector, make sure to fully unscrew the screws before removing the connector. Make sure that you also remove the correct screws from the StackWise port.
Figure 2-45 shows the correct removal procedure.
Figure 2-45 Correct Removal of the StackWise Cable from a StackWise Port
Caution Do not remove the cable by using the procedure shown in
Figure 2-46.
Figure 2-46 Incorrect Removal of a StackWise Cable from a StackWise Port
Installing and Removing SFP Modules
These sections describe how to install and remove SFP modules. SFP modules are inserted into SFP module slots on the front of the Catalyst 3750 switches. These field-replaceable modules provide uplink interfaces.
You can use any combination of SFP modules. See the Catalyst 3750 release notes for the list of SFP modules that the Catalyst 3750 switch supports. Each port must match the wave-length specifications on the other end of the cable, and the cable must not exceed the stipulated cable length for reliable communications. See the "Installation Guidelines" section for cable stipulations for SFP connections.
Use only Cisco SFP modules on the Catalyst 3750 switch. Each SFP module has an internal serial EEPROM that is encoded with security information. This encoding provides a way for Cisco to identify and validate that the SFP module meets the requirements for the switch.
For detailed instructions on installing, removing, and cabling the SFP module, see your SFP module documentation.
Installing SFP Modules into SFP Module Slots
Figure 2-47 shows an SFP module that has a bale-clasp latch.
Caution We strongly recommend that you do not install or remove fiber-optic SFP modules with cables attached because of the potential damage to the cables, the cable connector, or the optical interfaces in the SFP module. Disconnect all cables before removing or installing an SFP module.
Removing and installing an SFP module can shorten its useful life. Do not remove and insert SFP modules more often than is absolutely necessary.
Figure 2-47 SFP Module with a Bale-Clasp Latch
To insert an SFP module into the SFP module slot, follow these steps:
Step 1 Attach an ESD-preventive wrist strap to your wrist and to a bare metal surface on the chassis.
Step 2 Find the send (TX) and receive (RX) markings that identify the top side of the SFP module.
Note 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 Align the SFP module in front of the slot opening.
Step 4 Insert the SFP module into the slot until you feel the connector on the module snap into place in the rear of the slot.
Figure 2-48 Installing an SFP Module into an SFP Module Slot
Step 5 For fiber-optic SFP modules, remove the dust plugs from the optical ports, and store them for later use.
Caution Do not remove the dust plugs from the fiber-optic 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.
Step 6 Insert the cable connector into the SFP module:
•For fiber-optic SFP modules, insert the LC or MT-RJ cable connector into the SFP module.
•For copper SFP modules, insert the RJ-45 cable connector into the SFP module.
Note When you connect to 1000BASE-T SFP modules, be sure to use a twisted four-pair, Category 5 or later cable.
Removing SFP Modules from SFP Module Slots
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 on the chassis.
Step 2 Disconnect the cable from the SFP module.
Tip For reattachment, note which cable connector plug is send (TX) and which is receive (RX).
Step 3 Unlock and remove the SFP module, as shown in Figure 2-49.
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.
Figure 2-49 Removing a Bale-Clasp Latch SFP Module by Using a Flat-Blade Screwdriver
Step 4 Grasp the SFP module between your thumb and index finger, and carefully remove it from the module slot.
Step 5 For fiber-optic SFP modules, insert a dust plug into the optical ports of the SFP module to keep the optical interfaces clean.
Step 6 Place the removed SFP module in an antistatic bag or other protective environment.
Installing and Removing XENPAK Modules (Catalyst 3750G-16TD Switch)
These sections describe how to install and remove XENPAK modules:
•Removing SFP Modules from SFP Module Slots
•Removing a XENPAK Module
XENPAK modules are inserted into the XENPAK module slot on the front panel of the Catalyst 3750G-16TD switch. These field-replaceable transceiver modules provide 10-Gigabit interfaces.
Note The 10-Gigabit Ethernet XENPAK modules are referred to as 10-Gigabit Ethernet module ports in the switch software documentation.
See the Catalyst 3750 release notes for the list of XENPAK modules that the Catalyst 3750G-16TD switch supports. Use only Cisco XENPAK modules on the Catalyst 3750G-16TD switch. Each XENPAK module has an internal serial EEPROM that is encoded with security information. This encoding provides a way for Cisco to identify and validate that the XENPAK module meets the requirements for the switch.
See Table B-2 on page B-4 for cable requirements for XENPAK module connections. For detailed instructions on installing, removing, cabling, and troubleshooting the XENPAK module, see your XENPAK module documentation.
Installing a XENPAK Module
Figure 2-50 shows a XENPAK module.
Caution We strongly recommend that you do not install or remove fiber-optic XENPAK modules with cables attached because of the potential damage to the cables, the cable connector, or the optical interfaces in the XENPAK module. Disconnect all cables before removing or installing the XENPAK module.
Caution Do not remove the dust plugs from the fiber-optic XENPAK module or the rubber caps from the fiber-optic cable until you are ready to connect the cable. The plugs and caps protect the XENPAK module ports and cables from contamination and ambient light.
Figure 2-50 XENPAK Module
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Captive installation screw
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Sending optical bore
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Optical bore dust plug
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