The process of installing the switch can be broken down into a series of tasks, which are described in the following table.

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

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

To prevent personal injury or damage to the chassis, never attempt to lift or tilt the chassis using the handles on modules (such as power supplies, fans, or cards); these types of handles are not designed to support the weight of the unit. Statement 1032

Warning

Hazardous voltage or energy is present on the backplane when the system is operating. Use caution when servicing. Statement 1034

Warning

This product requires short-circuit (overcurrent) protection, to be provided as part of the building installation. Install only in accordance with national and local wiring regulations. Statement 1045

Warning

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

Warning

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

Warning

Invisible laser radiation may be emitted from disconnected fibers or connectors. Do not stare into beams or view directly with optical instruments. Statement 1051

Before starting the installation procedures in this chapter, see the “Site Preparation Checklist” section on page 2-15 to verify that all site planning activities were completed.

Note	The switch is designed to be installed in standard 19-inch racks.

Before rack-mounting the switch, ensure that the equipment rack complies with the following guidelines:

• The width of the rack, measured between the two front-mounting strips or rails, must be one of the following measurements:

  • 17.5 inches (44.45 cm)

  • 17.75 inches (45.09 cm)

• The depth of the rack, measured between the front- and rear-mounting strips, must be at least 19.25 inches (48.9 cm).

• The rack must have sufficient vertical clearance to insert the chassis: 8.75 inches (22.23 cm) (5 RU)

Note	Chassis height is sometimes measured in rack units (RU or just U) where 1 RU or 1 U equals 1.75 in (44.45 mm). A typical server rack is 42 RU or 42 U in height.

Caution

If the rack is on wheels, ensure that the brakes are engaged and that the rack is stabilized.

Warning

Stability hazard. The rack stabilizing mechanism must be in place, or the rack must be bolted to the floor before you slide the unit out for servicing. Failure to stabilize the rack can cause the rack to tip over. Statement 1048

Warning

To prevent bodily injury when mounting or servicing this unit in a rack, you must take special precautions to ensure that the system remains stable. The following guidelines are provided to ensure your safety: This unit should be mounted at the bottom of the rack if it is the only unit in the rack. When mounting this unit in a partially filled rack, load the rack from the bottom to the top with the heaviest component at the bottom of the rack. If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing the unit in the rack. Statement 1006

Note

To maintain proper air circulation through the Catalyst switch chassis, you should maintain a recommended separation of a minimum of 6 inches (15 cm) between a wall and the chassis air intake or a wall and the chassis air exhaust. You should also allow a minimum separation of 12 inches (30.5 cm) between the hot air exhaust on one chassis and the air intake on another chassis. Failure to maintain adequate air space can cause the chassis to overheat and the system to fail.

Note	Do not discard the shipping container when you unpack the switch. Flatten the shipping cartons and store them with the pallet. You will need these containers if you need to move or ship the switch in the future.

Check the contents of the accessory kit. Verify that you received all listed equipment, which should include the following:

• Grounding lug and disposable ESD strap.

• Optional equipment that you ordered, such as console cables, transceivers, or special connectors.

• Blank covers are installed for the port card slots and power supply slots on the chassis.

• Rack-mount shelf kit is provided that includes brackets and a tray to support the chassis when it is installed on a rack.

The chassis ships with an accessory kit, which includes chassis installation kits and cable guides:

• Standard 19-inch rack-mount L brackets (factory-installed on the chassis). Associated rack-mounting hardware is included in the accessory kit.

• 5 RU rack-mount shelf kit is included in the accessory kit.

• Two cable management guides are included in the accessory kit.

The switch chassis is designed to be installed in a standard 19-inch rack, either open or enclosed. The chassis is shipped with the 19-inch rack-mount L brackets that are factory installed on the left-front and right-front of the chassis. Screws are included with the accessory kit that are used to secure the chassis in the rack enclosure.

Note

Depending on the manufacturer, the rack posts might be prethreaded to accept either 10-32 or 12-24 screws. If the rack posts are not prethreaded, you must install 10-32 or 12-24 clip nuts or cage nuts to secure the rack-mount screws. The clip nuts or the cage nuts are not included as part of the accessory kit and must be obtained on your own.

The accessory kit also contains the following chassis installation kits:

• Rack-mount shelf kit. The rack-mount shelf kit is used to support the weight of the chassis.

• Cable guides— Two cable guides can be installed on the front of the chassis using the same sets of screws that secure the chassis rack-mount brackets to the rack posts.

The switch chassis is shipped with two L brackets installed toward the front of each side of the chassis, as shown in the following figure.

Figure 1. Brackets on the Switch Chassis

Before installing the chassis, you should install the rack-mount shelf kit that is included as part of the accessory kit. The rack-mount shelf kit is shipped as part of the switch accessory kit. It contains two shelf brackets, a crossbar, and screws. The shelf brackets attach directly to the rack and help support the weight of the chassis.

Note	The chassis are designed to be mounted in equipment racks that meet ANSI/EIA 310-D and ETS 300-119 standards.

Step 1	Before rack-mounting the chassis, determine if you need to move the L brackets so that the chassis is installed in one of the recommended positions: Positioned so the front of the chassis is approximately flush with the front of the rack: The chassis is shipped with the L brackets in the correct location; there is no need to move them. Positioned so approximately one fourth of the chassis protrudes in front of the rack: Remove the screws in the L brackets. Reposition the L brackets to align with the first set of holes behind the holes where the L brackets were originally installed (see figure below). Secure the brackets with the screws. Positioned so approximately one half of the chassis protrudes in front of the rack: Remove the screws in the L brackets. Reposition the L brackets to align with the second set of holes behind the holes where the L brackets were originally installed (see figure below). Secure the brackets with the screws. Figure 19. Locations of Screw Holes for Alternate Chassis Installation Positions 1 Left L bracket already attached. When the chassis is installed, the front of the chassis is approximately flush with the front of the rack. 3 Screw holes for reattaching the L brackets. When the chassis is installed, approximately one quarter of it protrudes in front of the rack. 2 Right L bracket already attached. When the chassis is installed, the front of the chassis is approximately flush with the front of the rack. 4 Screw holes for reattaching the L brackets. When the chassis is installed, approximately one half of it protrudes in front of the rack.
Step 2	With a person standing at each side of the chassis, each person supports the chassis by placing one hand in the handhold on the side of the chassis (see figure above) and using the other hand under the back of the chassis for balance. Slowly lift the chassis together. Avoid sudden twists or moves to prevent injury.
Step 3	Rest the back end of the chassis on the rack-mount shelf and carefully slide the chassis into the rack until the L brackets meet the front rails of the rack system.
Step 4	Locate the rack post holes that align with the chassis L bracket holes. If the rack post holes are prethreaded, determine if the threads are 10-32 or 12-24. If the rack post holes are unthreaded, install eight or ten (four or five on each side) either 10-32 or 12-24 clip or cage nuts over the rack post holes to accept the installation screws. Note    Clip nuts or cage nuts are not included as part of the accessory kit that comes with the chassis. You must obtain them yourself.
Step 5	If you want to install one or both of the optional cable guide assemblies, position the cable guides so that the cable guide mounting holes are aligned with L bracket holes as shown in figure below. Figure 20. Installing the Cable Mount Guides 1 Cable guide
Step 6	Install all eight 10-32 or 12-24 screws (four on each side) through the cable guide mounting holes, rack-mount L bracket holes, rack post holes, and into the clip nuts to secure the cable guides and the chassis to the rack post. Tighten the screws securely.
Step 7	Secure the chassis using four screws through the holes in the L bracket and into the rack post holes. Figure 21. Installing the Cable Mount Guides 1 10-32 or 12-24 screws

After installing the chassis in its location, complete the installation process by following these procedures:

• Connecting the chassis to system ground. See Establishing the System Ground.

• Installing and connecting the power supplies to source power. For information on how to install and cable power supplies, see the Installing Power Supplies.

• Connecting to the switch console port. See Connecting the Switch Console Port.

• Connecting to the uplink ports. Installing SFP and SFP+ Transceiver Modules

• Powering-up the chassis and verifying the installation. See Verifying Switch Chassis Installation.

This section describes how to connect a system ground to the switch.

Caution

Installations that rely solely on system grounding using only an AC third-prong ground run a substantially greater risk of equipment problems and data corruption than those installations that use both the AC third-prong ground and a properly installed system ground.

The system ground provides additional grounding for EMI shielding requirements and grounding for the low voltage supplies (DC-DC converters) on the modules. You must observe the following system grounding guidelines for your chassis:

• You must install the system ground connection with any other rack or system power ground connections that you make. The system ground connection is required if FXS modules are installed or if this equipment is installed in a U.S. or European Central Office.

• You must connect both the system ground connection and the power supply ground connection to an earth ground. The system ground connection is required if FXS modules are installed or if this equipment is installed in a U.S. or European Central Office.

• When using DC-input power supplies, you must install the system (ground before you attach the source DC power cables to the DC PEM. Power down the chassis before attaching the system ground.

Note

In all situations, grounding practices must comply with Section 250 of the National Electric Code (NEC) requirements or local laws and regulations. A 6 AWG grounding wire is preferred from the chassis to the rack ground or directly to the common bonding network (CBN). The equipment rack should also be connected to the CBN with 6 AWG grounding wire.

Note	The system ground serves as the primary safety ground for chassis that are equipped with DC-input power supplies. The DC-input power supplies for these chassis do not have a separate ground.

The chassis power supplies (AC or DC) might be shipped separately from the switch chassis. Remove the power supply from its shipping packaging, and then install and connect it to the site power by referring to Installing Power Supplies.

Note	AC-input and DC-input power supplies can be mixed in a chassis.

The modular port card is optional and might be shipped separately from the switch chassis. Remove the port card from its shipping packaging, and then install it, see the Installing a Modular Port Card section.

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

For Cisco SFP and SFP+ transceiver modules documentation, including compatibility matrixes, refer to this URL: http:/​/​www.cisco.com/​en/​US/​products/​hw/​modules/​ps5455/​products_​device_​support_​tables_​list.html

The switch running Cisco IOS has many levels of online diagnostic capabilities. The online diagnostics are divided into four categories:

• Bootup—Bootup diagnostics automatically run during bootup, module OIR, or switchover to a backup supervisor engine.

• Background health—Monitoring diagnostic tests are continuously run by the system to monitor system health.

• On-demand online diagnostics—On-demand online diagnostics can be used to run any test from the CLI. You can also run on-demand online diagnostics to perform a sanity check on the system hardware. Some of these tests are disruptive and will impact traffic flow.You must follow the on-demand diagnostic guidelines exactly to avoid false failures.

• Scheduled diagnostics—Scheduled diagnostics can be used to run any of the above tests at user-designated intervals.

For complete information on the online diagnostic tests and how to run them, refer to the software configuration guide.