Cisco 2900 - Catalyst Expansion Module Bedienungsanleitung

CHAPTER

Rack-Mounting Instructions 3-1

Rack-Mounting Instructions

This chapter describes the procedures to rack-mount the Catalyst 2900 at your site.

A rack-mount kit is included for mounting the switch in a standard 19-inch equipment rack

with two unobstructed outer posts. This kit is not suitable for use with other racks, such as

telco-type equipment racks, or those with obstructions (such as a power strip) that could

impair access to the switch modules and power supplies.

Caution Before installing the chassis in a rack, read the section “Safety with Electricity”

in the chapter “Installation Overview” to familiarize yourself with the proper site and

environmental conditions. Failure to read and follow these guidelines could lead to an

unsuccessful installation and possible damage to the system and components.

Rack-Mounting the Switch

Use the following procedure for attaching the rack-mount kit and installing the switch in a

wiring closet rack. Two or more people are needed to perform this procedure.

Be sure you have at least three or four feet of clearance behind the rack for maintenance.

The intake and exhaust ports for cooling air are located on the front and rear and both sides

of the chassis, so multiple switches can be stacked with little or no clearance in a rack. The

chassis is 3.4 inches (8.5 cm) high.

3-2 Catalyst 2900 User Guide

Tools for Installation

Before rack-mounting the Catalyst 2900, conﬁrm that your rack-mount conﬁguration

conforms to the following criteria:

•If the switch is installed in a closed or multiunit rack assembly, the ambient operating

temperature of the rack environment may be higher than the ambient room temperature.

The ambient temperature of the rack environment must not exceed a maximum

temperature of 104F (40C).

•Airﬂow around the rack must be sufﬁcient to maintain proper cooling of the switch.

Caution Before you mount the switch in a rack, make sure of the following: the rack is

secure and in no danger of falling over; the area around the rack does not exceed a

maximum ambient temperature of 104F (40C); suf ﬁcient airﬂow exists around the rack.

Warning Two people are required to lift the chassis. Grasp the chassis underneath the

lower edge and lift with both hands. To prevent injury, keep your back straight and lift with

your legs, not your back. To prevent damage to the chassis and components, never attempt

to lift the chassis with the handles on the power supplies or on the interface processors, or

by the plastic panels on the front of the chassis. These handles were not designed to support

the weight of the chassis.

•Install the switch in the rack to ensure that heavier equipment is at the bottom of the rack

to maintain a low center of gravity and prevent the rack from becoming top-heavy and

tipping over.

Refer to the section “Lifting the Chassis Safely” in the chapter “Installation Overview.”

Tools for Installation

The following are tools and equipment you will need to install the chassis:

•Number 1 and number 2 Phillips screwdrivers to tighten the captive installation screws

on most systems

•3/16-inch ﬂat-blade screwdriver for the captive installation screws on the supervisor

engine module and switch modules in some systems

Rack-Mounting Instructions 3-3

Installing the L Brackets

•Antistatic mat or antistatic foam in case you need to remove switch modules to

troubleshoot the installation

•Your own ESD grounding strap or the disposable ESD strap included with the system

If you are installing the chassis in a rack, you will also need the following:

•Rack-mount kit

•Tape measure and level

Installing the L Brackets

The rack-mount kit is for a standard 19-inch rack with a minimum depth (between the front

and rear mounting posts) of 19 1/4 inches and a maximum depth of 32 inches. The width

between the two front equipment mounting strips (left front and right front) must be at least

17 3/4 inches. Two L brackets, which you attach to either the front or back of the chassis,

and the mounting posts connect the chassis to the rack. Some equipment racks provide a

power strip along the length of one of the rear posts. If your rack has this feature, consider

the position of the strip when planning fastener points, and before you install the L brackets

on the chassis, determine whether you will install the chassis from the front or the rear of

the rack.

Take the following steps to attach the two L brackets to the switch chassis:

Step 1 Place the chassis on the ﬂoor or on a sturdy table as close as possible to the rack,

with clearance to allow you to move around the chassis.

Step 2 Use a tape measure to measure the depth of the rack. Measure from the outside of

the front mounting posts to the outside of the rear mounting strip. The depth must

be at least 19 1/4 inches, but not greater than 32 inches.

Step 3 Measure the space between the inner edges of the left front and right front

mounting posts to ensure that it is 17 3/4 inches wide. (The chassis is

17 1/4 inches wide and must ﬁt between the mounting posts.)

Step 4 Open the rack-mount kit and refer to the component checklist in Table 3-1 to

verify that all parts are included.

3-4 Catalyst 2900 User Guide

Installing the L Brackets

Table 3-1 Rack-Mount Kit Checklist

Step 5 Remove the six cover attachment screws from either the front or the rear of the

switch depending on your installation. See Figure 3-1.

Note Figure 3-1, Figure 3-2, and illustrate attaching the rear of the switch to the rack. You

can also attach the front of the switch to the rack, depending on the conﬁguration of your

rack.

Figure 3-1 Attaching the L Bracket

Quantity Part Description Received

2 L brackets (left and right)

12 M4 Phillips countersunk-head screws

6 12-24 x 3/4-inch Phillips binder-head screws

6 10-32 x 3/4-inch slotted binder-head screws

H1343a

DTE

DCE

H6394

STATUS

CONSOLE

100Mbps

LINK

10/100Mbps FAST ETHERNET SWITCHING

SUPERVISOR ENGINE

SYSTEM

STATUS

100Mbps

LINK

100Mbps

LINK

100%

RESET

FAN

SWITCH

LOAD

100Mbps

LINK

100Mbps

LINK

100Mbps

LINK

100Mbps

LINK

MDI X

MII

MDI X

100 Mbps

LINK

PORT

100 Mbps

LINK

PORT

100Mbps

LINK

100Mbps

LINK

100Mbps

LINK

100Mbps

LINK

100Mbps

LINK

Rack-Mounting Instructions 3-5

Installing the Chassis in the Rack

Step 6 Attach the left and right L brackets using the six M4 Phillips countersunk-head

screws provided in the rack-mount kit.

Note No shelf is required with this assembly; the L brackets support the chassis in the

rack.

Installing the Chassis in the Rack

The L brackets attach the chassis to the front mounting posts. You can mount the L brackets

on either the front or rear of the chassis, whichever end will be in the front of the rack.

Follow these steps to install the switch in an open rack that enables you to slide the chassis

in from the front.

Warning Two people are required to lift the chassis. Grasp the chassis underneath the

lower edge and lift with both hands. To prevent injury, keep your back straight and lift with

your legs, not your back. To prevent damage to the chassis and components, never attempt

to lift the chassis with the handles on the power supplies or on the interface processors, or

by the plastic panels on the front of the chassis. These handles were not designed to support

the weight of the chassis. To see translated versions of this warning, refer to the appendix

“Translated Safety Warnings.”

Step 1 Two people are required to perform this step.While referring to Figure 3-2, with a

person positioned at either side of the chassis, grasp the bottom edge of the chassis

with one hand near the front and the other near the back. Slowly lift the chassis in

unison. Avoid sudden twists or moves to prevent injury.

Step 2 Position the chassis in the rack as follows:

•If the chassis front panel will be in the front of the rack, insert the rear of the

chassis between the rack posts, and align the four mounting holes in the L

bracket with four mounting holes in the equipment rack.

3-6 Catalyst 2900 User Guide

Installing the Chassis in the Rack

•If the rear of the chassis will be in the front of the rack, insert the front of the

chassis between the mounting posts, and align the four mounting holes in the

L bracket with the four mounting holes in the equipment rack.

Step 3 A third person should install the ten-32 x 3/4 inch slotted binder-head mounting

screws through the elongated holes in the L bracket and into the threaded holes in

the mounting post.

Step 4 Use your tape measure and level to ensure that the chassis is installed straight and

level.

Step 5 Make sure that your path to the rack is unobstructed.

Warning Use your tape measure and level to ensure that the chassis is installed straight

and level.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.

This concludes the rack-mount installation.

Rack-Mounting Instructions 3-7

Installing the Chassis in the Rack

Figure 3-2 Installing the Switch in the Rack

H6396

STATUS

CONSOLE

100Mbps

LINK

10/100Mbps FAST ETHERNET SWITCHING

SUPERVISOR ENGINE

SYSTEM

STATUS

100Mbps

LINK

100Mbps

LINK

100%

RESET

FAN

SWITCH

LOAD

100Mbps

LINK

100Mbps

LINK

100Mbps

LINK

100Mbps

LINK

MDI X

MII

MDI X

100 Mbps

LINK

PORT

100 Mbps

LINK

PORT

100Mbps

LINK

100Mbps

LINK

100Mbps

LINK

100Mbps

LINK

100Mbps

LINK

3-8 Catalyst 2900 User Guide

Installing the Chassis in the Rack

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