Cisco 2900 - Catalyst Expansion Module User manual

CHAPTER
Rack-Mounting Instructions 3-1
3
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
1
100Mbps
LINK
1%
100%
RESET
FAN
PS
SWITCH
LOAD
3
2
100Mbps
LINK
4
100Mbps
LINK
5
100Mbps
LINK
6
100Mbps
LINK
MDI X
MDI X
MII
MII
MDI X
100 Mbps
LINK
PORT
1
100 Mbps
LINK
7
PORT
2
100Mbps
LINK
8
100Mbps
LINK
9
100Mbps
LINK
10
100Mbps
LINK
11
100Mbps
LINK
12

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
1
100Mbps
LINK
1%
100%
RESET
FAN
PS
SWITCH
LOAD
3
2
100Mbps
LINK
4
100Mbps
LINK
5
100Mbps
LINK
6
100Mbps
LINK
MDI X
MDI X
MII
MII
MDI X
100 Mbps
LINK
PORT
1
100 Mbps
LINK
7
PORT
2
100Mbps
LINK
8
100Mbps
LINK
9
100Mbps
LINK
10
100Mbps
LINK
11
100Mbps
LINK
12

3-8 Catalyst 2900 User Guide
Installing the Chassis in the Rack