Rack-Mounting Guidelines - Cisco Catalyst 4900 Series Installation Manual

Chapter 3 Installing the Switch
Warning

Rack-Mounting Guidelines

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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.
Before rack-mounting the switch, ensure the following:
The equipment rack is the proper size.
•
The width of the rack, between the two front mounting strips or rails,
–
must be 17.75 inches (45.09 cm).
The depth of the rack, between the front and rear mounting strips, must
–
be at least 19.25 inches (48.9 cm) but not more than 32 inches (81.3 cm).
The rack must have sufficient vertical clearance to insert the chassis. The
–
chassis height is 1.75 inches (4.45 cm).
The equipment rack is stable and in no danger of falling over.
•
– Ensure that the shelf is constructed to support the weight and dimensions
of the chassis. For physical specifications, see
"Specifications."
We recommend that you bolt the rack to the floor.
–
– Mount the unit at the bottom of the rack if it is the only unit in the rack.
Install heavier equipment in the lower half of the rack to maintain a low
–
center of gravity and prevent the rack from becoming top-heavy and
tipping over.
Statement 1006
Catalyst 4900 Series Switch Installation Guide
Rack-Mounting the Switch
Appendix A,
3-3