Cisco MGX MGX 8800 Hardware Installation Manual page 337

Chapter 3 Preparing for Installation
The MGX 8830 or MGX 8830/B switch and components fit in either a 19-inch (48.26 cm) wide rack or
a 23-inch (58.42 cm) wide rack (with extenders installed). See
requirements within the rack.
Table 3-17
Component
MGX 8830 or MGX 8830/B
switch
AC power supply tray (optional)
Plan so that the rack accommodates your needs. An AC-powered MGX 8830 or MGX 8830/B switch
occupies 14.00 inches (35.56 cm or 8 RUs) of vertical space. A DC-powered MGX 8830 or MGX
8830/B switch occupies 12.25 inches (31.12 cm or 7 RUs) of vertical space.
In a central office (CO) and private enterprise (PE) environment, the total amount of rack space should
Note
not exceed 42 RUs. If your total configuration exceeds 42 RUs, either replan your configuration or use
more than one rack to house the switch components.
The location of the Cisco MGX switch and the layout of your rack or wiring room are extremely
important for proper system operation. If equipment items are too close together, ventilation might be
inadequate, and panels might become inaccessible. As a result, the system might malfunction or even
shut down, and maintenance and repair are made more difficult.
A Cisco MGX switch requires access space around the cabinet. The suggested clearance at the front and
the back of the cabinet is 30 inches (76.20 cm). The suggested clearance on each side of the cabinet is
12 inches (30.48 cm).
A vertical gap of 0.047 to 0.077 inch (0.119 to 0.196 cm) or about 1/16 inch must exist between adjacent
Note
modules to allow for module removal.
Position the switch so that it does not interfere with the routing of cables and the termination of
telephone or carrier circuits. Raised flooring is recommended so that there is enough space under the
flooring for cables and wiring.
When planning your site layout and equipment locations, keep in mind the precautions that are described
in the
8830/B Switch" section on page
can reduce the possibility of environmentally caused shutdowns. If you are currently experiencing
shutdowns or unusually high error rates with your existing equipment, these precautions might help you
isolate the cause of failures and prevent future problems.
Releases 2 - 5.2, Part Number OL-4545-01, Rev. H0, May 2006
MGX 8830 or MGX 8830/B Rack Space Requirements
"Safety Requirements" section on page 3-2
Site Requirements for a MGX 8830 or MGX 8830/B Switch
Rack Space Height
7 RUs 12.25 in. (31.12 cm)
1 RU 1.75 in. (4.45 cm)
and the "Site Requirements for a MGX 8830 or MGX
3-41. These precautions can help you to avoid equipment failures and
Cisco MGX 8800/8900 Series Hardware Installation Guide
Table 3-17 for component space
Depth
23.5 in. (59.69 cm)
23.5 in. (59.69 cm)
3-45