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Cisco MGX 8800/8900 Series Hardware Installation Guide
Releases 2 - 5.2, Part Number OL-4545-01, Rev. H0, May 2006
Chapter 5 Installing the Cisco MGX Switch or Gateway
Installing the MGX 8850 (PXM1E/PXM45) Switch, MGX 8850/B or MGX 8880 Media Gateway
Figure 5-6 Component Locations in a MGX 8880 System
Note If you plan to expand your system to include more switches in the future, allow space in the rack for
additions, keeping in mind the weight distribution and stability of the rack
Prepare for Rack Installation
The minimum distance between left and right mounting rails (as you face the rack) must be 17.75 inches
or 45.08 cm. (Some 19-inch racks have only 17.50 inches between the rails.) The width of the
components, such as the card cage and fan tray, is 17.72 inches.
When installing a MGX 8850, MGX 8850/B, or MGX 8880 system in a 19-inch rack, adhere to the
following guidelines:
• Open-rack configuration—The switch and hardware components (optional AC power supply tray,
air intake plenum, upper and lower fan trays, and exhaust plenum) need to be mid-mounted in the
rack. Brackets for that purpose are included with the system.
• Cisco cabinet configuration—The switch and hardware components (optional AC power supply tray,
air intake plenum, upper and lower fan trays, and exhaust plenum) are shipped front-mounted in the
enclosure, and the rear of each component is supported by a rear bracket.
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8880
Exhaust plenum/
fan tray
3.5 in.
Switch
17.5 in.
Air intake plenum
3.5 in.
AC power tray
(optional)
5.25 in.
2 RU
10 RU
2 RU
3 RU
