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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
Chapter3 Preparing for Installation
Site Requirements for the MGX 8850 or MGX 8850/B Switch
Space
You can install the following MGX 8850 or MGX 8850/B system components in a rack (as shown in
Figure 3-3):
•Exhaust plenum
•Upper fan tray
•Cisco MGX 8850 switch
•Lower fan tray
•Air intake plenum
•AC power supply tray (optional)
Non-Operational •None. •1.12 Grms, 3 to 500 Hz
•Spectral break points of
0.0065 G1/Hz at 10 Hz and 100 Hz
•5 dB/octave roll-off at each end
•30 minutes in each of 3 axes
Earthquake •No damage to the switch when tested
to earthquake waveform.
•75-mm maximum single amplitude
deflection.
•Frame-level natural mechanical
resonant frequency > 2 Hz.
•Frame-level natural mechanical
resonant frequency > 6 Hz.
•Product must function before and
after vibration is applied to each axis
(x = side to side, y = front to back, z
= up and down).
•Product must operate without loss of
service during earthquake testing.
•None
1. Office product—More than 2 m from regularly inhabited positions
2. Cisco package test specification
Table3-2 Vibration Condition Recommendations (continued)
Category NEBS Description MDVT Description