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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 8950 Switch
Install the Upper Fan Tray
Complete the following steps to install the upper fan tray.
Tip If a component requires more than two screws for installation in the rack or cabinet, install the two
bottom screws first.
Step 1 If you are installing the system in a 19-inch or 23-inch rack, place the upper fan tray on a flat and stable
surface (for example, a table top). Use mounting screws and a Phillips-head screwdriver to attach the
mid-mounting brackets to the upper fan tray. You need a mounting kit to accommodate a 23-inch rack
(Cisco Part Number MGX-MNT23-8950).
Note If you are installing the fan tray in a 19-inch cabinet, it is front-mounted in the rack with support
from rear brackets.
Step 2 Position the upper fan tray, which occupies 1 RU of space, directly above the MGX 8950 switch.
Ensure that the air flow direction arrow on the back of the upper fan tray is pointing up.
Step 3 Use four mounting screws and a Phillips-head screwdriver to bolt the upper fan tray in the rack. See
Figure 5-5 for the correct placement of the upper fan tray. Verify that the base at the back aligns with the
top-rear edge of the card cage.
Step 4 If you are installing the fan tray in a 19-inch cabinet, attach the rear-mounting brackets to the rack, and
use screws to secure the fan tray to the rear-mounting brackets.
Install the Exhaust Plenum
Complete the following steps to install the exhaust plenum.
Tip If a component requires more than two screws for installation in the rack or cabinet, install the two
bottom screws first.
Step 1 If you are installing the system in a 19-inch or 23-inch rack, place the exhaust plenum on a flat and stable
surface (for example, a table top). Use mounting screws and a Phillips-head screwdriver to attach the
mid-mounting brackets to the exhaust plenum. You need a mounting kit to accommodate a 23-inch rack
(Cisco Part Number MGX-MNT23-8950).
Note If you are installing the exhaust plenum in a 19-inch cabinet, it is front-mounted in the rack with
support from rear brackets.
Step 2 Position the exhaust, which occupies 3 RUs of space, directly above the upper fan tray.
Step 3 Use four mounting screws and a Phillips-head screwdriver to bolt the exhaust plenum in the rack. See
Figure 5-35 for the correct placement of the exhaust plenum.