Figure 155: M7i Router Cooling System and Airflow
Related
Documentation
Checklist for Monitoring the Cooling System on page 317•
M10i Router Cooling System
The M10i router cooling system consists of two fan trays, located along the left and right
side of the chassis that provide side-to-side cooling. The fan trays house eight fans that
draw room air into the chassis to maintain an acceptable operating temperature for the
Routing Engine, PICs, Compact Forwarding Engine Board (CFEB), and other components.
The fan trays connect directly to the router midplane. If a single fan fails, the remaining
fans continue to function indefinitely (see Figure 156 on page 321).
Figure 156: M10i Router Cooling System and Airflow
g002237
Front of chassis
M10i
Redundant fan trayFan tray
Fan tray
6" (15.2 cm)
for airflow
(recommended)
6" (15.2 cm)
for airflow
(recommended)
FANTRAY O
FANTRAY 1
NOTE:
C-FEB 0
C-FEB 1
P/S 3
P/S 2
P/S 1
P/S 0
P/S 0 AND P/S 1 MUST BE PRESENT
FOR NORMAL OPERATION.
Redundant fan tray
For proper airflow, the primary fan tray should be installed in slot 1 (the left slot looking
at the chassis from the rear) and must be installed for proper cooling at all times. The
redundant fan tray, if present, should be installed in slot 0 on the right. This fan tray
provides additional cooling and redundancy.
Related
Documentation
Checklist for Monitoring the Cooling System on page 317•
M20 Router Cooling System
The M20 router cooling system consists of the following components (see Figure 157 on
page 322):
321Copyright © 2012, Juniper Networks, Inc.
Chapter 11: Monitoring the Cooling System
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