Juniper MX2020 Hardware Guide

•
The green LEDs next to the fan trays 0, 1, 2, and 3 on the craft interface light steadily when the fan tray
is functioning normally for that zone.
•
Issue the show chassis zones command to check the status of the two cooling zones. The output is
similar to the following:
user@host> show chassis zones
ZONE 0 Status
Driving FRU FPC 9
Temperature 62 degrees C / 143 degrees F
Condition WARM TEMP
Num Fans Missing 0
Num Fans Failed 0
Fan Duty Cycle 30
ZONE 1 Status
Driving FRU FPC 19
Temperature 64 degrees C / 147 degrees F
Condition WARM TEMP
Num Fans Missing 0
Num Fans Failed 0
Fan Duty Cycle 30
SEE ALSO
MX2020 Cooling System Description | 45
RELATED DOCUMENTATION
MX2020 Cooling System Description | 45
Maintaining the MX2020 Cooling System Zones
Purpose
For optimum router performance, verify the status of the two cooling zones of the chassis. Both Zone 0
and Zone 1 cool the Control Board and Routing Engine (CB-RE). Zone 1 consist of ten MPCs (10 through
19) and their respective MICs, along with the top half of the CB-REs and SFBs. Zone 1 is cooled by fan
trays 2 and 3. Zone 0 consists of ten MPCs (0 through 9), and their respective MICs, along with the bottom
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Juniper MX2020 Specifications

General

Brand	Juniper
Model	MX2020
Category	Network Router
Language	English