Maintaining The Mx2020 Cooling System Zones - Juniper MX2020 Hardware Manual

Maintaining the MX2020 Cooling System Zones

Purpose
Action
Copyright © 2015, Juniper Networks, Inc.
115
ADC 16 ADC-XF0
115
ADC 18 Intake
95
ADC 18 Exhaust
95
ADC 18 ADC-XF1
115
ADC 18 ADC-XF0
115
For the fan trays, the output for the
user@host> show chassis fan
Item
Fan Tray 0 Fan 1
Fan Tray 0 Fan 2
Fan Tray 0 Fan 3
Fan Tray 0 Fan 4
Fan Tray 0 Fan 5
Fan Tray 0 Fan 6
Fan Tray 1 Fan 1
Fan Tray 1 Fan 2
Fan Tray 1 Fan 3
Fan Tray 1 Fan 4
Fan Tray 1 Fan 5
Fan Tray 1 Fan 6
Fan Tray 2 Fan 1
Fan Tray 2 Fan 2
Fan Tray 2 Fan 3
Fan Tray 2 Fan 4
Fan Tray 2 Fan 5
Fan Tray 2 Fan 6
Fan Tray 3 Fan 1
Fan Tray 3 Fan 2
Fan Tray 3 Fan 3
Fan Tray 3 Fan 4
Fan Tray 3 Fan 5
Fan Tray 3 Fan 6
Fan Tray 0 , Fan Tray 1 refer to the lower rear fan trays,
the upper rear fan trays.
, , , ,
Fan 1 Fan 2 Fan 3 Fan 4 Fan 5
fans for each fan tray.
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 ( through
10
the CB-REs and SFBs. Zone 1 is cooled by fan trays
( through ), and their respective MICs, along with the bottom half of CB-REs and SFBs.
0 9
Zone 0 is cooled by fan trays
two fan trays are at the top of the chassis.
On a regular basis:
70 80 90
56 62 75
56 62 75
70 80 90
70 80 90
command is similar to the following:
show chassis fan
Status % RPM Measurement
OK 38%
OK 37%
OK 37%
OK 37%
OK 37%
OK 37%
OK 37%
OK 38%
OK 37%
OK 37%
OK 38%
OK 38%
OK 30%
OK 29%
OK 30%
OK 29%
OK 29%
OK 29%
OK 38%
OK 40%
OK 38%
OK 38%
OK 38%
OK 38%
Fan Tray 2
, and refer to the fans on the fan tray. There are six
Fan 6
) and their respective MICs, along with the top half of
19
2 and
and . Two fan trays are at the bottom of the chassis, and
0 1
Chapter 23: Maintaining Components
90 107 107
63 83 76
63 83 76
90 107 107
90 107 107
3480 RPM
3360 RPM
3360 RPM
3360 RPM
3360 RPM
3360 RPM
3360 RPM
3480 RPM
3360 RPM
3360 RPM
3480 RPM
3480 RPM
2760 RPM
2640 RPM
2760 RPM
2640 RPM
2640 RPM
2640 RPM
3480 RPM
3600 RPM
3480 RPM
3480 RPM
3480 RPM
3480 RPM
, and Fan Tray 3 refer to
3 . Zone 0 consists of ten MPCs
355