Juniper PTX5000 Hardware Manual page 548

PTX5000 Packet Transport Router Hardware Guide
Solution
user@host> show chassis temperature-thresholds
show chassis temperature-thresholds
Item
Routing Engine 0
CB 0 Exhaust A
CB 0 Exhaust B
CB 1 Exhaust A
CB 1 Exhaust B
512
The following alarms or other conditions indicate a problem with the temperature of the
hardware components:
Table 86 on page 519 lists the alarms.
The packet transport router is powered off immediately if the temperature of a packet
transport router component exceeds the preconfigured maximum
threshold.
To troubleshoot temperature alarms:
Find the source of the problem by looking at the display on the craft interface. The
1.
number of alarm conditions, as well as the source of each alarm, appears on the
screen. Issue the show chassis alarms
of an alarm condition:
user@host> show chassis alarms
Verify that there is sufficient air flow. See
2.
Airflow and Hardware Maintenance" on page
Trays" on page 483, and
Place your hand near the exhaust vents at the rear of the chassis to determine whether
the fans are pushing air out of the chassis.
Zone 0: The air exhausts from the left side of the SIBs.
Zone 1: The exhaust vent is located at the upper rear of the chassis.
Power system: The air exhausts from the power supply modules (PSMs).
Verify that the cooling system in the chassis is operating properly. See
3.
the PTX5000 Fan Trays" on page
Verify that the room temperature is within acceptable limits. Use the
4.
temperature-thresholds
NOTE:
Exhaust A
correspond to temperature sensors located on the respective hardware
component.
Fan speed Yellow alarm
(degrees C) (degrees C)
Normal High Normal
80 90 95
60 65 78
60 65 78
60 65 78
60 65 78
command to get information about the source
"PTX5000 Clearance Requirements for
115,
"Maintaining the PTX5000 Air Filters" on page
509.
to show the temperature thresholds for various components.
, , , ,
Exhaust B TLn TQn
Red alarm
(degrees C)
Bad fan Normal Bad fan
85 105 95
75 85 80
75 85 80
75 85 80
75 85 80
Fire Shutdown
"Maintaining the PTX5000 Fan
482.
"Troubleshooting
show chassis
, , and
Ambient Exhaust Junction
Fire Shutdown
(degrees C)
Normal
115
95
95
95
95
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