Juniper JUNOS - NETWORK OPERATION GUIDE REV1 User Manual

Using the Basic Monitoring Method ! 61
Chapter 11: Understanding the Method and Tools for Monitoring Router Components
Display the Current Router Alarms
Action To display the current router component alarms, use the following CLI command:
user@host> show chassis alarms
The command output displays the number of alarms currently active, the time
when the alarm began, the severity level, and an alarm description. Note the date
and time of an alarm so that you can correlate it with error messages in the
messages system log file.
Various conditions related to the chassis components trigger yellow and red alarms.
You cannot configure these conditions. Table 20 through Table 27 list the alarms
that the chassis components can generate.
Table 20 lists the alarms that the chassis components can generate on an M5 or
M10 router.
Table 20: M5 or M10 Router Chassis Component Alarm Conditions
Chassis
Component
Alarm Condition Remedy
Alarm
Severity
Alternative media The router boots from
alternate boot device: the
hard disk. Typically, the
router boots from the flash
drive
. If you configure your
router to boot from the hard
disk, ignore this alarm
condition.
For technical support, open
a support case using the
Case Manager link at
http://www.juniper.net
/support/
or call
1-888-314-JTAC (within the
United States) or
1-408-745-9500 (outside
the United States).
Yellow
Craft interface The craft interface failed. Replace the failed craft
interface.
Red
Fan trays One fan tray was removed
from the chassis.
Install the missing fan tray. Yellow
Two or more fan trays were
removed from the chassis.
Install the missing fan trays. Red
One fan in the chassis is not
spinning or is spinning below
required speed.
Replace the failed fan tray. Red
FEB The Control Board failed.
If this occurs, the board
attempts to reboot.
Replace the failed FEB. Red
FPC An FPC failed. If this occurs,
the FPC attempts to reboot. If
the SCB sees that an FPC is
rebooting too often, it shuts
down the FPC.
Replace the failed FPC. Red
Hot swapping Too many hot-swap
interrupts are occurring. This
message generally indicates
that a hardware component
that plugs into the router’s
backplane from the front
(generally, an FPC) is broken.
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Juniper JUNOS - NETWORK OPERATION GUIDE REV1 Specifications

General

Brand	Juniper
Model	JUNOS - NETWORK OPERATION GUIDE REV1
Category	Software
Language	English