Juniper M Series Monitoring And Troubleshooting Manual page 119

Copyright © 2012, Juniper Networks, Inc.
Table 27: M20 Router Chassis Component Alarm Conditions (continued)
Chassis
Component Alarm Condition
Routing Engine Error in reading or writing hard
disk.
Error in reading or writing
CompactFlash card.
System booted from the default
backup Routing Engine. If you
manually switched mastership,
ignore this alarm condition.
System booted from the hard
disk.
Compact flash is missing in the
boot list.
Hard disk is missing in the boot
list.
Routing Engine failed to boot.
Power supplies A power supply was removed
from the chassis.
A power supply failed.
SSB The Control Board failed.
If this occurs, the board
attempts to reboot.
Chapter 3: Method and Tools for Monitoring Router Components
Remedy
Reformat the hard disk and
install a bootable image. If
this fails, replace the failed
Routing Engine.
Reformat the
CompactFlash card and
install a bootable image. If
this fails, replace the failed
Routing Engine.
Install a bootable image on
the default master Routing
Engine. If this fails, replace
the failed Routing Engine.
Install a bootable image on
the CompactFlash card. If
this fails, replace the failed
Routing Engine.
Replace the failed Routing
Engine.
Replace the failed Routing
Engine.
Replace the failed Routing
Engine.
Insert power supply into
empty slot.
Replace the failed power
supply.
Replace the failed Control
Board.
Alarm
Severity
Yellow
Yellow
Yellow
Yellow
Red
Red
Red
Yellow
Red
Red
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