Component Leds - Juniper MX960 Hardware Manual

Alarm LEDs—One large red circular LED and one large yellow triangular LED, located on the upper right
of the craft interface, indicate two levels of alarm conditions. The circular red LED lights to indicate a
critical condition that can result in a system shutdown. The triangular yellow LED lights to indicate a less
severe condition that requires monitoring or maintenance. Both LEDs can be lit simultaneously. A
condition that causes an alarm LED to light also activates the corresponding alarm relay contact on the
craft interface.
Host subsystem LEDs—Three LEDs, MASTER, ONLINE, and OFFLINE, indicate the status of the host
subsystem. A green MASTER LED indicates that the host is functioning as the master. The ONLINE LED
indicates that the host is online. The OFFLINE LED indicates that the host is installed but the routing
engine is offline. The host subsystem LEDs are located on the left of the craft interface and are labeled
RE0 and RE1.
Power supply LEDs—Two LEDs (PEM) indicate the status of each power supply. Green indicates that
the power supply is functioning normally. Red indicates that the power supply is not functioning normally.
The power supply LEDs are located in the center craft interface, and are labeled 0 through 3.
Line card LEDs—Two LEDs, OK and FAIL, indicate the status of each DPC, FPC, or MPC. Green indicates
OK and red indicates a failure. The line card LEDs are located along the bottom of the craft interface.
SCB LEDs—Two LEDs, OK and FAIL, indicate the status of each SCB. Green indicates OK and red
indicates a failure. The SCB LEDs are located on the left of the craft interface along the bottom.
Fan LEDs—Two LEDs indicate the status of the fans. Green indicates the fans are functioning normally
and red indicates a fan has failed. The fan LEDs are located on the upper left of the craft interface.

Component LEDs

The following LEDs are located on various router components and display the status of those components:
DPC LED—One LED labeled OK/FAIL on each DPC faceplate indicates the DPC's status. For more
information, see the MX Series Interface Module
FPC LED—One LED labeled OK/FAIL on each FPC faceplate indicates the FPC's status.
MPC LED—One LED labeled OK/FAIL on each FPC faceplate indicates the FPC's status.
MIC LED—One LED labeled OK/FAIL on each MIC faceplate indicates the MIC's status. For more
information, see the MX Series Interface Module
PIC LED—One LED labeled OK/FAIL on each PIC faceplate indicates the PIC's status. For more
information, see the MX Series Interface Module
SCB LEDs—Three LEDs, labeled FABRIC ACTIVE, FABRIC ONLY, and OK/FAIL, on each SCB faceplate
indicate the status of the SCB. If no LEDs are lit, the master RE might still be booting or the SCB is not
receiving power.
Reference.
Reference.
Reference.
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