•
Host subsystem LEDs—Three LEDs, RE MASTER, RE STATUS, and CB STATUS, indicate
the status of the host subsystem. On the RE MASTER, a green LED indicates MASTER.
On the RE STATUS and CB STATUS LEDs, green indicates OK and red indicates FAIL.
The host subsystem LEDs are located in the middle of the craft interface, and are
labeled 0 and 1.
See “Host Subsystem LEDs on the M120 Craft Interface” on page 14.
•
FEB LEDs—Two LEDs (one ACTIVE and one STATUS) indicate the status of each FEB.
Green indicates OK and red indicates FAIL. The FEB LEDs are located on the lower right
of the craft interface, and are labeled 0 through 5.
See “FEB LEDs on the M120 Craft Interface” on page 15.
•
Power supply LED—One LED (STATUS) indicates the status of each power supply.
Green indicates the power supply is functioning properly. Red indicates the power
supply is not functioning properly. The power supply LEDs are located on the lower
left of the craft interface, and are labeled 0 and 1.
See “Power Supply LEDs on the M120 Craft Interface” on page 15.
•
FPC LEDs—One LED, STATUS, indicates the status of each FPC. Green indicates OK
and red indicates a failure. The FPC LEDs are located along the bottom of the craft
interface, and are labeled FPC0 through FPC5.
See “FPC LEDs on the M120 Craft Interface” on page 15.
•
Alarm LEDs—One large red circular LED and one large yellow triangular LED, located
on the upper upper left of the craft interface, indicate two levels of alarm conditions.
See “M120 Alarm LEDs and Alarm Cutoff/Lamp Test Button” on page 13.
Component LEDs
The following LEDs are located on various router components and display the status of
those components:
•
FEB LEDs—Six LEDs, labeled 0 through 5, on each FEB faceplate indicate which FPC
the FEB is connected to. Three additional LEDs on the FEB faceplate display the status
of the FEB, OK, FAIL, and ACTIVE.
See “M120 Forwarding Engine Boards (FEBs) LEDs” on page 77.
•
CB LEDs—Three LEDs, labeled OK, FAIL, and MSTR, on each CB faceplate indicate the
status of the CB. If no LEDs are lit, the master RE may still be booting or the CB is not
receiving power.
See “M120 Control Board (CB) LEDs” on page 48.
•
PIC LEDs—Each port on each PIC has an LED that indicates the status of the port.
See the M120 Multiservice Edge Router Interface Module Reference.
•
Power supply LEDs—One LED on each power supply faceplate indicates the status of
that power supply.
See “M120 Power Supply LEDs” on page 73.
285Copyright © 2018, Juniper Networks, Inc.
Chapter 32: Troubleshooting Components
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