M120 Component Leds On The Craft Interface; Host Subsystem Leds On The M120 Craft Interface; Ethernet Port Leds On The Craft Interface; Table 4: M120 Host Subsystem Leds - Juniper M120 Hardware Manual

M120 Multiservice Edge Router Hardware Guide
Related
Documentation

M120 Component LEDs on the Craft Interface

Host Subsystem LEDs on the M120 Craft Interface

Ethernet Port LEDs on the Craft Interface

14
M120 Craft Interface Description on page 11
M120 Routing Engine Interface Ports and Status Indicators on page 28
M120 External Clock Interface Ports on the Craft Interface on page 16
Replacing the M120 Craft Interface on page 184
Host Subsystem LEDs on the M120 Craft Interface on page 14
Ethernet Port LEDs on the Craft Interface on page 14
FEB LEDs on the M120 Craft Interface on page 15
FPC LEDs on the M120 Craft Interface on page 15
Power Supply LEDs on the M120 Craft Interface on page 15
External Clocking Inputs LEDs on the M120 Craft Interface on page 15
Each host subsystem has three LEDs, located in the middle of the craft interface, that
indicate its status. The LED labeled
installed in slot CB0 . The LED labeled
CB installed in slot . Table 4 on page 14
CB1
LEDs.

Table 4: M120 Host Subsystem LEDs

Label Color
RE MASTER Green
RE STATUS Green
Red
Green
CB STATUS
Red
Two small LEDs on the bottom of the
LED lights yellow or green for a 10-Mbps or 100-Mbps connection, and the LED lights
green when traffic is passing through the port. Related Documentation M Series RJ-45
Connector Pinouts for the M120 Routing Engine ETHERNET Port RJ-45 Connector Pinouts
for the Routing Engine AUX and CONSOLE Ports RJ-45 Connector Pinouts for the External
Clock Ports
indicates the status of the Routing Engine and CB
0
1 indicates the status of the Routing Engine and
describes the functions of the host subsystem
State Description
On steadily Routing Engine is the master.
On steadily The Routing Engine is functioning.
On steadily The Routing Engine has failed.
On steadily The board is online.
Blinking The board is transitioning online/offline.
On steadily The CB has failed.
port indicate the connection in use: the
ETHERNET
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