Juniper M120 - M120 Compact FPCs (CFPCs) Description

Table 10: Routing Engine LEDs
DescriptionStateColorLabel
Routing Engine is the Master.On steadilyBlueMASTER
Indicates activity on the SSD or Compact Flash.BlinkingGreenSTORAGE
Routing Engine is transitioning online.BlinkingGreenONLINE
Routing Engine is functioning normally.On steadily
Routing Engine has failed.On steadilyRedOK/FAIL
Related
Documentation
M320 LED Overview•
• M320 RE-A-1800 Routing Engine Description
• Maintaining the M320 Host Subsystem
M120 Routing Engine Interface Ports and Status Indicators
To the right of the alarm relay contact on the craft interface are two sets of ports that
connect the Routing Engines to one or more external devices on which system
administrators can issue Junos OS command-line interface (CLI) commands to manage
the router (see Figure 6 on page 11). The set of ports in the left connects to the Routing
Engine in the left Routing Engine slot (REO) and the set on the right connects to the
Routing Engine (RE1) in the right Routing Engine slot.
The ports with the indicated label in each set function as follows:
•
AUX—Connects the Routing Engine to a laptop, modem, or other auxiliary device
through a cable with an RJ-45 connector.
•
CONSOLE—Connects the Routing Engine to a system console through a cable with an
RJ-45 connector.
•
ETHERNET—Connects the Routing Engine through an Ethernet connection to a
management LAN (or any other device that plugs into an Ethernet connection) for
out-of-band management. The port uses an autosensing RJ-45 connector to support
both 10- and 100-Mbps connections. Two small LEDs on the bottom of the port indicate
the connection in use: 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
RJ-45 Connector Pinouts for the M120 Routing Engine ETHERNET Port on page 106•
• RJ-45 Connector Pinouts for the Routing Engine AUX and CONSOLE Ports on page 106
• RJ-45 Connector Pinouts for the External Clock Ports on page 107
Copyright © 2018, Juniper Networks, Inc.28
M120 Multiservice Edge Router Hardware Guide