MIC LEDs
Each hot-removable and hot-insertable MIC has LEDs located on the faceplate. For more
information about LEDs on the MIC faceplate, see the “LEDs” section for each MIC in the
MX Series Interface Module Reference.
For information about the built-in MIC LEDs, see “MIC LEDs” on page 49.
Power Supply LED
One LED labeled PS STATUS indicates the status of the power supply. For more
information, see “Power Supply LEDs” on page 61.
Routing Engine LEDs
Three LEDs indicate the status of the Routing Engine. For more information, see “MX104
Routing Engine LEDs” on page 23.
Related
Documentation
Troubleshooting Resources for MX104 Routers on page 197•
• MX104 Chassis Overview on page 4
MX104 Clocking and Timing Ports Overview
Four Subminiature B (SMB) connectors (for 10-MHz and 1-PPS), one RJ-48 port (for
BITS), and one RS-232 port (for TOD) on the front panel of the router connect to external
clock signal sources. The clocking ports provide the synchronized output clocks from any
one of the reference clock inputs based on the clock’s priority.
The reference clock inputs can be Ethernet-recovered clocks, T1 or E1 line clocks, IEEE
1588v2-recovered clocks, BITS timing, 10-MHz timing, and 1-PPS timing. The T1 or E1 line
clock also supports loop timing. These clocking ports distribute a synchronized clock
signal throughout the chassis by locking onto the selected clock source. In the absence
of these configured ports, the local oscillator present in the system provides the chassis
synchronization.
Clock sources within the MX104 router include:
•
External clock timing port
•
10-MHz timing connectors (one input and one output)
•
1-pulse-per-second (PPS) connectors (one input and one output)
•
Time-of-day (TOD) RS-232 port
•
Synchronous Ethernet support on SFP ports as timing input or output
•
Packet (IEEE 1588-2008) v2 timing includes:
•
Timing input when configured as Ordinary Clock (OC) or Boundary Clock (BC)
•
Timing output when configured as BC
17Copyright © 2017, Juniper Networks, Inc.
Chapter 2: Chassis Components and Descriptions
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