Mx104 Clocking And Timing Ports Overview; Figure 6: Sample Input Alarm-Reporting Device - Juniper MX104 Hardware Manual

MX104 3D Universal Edge Router Hardware Guide
Related
Documentation

MX104 Clocking and Timing Ports Overview

Related
Documentation
14

Figure 6: Sample Input Alarm-Reporting Device

MX104 3D Universal Edge Router Overview on page 3
MX104 Chassis Overview on page 11
MX104 Alarm Contact Port Specifications on page 173
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 RJ-45/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
Connecting the MX104 Router to External Clocking and Timing Devices on page 61
Copyright © 2014, Juniper Networks, Inc.