Juniper MX204 - Routing Engine Interface Ports

Routing Engine Interface Ports
The ports located on the router connect the Routing Engine to one or more external devices on which
system administrators can issue Junos OS CLI commands to manage the router. In addition, ports to connect
external clock interfaces for BITS and GPS function are also available on the router.
The Routing Engine interface ports with the indicated labels function are as follows (see
Figure 16 on page 47):
•
CON—Connects the Routing Engine to a system console through a serial cable with an RJ-45 connector.
•
MGMT—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 10-Mbps, 100-Mbps, or 1000-Mbps connections. Two small
LEDs on the port indicate the connection in use: the LED flashes yellow or green for a 10-Mbps,
100-Mbps, or 1000-Mbps connection, and the LED is lit green when traffic is passing through the port.
•
BITS—Building-integrated timing supply (BITS) external clocking interface for connecting to external
clocking devices.
•
ToD—Time-of-day (TOD) port on the front panel of the router that enables you to connect external
timing signal sources.
NOTE: This port is reserved for future use.
•
10MHZ (one input and one output)—The 10-MHz timing connectors on the front panel of the router
that 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.
•
PPS (one input and one output)—1-pulse-per-second (PPS) connectors on the front panel of the router
that 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.
•
USB—Provides a removable media interface through which you can install Junos OS manually. Junos
OS supports USB version 1.0 and later.
SEE ALSO
RJ-45 Connector Pinouts for MX Series CB-RE or RCB Auxillary and Console Ports | 68
RJ-45 Connector Pinouts for an MX Series CB-RE or RCB Management Port | 69
MX204 Chassis Description | 23
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