•
AUX
–Connects the Routing Engine to a laptop, modem, or other auxiliary device through
a serial cable with an RJ-45 connector.
•
CONSOLE
–Connects the Routing Engine to a system console through a serial 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
10/100/1000 Mbps connections. Two small LEDs on the bottom of the port indicate
the connection in use: the LED flashes yellow or green for a 10/100/1000 Mbps
connection, and the LED is light green when traffic is passing through the port.
The solid-state drive (SSD) slots located on the Routing Engine provide secondary storage
for log files, for generating core files, and for rebooting the system if the CompactFlash
card fails. Currently, SRX5K-RE-1800X4 only supports one 128-GB SSD.
SRX5K-RE-1800X4 Routing Engine Boot Sequence
The services gateway is shipped with three copies of the Junos OS preinstalled on the
Routing Engine in the following locations:
•
On the CompactFlash card in the Routing Engine
•
On the SSD in the Routing Engine
•
On a USB flash drive that can be inserted into the slot on the Routing Engine faceplate
The Routing Engine boots from the storage media in this order: the USB device (if present),
the CompactFlash card, the solid-state drive (SSD), and then the LAN. Normally, the
services gateway boots from the copy of the software on the CompactFlash card.
Related
Documentation
Switch Control Board SRX5K-SCBE Overview on page 10
•
•
Replacing a CompactFlash Card in an SRX5K-RE-1800X4 Routing Engine
•
Replacing a Solid-State Drive in an SRX5K-RE-1800X4 Routing Engine
SRX5400 Services Gateway Component Redundancy
The following major hardware components are redundant:
•
Power supplies—In the low-line (110 V) AC power configuration, the device contains
two or three AC power supplies (PSUs), located horizontally at the rear of the chassis
in slots
PEM0
through
PEM3
(left to right). Each AC PSU provides power to all
components in the device. When two PSUs are present, they share power almost
equally within a fully populated system. Three AC PSUs provide full power redundancy.
If one power supply fails or is removed, the remaining power supplies instantly assume
the entire electrical load without interruption. Two PSUs provide the maximum
configuration with full power for as long as the device is operational.
13
Copyright © 2017, Juniper Networks, Inc.
Chapter 2: Hardware Component Overview
Summary of Contents for SRX5400
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