Srx5K-Re-1800X4 Routing Engine Boot Sequence; Srx5800 Services Gateway Component Redundancy - Juniper SRX5800 Hardware Manual

SRX5K-RE-1800X4 Routing Engine Boot Sequence

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SRX5800 Services Gateway Component Redundancy

Copyright © 2015, Juniper Networks, Inc.
–Connects the Routing Engine to a laptop, modem, or other auxiliary device through
AUX
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.
–Connects the Routing Engine through an Ethernet connection to a
ETHERNET
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 or 100-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-Mbps or 100-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.
NOTE: The SSD is not a separate field-replaceable unit (FRU).
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.
Switch Control Board SRX5K-SCBE Overview on page 13
The following major hardware components are redundant:
Switch Control Boards (SCBs)—The host subsystem consists of a Routing Engine
installed in an SCB. The device must have one host subsystem installed. You can install
a second SCB for increased throughput, and a third SCB for redundancy. If a second
or third SCB is installed, the host subsystem SCB functions as the master and the
others function as the backup. If the SCB of the host subsystem fails, one of the other
SCBs takes over as the master.
Chapter 2: Hardware Component Overview
17