Routing Engine Srx5K-Re-1800X4 Specifications - Juniper SRX5400 Hardware Manual

• 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 firewall 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 firewall boots from the
copy of the software on the CompactFlash card.

Routing Engine SRX5K-RE-1800X4 Specifications

IN THIS SECTION
SRX5K-RE-1800X4 LEDs | 61
Each Routing Engine consists of the following components:
• CPU—Runs Junos OS to maintain the routing tables and routing protocols.
• DRAM—Provides storage for the routing and forwarding tables and for other Routing Engine
processes.
• USB port—Provides a removable media interface through which you can install the Junos OS
manually. Junos OS supports USB version 1.0 and 2.0.
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