Juniper SRX 5800, Hardware Manual

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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.
Routing Engine SRX5K-RE-1800X4 Specifications
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.
•
CompactFlash card—Provides primary storage for software images, configuration files, and microcode.
The CompactFlash card is fixed and is inaccessible from outside the device.
•
Solid-state drive (SSD)—Provides secondary storage for log files, for generating core files, and for rebooting
the system if the CompactFlash card fails.
•
Interface ports—The AUX, CONSOLE, and ETHERNET ports provide access to management devices.
Each Routing Engine has one 10/100/1000-Mbps Ethernet port for connecting to a management
network, and two asynchronous serial ports—one for connecting to a console and one for connecting
to a modem or other auxiliary device.
•
EEPROM—Stores the serial number of the Routing Engine.
•
Reset button—Reboots the Routing Engine when pressed.
•
Online/Offline button—Takes the Routing Engine online or offline when pressed.
•
Extractor clips—Inserts and extracts the Routing Engine.
•
Captive screws—Secures the Routing Engine in place.
Routing Engine for SRX5400, SRX5600, and SRX5800 Services Gateways Description
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