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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

Software release

Junos OS Release 12.1X47-D15 and later

Cables and connectors

Slot for Routing Engine

  • AUX–Connects the Routing Engine to a laptop, a modem, or another auxiliary device through a cable with an RJ-45 connector.
  • CONSOLE–Connects the Routing Engine to a system console through a 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.

RESET button–Reboots the Routing Engine when pressed.

Supported slots

Front panel slot in an SCB installed in:

  • SRX5400: Bottom slot 0
  • SRX5600: Bottom slots 0 or 1
  • SRX5800: Center slots 0 or 1

Note: The services gateway host subsystem Routing Engine must be installed in the SCB in slot 0. A Routing Engine installed in an SCB in slot 1 only enables dual control links in chassis cluster configurations.

Power requirement

90 W


2.4 lb (1.1 kg)

Serial number location

The serial number label is located as shown in Figure 37.

Figure 37: SRX5K-RE-1800X4 Serial Number Label

SRX5K-RE-1800X4 Serial Number Label

SRX5K-RE-1800X4 LEDs

Each Routing Engine has four LEDs that indicate its status. The LEDs, labeled MASTER, STORAGE, ONLINE, and OK/FAIL, are located directly on the faceplate of the Routing Engine. Table 4 describes the Routing Engine LEDs and their states.

Table 4: SRX5K-RE-1800X4 LEDs




On steadily

Routing Engine is the master.




Indicates activity on the SSD or CompactFlash card.




Routing Engine is transitioning online.


On steadily

Routing Engine is functioning normally.



On steadily

Routing Engine has failed.

Related Documentation

Modified: 2017-04-20