SRX5800 Services Gateway Routing Engine Components

The Routing Engine consists of the following components:

CPU—Runs Junos OS to maintain the services gateway's routing tables and routing protocols. It has a Pentium-class processor.
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 supports USB version 1.0.
Internal flash disk—Provides primary storage for software images, configuration files, and microcode. The disk is a fixed compact flash and is inaccessible from outside the services gateway.
Hard disk—Provides secondary storage for log files, memory dumps, and rebooting the system if the internal compact flash disk fails.
HDD LED—Indicates disk activity for the hard disk drive.
Management ports—Each Routing Engine has one 10/100-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. The interface ports are labeled AUX, CONSOLE, and ETHERNET.
EEPROM—Stores the serial number of the Routing Engine.
Reset button—Reboots the Routing Engine when pressed.
Online/Offline button—Not supported in the current release.
Extractor clips—Used for inserting and extracting the Routing Engine.
Captive screws—Secure the Routing Engine in place.