T640 RE-C1800 Description

RE-C1800 Components

• CPU—Runs the 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.
• EEPROM—Stores the serial number of the Routing Engine.
• Interfaces for management access—Provide information about Routing Engine status to devices (console, laptop, or terminal server) connected to the management ports located on the CIP.

Figure 1: Routing Engine C1800 (RE-C1800)

• USB port—Provides a removable media interface through which you can install the Junos OS manually. The Junos OS supports USB version 1.1 and version 2.0 devices.
• CompactFlash card slot—Provides primary storage for software images, configuration files, and microcode.
• Two solid-state disk (SSD) slots—Provides secondary storage for log files, memory dumps, and rebooting the system if the CompactFlash card fails.

  Note: SSD2 is not currently supported.

• Reset button—Reboots the Routing Engine when pressed.
• Offline button—Takes the Routing Engine offline when pressed.
• Four LEDs—CF, SSD1,SSD2, and ONLINE.
• Extractor clips—Control the locking system that secures the Routing Engine.

RE-C1800 Boot Order

The RE-C1800 Routing Engine boots from the storage media in this order: the USB device, then the CompactFlash card (if present), then SSD1, then the LAN.