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T640 RE-1600 Description

The RE-1600 Routing Engine boots from the storage media in this order: the PC Card in SLOT 0 (if present), then the PC Card in SLOT 1 (if present), then the CompactFlash card (if present), then the hard disk.

Figure 1: Routing Engine 1600 (RE-1600)

Image g003457.gif

Each RE-1600 (shown in Figure 1) consists of the following components:

  • CPU—Runs JUNOS Software to maintain the router's routing tables and routing protocols. It has a Pentium-class processor.
  • SDRAM—Provides storage for the routing and forwarding tables and for other Routing Engine processes.
  • CompactFlash card—Provides primary storage for software images, configuration files, and microcode. The fixed CompactFlash card is inaccessible from outside the router.
  • Hard disk—Provides secondary storage for log files, memory dumps, and rebooting the system if the CompactFlash card fails.
  • EEPROM—Stores the serial number of the Routing Engine.
  • Interfaces for management—Provide information about Routing Engine status to devices (console, laptop, or terminal server) connected to the Routing Engine ports located on the CIP.

The faceplate of the RE-1600 contains the following:

  • Two PC Card slots—Accept removable PC Cards, which store software images for system upgrades.
  • Reset button—Reboots the Routing Engine when pressed.
  • LEDs—Table 1 describes the functions of these LEDs.

    Table 1: Routing Engine 1600 LEDs

    Label

    Color

    State

    Description

    Slot LEDs 0 and 1

    Red and green alternately

    Blinking

    Indicates that the Routing Engine is booting and the firmware is checking if a PC card is installed.

     

    Green

    On steadily

    Indicates that the Routing Engine booted from the PC Card.

    HD

    Yellow

    On steadily or blinking

    Indicates activity on the hard drive.

    Note: The LEDs on the Routing Engine do not necessarily indicate routing-related activity.

    Note: The LEDs that report host module status (including Routing Engine status) are on the craft interface rather than the Routing Engine faceplate.

Published: 2009-09-26