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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)
Routing Engine 1600 (RE-1600)

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

  • CPU—Runs Junos OS 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.

    The slots accept a Type I PC Card, as defined in the PC Card Standard published by the Personal Computer Memory Card International Association (PCMCIA). The router is shipped with a PC Card that contains Junos OS. The PC Card can be used to copy Junos OS from the PC Card onto the Routing Engine. You can also copy Junos OS from the Routing Engine onto a PC Card, for example, to create a backup copy of upgrade software that you have obtained from Juniper Networks. Instructions for copying software to a PC Card are available at the Juniper Networks Support Web site ( After logging in, navigate to the Customer Support Center, then to the download page for Junos OS.


    The software on a PC Card is loaded only onto the Routing Engine into which the PC Card is inserted. It is not automatically copied to the other Routing Engine.

  • Reset button—Reboots the Routing Engine when pressed.

  • HD LED and Slot LEDs 0 and 1 LEDs.