Juniper T640 Hardware Manual page 69

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Copyright © 2013, Juniper Networks, Inc.
Each RE-1600 (shown in Figure 19 on page
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
(
http://www.juniper.net/support/
Center, then to the download page for Junos OS.
NOTE: 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.
LED and
HD Slot LEDs 0 and 1
T640 Hardware Component Overview on page 11
T640 Host Subsystem Description on page 32
T640 Routing Engine Description on page 33
T640 RE-1600 LEDs on page 38
Maintaining the T640 Routing Engines on page 183
Chapter 3: T640 Router Hardware Component Overview
36) consists of the following components:
). After logging in, navigate to the Customer Support
LEDs.
37