M320 Routing Engine 600 Description - Juniper M320 Hardware Manual

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M320 Routing Engine 600 Description

Copyright © 2015, Juniper Networks, Inc.
M320 Connector Interface Panel (CIP) Description on page 13
Replacing an M320 Routing Engine on page 216
M320 Routing Engine 600 Description on page 25
M320 Routing Engine 1600 Description on page 26
M320 Routing Engine 2000 Description on page 27
M320 RE-A-1800 Routing Engine Description on page 28
Each M320 Routing Engine 600 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.
DRAM—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 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.
One PC card slot—Accepts a removable PC card, which stores software images for
system upgrades.
LED—Indicates disk activity for the internal IDE interface. It does not necessarily indicate
routing-related activity.
Interfaces for out-of-band management access—Provide information about
Routing Engine status to devices (console, laptop, or terminal server) that can be
attached to access ports located on the Connector Interface Panel (CIP).
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.
EEPROM—Stores the serial number of the Routing Engine.
Reset button—Reboots the Routing Engine when pressed.
On the RE-600-2048 Routing Engine, the boot sequence for the storage media is as
follows: the PC card (if present), then the CompactFlash card (if present), then the hard
disk.
The device from which the router boots is called the primary boot device, and the other
device is the alternate boot device.
NOTE: If the router boots from an alternate boot device, a yellow alarm lights
the LED on the router's craft interface.
Chapter 5: Host Subsystem Components and Descriptions
25