M320 Routing Engine 2000; Figure 11: Routing Engine 2000 - Juniper M320 Hardware Manual

M320 Router Hardware Guide
Related
Documentation

M320 Routing Engine 2000

22
All manuals and user guides at all-guides.com
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-1600-2048 Routing Engine, the boot sequence for the storage media is as
follows: the PC card in
SLOT 0
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.
M320 Routing Engine Ports on page 26
M320 Routing Engine Description on page 19
Replacing an M320 Routing Engine on page 166

Figure 11: Routing Engine 2000

Each Routing Engine (shown in Figure 11 on page 22 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.
(if present), then the PC card in
Copyright © 2010, Juniper Networks, Inc.
(if present), then
SLOT 1