Juniper MX480, Руководство по оборудованию

Страница: 65 / 420

Figure 24: RE-S-1800 Front View
g006040
USB
port Reset
button
Extractor
clip
Extractor
clip
Console
port
Auxiliary
port Ethernet
port SSD
slot 2 SSD
slot 1
• RE-S-1800 Routing Engine Components on page 65
•
RE-S-1800 Routing Engine LEDs on page 66
•
RE-S-1800 Routing Engine Boot Sequence on page 66
RE-S-1800 Routing Engine Components
Each Routing Engine consists of the following components:
• CPU—Runs Junos OS to maintain the router's routing tables and routing protocols..
• DRAM—Provides storage for the routing and forwarding tables and for other Routing
Engine processes.
•
USB port—Provides a removable media interface through which you can install Junos
OS manually. Junos OS supports USB version 1.0.
• CompactFlash card—Provides primary storage for software images, configuration files,
and microcode. The CompactFlash card is fixed and is inaccessible from outside the
router.
• Solid-state Drive (SSD)—Provides secondary storage for log files, memory dumps,
and rebooting the system if the CompactFlash card fails.
•
Interface ports—The
AUX
,
CONSOLE
, and
ETHERNET
provide access to management
devices. Each Routing Engine has one 10/100/1000-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.
• ONLINE/OFFLINE
button—Takes the Routing Engine online or offline when pressed.
•
Extractor clips—Used for inserting and extracting the Routing Engine.
•
Captive screws—Secure the Routing Engine in place.
NOTE: For specific information about Routing Engine components (for
example, the amount of DRAM), issue the
show chassis routing-engine
command.
65 Copyright © 2019, Juniper Networks, Inc.
Chapter 1: Overview