Juniper T640 Hardware Guide

Table 14: Routing Engine C1800 LEDs (continued)
DescriptionStateColorLabel
Routing Engine is functioning normally.On steadilyGreenONLINE
Routing Engine is not functioning normally.On steadilyRed
Routing Engine is not online or not functioning
normally.
Off—
Indicates activity on the USB port.On steadilyGreenUSB
There is no activity on the USB port.Off—
Related
Documentation
T640 Routing Engine Description on page 36•
• T640 RE-C1800 Description on page 42
• Troubleshooting the T640 Host Subsystem on page 472
T640 RE-2000 Description
Each RE-2000 (shown in Figure 22 on page 45) 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 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 access—Provide information about Routing Engine status
to devices (console, laptop, or terminal server) connected to the Routing Engine ports
located on the CIP.
Copyright © 2017, Juniper Networks, Inc.44
T640 Core Router Hardware Guide

Juniper T640 Specifications

General

Brand	Juniper
Model	T640
Category	Network Router
Language	English