Troubleshooting Using The Chassis And Interface Alarm Messages; Troubleshooting Using The Juniper Networks Technical Assistance; Center; M120 Led Overview - Juniper M120 Hardware Manual

M120 Multiservice Edge Router Hardware Guide

Troubleshooting Using the Chassis and Interface Alarm Messages

Troubleshooting Using the Juniper Networks Technical Assistance Center
Related
Documentation

M120 LED Overview

Craft Interface LEDs

284
For information about using the CLI to troubleshoot the Junos OS, see the appropriate
Junos OS configuration guide.
When the Routing Engine detects an alarm condition, it lights the red or yellow alarm
LED on the craft interface as appropriate. To view a more detailed description of the
alarm cause, issue the
show chassis alarms
user@host> show chassis alarms
There are two classes of alarm messages:
Chassis alarms—Indicate a problem with a chassis component such as the cooling
system or power supplies.
Interface alarms—Indicate a problem with a specific network interface.
If you need assistance during troubleshooting, you can contact the Juniper Networks
Technical Assistance Center (JTAC) by using the Web or by telephone. See
Customer Support" on page
M120 Router Description on page 3
M120 Router Physical Specifications on page 82
M120 Router Power Requirements on page 88
Craft Interface LEDs on page 284
Component LEDs on page 285
The craft interface is the panel on the front of the router that displays system status and
allows you to troubleshoot the router. The craft interface is located at the top of the
chassis above the FPC card cage.
For more information about using the craft interface, see
on page 11.
LEDs on the craft interface include the following:
CLI command:
295.
"Contacting
"M120 Craft Interface Description"
Copyright © 2018, Juniper Networks, Inc.