Leds; Leds On The Hcm; Leds On Hardware Components; Hardware And Interface Alarm Messages - Juniper M10i Hardware Manual

M10i Internet Router Hardware Guide
For information about using the CLI to display details about alarms generated by
interfaces and hardware components, see
Messages"
For information about using the CLI to troubleshoot the JUNOS Internet software,
see the appropriate JUNOS Internet software configuration guide.

LEDs

The LEDs described in the following sections indicate the basic status of hardware
components.

LEDs on the HCM

The HCM provides status and troubleshooting information at a glance. It is located
on the front of the chassis below the FPC card cage, as shown in
on the HCM include two alarm LEDs. The circular red alarm LED at the upper right
of the craft interface indicates a critical condition that can result in a system shutdown.
The triangular yellow alarm below it indicates a less severe condition that requires
monitoring or maintenance. Both alarms can occur simultaneously. For more
information about the alarm LEDs, see
information about the causes of alarms, see
Messages"

LEDs on Hardware Components

LEDs on the faceplates of the following hardware components report their status:

Hardware and Interface Alarm Messages

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
user@host> show chassis alarms
There are two classes of alarm messages:
80
Overview of Troubleshooting Resources
on page 80.
on page 80.
PIC—Most PICs have an LED labeled
additional LEDs, often one per port. The meaning of the LED states differs for
various PICs. For more information, see the M10i Internet Router PIC Guide.
Power supply—A green LED labeled
supply. For more information, see
show chassis alarms
Chassis alarms—Indicate a problem with a chassis component such as the cooling
system or power supplies, as described in
Interface alarms—Indicate a problem with a specific network interface, as
described in on page 82.
Table 17
"Hardware and Interface Alarm
"Alarm LEDs" on page 18. For more
"Hardware and Interface Alarm
on their faceplate. Some PICs have
STATUS
reports the status of the power
OUTPUT OK
on page 22.
"Power Supply LED"
CLI command:
Table 16 on page 81.
Figure 1 . The LEDs