Juniper Networks M160 manual LEDs on the Craft Interface

M160 Internet Router Hardware Guide

console, and the port labeled ETHERNET attaches to a management LAN. For more information, see “Routing Engine Management Ports” on page 33.

For information about using the CLI to display details about alarms generated by interfaces and hardware components, see “Chassis and Interface Alarm Messages” on page 209.

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 Craft Interface

The craft interface provides status and troubleshooting information at a glance.

It is located on the front of the chassis above the FPC card cage, as shown in

Figure 1. The LEDs on the craft interface include the following:

Alarm—The circular red alarm LED at the upper left of the craft interface indicates a critical condition that can result in a system shutdown. The triangular yellow alarm next to it indicates a less severe condition that requires monitoring or maintenance. Both alarms can occur simultaneously. When an alarm LED is lit, the LCD describes the cause of the alarm. For more information about the alarm LEDs, see “Alarm LEDs and Alarm Cutoff/Lamp Test Button” on page 28. For more information about the causes of alarms, see “Chassis and Interface Alarm Messages” on page 209.

FPC—For each of the FPC slots in the router, there are two LEDs and an offline button located on the craft interface directly above the slot. The green LED labeled OK and the red LED labeled FAIL indicate FPC status. For more information, see “FPC LEDs and Offline Button” on page 31.

Host module—Two sets of LEDs at the upper right corner of the craft interface indicate the status of the two host modules. Each set includes three LEDs—a green one labeled MASTER, another green one labeled ONLINE, and a red one labeled OFFLINE. For more information, see “Host Module LEDs” on page 31.

208 Overview of Troubleshooting Resources