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T320 Craft Interface LCD and Navigation Buttons

A four-line LCD is located in the craft interface, along with six navigation buttons. The LCD operates in two modes:

  • LED Idle Mode
  • LED Alarm Mode

During normal operation, the LCD operates in idle mode and reports current status information, as shown in Figure 1.

Figure 1: T320 LCD in Idle Mode

Image g001263.gif

The lines in the display report the following information:

  • First line—Router name.
  • Second line—Length of time the router has been running, reported in the following form:
    Up days + hours:minutes
  • Third and fourth lines—Status messages, which rotate at 2-second intervals. Some conditions, such as removal or insertion of a system component, can interrupt the messages.

To add a message that alternates every 2 seconds with the default status messages, use the set chassis display message command. For more information, see the JUNOS System Basics and Services Command Reference.

When a red or yellow alarm occurs, the LCD switches to alarm mode and reports about the alarm condition, as shown in Figure 2.

Figure 2: T320 LCD in Alarm Mode

Image g001264.gif

The lines in the display report the following information:

  • First line—Router name.
  • Second line—Number of active alarms.
  • Third and fourth lines—Individual alarm messages, with the most severe condition shown first. The prefix on each line indicates whether the alarm is a red (R) or yellow (Y) alarm.

For a list of alarm messages that can appear on the LCD, see Troubleshooting Using the T320 Chassis and Interface Alarm Messages.

Published: 2009-09-30