T320 Craft Interface LCD and Navigation Buttons

• 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

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 OS 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

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 T320 Chassis and Interface Alarm Messages Overview.