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T4000 Craft Interface Description

 

The craft interface allows you to view status and troubleshooting information at a glance and to perform many system control functions. It is hot-insertable and hot-removable. The craft interface is located on the front of the T4000 Core Router above the FPCs (see Figure 1).

Figure 1: Front Panel of the Craft Interface
Front Panel of the Craft Interface

Craft Interface Front Panel

The front panel of the craft interface contains:

  • A four-line LCD display, along with six navigation buttons. The LCD display operates in Idle mode or alarm mode.

  • ONLINE/OFFLINE button for each FPC that you use to take the FPC offline and bring it online. The button is located next to the FPC LEDs on the bottom of the craft interface.

  • LEDs

    • Yellow Minor Alarm LED, Red Major Critical Alarm LED, and alarm cutoff/lamp test ACO/LT button

    • Host subsystem Master, OK, and FAIL LEDs

    • SIB OK and FAIL LEDs

    • FPC OK and FAIL LEDs for the fans

Craft Interface LCD

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 2.

Figure 2: LCD in Idle Mode
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:

  • 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.

When a red or yellow alarm occurs, the LCD switches to alarm mode and reports the alarm condition, as shown in Figure 3.

Figure 3: LCD in Alarm Mode
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.