LCD Panel in EX4300 Switches
The LCD panel on the front panel of the EX4300 switches except EX4300-48MP and EX4300-48MP-S switches shows two lines of text, each with a maximum of 16 characters. The LCD panel displays a variety of information about the switch and also provides a menu to perform basic operations such as initial setup and reboot.
There is no LCD panel on EX4300-48MP and EX4300-48MP-S switches.
There are two navigation buttons—Menu and Enter—to the right of the LCD panel.
See Figure 1.
LCD panel Menu button
LCD panel Enter button
Chassis status LEDs
The first line of text on the LCD panel displays basic information about the switch and the second line of text displays information about the mode selected on the LCD panel. You can configure the second line of the text for the LCD panel to display a custom message. If the LCD panel is configured to display a custom message, the Menu button and the Enter button are disabled. See Configuring the LCD Panel on EX Series Switches (CLI Procedure).
The LCD panel has a backlight. If the LCD panel is idle for 60 seconds, the backlight turns off. You can turn on the backlight by pressing the Menu or Enter button once. After turning on the backlight, you can toggle between the LCD panel menus by pressing the Menu button and navigate through the menu options by pressing the Enter button.
The chassis viewer in the J-Web interface also displays the LCD panel. From the J-Web interface, you can view real-time status information in the LCD panel. See Dashboard for EX Series Switches.
LCD Panel Modes
The LCD panel operates in four modes: boot, idle, status, and maintenance.
The first line of text on the LCD panel displays the slot number, the role of the switch, and hostname in all the modes.
For a standalone EX4300 switch, by default the slot number is 00, and the role is RE.
In an EX4300 switch that is a member of a Virtual Chassis, the first line of the LCD panel always displays:
The slot number (the member ID of the Virtual Chassis member)
Role of the switch in the Virtual Chassis (RE for master, BK for backup, and LC for line card member)
The LCD panel operates in boot mode during switch reboot. In the boot mode, the second line of the LCD panel displays the key milestones in the switch boot process. The boot mode does not have any menu options. After the boot process is complete, the LCD panel automatically reverts to the Idle (IDLE) menu.
In idle mode, the second line of text on the LCD panel displays the mode of the network ports’ Status LED and the number of chassis alarms. The number of alarms is updated every second.
In status mode, the second line displays:
Status of the Virtual Chassis port (VCP)
Status of the power supplies
Status of the fan modules and the chassis temperature
Version of Junos OS for EX Series switches loaded on the switch
In maintenance mode, the second line displays one of the following options, which you can use to configure and troubleshoot the switch:
Request VC port
LCD Panel Menus
The LCD panel has three menus: Idle, Status, and Maintenance. You can toggle between the LCD panel menus by pressing the Menu button and navigate through the menu options by pressing the Enter button.
Table 1 describes the LCD panel menu options.
Table 1: LCD Panel Menu Options in EX4300 Switches
In the Idle menu:
In the Status menu, press Menu to cycle through the following information:
You can disable the Status menu or the options in the Status menu in the LCD panel. See Configuring the LCD Panel on EX Series Switches (CLI Procedure).
MAINT (Maintenance Menu)
The Maintenance menu has the following options to configure and troubleshoot the switch:
You can disable the Maintenance menu or the options in the Maintenance menu in the LCD panel. See Configuring the LCD Panel on EX Series Switches (CLI Procedure).