LCD Operation

This section describes the operation of the LCD panel for the Arista 5310 and Arista 5510 Enterprise WAN Routers.

Figure 1. LCD Components

1 2x16 LCD screen
2 Top button
3 Bottom button

Buttons Functionality

The physical buttons are referenced as follows:
  • The Top button is located next to the less-than (<) symbol.
  • The Bottom button is located next to the checkmark (✔️) symbol.

Each button has a functionality based on the button and how long the button is pressed.

Button Press Duration

< 2 Secs

 Press Duration

>= 2 Secs
Top button scroll home
Bottom button select confirm

 

Booting

Once the power is on, the LCD displays the image shown below:


Once the bootloader is booted and when the EOS image has begun loading, the LCD displays the image shown below:


 

Home Screen

Once the EOS has successfully booted, the LCD displays the home screen. The following image is an example output:


The first line displays the hostname, and the second line displays the IPv4 address of the management interface.

Note: At any point, you can hold the top button for 2 seconds (“home” function) to return to the home screen.

 

Menu Choices

Starting at the home screen, use the top button (“scroll” function) to scroll through possible menu choices. The menu choice displays on the top line.

To select the menu item, press the bottom button (“select” function).

Note: If you do not select within 10 seconds, the LCD will return to the home screen. Alternatively, use the “home” function to return to the home screen.

 

Menu Item Output

Although the physical display is limited to 2 rows and 16 characters per row, a menu item may display a larger virtual information display. If the width of the line being displayed is wider than the physical screen, then the display will automatically scroll back and forth to display the entire line.

If the number of lines displayed exceeds the physical height, then you can scroll through the output by using the LCD buttons. Use the top button (“scroll” function) to see earlier lines, and use the bottom button (“select” function) to see later lines.

 

System Info

The System Info menu item shows the following information:

  • Model name

  • EOS version

  • Hardware revision

  • Serial number

  • MAC address of the management interface

Example:

The following figure shows the first two lines of the data:

The following figure shows the data displayed after pressing the bottom button twice:

The following figure shows the data displayed after pressing the bottom button again: