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The three LCD panel’s buttons and ID button have different functionality based on a security setting set in BBB (BMC BIOS Binary) and other tools. There is no method to set these states through the LCD menu system.

View and Modify (Default) - The user has full access to the LCD menu and can modify values (e.g. the IPv4 address, or the selection of the System Descriptor). If a value is being changed via the LCD AND a security lockout is sent remotely (either View Only or Disabled), then the session is terminated, the LCD returns to Home Mode, and all changes are discarded.

Disabled- The user has no access to the LCD menu nor the chassis ID button. The user cannot invoke the chassis ID functionality by pressing the ID button. In addition, the user can only see the System Descriptor String and the error messages.

The ID button if pressed for more than 15 seconds reset the iDRAC regardless of the disable state. The reset functionality can be disabled such that no iDRAC reset occurs when ID button is pressed for longer than 15 seconds.

Dell EMC guidance to mitigate risk and resolution for the iDRAC multiple vulnerabilities. For specific information on affected iDRAC versions and next steps to apply the updates, refer to this guide.

Toggle Dell EMC XC Series Appliances and XC Core Systems Best Practices for Running VMware ESXi 6.7 or Later Clusters on XC Series Appliances and XC Core Systems panel

If your Dell EMC PowerEdge system is equipped with an LCD panel, it can be used to configure or view the iDRAC IP address of the system. The LCD panel is available only on an optional front bezel.

From the Setup menu, use the iDRAC option to select DHCP or Static IP to configure the network mode. If Static IP is selected, the following fields are available:

In the server’s own BIOS options there is a Custom LCD field but entering text here and restarting doesn’t change the panel – it still just shows the Service Tag. Strangely, the iDRAC BIOS doesn’t offer you any control here at all, it just lists what the custom string currently is.

To make matters worse, I had accidentally got the desired result on one of the servers, but couldn’t get the second one configured. The answer lies with the buttons next to the LCD. Though you can view IP settings, temperature, power usage, etc., there is also a Setup option. With 48GB of RAM, each POST of the machine takes about 5 minutes so I had been too cautious to mess about with these options in case I undid some of my initial iDRAC config. I assumed that they would only provide a subset of the BIOS options. Wrong! You needto use the panel – even the iDRAC WebUI doesn’t seem to configure the LCD screen.

Dell offers a distinctive range of LCD front panel display options on 12G PowerEdge servers. The LCD front panel can be used to configure the Integrated Dell Remote Access Controller (iDRAC7) without accessing a server’s console. This permits customers to use Internet Protocol to configure the iDRAC7 remotely and easily manage and monitor the server. Also, this LCD panel makes it easy to identify a given server in the data center.

The LCD front panel allows a user to viewandchange the network settingsof the Dell Integrated Dell Remote Access Controller (iDRAC7). In fact, most of the iDRAC7 configuration can be done using this screen, and quite a bit of the iDRAC7’s features can be accessed here as well, and, of course, system-level error messages will be displayed on the LCD. Another convenient feature offered by the LCD Front Panel, is the ability to setup a user-defined message on the LCD. In this document, we will discuss these features in greater detail.

The LCD front panel displays user-configurable information about the system. The screen displays system information and error messages, depending on the condition of the system.

However, the LCD backlight will remain off if LCD messaging is turned off; this can be done via the web-based graphical interface, IPMITOOL, Open Manage System Administrator, or a command line tool such as RACADM.

The number of LEDs on a particular server depends on the amount of physical space available on the front of the chassis. There are four different LED configurations: one with six icons, two others with four icons each, and one with a single LED icon. An example of one such LED panel, from a PowerEdge R720xd is shown below. It will display alerts for general status, hard drive, electrical, thermal, memory and PCI alerts. As with the LCD panel, if trouble arises, an amber indicator will illuminate.

The identification buttons on the front and back panels can be used to locate a particular system within a rack. This is especially helpful with a densely populated rack when a single system needs to be identified, from either the front or back. If you push one of these buttons, then both the front and rear system status indicators will flash until one of the buttons is pressed again. As a side note, this flashing can also be activated or deactivated remotely with various Open Manage tools.

It is easy to use the LCD panel to configure network settings and check other system properties. The chart (below) shows the different possible actions and settings available through this panel:

The front panel gives alerts by displaying system error messages. These alerts will cause the LCD backlight color from blue to amber and depending on the nature of the alert, different indicators, depending on the type of panel, will illuminate. Using the front panel, the way system alerts are displayed (or not displayed) can also be changed. The types of alerts covered are as follows:

In all, up to 20 different error messages can be displayed through the LCD front panel. In the event that there are multiple error messages, the most recent error will be displayed.

It is important to note that the front panel buttons, by default, have the ability to both view and modify the values that are shown. Using the iDRAC tools, it is possible to limit the panel and buttons to either a view-only state or disable the menu completely, allowing a user to only view the system description and any existing error messages.

Through iDRAC7’s software tool or another remote command line tool, a user can enable front-panel notification that a vKVM is attached. If this is enabled and a vKVM session is active on the unit, then the text “virtual console active” will be displayed. If an error occurs, the LCD will enter Error Mode and the “virtual console” message can only be viewed only by navigating up the menu tree to Home Mode. There the “virtual console active” message will display for ~45 seconds before returning to the Error Mode.

During system boot, the LCD displays “System booting…” until video is available. This is to give the user indication that the system is booting and video is unavailable at this time. Shortly after power-on or reset, "System booting…" appears on the LCD, with periods appearing for each progress code in the pre-video sequence as they are received from BIOS. Once full memory initialization is complete, the LCD returns to its normal mode

If the system ID button is held down for more than 15 seconds, then the iDRAC will reset. This will cause the LCD panel to go blank until the iDRAC is once again fully functional. At that point, the display will show the current state of the server.

One last point worth noting: the LCD panel can be configured remotely by the iDRAC’s software suite as well as through RACADM (command-line) or IPMITOOL software packages.