LANCOM Support Knowledgebase
Document No. 1109.0114.0213.RHOO - V2.00
Centralized firmware management with LANCOM WLAN controllers using a USB flash drive as a file server (only with WLAN controllers WLC-4006(+), WLC-4025+ and WLC-4100)
This document describes how to update the firmware of managed LANCOM access points with a LANCOM WLAN controller and a USB flash drive acting as a file server.
The latest LCOS firmware (
The latest LANtools (
Preparing the USB storage medium:
The following describes how to set up a USB medium for operating with a LANCOM device:
Format the USB medium with the
Create the directory
on the USB medium. In the default setting, the HTTP server in LCOS only accesses files in that directory and its subdirectories (e.g. a subdirectory called
). All other files on the USB medium are ignored.
Connect the mass storage device to the USB connector on the LANCOM device.
1) Open the configuration dialog of the WLAN controller in
and navigate to the tab
WLAN controller -> AP update.
In the field
, enter the address of the USB stick where the firmware file/s is/are saved.
When using a USB stick, the
the following syntax
127.0.0.1/filesrv/<mountpoint>/<folder name in the
directory on the USB stick>
3) In the field
Max no. of loaded firmware files
enter the maximum number of files that the WLAN controller is to store in its memory at the same time. The default value is five. Depending on your requirements, you can vary the number between 1 and 10.
4) Click on the
Firmware version management
5) Click on the
button in the
firmware version management
6) Using the drop-down menu, define the
type for which the firmware is to be managed.
7) If you specify a
firmware management is limited to the specified device only. If you specify
000000000000 the entry applies for all units of the specified device type.
If you specify
the firmware management applies to all devices. In this case it is possible to specify any MAC adress albeit it is advisable to specify the first address available in the drop-down menu (
8) In the
box, Specify the firmware version to be taken for the specified devices or device types. This is stated in the form: X.YY, e.g. 9.24.
In the case of a firmware upgrade to a newer version, it is not necessary to create a completely new entry in the firmware management list. All you have to do is
the version number in the
field (e.g. to 9.24).
allows you to downgrade to a specific firmware version within a release, for example from a Release Upgrade (RU) on an earlier upgrade. Possible values: 8 characters from 0123456789. The entry must match the format of the UPX header, e.g. "01092014" for the September 01, 2014.
9) Close the configuration dialogs with the
button and write the configuration back to the WLAN controller. The firmware update commences once the configuration is written to the device.
The new firmware is only activated on the access points once they have been restarted. You can do this manually (as of
. If it is not possible to reboot the access points during operations, you can create a cron job on the WLAN controller, which performs the restart during the night hours, for example:
Open the configuration dialog
Date & Time -> General -> Cron table
for the WLAN controller.
Click on the
button to create a new cron job.
In the fields
, enter the desired values. In this example, the cron job will run daily at 01:00 AM.
the following command line:
Close the configuration dialogs with the
button and write the configuration back to the WLAN controller.
10) To restart the access points manually, open the configuration of the WLAN controller in WEBconfig and go into the menu
LCOS menu tree -> Setup -> WLAN management -> Central firmware management.
Here, click on the option
Reboot updated APs
11) Click on the
button in the next dialog window.
12) A message is displayed to indicate the execution of the reboot command. The access points with updated firmware now reboot.
Catchwords: wlan; controller; central; firmware; management
Please review this document!
This document was helpful
This document was