Kemp Support, how can we help?

The latest application delivery knowledge and expertise at your fingertips.

How to recover VLM configuration reset to factory default settings after Migrating/Moving Virtual LoadMaster (VLM) to another Host





Virtual LoadMaster (VLM) configuration has been reset to factory default settings after VLM was Migrated/Moved to another Host.


Product: LoadMaster

Version: Any

Platform: Any Virtual Platforms

Application: Any

Question/Problem Description:

Users that have migrated or moved their VLM machine to another host has resulted their VLM losing its configuration and reset the VLM configuration back to factory default settings. The VLM Web User Interface(WUI) Access page is not accessible due to MGMT IP configuration reset to default X.X.X.X IP address. All Services have currently down & stopped.

Steps to Reproduce:  
Error Message:



Defect Number:  
Enhancement Number:  
Cause: Virtual LoadMaster (VLM) license is generated by an access code. This access code is created by the host’s Interface MAC Address. If the interface MAC Address of a VLM is not set to a "static" or "manual" value then it will be reset once the VLM is migrated or moved to another host. This will change the access code of the VLM which results in the VLM license becoming invalid and configuration reset to factory default settings.

Locating and assigning the original MAC Address for the Virtual LoadMaster (VLM) interface Eth0 will resolve this licensing issue and resume the VLM’s functionality & Services.

If unable to locate the original MAC address, restore or rollback the VLM migration in-order to obtain the original MAC address value and manually set the MAC address to static.

To Modify your MAC address for VLMs which are deployed on VMware ESX and Hyper-V, please use the following steps.

For VMware ESX:-

  • Locate a virtual machine in the vSphere Web Client.
  • Right-click the virtual machine and select Edit Settings.
  • On the Hardware tab, select the network adapter for Eth0.
  • In the MAC Address section, select Manual from the drop-down menu.
  • Type the correct MAC address and click OK.

For Hyper-V:-

  • In the Hyper-v Manager, right-click the VLM and select Settings.
  • Expand the first Network Adapter listed for Eth0.
  • Click Advanced Features.
  • Under MAC Address, select the Static radio button.
  • Type the correct MAC address.
  • Click OK to save the settings.


Workaround: If unable to obtain original MAC address or restore/rollback Virtual LoadMaster (VLM) migration, please contact support to help resolve this issue.

Was this article helpful?
0 out of 0 found this helpful