LANCOM Support Knowledgebase Document No. 1906.1813.5357.MMÜL - V1.10

vRouter: Downgrading the vRouter from LCOS 10.30 to LCOS 10.20 only possible after converting the VM from SATA to IDE (VMware ESXI)


Description:
vRouters using LCOS 10.30 and later operate a virtual disk based on the SATA bus interface. Previous vRouter versions still use the IDE bus interface.

The result is that a firmware downgrade causes an immediate restart (Watchdog).

To conduct a firmware downgrade, the hard disk controller of the virtual machine (VM) must be converted from SATA to IDE.

This article describes how to enable a firmware downgrade by converting the vRouter VM in VMware ESXI from SATA to IDE.

    Info:
    MS Azure is not affected because there is no change to the hard disk controller.

    When using MS Hyper-V, the VM has to be created. The standard procedure creates an IDE hard disk. This is described in the installation guide for Hyper-V.

    The
    vRouter from version 10.30 is able to handle virtual SATA and IDE controllers. A fresh installation of the vRouter in version 10.30 uses SATA.

    A
    downgrade to firmware 10.12 or earlier is only possible by reinstalling the vRouter (also see Document Link Icon). This also applies to an upgrade from version 10.12 or earlier to version 10.30.



Requirement:
  • vRouter on VMware ESXI



Procedure:

Important:
Save your settings after each step of the configuration in the web interface. Otherwise, changes may be discarded or the entire configuration of the VM may even become unusable!


1) Downgrading the firmware from 10.30 to 10.20:

1.1) Open the management interface of vSphere.

1.2) Shut down the vRouter by highlighting the vRouter and clicking the red button Shut Down Guest OS.



Alternatively, you can shut down the vRouter using the CLI command do Other/Shutdown.



1.3) Right-click on the vRouter VM and, in the context menu, open the VM settings by clicking on Edit settings.



1.4) Delete the CD/DVD drive 1 by clicking on the X (the virtual CD/DVD is no longer required after completing the installation). Otherwise, the hard disk cannot be assigned to the IDE master.

Save the configuration by clicking on OK.



1.5) As described in step 1.3, use Edit settings to enter the VM’s configuration menu.

1.6) Under the Virtual Device Node, set the first drop-down menu to IDE 0 and the second drop-down menu to IDE(0:0) hard disk 1.

Save the configuration by clicking on OK.



1.7) As described in step 1.3, use Edit settings to enter the VM’s configuration menu.

1.8) Delete the SATA controller under SATA controller 0 by clicking on the X.

Save the configuration by clicking on OK.



1.9) This concludes the settings in ESXI. The firmware downgrade from version 10.30 to 10.20 can now be carried out.



2) Upgrade the firmware from 10.20 to 10.30:

Important:
An upgrade from version 10.20 to 10.30 is only possible when using the loader version 4.79.0001.

You can read out which loader you are using with the following CLI command:

ls Firmware/Table-Firmsafe/


2.1) First perform the firmware update from version 10.20 to 10.30.
    Info:
    This intermediate step is required because version 10.20 of the vRouter does not support SATA.

2.2) Open the management interface of vSphere.

2.3) Shut down the vRouter by highlighting the vRouter and clicking the red button Shut Down Guest OS.



2.4) Right-click on the vRouter VM and, in the context menu, open the VM settings by clicking on Edit settings.



2.5) Use the button ADD NEW DEVICE to add a SATA controller.

Save the configuration by clicking on OK.



2.6) As described in step 2.4, use Edit settings to enter the VM’s configuration menu.

2.7) Under the Virtual Device Node, set the first drop-down menu to SATA controller 0 and the second drop-down menu to SATA(0:0) hard disk 1.

Save the configuration by clicking on OK.



2.7) This concludes the settings in ESXI.

Catchwords: vRouter; Downgrade; LCOS 10.30; older; firmware
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