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Systems Deployment Question


DHCP Option 66 and 244

08/22/2019 262 views
At the moment we use the DHCP option to tell the clients the IP of the RSA. Now we had the problem some time ago that an RSA has failed and this has caused boot problems on some machines. Now the question arises to me whether it is possible to use the option 244 as a kind of backup, thus here an IP of another RSA to register. Does this make sense?
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  • not a good idea, both the RSA and SDA are LAN designed products, avoid using them across Internet.

    Btw, What kind of "Boot Problems" are you referring to?

    I mean once a machine is Imaged, they do not need the RSA\SDA to be there, to boot at all....

    Unless you have been relying on chainbooting for Windows to Load, this happens when "pure UEFI" devices (devices who are not compatible with the MBR anymore), were imaged in Legacy Mode or with Legacy Image, and now if the RSA\SDA is not there to chainboot, they can't boot to Windows on their own?

    See:
    https://en.wikipedia.org/wiki/Chain_loading

    See:
    https://www.dell.com/support/article/us/en/19/sln301692/no-boot-device-found-when-you-change-the-boot-sequence-to-legacy-mode?lang=en
  • All of our devices are running in legacy mode. The problem was that the devices hang up during startup when the pc tries to reach the rsa while the rsa was offline due to a hardware failure. Currently the boot order ist NIC (with PXE) -> HDD. After we changed the IP in the DHCP Option to another RSA everything worked fine.

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2

this is possible and if the RSA is reachable it also makes sense. But it is always a bad idea to deploy over the internet due to the size of the deployments (iE images)

Answered 08/22/2019 by: Nico_K
Red Belt