Disable DHCP option 60 when PXE booting
-
Hello everyone,
I know this is not the right forum but ill give it a shot anyways.
We are currently migrating from VMware to XenServer and we encountered a problem when PXE booting hosts from XenServer to Citrix PVS. In VMWare it works but not with XenServer, we found that the hosts from XenServer "asks" for the DHCP option 66 and VMware does not. If we configure option 66 in the DHCP server it works, but this is not what we are after.
Citrix themselves says that it's not possible to disable option 60 when its booting from IPXE, but I can't see why, isn't it possible to modify the "configuration" for IPXE?
Thanks in advance
-
Hi,
This is an XCP-ng forum, and Citrix already answered, so I'm not sure what are you expecting in here? I mean, even if we tinker something in XCP-ng, you are using XenServer, so maybe I have not understood your request?
-
@olivierlambert from my understanding XenServer and XCP-ng are "almost" the same, if it were possible to edit the configuration in XCP it should be doable in Xen aswell. I understand fully that this is not the forum for Xen related stuff, but if this is doable in XCP we are looking to change the hypervisor to XCP instead of Xen.
-
It's XenServer, not just Xen (Xen is the "core" hypervisor)
(because we are also keen to discuss Xen related dev in here).But yes, we share a lot of similar code. However, this might require some investigation, especially since Citrix says it wasn't possible. We can try to take a look on our free time though.
-
@olivierlambert sorry bout that
there is no need to investigate further if this isn't like a one liner fix. I'm very new to this is my first hypervisor project, i just thought that there was a configuration file or something in XenServer where you could edit option 66 out or like modify the ISO that IPXE is using. -
I don't know if this rings a bell @stormi
-
So is it option 60 or 66? It varies throughout the thread
-
As far as I know, DHCP options 66 and 67 (plus option 60 in UEFI mode from what I read) are the common way to specify where to find the network bootloader during PXE booting. I don't know how VMWare does it differently nor whether it does it in a standard way.
-
@stormi sorry for the confusion my brain is a potato at this moment and im dreaming about dhcp options at night,.. I want to disable option 66 and only keep option 60 (in option 60 i can add more than one PXE boot server, in 66 i can only specify one server).
-
@PontusB i don't even know if disabling option 66 solves the issue but as soon as we add option 66 in our DHCP server it boots fine from XenServer (but without HA between the many PVS servers).
