How to make FOG work over various VLANs



  • I am very new to FOG so please be patient…

    I have a brand new installation of FOG and what I need it to do is to be able to find computers and deploy images over various VLANs that I have users on. Also, I will be having various images for different users.

    I know there is a way to do this but have not been able to figure it out.


  • Senior Developer

    Fog can hold all the inventory as well. Makes thing very easy down the road.

    If you know the MAC’s and Hostnames, you could create a CSV that contains the MAC and Hostname. I forget all the bit’s and bobs, generated from your current inventory to make importing them that much easier.



  • Ok well that at least gets me running in the right direction…

    So I will do manual entry as this is not a big problem as I use Spiceworks to keep a running inventory of my equipment.


  • Developer

    You have to register every machine you want to use with FOG to the FOG server.

    There are scripts around that will allow you to do things without registering them, but really, the best method is the register them so you can keep track of what image is installed on the host.



  • Yes all system work off of one DHCP server.

    Yes I have full access to the switches.

    Enterasys SSA L3

    Yes I can modify them if needed.

    Yes they are managed switches

    All pertinent VLANs already have the ip-helper address installed

    **Maybe I am missing something here, does FOG not automatically find the computers on my network or do I need to add them in individually into the Host Management page?

    I have a test PC setup with FOG service installed and I finally went and manually added it to the Host Management screen.

    All of this is for a new system deployment where my community college is separating from the parent university and we are building our own image for deployment to various off-site campuses whereas instead of having to go to each and every off-site computer I am hoping to deploy OUR new image from the IT office remotely. Various off-site locations are spread over a 200 mile area.


  • Senior Developer

    They are very handy.


  • Developer

    [quote=“Tom Elliott, post: 23043, member: 7271”]

    I ask all these questions because if you have only one DHCP server and your systems work fine throughout, you may want to look into the ip-helper commands.

    Where I work, we have a similar type of setup, and from our “Master” switching location, we just ran ip-helper for all of the subnets to point at our DHCP Server. Then just set the DHCP Server scopes to point Options 66/67 to the FOG Server/File (respectively).[/quote]

    I use these, it’s pretty awesome :)

    I also set up some nodes on the sites, but that is a different story.


  • Senior Developer

    I’m assuming, all systems work off the same DHCP Server, or do you have multiples of them?

    Do you have access to the switches within your organization?

    What kind of switches?

    Are you allowed to modify the switches?

    I’m also wondering if they’re managed switches?

    I ask all these questions because if you have only one DHCP server and your systems work fine throughout, you may want to look into the ip-helper commands.

    Where I work, we have a similar type of setup, and from our “Master” switching location, we just ran ip-helper for all of the subnets to point at our DHCP Server. Then just set the DHCP Server scopes to point Options 66/67 to the FOG Server/File (respectively).


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