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Budderrick
Budderrick
New Member
September 3, 2020
Question

DHCP Server and "Relay" coexistence

  • September 3, 2020
  • 3 replies
  • 13411 views

Hi Community,

 

Is it possible to have the Fortigate 100F act as DHCP Server and "Relay" in the same VLAN?

I want Clients to get there IP from the Fortigate but everything else forwarded like an additional IP-Helper.

This is mostly for OS Deployment. I know you can configure DHCP Options but this will limited the capability of deployments to specific architectures and devices.

    3 replies

    emnoc
    emnoc
    New Member
    September 3, 2020

    So how would the fortigate know who and what to relay?

     

    Ken Felix

     

    Budderrick
    BudderrickAuthor
    New Member
    September 4, 2020

    It doesn't have to. It answers and forwards "everything" to the additional helper.

    First come first serve for the client. Fortigate shouldn't bother what the clients receives or how it is handling it.

    ShawnZA
    ShawnZA
    New Member
    September 4, 2020

    Re-design your network so that you have a separate VLAN for OS deployments only.

    rwpatterson
    rwpatterson
    New Member
    September 4, 2020

    Budderrick wrote:

    Hi Community,

     

    Is it possible to have the Fortigate 100F act as DHCP Server and "Relay" in the same VLAN?

    I want Clients to get there IP from the Fortigate but everything else forwarded like an additional IP-Helper.

    This is mostly for OS Deployment. I know you can configure DHCP Options but this will limited the capability of deployments to specific architectures and devices.

    This makes no sense to me. Any requests on the VLAN would get IP addresses in the VLAN. What's to forward?

    adGmail
    adGmail
    New Member
    September 6, 2020

    I know its not what you're asking, but what's the reason for not having the remote DHCP server supply the IPs so you can run a conventional relay config?

    Budderrick
    BudderrickAuthor
    New Member
    September 7, 2020

    rwpatterson wrote:

    OK. Thank you for the clarification. Sorry I can't be of more useful assistance. Good luck.

     

    Your welcome. Thank you for helping :)

     

    ad wrote:

    I know its not what you're asking, but what's the reason for not having the remote DHCP server supply the IPs so you can run a conventional relay config?

    I've been thinking about it and probably have to go with that. I wanted to limit the amount of systems needed.

    Thats why I'm asking. I thought about a method using CLI but can't find any documentation about it.

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