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boma23
boma23
New Member
June 16, 2021
Question

Configure DHCP Options for VLANs which are members of a ZONE via GUI?

  • June 16, 2021
  • 2 replies
  • 7212 views

Hi All,

 

May sound stupid, but I'm still new with Forti.  I've got a FW I built over a year ago, and need to go back and alter DHCP addressing options for some of the VLANs which are members of a ZONE.   I cant seem to be able to do this anywhere in the GUI, whilst I can for network interfaces which aren't members of zones. 

 

Is this normal, or am I missing an options screen anywhere?  Is this a CLI only config?

2 replies

lobstercreed
lobstercreed
New Member
June 16, 2021

Whether it's a member of a zone or not should have no bearing on the options available for DHCP.  The VLAN interface should still appear as a subinterface of the physical interface it is tagged on.

boma23
boma23Author
New Member
September 17, 2021

I can see the VLANs listed as sub interfaces - but nowhere do I get the options to admin DHCP for them? I can't see anything under interfaces or objects either, and don't see VLANs listed anywhere else.

 

lobstercreed
lobstercreed
New Member
September 20, 2021

Not sure what FortiOS you're on -- might be relevant but I've had no trouble with this in recent memory (6.0 and up).  Here's the admin guide for 6.4 (what I run)

 

https://docs.fortinet.com/document/fortigate/6.4.0/administration-guide/783526/dhcp-server 

 

You say you can see the VLANs listed as subinterfaces -- what does the screen look like when you edit the subinterface?  Should be exactly the same as any physical interface -- do you see the DHCP options under a physical interface?

boma23
boma23Author
New Member
September 17, 2021

bump for this!  I can't find anything in the admin guide, or even online.  I feel like i must be missing something obvious, or a GUI view has something hidden from me?  It hasn't been urgent up till now, but need to get this adjusted now.

 

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