topic Re: DHCP on sub-interface in Network Security

DHCP on sub-interface

codewize — Fri, 11 Aug 2023 21:20:26 GMT

Hello, I'm configuring a Firepower 1010 Appliance. I'm very well versed in FMC and larger boxes so the FDM is a bit new to me.
How or can I configure a DHCP server for internal clients on a sub-interface?

Re: DHCP on sub-interface

Kasun Bandara — Sat, 12 Aug 2023 02:06:09 GMT

Hi @codewize you need to create DHCP server relevant to sub interface network address range. check below

https://www.cisco.com/c/en/us/support/docs/security/firepower-ngfw/200475-Configure-DHCP-Server-Relay-on-FTD-Using.html

Re: DHCP on sub-interface

codewize — Sat, 12 Aug 2023 20:40:52 GMT

Thank you all, I had not clicked on the twistie thing to expand my trunk interface.
The trunk itself looked 'greyed out' so I didn't think I could do anything with it. Then I decided to try again and was able to create the DHCP server required.

Thank you. FDM is so different than managing these devices with FMC

Re: DHCP on sub-interface

hunnymonster — Mon, 14 Aug 2023 08:04:37 GMT

That's the most charitable description of FDM versus FMC I've read in a while. Is there any reason not to manage via FMC?

Re: DHCP on sub-interface

codewize — Mon, 14 Aug 2023 13:03:15 GMT

FMC is awesome but it requires licensing and some platform to either run a VM on or the dedicated box.
So at home I chose to just run the FDM deployment.