topic Re: DHCP relay - main bond or individual interfaces in Firewall and Security Management

DHCP relay - main bond or individual interfaces

mobrien — Fri, 10 Jan 2025 17:01:37 GMT

For DHCP relay on the SG's, if you have bond1, and then you have your interfaces on bond1.1, bond1.2, bond1.3 for example, if you are trying to add the same relay for all of the interfaces, do they need to be individually assigned to the vlan interfaces, or can you put them on the main bond and all the interfaces will inherit the configuration?

Re: DHCP relay - main bond or individual interfaces

PhoneBoy — Fri, 10 Jan 2025 17:33:41 GMT

Believe they need to be added on each individual bond.

Re: DHCP relay - main bond or individual interfaces

Chillyjim — Fri, 10 Jan 2025 18:09:01 GMT

I'd like to know the final answer to this one, as I always thought it was the bond interface, but then again, it's been ages since I've done it (c. MetaIP).

Re: DHCP relay - main bond or individual interfaces

Duane_Toler — Fri, 10 Jan 2025 22:22:51 GMT

You have to configure each Layer3 interface from which you want to relay DHCP to a remote server. I do this exact thing on several customer gateways. If your bond1 interface has no IP (aka "VLAN 1", or whatever your native/un-tagged VLAN is), then no need to configure that. For the other VLAN sub-interfaces, you do, because each of them are different layer-3 networks. There is no configuration inheritance.