@vikd said in InterVLAN routing with DHCP on layer 3 switch:
VLANs and interfaces in pfsense and not possible to hand out IPs via DHCP ?
You can hand out IPs to network directly attached to pfsense, you can not hand out dhcp to a L2 network this is not directly connected to pfsense.
If your routing these downstream of pfsense, then that is a different L2 network.
All of your downstream networks would use pfsense to get to the internet, or could even use it for dns, etc. etc.. Or other networks hanging off of pfsense. But once you create downstream networks that router to other downstream networks at your L3 switch, this is not a directly attached network to pfsense and you wouldn't be able to hand out dhcp to those networks. If your switch can not do dhcp, then its a pretty crappy L3 switch.. But if it can not - then run something else on each of the L2 networks for dhcp. Or run something that allows you to create dhcp pools for non connected network - stand alone version of isc dhcpd can do this, etc. Then you would setup IP helper or dhcp relay on your switch to point to this dhcpd. But pfsense can not do dhcp for network that are not directly attached at the L2 level.
If your wanting to route at your downstream and put pfsense in the same L2 as these networks, ie you created the vlan - then your going to run int asymmetrical routing problems unless you host route on all of your devices saying to get to some other network talk to yoru switch, but to get to internet talk to pfsense, etc..
The drawing I attached shows you how to properly do downstream networks, and also have a network or networks attached directly to pfsense..