RV320: DHCP Option 82 + DHCP relay at Ethernet switch

Question

We purchased a RV320 router and want to use the DHCP Option 82 IP Assignment in combination with a ZyXEL GS1910-24 Smart Managed Switch.
The switch is able to insert Option 82 Circuit-IDs into DHCP requests, if they are relayed to a specific DHCP server. So there must be configured exactly one IP address of the DHCP server in the switch configuration (eg 192.168.1.1). The problem is, that the RV320 creates different IP subnets for different Circuit-IDs. So the RV320-router has multiple IPs, one unique IP per subnet (192.168.1.1, 192.168.2.1, 192.168.3.1, ...).
How can I use the Option 82 IP assignment with this configuration?
Is a routing/firewall rule at the RV320 a solution (to forward DHCP requests from subnet specific IP - eg 192.168.3.1 - to exactly one IP, eg 192.168.1.1)?

Answer 1

mpyhala,
seems not to work as the RV320 is restricted to 6 custom VLANs (+ 1 Management VLAN with ID 1).
Maybe I should describe the whole scenario, which should be implemented:
The configuration is like for a small hotel: each room should be logically seperated from each other (no inter-room traffic for security) and each rooms bandwidth should be managed.
Bandwidth management at the RV320 relies on IP addresses. So I need to achieve somehow, that a room (= port number on switch) is always assigned a specific IP address.
14 rooms should be covered in that way.
The problem is currently the link IP<->Switch Port. I thought DHCP option 82 is the way to go, but VLANs (one VLAN for each room) may be also a solution. Unfortunately none of the two ways work.
What can be a solution? Was the RV320 the wrong decision (not enough flexibility)?
Thanks.