There are two main concepts to understand for this setup:
1) Each scope needs a route to reach the intended VLAN via the route setting in the scope;
2) Your core switch that controls your VLAN settings needs to have a "helper IP" set to know where to route DHCP requests on each VLAN. In addition to these settings, the DCHP server's assigned VLAN and static IP address must have the ability to reach each VLAN segment that it is serving via inter-VLAN routing if the DCHP server only has a single network interface.
So, don't put your DCHP server on a VLAN with other servers or devices that should not be reachable by endpoint devices that it is servicing for DCHP requests. For example, don't put your DCHP server on your servers VLAN and have it serve up DCHP requests for your Guest Wifi VLAN.
Also, just a quick note about the Filters setting. Filters are applied to the entire DHCP server instance, not on a per-scope basis. If you enable ALLOW filtering, only those MAC addresses listed in the Allow filter list will get an IP address via DCHP. All other DHCP requests will be denied. If you enable DENY filtering, any MAC address in the Deny filter list will be denied an IP address while all other devices will be assigned an IP.
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