I have 1300 bridges in station root and non-root mode and all the vlans can communicate across it with address assigned. But when a new unit (pc or phone) is attached.....the DHCP broadcast does not get sent across the wireless link to the DHCP server. What config change is needed to allow these broadcasts?
The DHCP relay would need to be on the first layer 3 interface that the broadcast will get to.
Do you have a switch attaced to the non-root bridge or are you just directly attaching a device to the bridge?
If you are using a switch, you will need to set the switchport to use the proper VLAN that you desire.
As for the DHCP scope being on the router, you need to be certain that is in the same network as the VLAN you are connecting to. If your switchport is setup for VLAN10, and you do not have scope defined in the network space for VLAN10, then you will not get an address.
DHCP scopes will only assign an address to a device that is in the same VLAN that it is established for.