A device is not limited to forwarding DHCP requests to upstream DHCP servers; it can also function as a central DHCP server (DHCP relay server).
In order for a device to operate as a DHCP relay server to other networks, the relay agent IP address (GI address) is entered as the network name in the table of IP networks.
If the same network is being used by several relay agents (e.g. multiple access points are forwarding requests to a central DHCP server) then the GI address can also be abbreviated with a "*". If for example clients in the remote network 10.1.1.0/255.255.255.0 are to be assigned with addresses and several relay agents are available in this network, all of which use the device as upstream DHCP server, then the assignment of IP addresses and standard gateway to the clients can take place as follows:
