i have a simple topology like following
Router A directly connected to Switch L3 in vlan 10, and i have 2 end user that one connected to vlan 10 and the others to vlan 20. in this case router 3 only work as end user and DHCP server, and all routing task running by the Switch L3. there is no trunk link between Router A and Switch L3
and i wondering could the end user that connected to vlan 20 retrieve the IP address from the router A (DHCP Server)??, because on my lab that is not possible, i always get failed,
note : i dont want to make any subinterface on the Router A
is that possible??