A member device of a stacked switches system receives a packet which is to be sent to every member device in the stack groups of the stacked switches system. The member device identifies an intra-group port and an aggregated stack link group which permit forwarding the packet based on an ingress member device identification of the packet. The member device sends the packet carrying the ingress member device identification via the identified intra-group stack port, via the identified aggregated stack link group and via a local data port.