Network connection device, switching circuit device, and method for learning address

Abstract

A network connection device includes a processor and a switch unit. The processor learns an address. The switch unit outputs a packet received from a first port out of a plurality of ports to a second port. The switch unit manages a table including an entry which includes an address, status data, and an identifier of a port. The switch unit generates a first entry including a first address included in a first packet received via a first port, status data indicating 'learning', and an identifier of the first port, in the absence of the first address in the table, and requests the processor to learn the first address. The switch unit withholds requesting the processor to learn a second address included in a second packet received via the first port, when the second address is included in a second entry along with status data indicating 'learning'.