Via Technologies, Inc.

Weipin Chen

Perlman Hu

Chin-Chang Li

A data packet transmission method for use in a network switch is disclosed. The network switch includes a plurality of connection ports for tranceiving a data packet therefrom, a tag substitution rule table defining a tag substitution rule, a VLAN reference table defining the correlation of a tagging rule with a VLAN information of the data packet, a multicast reference table defining the relationship of a multicast port mask with a multicasting information of the data packet, and a tag determination device. The tag determination device transmits the data packet to destination ports according to the multicast port mask, determines the VLAN tag(s) to be affixed to the data packet for the destination ports according to the tag substitution rule, and optionally removes the VLAN tag for the destination ports according to the tagging rule.

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Taipei, Taiwan

Weipin Chen