Alaxala Networks Corporation

Norio Shiroko

Shinji Nozaki

Tetsu Okubo

Network relay apparatus includes: relay apparatus selector configured to, in response to reception of a join request for a preset multicast group from an external device connecting with the network, refer to information for identifying respective network relay apparatuses on a segment which the own network relay apparatus belongs to, and, at least one of information for identifying the preset multicast group and information for identifying a source, wherein the information for identifying the preset multicast group and the information for identifying a source are included in the received join request, and unequivocally select one network relay apparatus among at least part of the network relay apparatuses on the segment as a designated network relay apparatus according to a predetermined rule, wherein the designated network relay apparatus is assigned to relay a multicast packet to the external device; and a multicast route setter.

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Takamori, Japan

Norio Shiroko