US 12,445,321 B2
Communication relay device, communication control method, and non-transitory computer readable storage medium
Hayato Doi, Hamamatsu (JP); Nobuhiko Uemura, Hamamatsu (JP); and Tsuyoshi Takazawa, Hamamatsu (JP)
Assigned to YAMAHA CORPORATION, Hamamatsu (JP)
Filed by YAMAHA CORPORATION, Hamamatsu (JP)
Filed on Nov. 16, 2022, as Appl. No. 17/988,098.
Claims priority of application No. 2021-201965 (JP), filed on Dec. 13, 2021.
Prior Publication US 2023/0188377 A1, Jun. 15, 2023
Int. Cl. H04L 12/28 (2006.01)
CPC H04L 12/28 (2013.01) 20 Claims
OG exemplary drawing
 
1. A communication relay device comprising:
a plurality of local area network (LAN) ports, each of the plurality of LAN ports being configured to connect to a communication terminal;
a control device including a first communication unit comprising an interface connected to the plurality of LAN ports by wiring and being configured to receive first information transmitted from the communication terminal via a first LAN port among the plurality of LAN ports to which the communication terminal is connected;
a processor; and
a memory configured to store a program, the program being executable by the processor to cause the processor to:
set a LAN interface among a plurality of LAN interfaces for each of the plurality of LAN ports;
respectively set a media access controller (MAC) address among a plurality of MAC addresses for each LAN interface of the plurality of LAN interfaces; and
control communication so that each LAN interface of the plurality of LAN interfaces functions as a virtual single switch associated with the MAC address respectively set for each LAN interface of the plurality of LAN interfaces.