US 12,137,050 B2
Transfer device, communication system, transfer method, and transfer program
Koji Sugisono, Musashino (JP); and Shinya Kawano, Musashino (JP)
Assigned to Nippon Telegraph and Telephone Corporation, Tokyo (JP)
Appl. No. 17/631,658
Filed by Nippon Telegraph and Telephone Corporation, Tokyo (JP)
PCT Filed Aug. 2, 2019, PCT No. PCT/JP2019/030596
§ 371(c)(1), (2) Date Jan. 31, 2022,
PCT Pub. No. WO2021/024327, PCT Pub. Date Feb. 11, 2021.
Prior Publication US 2022/0278931 A1, Sep. 1, 2022
Int. Cl. H04L 45/76 (2022.01); H04L 45/745 (2022.01)
CPC H04L 45/76 (2022.05) [H04L 45/745 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A transfer device comprising one or more processors configured to perform operations comprising:
storing a management table having an entry including a transmission destination address, an output port, and a timer;
receiving a packet through a reception port, wherein the packet includes a transmission source address;
referring to the management table and retrieving an entry from the management table using the transmission source address of the packet as a key, wherein the retrieved entry includes a transmission destination address that matches the transmission source address of the received packet;
changing the output port of the retrieved entry to the reception port of the packet;
determining whether the timer of the retrieved entry is set;
in response to determining that the timer is not set, setting the timer of the entry;
in response to determining that the timer is set, keeping a content of the retrieved entry unchanged;
receiving a to-be-transferred packet; and
transferring the to-be-transferred packet from an output port of an entry, included in the management table, that corresponds to the to-be transferred packet.