Title:
中継装置及び通信システム
Document Type and Number:
Japanese Patent JP7304801
Kind Code:
B2
Abstract:
A relay device includes a plurality of physical ports (111-1 to 111-N) that receive frames, and a layer-2 protocol processing unit (113) that transfers the frame received by one of the physical ports (111-1 to 111-N) from at least one of the physical ports (111-1 to 111-N). The layer-2 protocol processing unit (113) has a filtering function for blocking frames other than a clock-time synchronization frame during transfer involving a port selected from the plurality of physical ports (111-1 to 111-N) as a port that relays only the clock-time synchronization frame used for synchronizing clock time.
Inventors:
Toshiyuki Nakayasu
Sachiko Taniguchi
Ryusuke Kawate
Sachiko Taniguchi
Ryusuke Kawate
Application Number:
JP2019224503A
Publication Date:
July 07, 2023
Filing Date:
December 12, 2019
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
H04L7/00; H04L12/28
Domestic Patent References:
| JP2008172587A | ||||
| JP2018121123A | ||||
| JP2017216563A | ||||
| JP2014183386A |
Foreign References:
| WO2019220632A1 |
Attorney, Agent or Firm:
Yoichi Yamagata
Masaru Sato
Masahiko Shinohara
Minoru Maeda
Masaru Sato
Masahiko Shinohara
Minoru Maeda