CA2165014A1 - System for Detecting a Connection State Between Two Nodes in a Digital Communication Network - Google Patents

System for Detecting a Connection State Between Two Nodes in a Digital Communication Network

Info

Publication number
CA2165014A1
CA2165014A1 CA2165014A CA2165014A CA2165014A1 CA 2165014 A1 CA2165014 A1 CA 2165014A1 CA 2165014 A CA2165014 A CA 2165014A CA 2165014 A CA2165014 A CA 2165014A CA 2165014 A1 CA2165014 A1 CA 2165014A1
Authority
CA
Canada
Prior art keywords
nodes
communication network
connection state
ports
detecting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2165014A
Other languages
French (fr)
Other versions
CA2165014C (en
Inventor
Hiroyuki Kawakami
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
Hiroyuki Kawakami
Nec Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hiroyuki Kawakami, Nec Corporation filed Critical Hiroyuki Kawakami
Publication of CA2165014A1 publication Critical patent/CA2165014A1/en
Application granted granted Critical
Publication of CA2165014C publication Critical patent/CA2165014C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/14—Monitoring arrangements

Abstract

The object of the present invention is to provide a system wherein it can be retrieved whether or not two of a plurality of nodes (transmission devices) disposed in a complicated communication network, which includes control signal transmission paths and main signal transmission paths in a mixed condition, are physically connected to each other by a main signal transmission path so that settings to be performed by an operator can be performed precisely. According to the present invention, a system for detecting a connection state between two nodes in a digital communication network wherein a large number of nodes each having an intrinsic address set thereto and each having one or more ports are connected to each other by a plurality of transmission paths by which frame type digital signal is transmitted and each of the nodes relays a digital signal which arrives at one of the ports thereof to another one of the ports is characterized in that a specific bit of the frame type digital signal is allocated as a bit for connection state retrieval, and each of the nodes inhibits relaying of the specific bit.
CA002165014A 1994-12-13 1995-12-12 System for detecting a connection state between two nodes in a digital communication network Expired - Fee Related CA2165014C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP6309168A JP2827936B2 (en) 1994-12-13 1994-12-13 Digital communication network
JP309168/94 1994-12-13

Publications (2)

Publication Number Publication Date
CA2165014A1 true CA2165014A1 (en) 1996-06-14
CA2165014C CA2165014C (en) 2000-03-28

Family

ID=17989758

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002165014A Expired - Fee Related CA2165014C (en) 1994-12-13 1995-12-12 System for detecting a connection state between two nodes in a digital communication network

Country Status (5)

Country Link
US (1) US5841761A (en)
EP (1) EP0717530B1 (en)
JP (1) JP2827936B2 (en)
CA (1) CA2165014C (en)
DE (1) DE69526187T2 (en)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6221346A (en) * 1985-07-19 1987-01-29 Fujitsu Ltd Automatic recognition system of adjacent node address
US4763329A (en) * 1986-02-10 1988-08-09 Techlan, Inc. Modular data routing system
US4756019A (en) * 1986-08-27 1988-07-05 Edmund Szybicki Traffic routing and automatic network management system for telecommunication networks
JPH0752886B2 (en) * 1987-12-19 1995-06-05 富士通株式会社 How to configure a loop network
JP2865675B2 (en) * 1988-09-12 1999-03-08 株式会社日立製作所 Communication network control method
US4937815A (en) * 1988-11-21 1990-06-26 Systech Corporation Interrupt prioritization system and method for a demand shared bus
CA2002613C (en) * 1988-12-05 1996-02-27 Hisao Yamamoto Adaptive routing control method
DE3906334A1 (en) * 1989-02-28 1990-09-06 Standard Elektrik Lorenz Ag TRANSMISSION NETWORK WITH SWITCHABLE NETWORK NODE
JPH04152733A (en) * 1990-10-16 1992-05-26 Ricoh Co Ltd Network management equipment and network monitor equipment for indefinite communication network

Also Published As

Publication number Publication date
DE69526187T2 (en) 2002-08-22
DE69526187D1 (en) 2002-05-08
EP0717530B1 (en) 2002-04-03
JP2827936B2 (en) 1998-11-25
EP0717530A1 (en) 1996-06-19
US5841761A (en) 1998-11-24
JPH08167892A (en) 1996-06-25
CA2165014C (en) 2000-03-28

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