JPS647835A - Local area network system - Google Patents

Local area network system

Info

Publication number
JPS647835A
JPS647835A JP62163137A JP16313787A JPS647835A JP S647835 A JPS647835 A JP S647835A JP 62163137 A JP62163137 A JP 62163137A JP 16313787 A JP16313787 A JP 16313787A JP S647835 A JPS647835 A JP S647835A
Authority
JP
Japan
Prior art keywords
communication
address
control part
test packet
network
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.)
Pending
Application number
JP62163137A
Other languages
Japanese (ja)
Inventor
Noriaki Nagatomo
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP62163137A priority Critical patent/JPS647835A/en
Publication of JPS647835A publication Critical patent/JPS647835A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To efficiently execute communication by connecting two sets of communication controllers to a network per one communication node, so that even when one of them becomes faulty and has been switched to the other communication controller, an address of its communication node is not varied. CONSTITUTION:The titled system is provided with a communication data input/ output control part 1 for transmitting a test packet which has been constituted so that a transmission origin address and a transmission destination address both show the own station address, to a network prior to transmission and reception of the packet as a rule. Communication controllers Nn, Nn' provided with processing parts Mn, Mn' for executing waiting processing when said control part has received the test packet, and executing stationary processing immediately when the test packet has not been received, and a data input/output control part 4 for connecting an external data processor are connected to a network by two sets per one communication node. In such a way, even if one communication controller becomes faulty and is switched to the other communication controller, an address of the communication node is not changed, and communication can be efficiently executed.
JP62163137A 1987-06-30 1987-06-30 Local area network system Pending JPS647835A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62163137A JPS647835A (en) 1987-06-30 1987-06-30 Local area network system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62163137A JPS647835A (en) 1987-06-30 1987-06-30 Local area network system

Publications (1)

Publication Number Publication Date
JPS647835A true JPS647835A (en) 1989-01-11

Family

ID=15767906

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62163137A Pending JPS647835A (en) 1987-06-30 1987-06-30 Local area network system

Country Status (1)

Country Link
JP (1) JPS647835A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4820607A (en) * 1985-08-19 1989-04-11 Fuji Photo Film Co., Ltd. Photosolubilizable composition
WO2008114365A1 (en) * 2007-03-16 2008-09-25 Fujitsu Limited Ring node device and ring node device control method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4820607A (en) * 1985-08-19 1989-04-11 Fuji Photo Film Co., Ltd. Photosolubilizable composition
WO2008114365A1 (en) * 2007-03-16 2008-09-25 Fujitsu Limited Ring node device and ring node device control method

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