JPS59188244A - System switching system - Google Patents

System switching system

Info

Publication number
JPS59188244A
JPS59188244A JP6214683A JP6214683A JPS59188244A JP S59188244 A JPS59188244 A JP S59188244A JP 6214683 A JP6214683 A JP 6214683A JP 6214683 A JP6214683 A JP 6214683A JP S59188244 A JPS59188244 A JP S59188244A
Authority
JP
Japan
Prior art keywords
signal transmission
switching
control unit
systems
line
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
JP6214683A
Other languages
Japanese (ja)
Inventor
Hiroshi Chikira
千喜良　博
Motoaki Yamazaki
元明 山崎
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP6214683A priority Critical patent/JPS59188244A/en
Publication of JPS59188244A publication Critical patent/JPS59188244A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/74—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

PURPOSE:To eliminate the need to identify an in-use and a stand-by systems of an opponent by putting duplicated signal transmitters both in operation, and switching and connecting both signal transmission lines to other systems when systems are changed. CONSTITUTION:If a fault occurs to a signal transmission line L0 through which a processing controller CP0 inputs a signal, the processing controller CP0 reads the other one of two pieces of information from a circuit control unit LCU0. There is no influence exerted upon a system B even if a fault occurs to one of signal transmission lines L0 and L1, and the operation is carried on as it is. When a fault occurs to an in-use system #0 and a system A is switched to a system #1, a system controller SC1 operates a circuit switching unit SEL1 to connect both signal transmission lines L0 and L1 to the circuit control unit LCU1 and the same operation that the system performs when the system #0 is in use.

Description

【発明の詳細な説明】 〔発明の利用分野〕 本発明は、２重化されたシステムの現用系・予備系の系
切替え方式に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a system for switching between an active system and a standby system in a duplex system.

〔発明の背景〕[Background of the invention]

一般に、通信設備等は、システムの信頼度を向上するた
め、２系統のハードウェア（装置）を設置したり、また
は伝送路を２重化しておくことにより、現用系の装Ｍま
たは伝送路に障害が生じたとき、障害が生じた装置寸た
は伝送路に代る予備の装置捷たは伝送路に切替えられる
。Generally speaking, in order to improve the reliability of the system, communication equipment, etc. is installed with two systems of hardware (equipment) or with duplex transmission lines, so that the current equipment or transmission line can be When a failure occurs, a backup device or transmission line is used to replace the failed equipment or transmission line.

すなわち、予備系は、現用系が正常に動作しているとき
け時期状態にあり、現用系に障害の発生したときに処理
装置などの指示によって動作状態（現用系）へ切替えら
れる。That is, the standby system is in the active state when the active system is operating normally, and is switched to the active state (active system) by an instruction from a processing device or the like when a failure occurs in the active system.

このように現用系と予備系とを切替えるように２重化さ
れたシステム相互間で情報の伝送を行なうため現用系・
予備系の信号伝送路を設けである場合について、従来の
系切替え方式の一例の方式構成図を第１図に示し、その
系切替え状態組合せ図を第２図に示す。In order to transmit information between the duplex systems by switching between the active and standby systems, the active and standby systems are
In the case where a backup signal transmission line is provided, a system configuration diagram of an example of a conventional system switching system is shown in FIG. 1, and a system switching state combination diagram is shown in FIG.

ここで、ＣＰｏ、ＣＰ＋は、それぞれシステムＡ。Here, CPo and CP+ are each system A.

Ｂを制御する処理制御装置、ＬＣｏ、　ＬＣ＋は、信号
伝送路Ｌｏ　、　Ｌ＋を制御する回線制御ユニット、Ｍ
ＯＤｏ　、　ＩＪｉＯｒＪ＋　ｕ、モデム、ＳＥＬは、
回線切替ユニット、ＳＣｏ、ＳＣ，＋は、信号伝送路系
切替等のシステムの系切替制御をするシステム制御装置
である。The processing control device LCo and LC+ that control the signal transmission lines Lo and L+ are the line control unit M that controls the signal transmission lines Lo and L+.
ODo, IJiOrJ+u, modem, SEL,
The line switching units SCo, SC, + are system control devices that perform system switching control of the system such as signal transmission path system switching.

システムＡ、システムＢは、それぞれ２重化されており
、それらの相互間で情報の伝送を行なうために、２重化
された信号伝送路Ｌｏ　、　Ｌ＋によって接続されてい
る。System A and system B are each duplicated, and are connected by duplicated signal transmission paths Lo and L+ in order to transmit information between them.

いま、システムＡ、システムＢともに、＃ｏ系が現用系
として動作しているものとすると、システムＡ、システ
ムＢの各処理制御装置ｃＰｏが制御動作を行なっている
。そして、システムＡまたはシステムＢが相互に情報の
転送、受信が必要になると、それぞれの処理制御装置Ｃ
Ｐｏの指令を各回線制御ユニツ）　ＬＣｏに与える。Assuming that system #o is currently operating as the active system in both system A and system B, each processing control device cPo of system A and system B is performing control operations. When system A or system B needs to mutually transfer or receive information, each processing control device C
Give commands from Po to each line control unit (LCo).

処理制御装置ＣＰｏから指令を受けた回線制御ユニツ）
ＬＣｏは、処理制御装置ｃＰｏから指令された並列デー
タの情報を、モデムＭＯＤｏを介して信号伝送路ＬＯ経
由で伝送するように、直列データの情報に変換する。そ
して、回線切替ユニット５ＥＬｔ−通して、モデムＭＯ
ＤＯと相手システムのモデムＭ　ＯＤ　ｏとの間で情報
転送が行なわれ、相手システムのモデムＭＯＤｏから信
号の受信をしたモデムＭ−ＯＤｏは、制御ユニン）　Ｌ
ＣｏＫ受信データを転送する。Line control unit that receives commands from processing control unit CPo)
LCo converts the parallel data information commanded by the processing control device cPo into serial data information so as to transmit it via the modem MODo and the signal transmission line LO. Then, through the line switching unit 5ELt-, the modem MO
Information is transferred between the DO and the modem MODo of the partner system, and the modem M-ODo that has received the signal from the modem MODO of the partner system is the control unit) L
Transfer CoK received data.

モデムＭＯＤｏから受信情報の転送を受けた制御ユニツ
）Ｉ、ＣＯけ、直列データの情報を並列データの情報に
変換して各システムの処理制御装置ＣＰｏに当該情報を
転送する。The control units I and CO that received the received information from the modem MODo convert the serial data information into parallel data information and transfer the information to the processing control unit CPo of each system.

ここで、現用系が各シスデノ・の＃１系の場合であって
も＃Ｄ系で説明した動作と同様である。Here, even if the active system is the #1 system of each system denomination, the operation is the same as that described for the #D system.

次に、回線切替えユニツ）ＳＥＬは、信号伝送路Ｌｏ、
Ｌ＋の現用　予備方式（アクト　スタンバイ方式）を実
現するもので、システムＡおよびシステムＢの制御系に
現用系（ＡＣＴ）と予備系（ＳＢＹ）とがあり、予備系
（は時期しているのと同様に信号伝送路Ｔ、、ｏ　、　
Ｌ＋のいずれかも予備系として時期状態しておく。Next, the line switching unit) SEL connects the signal transmission line Lo,
This realizes the active standby system (act standby system) of L+, and the control systems of system A and system B have an active system (ACT) and a standby system (SBY). Similarly, the signal transmission path T, ,o,
Either one of L+ is kept in a temporary state as a standby system.

この構成方式は、システムＡおよびシステムＢの立上げ
時における初期状態を考えると、第２図に示す多くの初
期状態の組合せが考えられる。システムＡ、システムＢ
の＃０系が共に現用系（ＡＣＴ　）となるときも、第２
図の項番１゜瓜番２の２つの状態が存在する。In this configuration method, considering the initial states at the time of startup of system A and system B, many combinations of initial states shown in FIG. 2 can be considered. System A, System B
Even when both #0 systems become active systems (ACT), the second
There are two states, numbered 1 and number 2 in the diagram.

各システムＡ、Ｂが初期状態を設定するときシステムＡ
、システムＢの処理制御装置ＣＰｏがシステム制御装置
ＳＣｏ　＋　Ｓ　Ｃ＋と回線切替ユニットＳ　Ｅ　Ｌと
の連携動作により、画システムＡ。When each system A and B sets the initial state, system A
, the processing control device CPo of the system B performs the processing in the image system A through the cooperative operation of the system control device SCo+SC+ and the line switching unit SEL.

Ｂの現用系相互を接続しうる状態を捜し出さなければな
らない。It is necessary to find a state in which the active systems of B can be connected to each other.

例えば、笑２図の項番１の状態で動作に入りたまたま信
号伝送路Ｌｏで障害が発生すると、項番２の状態の接続
にするために、システムＡおよびシステムＢ両方の回線
切替えユニットＳＥＬを共に切替えなければならなかっ
た。For example, if operation starts in the state shown in item number 1 in Figure 2, and a failure happens to occur in the signal transmission line Lo, the line switching unit SEL of both system A and system B should be switched to the connection state shown in item number 2. I had to switch both.

このように、従来の系切替え方式は、システムの初期状
態の設定時に複雑なソフトウェア制御による動作が要求
されるとともに、イｇ号伝送路Ｌｏ、、Ｌ＋に障害が発
生すると、両システムでＡ。As described above, the conventional system switching method requires operation by complicated software control when setting the initial state of the system, and when a failure occurs in the Ig transmission lines Lo, L+, A occurs in both systems.

Ｂともに回線切替を行わなければならず、煩雑であった
。Both lines had to be switched, which was complicated.

〔発明の目的〕[Purpose of the invention]

本発明の目的は、上記した従来技術の欠点をなくし、２
重化されたシステムが、信号伝送路によって相互に接続
されている場合、相手の系切替えの影響を受けることな
く動作を行うことができる系切替え方式を提供すること
にある。The purpose of the present invention is to eliminate the above-mentioned drawbacks of the prior art, and to
An object of the present invention is to provide a system switching method that allows operations to be performed without being affected by system switching of the other party when duplicated systems are interconnected by signal transmission paths.

〔発明の概要〕[Summary of the invention]

２重化された信号伝送路によって相互に接続される、２
重化された各システムにおいて、２重化された信号伝送
路それぞれを共に動作状態にしておき、それらを共に現
用系として接続し相手システムに関して上記両信号伝送
路を通して情報の送受を行うとともに、システムの系切
替を行うときは、上記両信号伝送路を共に他系へ切替え
接続をするように制御するようにしたものである。2 connected to each other by a duplicated signal transmission path
In each duplicated system, both duplicated signal transmission lines are kept in operation, and they are connected together as a working system to send and receive information regarding the other system through both signal transmission lines, and the system When system switching is performed, both of the signal transmission lines are controlled to be switched and connected to the other system.

このようにすることにより、各システムは、相手システ
ムの現用系・予備系の識別を不要とし、そのソフトウェ
ア制御を簡略化しうるようにするものである。By doing so, each system does not need to identify whether the partner system is an active system or a standby system, and its software control can be simplified.

なお、信号伝送送路に障害が発生したときはその検出を
したシステム側で、いずれの信号伝送路を用いて情報の
送受をするかを独自に決定しうるようにもするものであ
る。Furthermore, when a failure occurs in a signal transmission path, the system that detects the failure can independently determine which signal transmission path should be used to send and receive information.

〔発明の実施例〕[Embodiments of the invention]

以下、本発明の実施例を図に基づいて説明する０ 第３図は、本発明に係る系切替え方式の一実施例の方式
構成図である。Embodiments of the present invention will be described below with reference to the drawings. FIG. 3 is a system configuration diagram of an embodiment of the system switching system according to the present invention.

ここで、５ＥＬｏ　、ＳＥＬ】は、それぞれ、２重化さ
れた各信号伝送路Ｌｏ　、　ＬｌおよびモデムＭＯＤ。Here, 5ELo, SEL] are the duplicated signal transmission lines Lo, Ll and modem MOD, respectively.

ＭＯＤｌに対応し、システム制御装置ＳＣｏ、ＳＣ＋に
より、それらを各単独に＃０系、＃１系いずれがへの接
続に切替えるための回線切替ユニット、ＬＣＵｏ　、Ｌ
ＣＵｌは、それぞれ、信号伝送路ＬＯＩＬｌを制御する
回線制御ユニットで、対向する相手システムと接続され
る信号伝送路の回線数（第３図の場合ＬＯ、Ｌｌの２回
線）に対応した個別の端子を持ち、その各個別の全端子
は並列に同時に動作するもの、その他の符号は、第１図
における同一符号のものと均等のものである。A line switching unit, LCUo, L that corresponds to MODl and allows the system control devices SCo and SC+ to switch the connection to either the #0 system or the #1 system individually.
Each CUl is a line control unit that controls the signal transmission line LOILl, and has individual terminals corresponding to the number of lines of the signal transmission line (in the case of Fig. 3, two lines, LO and Ll) connected to the opposing partner system. , all of its individual terminals operate simultaneously in parallel, and other symbols are equivalent to those with the same symbols in FIG.

まず、回線切替ユニットＳ　Ｅ　Ｌｏ　ｌ　Ｓ　Ｅ　Ｌ
ｌは、システムの制御系が現用系か否かの情報をシステ
ム制御装置ＳＣｏまたはＳＣ＋がら受け、対向するシス
テムと接続される信号伝送路Ｌｏ　＋　Ｌｌを共に現用
系の回線制御ユニットにＬ　ＣＵｏ　（ｔたはＬＣＵｌ
）に引込む。First, the line switching unit S E Lo l S E L
l receives information as to whether the control system of the system is the active system from the system control unit SCo or SC+, and transmits both the signal transmission line Lo + Ll connected to the opposing system to the active system line control unit L CUo ( t or LCUl
).

このようにして、システム制御装置ＳＣｏ、ＳＣ１は、
システムの現用系を他の回線切替ユニット５ＥＬｏ　、
ＳＥＬ＋にも知らせ、対向システムと接続されている全
信号伝送路を現用系の回線制御ユニットに引込ませる。In this way, the system controllers SCo, SC1
The active system of the system is connected to another line switching unit 5ELo,
It also informs SEL+ and causes all signal transmission lines connected to the opposing system to be routed to the active line control unit.

処理制御装置ＣＰｏ　＋　ＣＰ　１は、システム全体を
制御するものであって、例えば、システムＡの立上げ初
期状態の設定は、信号伝送路ＬＯ＋　Ｌｌの状態を考え
ることなく、システムＡの処理制御装置ＣＰ。またはＣ
Ｐ＋が制御する＃０系または＃１系いずれを現用系にし
てもよい。すなわち、処理制御装置ＣＰｏが現用系とな
ると、＃ｏ系に接続されているシステム制御装置ＳＣｏ
は、回線切替ユニット５ＥＬｏに収容されている全信号
伝送路り。The processing control device CPo + CP 1 controls the entire system, and for example, the initial startup state of system A can be set by the processing control device of system A without considering the state of the signal transmission path LO + Ll. C.P. or C
Either system #0 or system #1 controlled by P+ may be used as the active system. That is, when the processing control device CPo becomes the active system, the system control device SCo connected to the #o system
is all the signal transmission paths accommodated in the line switching unit 5ELo.

をシステムの現用系である＃０系に接続されている回線
制御ユニン）ＬＣＵｏに引込捷せる。信号伝送路Ｌ＋に
ついても同様である。is routed to the line control unit (LCUo) connected to system #0, which is the active system of the system. The same applies to the signal transmission line L+.

処理制御装［ＣＰｏが対向するシステムＢに情報の転送
を行なう場合には、処理制御装置ＣＰ。Processing control device [When CPo transfers information to the opposing system B, processing control device CP.

から回線制御ユニツ）ＬＣＵｏに指示を与える。(from the line control unit) to the LCUo.

処理制御装置ＣＰｏから指示を受けた回線制御ユニツ）
ＬＣＵｏは、指示された並列データの情報を直列データ
の情報に変換し、対向して接続されるシステムＢに接続
する信号伝送路Ｌｏ、Ｌ＋のモデムＭＯＤｏおよびＭＯ
Ｄ＋ｆｉ−動作状態にする。line control unit that received instructions from the processing control unit CPo)
The LCUo converts the instructed parallel data information into serial data information, and transmits the signal transmission lines Lo and L+ modems MODo and MO connected to the system B connected oppositely.
D+fi- put into operation state.

システムＢ側も、システムＡ側に情報の転送を行なうと
きは、全信号伝送路を動作状態にしている。When the system B side also transfers information to the system A side, all signal transmission paths are kept in operation.

一方、相手システムから転送される情報を受信するとき
、例えばシステムＡがシステムＢ　カら転送される情報
を受信ときけ、信号伝送路Ｌｏ＋Ｌ＋に接続されている
モデムＭＯＤｏおよヒＭＯＤ１の両方から回線切替ユニ
ット５ＥＬＯ、ＳＥＬ＋を経て回線制御ユニツ）ＬＣＵ
ｏに当該信号が到来する。On the other hand, when receiving information transferred from the other system, for example, when system A receives information transferred from system B, both modems MODo and MOD1 connected to signal transmission path Lo+L+ Line control unit (LCU) via switching unit 5ELO and SEL+
The signal arrives at o.

処理制御装置ＣＰｏは、この２つの信号を回線制御ユニ
ツ）　ＬＣＵＯで直列データの情報から並列データの情
報に変拗し、いずれが一方を読み取る。The processing control unit CPo converts these two signals into the line control unit (LCUO) from serial data information to parallel data information, and which one reads the other.

ここで、処理制御装置ＣＰｏが読み込んでいた信号伝送
路Ｌｏ　（またはＬりに障害が生ずると、処理制御装置
ＣＰｏＩは、回線制御ユニノ）ＬＣＵ。Here, the signal transmission line Lo that the processing control unit CPo was reading (or if a failure occurs on the signal transmission line Lo, the processing control unit CPoI reads the line control unit) LCU.

からの２つの情報の他の一方を読む。／ステムＢ側では
、信号伝送路　Ｌｏ、Ｌｌの１つに障害が発生しても何
の影響も寿ぐその捷まの状態で動作を継続する。Read the other of the two pieces of information. / On the stem B side, even if a failure occurs in one of the signal transmission paths Lo and Ll, the system continues to operate in that suspended state without any effect.

システム八で現用＃０系に障害が発生して＃１系に切替
えられると、そのときはシステム制御装置ＳＣ＋が回線
切替ユニッ）　Ｓ　Ｅ　−、Ｌ−１を動作させて信号伝
送路Ｌｏ　、　Ｌｌを共に回線制御ユニッ）　ＬＣＵ＋
に引き込み、＃０系が現用のときと同様な動作を行なう
。When a failure occurs in the active #0 system in system 8 and the switch is made to the #1 system, the system control unit SC+ operates the line switching unit SE-, L-1 to switch the signal transmission lines Lo and Ll. together with the line control unit) LCU+
The #0 system performs the same operation as when it is currently in use.

上記の説明は、システムＡの＃ｏ系を例にして説明した
が、システムＢの＃０系、＃１系でも同様である。The above explanation has been made using the #o system of system A as an example, but the same applies to the #0 system and #1 system of system B.

〔発明の効果〕〔Effect of the invention〕

以上、詳細に説明したように、本発明によれば、信号伝
送路を介して相互間が接続されるシステムの数が多くて
も、その系切替えについて他のシステムの影響を受ける
ことなく、初期状態の設定および現用系の切替えはもと
より信号伝送路の障害発生に対しても即応することがで
き、情報処理・伝送網等の信頼性、サービス性の向上に
顕著な効果が得られる。As described in detail above, according to the present invention, even if there are a large number of systems connected to each other via signal transmission paths, system switching can be performed without being affected by other systems, and at an initial stage. In addition to setting the status and switching the active system, it is possible to respond immediately to the occurrence of a failure in the signal transmission path, and a remarkable effect can be obtained in improving the reliability and serviceability of information processing and transmission networks.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、従来の系切替え方式の一例の方式構成図、第
２図は、その系切替え状態組合せ図第６図は、本発明に
係る系切替方式の一実施例の方式構成図である。 ＣＰｏ、ＣＰｌ・・処理制御装Ｗ　　ＬＣＵｏ　、　Ｌ
ＣＴＪ＋・・回線制御ユニツ）　　ＭＯＤｏ　、　ＭＯ
Ｊ）＋・・モデム　１、Ｏ、Ｌ＋　−信号伝送路　５Ｅ
Ｌｏ　、ＳＥＬ＋　・回線切替ユニツ）　　ＳＣｏ、Ｓ
Ｃ＋・・システム制御装置FIG. 1 is a system configuration diagram of an example of a conventional system switching method, and FIG. 2 is a system switching state combination diagram thereof. FIG. 6 is a system configuration diagram of an example of a system switching system according to the present invention. . CPo, CPl...Processing control unit W LCUo, L
CTJ+...Line control unit) MODo, MO
J)+...Modem 1, O, L+ -Signal transmission line 5E
Lo, SEL+・Line switching unit) SCo, S
C+...System control device

Claims (1)

【特許請求の範囲】[Claims] １２重化された信号伝送路によって相互に接続される、
２重化された各システムにおいて、２重化された信号伝
送路それぞれを共に動作状態としておき、それらを共に
現用系として接続し、相手システムに関して上記両信号
伝送路を通して情報の送受を行うとともに、システムの
系切替えを行うときは、上記両信号伝送路を共に他系へ
切替え接続をするように制御することを特徴とする系切
替え方式。interconnected by a 12-duplex signal transmission path,
In each of the duplicated systems, both of the duplicated signal transmission lines are kept in an operating state, and they are connected together as a working system, and information is sent and received from the other system through both signal transmission lines, and A system switching method characterized in that, when switching a system, both of the signal transmission lines are controlled to be switched and connected to another system.
JP6214683A 1983-04-11 1983-04-11 System switching system Pending JPS59188244A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6214683A JPS59188244A (en) 1983-04-11 1983-04-11 System switching system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6214683A JPS59188244A (en) 1983-04-11 1983-04-11 System switching system

Publications (1)

Publication Number Publication Date
JPS59188244A true JPS59188244A (en) 1984-10-25

Family

ID=13191661

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6214683A Pending JPS59188244A (en) 1983-04-11 1983-04-11 System switching system

Country Status (1)

Country Link
JP (1) JPS59188244A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005273389A (en) * 2004-03-26 2005-10-06 Toli Corp Member for wall surface construction, and construction method of wall surface

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005273389A (en) * 2004-03-26 2005-10-06 Toli Corp Member for wall surface construction, and construction method of wall surface

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