JPS63285041A - Master/slave switching system - Google Patents
Master/slave switching systemInfo
- Publication number
- JPS63285041A JPS63285041A JP62120579A JP12057987A JPS63285041A JP S63285041 A JPS63285041 A JP S63285041A JP 62120579 A JP62120579 A JP 62120579A JP 12057987 A JP12057987 A JP 12057987A JP S63285041 A JPS63285041 A JP S63285041A
- Authority
- JP
- Japan
- Prior art keywords
- polling
- repeater
- terminal device
- station
- master
- 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
Links
- 238000012806 monitoring device Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 abstract description 25
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- Small-Scale Networks (AREA)
Abstract
Description
【発明の詳細な説明】
〔概 要〕
中Ｉｌ！器等のアラームモニタをＣＰＵ制御で切替えて
モニタ内容を記憶し、アクセスされた時にアラーム情報
が吸い上げられるようにしたもの。[Detailed Description of the Invention] [Summary] Middle Il! A device that switches the alarm monitor of a device, etc. under CPU control, stores the monitor contents, and retrieves the alarm information when accessed.
本発明は、中継器が挿入された伝送路の監視を行なうマ
スタ／スレーブ端末装置の切替方式に関する。The present invention relates to a master/slave terminal device switching system that monitors a transmission path in which a repeater is inserted.
中継器が挿入された伝送路の、光信号を用いた監視方式
としては例えば第３図がある。この図でＬ ＲＥ （１
ｉｎｅ ｒｅｐｅａｔｅｒ ｅｑｕｉｐｍｅｎｔ ）は
該中継器、Ｌ Ｔ Ｅ （１ｉｎｅ ｔｅｒｍｉｎａｌ
ｅｑｕｉｐｍｅｎｔ ）は該中継器のエラー監視を行
なう端末装置である。端末装置ＬＴＥにはマスタＭとス
レーブＳがあり、マスタ端末装置Ｍ−ＬＴＥは自己と中
継器ＬＲＨのエラー監視を行ない、スレーブ端末装置５
−ＬＴＥは自己のみのエラー監視を行なう。この第３図
は一次群ＰＣＭ伝送路の監視システムを示しており、中
継器ＬＲＥは図示しない該伝送路に挿入され、端末装置
ＬＴＥは子局に配設され、エラー情報を親局の監視装置
へ伝送する。An example of a monitoring method using optical signals for a transmission line in which a repeater is inserted is shown in FIG. 3. In this figure, L RE (1
ine repeater equipment) is the repeater, LTE (one terminal
equipment) is a terminal device that monitors errors in the repeater. The terminal device LTE has a master M and a slave S, and the master terminal device M-LTE performs error monitoring of itself and the repeater LRH, and the slave terminal device 5
- LTE performs self-only error monitoring. This FIG. 3 shows a monitoring system for a primary group PCM transmission line, in which a repeater LRE is inserted into the transmission line (not shown), a terminal device LTE is installed in a slave station, and error information is transmitted to a monitoring system of a master station. Transmit to.
マスタ端末装置Ｍ−ＬＴＥは監視線１１を通して中継器
ＬＲＥのエラー監視をするが、監視線１＋が例えば点Ｐ
で切断されると、その後の中継器のエラー監視はできな
くなる。この問題に対しては監視線をもう１本（Ｊ２）
増設して、監視線１１の障害時はβ２を使用してＭ−Ｌ
ＴＥはＬＲＥを監視するまたは５−ＬＴＥをＭ−ＬＴＥ
の如く動作させて５−ＬＴＥからａ２を使用してＬＲＥ
の監視を行なうことが考えられるが、この方式では監視
回路が２系統必要になり、コストパーフォーマンスの高
いシステムとは言い難い。The master terminal device M-LTE monitors errors in the repeater LRE through the monitoring line 11, but the monitoring line 1+ is connected to the point P, for example.
If the connection is disconnected, subsequent error monitoring of the repeater will no longer be possible. For this problem, add another monitoring line (J2)
When the monitoring line 11 fails, use β2 to connect M-L.
TE monitors LRE or 5-LTE to M-LTE
Run it like this and use a2 from 5-LTE to LRE
However, this method requires two systems of monitoring circuits and cannot be said to be a highly cost-effective system.
監視線が１系統では障害になったとき監視情報が得られ
ず、監視線を２系統にしたのでは、１系統障害でも監視
情報が得られる反面、設備費の増加は避けられない。そ
こで本発明は、ソフトウェア上で冗長性を持たせた設計
を行なうことでハードウェア規模の縮小を行ない、低コ
ストで高信頼性の監視回線を提供しようとするものであ
る。If there is only one line of monitoring line, no monitoring information can be obtained in the event of a failure, but if there are two lines of monitoring line, monitoring information can be obtained even if one line has a failure, but an increase in equipment costs is unavoidable. Therefore, the present invention aims to reduce the hardware scale by designing software with redundancy, and to provide a highly reliable monitoring line at low cost.
第１図に示すように本発明では中継器Ｒ（第３図のＬＲ
Ｅに相当する）の監視をマスタＭとスレーブＳの両方か
ら行なう。これらのＭ、Ｓは前記Ｍ−ＬＴＥ、５−ＬＴ
Ｅに相当し、−次群ＰＣＭ伝送路の各局（図ではＡ局と
Ｂ局とする）に置かれる。Ａ局は中ＩｌＩ器Ｒの各々と
Ｂ局に対してポーリングを行ない、各々の状態を収集す
る。またＢ局は中継器Ｒの各々とＡ局に対してポーリン
グし、各々の状態を収集する。これは交互に行なうよう
に各局のＬＴＥのソフトウェアを設計する。従って１サ
イクルは、Ａ局が中継器Ｒ１，Ｒ２，Ｒ３及びＢ局を順
次ポーリングし、次にＢ局が中継器Ｒ３，Ｒ２，Ｒ１及
びＡ局を順次ポーリングすることで構成され、このサイ
クルが繰り返される。As shown in FIG. 1, in the present invention, repeater R (LR in FIG.
(corresponding to E) is monitored from both master M and slave S. These M and S are the M-LTE, 5-LT
E, and is placed at each station (station A and station B in the figure) of the -th group PCM transmission path. Station A polls each of the medium IlI units R and station B, and collects the status of each. In addition, the B station polls each of the repeaters R and the A station, and collects the status of each. The LTE software of each station is designed to perform this alternately. Therefore, one cycle consists of the A station sequentially polling repeaters R1, R2, R3 and the B station, and then the B station sequentially polling the repeaters R3, R2, R1 and the A station. Repeated.
こうしてＡ、Ｂ局には各回のポーリング結果が集められ
、記憶される。In this way, each polling result is collected and stored in stations A and B.
上記Ａ、Ｂ局からのポーリングで、監視回線βが正常な
らＡ、Ｂ両局が持っているポーリング結果は同じである
。監視線ｌが例えば点Ｐで断線すると、Ａ局からのポー
リングでは中継器Ｒ１とＲ２に対してしかデータ収集で
きず、Ｂ局からのポーリングでは中継器Ｒ３に対してし
かデータ収集できず、両局の持つポーリング結果は異な
ることになる。In the polling from stations A and B, if the monitoring line β is normal, the polling results held by both stations A and B are the same. For example, if the monitoring line l is disconnected at point P, polling from station A can collect data only for repeaters R1 and R2, polling from station B can collect data only for repeater R3, and both Stations will have different polling results.
Ａ、 Ｂ両局が持つポーリング結果は上位の監視装置Ｓ
Ｓ Ｖ （ｓｌａｖｅ ５ｕｐｅｒｖｉｓａｒｙ）
を通して取寄せることができ、これらにより点Ｐで障害
が発生しても全中継器の状態を把握することができる。The polling results held by both stations A and B are sent to the upper monitoring device S.
SV (slave 5supervisary)
With these, even if a failure occurs at point P, the status of all repeaters can be known.
またこれらのポーリング結果から故障点の特定ができ、
直ちに障害復旧作業に入ることができる。In addition, the failure point can be identified from these polling results.
Disaster recovery work can begin immediately.
第２図に本発明の実施例を示す。中継器ＬＲＥ（詳しく
はそのジャック アンド アラームＪ／Ａ）は監視線β
のデータを一旦取込み、自己宛のものでなければそれを
次段へ送出するカスケード構成をとっている。この方式
では送出信号レベルはＯｄＢであるから各中継器で増幅
が行なわれたことになり、信号の減衰に格別配慮する必
要がない。図示しないがＪ／Ａ部の主要構成はプロセッ
サＣＰＵとＭ及びＳ側のＦＳＸインタフェース（モデム
）である。即ちこの監視回線はＦＳＫ方式％式％
ポーリングはマスタ端末装置Ｍ−ＬＴＥからＬＲＥＩ、
２．３および５−ＬＴＥに対して行ない、次にスレーブ
端末装置５−ＬＴＥがＬＲＥ３．２゜１及びＭ−ＬＴＥ
に対して行ない、以下これを繰り返す、この状態で例え
ば点Ｐで回線障害が発生すると、５−ＬＴＥはＭ −、
Ｌ Ｔ Ｅよりポーリングされなくなる。このときスレ
ーブ端末装置５−ＬＴＥはスレーブ監視装置５ＳＶ２を
介してマスタ監視装置ＭＳＶに割込みをかけ、ポーリン
グ結果の採取を要求する。そこでＭＳＶは５ＳＶＩ、５
ＳＶ２を介してマスタ端末装置Ｍ−ＬＴＥ及びスレーブ
端末装置５−ＬＴＥの各ポーリング結果を取寄せ、これ
らにより各ＬＲＥの状態を知りまた障害位置の特定を行
なう。FIG. 2 shows an embodiment of the present invention. The repeater LRE (more specifically, its jack and alarm J/A) is the monitoring line β
It has a cascade configuration in which it takes in the data once and sends it to the next stage if it is not addressed to itself. In this system, since the output signal level is OdB, each repeater performs amplification, and there is no need to take special consideration to signal attenuation. Although not shown, the main components of the J/A section are a processor CPU and FSX interfaces (modems) on the M and S sides. In other words, this monitoring line is based on the FSK method.The polling is carried out from the master terminal device M-LTE to the LREI,
2.3 and 5-LTE, and then slave terminal device 5-LTE performs LRE3.2゜1 and M-LTE.
For example, if a line failure occurs at point P in this state, 5-LTE will perform M-,
It will no longer be polled from LTE. At this time, the slave terminal device 5-LTE interrupts the master monitoring device MSV via the slave monitoring device 5SV2 and requests collection of polling results. Therefore, MSV is 5SVI, 5
The polling results of the master terminal device M-LTE and the slave terminal device 5-LTE are obtained via the SV2, and based on these, the status of each LRE is known and the location of the fault is specified.
中継器ＬＲＥは３６回線分の増幅器を有しており、中継
器の状態とはこれらの各回線の信号の有無、ビットエラ
ー率などである。The repeater LRE has amplifiers for 36 lines, and the status of the repeater includes the presence or absence of a signal on each of these lines, the bit error rate, etc.
監視装置ＳＳＶは常時は当該局（端局装置）の他の装ｆ
ｆ（交換機、多重化装置など）の監視を行なっており、
５−ＬＴＥからの上記割込みが入るときポーリング結果
の取寄せを行なう。従って本発明を実施してもハードウ
ェアはそれ程変更／増設されず、ソフトウェアの追加で
済む。The monitoring device SSV is always connected to other equipment of the station (terminal device).
f (switching equipment, multiplexing equipment, etc.)
When the above-mentioned interrupt from 5-LTE is received, the polling results are retrieved. Therefore, even if the present invention is implemented, the hardware will not be changed or expanded so much, and only software will be added.
回線障害のない状態ではマスタ、スレーブ両端末装置の
ポーリング結果は同じであり、従ってマスタ端末装置の
ポーリング結果で代表してこれを親局の監視装置へ送出
する。In a state where there is no line failure, the polling results of both the master and slave terminal devices are the same, so the polling results of the master terminal device are representative and sent to the monitoring device of the master station.
以上説明したように本発明によれば、ハードウェア的に
は１系統の監視回線で済み、唯、両端からポーリング監
視を行なうことで回線断でも各中継器の監視を行なうこ
とができ、監視の冗長性をコストアップなしに実現する
ことができる。As explained above, according to the present invention, only one monitoring line is required in terms of hardware, and by polling monitoring from both ends, each repeater can be monitored even if the line is disconnected. Redundancy can be achieved without increasing costs.
第１図は本発明方式の説明図、
第２図は本発明の詳細な説明図、
第３図は従来方式の説明図である。
第１図でＲは中継器、ｌは監視線、Ｍはマスタ、Ｓはス
レーブ、ＳＳｖはスレーブ監視装置である。FIG. 1 is an explanatory diagram of the method of the present invention, FIG. 2 is a detailed explanatory diagram of the present invention, and FIG. 3 is an explanatory diagram of the conventional method. In FIG. 1, R is a repeater, l is a monitoring line, M is a master, S is a slave, and SSv is a slave monitoring device.
Claims (1)
送路の一端の局（Ａ）にマスタ端末装置を、他端の局（
Ｂ）にスレーブ端末装置を置き、 マスタ端末装置より各中継器の状態をポーリングで順次
取込み、またスレーブ端末装置を該ポーリングで呼び出
し、次にスレーブ端末装置より各中継器の状態をポーリ
ングで順次取込み、これらを繰り返し、 マスタ端末装置より呼び出されないときスレーブ端末装
置は監視装置（ＳＳＶ）に割込みをかけ、マスタ、スレ
ーブ両端末装置のポーリング結果を取込ませることを特
徴とするマスタ／スレーブ切替方式。[Claims] A master terminal device is installed at a station (A) at one end of a transmission path in which a plurality of repeaters (R, R, . . .
Place a slave terminal device in B), and the master terminal device sequentially captures the status of each repeater by polling, calls the slave terminal device by polling, and then sequentially captures the status of each repeater from the slave terminal device by polling. , These are repeated, and when the slave terminal device is not called by the master terminal device, the slave terminal device interrupts the monitoring device (SSV) and causes the polling results of both the master and slave terminal devices to be fetched. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62120579A JPS63285041A (en) | 1987-05-18 | 1987-05-18 | Master/slave switching system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62120579A JPS63285041A (en) | 1987-05-18 | 1987-05-18 | Master/slave switching system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63285041A true JPS63285041A (en) | 1988-11-22 |
Family
ID=14789776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62120579A Pending JPS63285041A (en) | 1987-05-18 | 1987-05-18 | Master/slave switching system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63285041A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02250536A (en) * | 1989-03-24 | 1990-10-08 | Fujikura Ltd | Method for diagnosing trouble of on-vehicle network system |
| JP2009225284A (en) * | 2008-03-18 | 2009-10-01 | Fujitsu Ltd | Line-monitoring apparatus and line-monitoring method |
| JP2015198386A (en) * | 2014-04-02 | 2015-11-09 | Ｎｅｃフィールディング株式会社 | Fault detector, fault detection system, fault detection method and program |
-
1987
- 1987-05-18 JP JP62120579A patent/JPS63285041A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02250536A (en) * | 1989-03-24 | 1990-10-08 | Fujikura Ltd | Method for diagnosing trouble of on-vehicle network system |
| JP2009225284A (en) * | 2008-03-18 | 2009-10-01 | Fujitsu Ltd | Line-monitoring apparatus and line-monitoring method |
| JP2015198386A (en) * | 2014-04-02 | 2015-11-09 | Ｎｅｃフィールディング株式会社 | Fault detector, fault detection system, fault detection method and program |
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