JPS62150952A - Duplicated node equipment - Google Patents
Duplicated node equipmentInfo
- Publication number
- JPS62150952A JPS62150952A JP29165785A JP29165785A JPS62150952A JP S62150952 A JPS62150952 A JP S62150952A JP 29165785 A JP29165785 A JP 29165785A JP 29165785 A JP29165785 A JP 29165785A JP S62150952 A JPS62150952 A JP S62150952A
- Authority
- JP
- Japan
- Prior art keywords
- optical
- equipment
- node
- loop
- branching device
- 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
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は光ファイバを利用したループ式ネツ１−ワーク
で信頼性向上等の目的で使用する２重化ノード装置に関
する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a duplex node device used for the purpose of improving reliability in a loop type network using optical fibers.
従来の技術
第２図は従来の２重化ノード装置の構成例を示す図で、
１は各ノード装置をループ状に接続して２ページ
いる光ファイバ伝送路、２は光受信機、３は光送信機、
４は伝送制御装置、５は切換制御部、６は切換部、７は
端末であり、光受信機２、光送信機３、伝送制御装置４
でノード装置３Ａ、、８’、Ｂを構成する。BACKGROUND ART FIG. 2 is a diagram showing an example of the configuration of a conventional duplex node device.
1 is an optical fiber transmission line connecting each node device in a loop and has two pages; 2 is an optical receiver; 3 is an optical transmitter;
4 is a transmission control device, 5 is a switching control section, 6 is a switching section, and 7 is a terminal, which includes an optical receiver 2, an optical transmitter 3, and a transmission control device 4.
These constitute the node devices 3A, 8', and B.
上記構成では２＠のノード装置３Ａさ＋３１３が直列接
続されており、切換制御部５により２Ｉｌ？ｉｉのノー
ド装置８Ａ、８Ｂを常時監視しており、異常時には、切
換部６を介して正常な力のノート装置８に切換える。In the above configuration, 2@ node devices 3A and 313 are connected in series, and the switching control unit 5 controls whether 2Il? The node devices 8A and 8B of ii are constantly monitored, and in the event of an abnormality, they are switched to the notebook device 8 with normal power via the switching unit 6.
このように上記従来の２重化ノード装置でも、予備側の
光受信機２と光送信機３の組を単なるリピータとしてい
わゆるバイパスモードによす使用すれば、伝送制御装置
４を２重化することができる。In this way, even in the conventional duplex node device described above, if the pair of optical receiver 2 and optical transmitter 3 on the standby side is used as a simple repeater in a so-called bypass mode, the transmission control device 4 can be duplicated. be able to.
発明が解決しようとする問題点
しかしながら、上記従来の２重化方法では、伝送制御装
置４の部分は並列２重化出来るが、光受信機２と光送信
機３の部分はループ上で直列に接続され、信頼度的にも
直列となり、ノート゛装置８３ページ
全体としては完全並列２重化されていないという問題が
あった。Problems to be Solved by the Invention However, in the conventional duplication method described above, the transmission control device 4 can be duplicated in parallel, but the optical receiver 2 and optical transmitter 3 can be duplicated in series on a loop. There was a problem in that the devices were connected in series in terms of reliability, and the notebook device as a whole was not completely parallel and redundant.
本発明はこのような従来の問題を解決するものであり、
信頼度の高い２重化ノード装置を提供することを目的と
するものである。The present invention solves these conventional problems,
The purpose is to provide a highly reliable duplex node device.
問題点を解決するための手段
本発明は上記目的を達成するために、光分岐器と光合成
器を挿入して２台のノード装置が完全に２重化出来るよ
うに構成したものである。Means for Solving the Problems In order to achieve the above object, the present invention is constructed so that two node devices can be completely duplicated by inserting an optical splitter and an optical combiner.
作 用
本発明は上記のように構成することにより次のような作
用を有する。すなわち、光ファイバにより上流のノード
装置より送られてきた光信号は光分岐器により２つにわ
けられ、２重化されたそれぞれのノード装置に入力され
る。また２つのノードからの出力信号は光合成器により
合成され、光ファイバに出力されるが予備側のノード装
置の光出力を止めておくこと？こより１つの信号とする
ため、完全並列な２重化を実現出来、高信頼化の効果が
得られる。Effects The present invention has the following effects by being configured as described above. That is, an optical signal sent from an upstream node device through an optical fiber is split into two by an optical splitter and input to each of the duplicated node devices. Also, the output signals from the two nodes are combined by the optical combiner and output to the optical fiber, but is it necessary to stop the optical output of the node device on the standby side? Since this makes a single signal, complete parallel duplication can be realized and the effect of high reliability can be obtained.
実施例
】′１図は本発明の一実施例の構成を示し、９は光分岐
器、１０は光合成器であり、他の第２図と同様の符号は
同一の名称を表わすものとする。同図で、ループ状の光
ファイバ伝送路１から入力した光信号は光分岐器９ζこ
より２つに分けられ、片方はノード装置の８Ａの光受信
器２へ他方はノード装置８Ｂの光受信機２に入力され、
それぞれ電気信号に変換され、それぞれの伝送制御装置
１１４へと渡される。切換制御部５は両ノード装置の８
Ａ、８１３の状態を監視しており、片方を現用、もう一
方を予備とするように制御し、同時に端末等の接続が現
用側にされるよう切換部６を制御する。また切換制御部
５は光送信機２及び光送信機３１こ対しても予備系とな
っている側は光出力を止めるように制御する。２個の光
送信機３から出力された信号は光合成器１９により一つ
の信号とされ、光ファイバ伝送路ｌに出力される。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the configuration of an embodiment of the present invention, in which 9 is an optical branching device, 10 is an optical combiner, and the same reference numerals as in FIG. 2 represent the same names. In the figure, an optical signal input from a loop-shaped optical fiber transmission line 1 is divided into two by an optical splitter 9ζ, one of which is sent to the optical receiver 2 of the node device 8A, and the other is sent to the optical receiver of the node device 8B. 2 is entered,
Each is converted into an electrical signal and passed to each transmission control device 114. The switching control unit 5 is connected to the 8 of both node devices.
It monitors the status of A and 813, controls one side to be in active use and the other in reserve, and at the same time controls the switching unit 6 to connect terminals, etc. to the active side. The switching control section 5 also controls the optical transmitter 2 and the optical transmitter 31 so that the side that is a standby system stops optical output. The signals output from the two optical transmitters 3 are combined into one signal by the optical combiner 19, and output to the optical fiber transmission line l.
この時予備系の光出力は止められているので、次のノー
ド装置へは現用系の光信号のみが送られる５ページ
も光ファイバ伝送路１に対し並列構成となっているため
、光送受信部が障害を越してももう一方の予備系に切換
ることによりループを正常に運用できるという効果を有
する。At this time, the optical output of the standby system is stopped, so only the optical signal of the active system is sent to the next node equipment.The 5th page is also configured in parallel to the optical fiber transmission line 1, so the optical transceiver section This has the effect that even if a failure occurs, the loop can be operated normally by switching to the other standby system.
刃・１図は本発明の一実施例における２重化ノード装置
の構成を示すブロック図、第２図は従来の２重化ノード
装置のブロック図である。
１・・・光ループ伝送路、２・・・光受信機、３・・・
光送信機、４・・・伝送制御装置、５・・・切換制御部
、６・・・切換部、７・・端末、８・・・ノード装置、
９・・・光分岐器、１０・・光合成器。FIG. 1 is a block diagram showing the configuration of a duplex node device according to an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional duplex node device. 1... Optical loop transmission line, 2... Optical receiver, 3...
Optical transmitter, 4... Transmission control device, 5... Switching control unit, 6... Switching unit, 7... Terminal, 8... Node device,
9...Light splitter, 10...Photosynthesizer.
Claims (1)
し、それぞれ２個のノード装置に入力し、前記２個のノ
ード装置それぞれの出力を光合成器で合成して光ファイ
バ伝送路に送出すると共に、前記２個のノード装置を共
通の切換制御手段により一方を現用系とし、他方を予備
系としていずれか一方を選択運用するようにした２重化
ノード装置。An optical splitter is inserted into the optical fiber transmission line to split the optical signal into two, each input to two node devices, and the outputs of each of the two node devices are combined by an optical combiner and connected to the optical fiber transmission line. At the same time, the two node devices are configured to selectively operate one of them by making one of them an active system and the other one a backup system using a common switching control means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29165785A JPS62150952A (en) | 1985-12-24 | 1985-12-24 | Duplicated node equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29165785A JPS62150952A (en) | 1985-12-24 | 1985-12-24 | Duplicated node equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62150952A true JPS62150952A (en) | 1987-07-04 |
Family
ID=17771774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29165785A Pending JPS62150952A (en) | 1985-12-24 | 1985-12-24 | Duplicated node equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62150952A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03136533A (en) * | 1989-10-23 | 1991-06-11 | Nippon Telegr & Teleph Corp <Ntt> | Control system for constitution of decentralizing system |
| WO2007080831A1 (en) * | 2006-01-11 | 2007-07-19 | Nec Corporation | Packet ring network system, packet transfer system, redundancy node, and packet transfer program |
-
1985
- 1985-12-24 JP JP29165785A patent/JPS62150952A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03136533A (en) * | 1989-10-23 | 1991-06-11 | Nippon Telegr & Teleph Corp <Ntt> | Control system for constitution of decentralizing system |
| WO2007080831A1 (en) * | 2006-01-11 | 2007-07-19 | Nec Corporation | Packet ring network system, packet transfer system, redundancy node, and packet transfer program |
| US8072878B2 (en) | 2006-01-11 | 2011-12-06 | Nec Corporation | Packet ring network system, packet transfer system, redundancy node, and packet transfer program |
| JP4935681B2 (en) * | 2006-01-11 | 2012-05-23 | 日本電気株式会社 | Packet ring network system, packet transfer method, redundant node, and packet transfer program |
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