JP3431516B2 - Information transmission system - Google Patents
Information transmission systemInfo
- Publication number
- JP3431516B2 JP3431516B2 JP27378098A JP27378098A JP3431516B2 JP 3431516 B2 JP3431516 B2 JP 3431516B2 JP 27378098 A JP27378098 A JP 27378098A JP 27378098 A JP27378098 A JP 27378098A JP 3431516 B2 JP3431516 B2 JP 3431516B2
- Authority
- JP
- Japan
- Prior art keywords
- transmission
- abnormality
- information
- communication path
- reception signal
- 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.)
- Expired - Fee Related
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- Debugging And Monitoring (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Maintenance And Management Of Digital Transmission (AREA)
Description
【0001】[0001]
【発明の属する技術分野】本発明は、通信線などの通信
路を介して、複数の伝送装置間で、送受信信号の授受を
行う情報伝送システムに係わり、特に伝送異常が発生し
たとき、伝送異常の原因を早期に発見させて、伝送異常
を早期に復旧させる情報伝送システムに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information transmission system for transmitting / receiving a transmission / reception signal between a plurality of transmission devices via a communication path such as a communication line, and particularly to a transmission error when a transmission error occurs. The present invention relates to an information transmission system that promptly discovers the cause of an error and recovers a transmission abnormality early.
【0002】[0002]
【従来の技術】通信線を介して、複数の伝送装置の間
で、情報の授受を行う情報伝送システムとして、従来、
図3に示す情報伝送システムが知られている。2. Description of the Related Art Conventionally, as an information transmission system for exchanging information between a plurality of transmission devices via a communication line,
The information transmission system shown in FIG. 3 is known.
【0003】この図に示す情報伝送システム101は、
トレース機能を持つ複数の伝送装置102と、これらの
各伝送装置102を接続する通信線103とを備えてお
り、通信線103を介して、各伝送装置102の間で送
受信信号の授受を行う。The information transmission system 101 shown in this figure is
A plurality of transmission devices 102 having a trace function and a communication line 103 connecting each of these transmission devices 102 are provided, and transmission / reception signals are exchanged between the transmission devices 102 via the communication line 103.
【0004】そして、各伝送装置102の間で授受され
る送受信信号に何からの異常が生じ、各伝送装置102
のいずれかによって、これを検知しとき、トレース機能
を使用して、送受信動作で得られる送受信信号の記憶を
開始し、これによって得られた送受信信号の送受信履歴
に基づき、伝送異常の原因調査を行う。Then, an abnormality occurs in the transmission / reception signal transmitted / received between the respective transmission devices 102, and the respective transmission devices 102.
When either of these is detected, the trace function is used to start storing the transmission / reception signal obtained by the transmission / reception operation, and the cause of the transmission abnormality is investigated based on the transmission / reception history of the transmission / reception signal obtained by this. To do.
【0005】[0005]
【発明が解決しようとする課題】ところで、このような
情報伝送システム101では、伝送異常が発生したと
き、これを検知した伝送装置102が持っているトレー
ス機能を使用して、送受信動作で得られた送受信信号の
内容をトレースし、伝送異常の原因を調査するようにし
ているため、稀にしか発生しない伝送異常、あるいは一
瞬で復帰するような伝送異常などが発生したとき、これ
ら伝送異常の原因を見つけ出すことが難しいという問題
があった。By the way, in such an information transmission system 101, when a transmission abnormality occurs, a trace function provided in the transmission device 102 which has detected the transmission abnormality is used to obtain the transmission / reception operation. Since the contents of transmitted and received signals are traced to investigate the cause of transmission abnormalities, when transmission abnormalities that occur infrequently, or transmission abnormalities that recover in an instant occur, the cause of these transmission abnormalities There was a problem that it was difficult to find.
【0006】そこで、このような問題を解決するため、
従来、図4に示すように、伝送異常を検知したとき、各
伝送装置101のトレース機能によって、送受信信号の
内容をトレースさせて、伝送異常の原因と推測される通
信手順を絞り込んだ後、原因となる通信手順が使用され
た時点で、トリガー信号を生成するように、プログラム
を組み替え、さらに伝送装置102または通信線103
に伝送アナライザ装置104を接続し、この伝送アナラ
イザ装置104によって、伝送装置102で授受される
送受信信号を常時、取り込んで記憶させるとともに、伝
送装置102からトリガー信号が出力されたとき、伝送
アナライザ装置104に送受信信号の取り込み処理を停
止させて、伝送異常の原因解析を開始させるという方法
で伝送異常の原因を調査することが多い。Therefore, in order to solve such a problem,
Conventionally, as shown in FIG. 4, when a transmission abnormality is detected, the trace function of each transmission device 101 traces the content of a transmission / reception signal to narrow down the communication procedure that is presumed to be the cause of the transmission abnormality, and The program is rearranged so as to generate a trigger signal when a communication procedure that becomes
A transmission analyzer device 104 is connected to the transmission analyzer device 104, and the transmission analyzer device 104 constantly captures and stores the transmission / reception signal transmitted / received by the transmission device 102, and when the transmission device 102 outputs a trigger signal, the transmission analyzer device 104 In many cases, the cause of the transmission abnormality is investigated by stopping the process of capturing the transmission / reception signal and starting the cause analysis of the transmission abnormality.
【0007】しかしながら、このような異常原因解析方
法では、各伝送装置102のいずれかによって伝送異常
が検知される毎に、トレース機能を使用して、伝送異常
の原因をいくつかに絞り込んだ後、各原因毎に、通信手
順に中にある、伝送異常が発生すると推定される通信手
順の後、トリガー信号を生成させるプログラムを組み込
んで、送受信信号の収集を行うという作業を繰り返さな
ければならず、伝送異常の原因追求に時間と、手間とが
かかり過ぎるという問題があった。However, in such an abnormality cause analysis method, every time any one of the transmission devices 102 detects a transmission abnormality, the trace function is used to narrow down the causes of the transmission abnormality, For each cause, after the communication procedure in the communication procedure in which it is estimated that a transmission abnormality will occur, a program for generating a trigger signal must be installed, and the work of collecting transmission / reception signals must be repeated, There is a problem that it takes too much time and effort to find the cause of the transmission abnormality.
【0008】また、図3に示す情報伝送システム101
で発生する伝送異常の原因を見つけ出す他の方法とし
て、図5に示すように、伝送異常が発生したとき、これ
を検知する機能を持たせた伝送アナライザ装置111を
使用し、伝送異常の原因を解析させる方法も提案されて
いる(特開平4−369047号公報)。Further, the information transmission system 101 shown in FIG.
As another method for finding out the cause of the transmission abnormality that occurs in step 1, as shown in FIG. 5, the transmission analyzer device 111 having a function of detecting the occurrence of the transmission abnormality is used to detect the cause of the transmission abnormality. A method of analyzing has also been proposed (JP-A-4-369047).
【0009】この図5に示す方法では、バッファ選択回
路に予め登録されているトリガー条件に合致する送受信
信号が入力されたとき、この送受信信号が入力されるま
でに入力された送受信信号を保持させることができ、後
でこの送受信信号を解析させてトリガー条件に至った原
因を調査させることができるようにしている。In the method shown in FIG. 5, when a transmission / reception signal matching a trigger condition registered in advance in the buffer selection circuit is input, the transmission / reception signal input is held until the transmission / reception signal is input. The transmission / reception signal can be analyzed later to investigate the cause of the trigger condition.
【0010】しかしながら、このような伝送アナライザ
装置111を使用して、伝送異常が発生するまでに収集
した送受信信号を保持させ、後でこの送受信信号を解析
させて伝送異常の原因を見つけ出すという方法では、送
受信信号がどのような信号であるとき、伝送異常と判定
するかを予め決定し、この決定内容に基づき、バッファ
選択回路にトリガー条件を登録しておかなければならな
い。However, in the method in which the transmission analyzer device 111 as described above is used to hold the transmission / reception signals collected until the transmission abnormality occurs, and then analyze the transmission / reception signal to find the cause of the transmission abnormality. It is necessary to determine in advance what kind of signal the transmission / reception signal is, and determine the transmission abnormality, and register the trigger condition in the buffer selection circuit based on the content of this determination.
【0011】この際、バッファ選択回路に登録したトリ
ガー条件の数より、各伝送装置102に登録する伝送異
常判定条件の数などを少なく設定すると、各伝送装置1
02によって伝送異常と判定される回数より、伝送アナ
ライザ装置111によって伝送異常と判定される回数が
多くなって、各伝送装置102によって伝送異常が発生
したと判定され、これに対応して伝送アナライザ装置1
11に伝送異常時の内容を含む送受信信号が一旦、保持
されても、この後各伝送装置102間で授受される送受
信信号に一時的な異常が発生したとき、バッファ選択回
路に登録した次のトリガー条件がすぐに満たされ、既に
保持されている送受信信号が書き換えられてしまうとい
う問題が発生する。At this time, if the number of transmission abnormality determination conditions registered in each transmission device 102 is set to be smaller than the number of trigger conditions registered in the buffer selection circuit, each transmission device 1
02, the transmission analyzer device 111 determines that the transmission abnormality is greater than the number of times that the transmission analyzer device 111 determines that the transmission abnormality occurs, and the transmission analyzer device determines that the transmission abnormality has occurred. 1
Even if the transmission / reception signal including the contents at the time of transmission abnormality in 11 is once held, when a temporary abnormality occurs in the transmission / reception signal transmitted / received between the transmission devices 102 after this, the next signal registered in the buffer selection circuit is registered. There is a problem that the trigger condition is immediately satisfied and the transmission / reception signal already held is rewritten.
【0012】また逆に、バッファ選択回路に登録するト
リガー条件の数より、各伝送装置102に登録する伝送
異常判定条件の数を多く設定すると、各伝送装置102
によって伝送異常と判定されても、伝送アナライザ装置
111のトリガー条件が満たされずに、伝送異常の原因
を解析するのに必要な送受信信号が保持することができ
ないという問題が発生する。On the contrary, if the number of transmission abnormality determination conditions registered in each transmission device 102 is set to be larger than the number of trigger conditions registered in the buffer selection circuit, each transmission device 102 is set.
Even if it is determined that the transmission is abnormal, the trigger condition of the transmission analyzer device 111 is not satisfied, and the transmission / reception signal necessary for analyzing the cause of the transmission abnormality cannot be held.
【0013】このため、このような伝送アナライザ装置
111を使用するときには、各伝送装置102の伝送異
常判定条件と、伝送アナライザ装置111のトリガー条
件と完全に一致させておかなければならず、各伝送装置
102のプログラムを個別化することができないという
問題があった。Therefore, when such a transmission analyzer device 111 is used, the transmission abnormality determination condition of each transmission device 102 and the trigger condition of the transmission analyzer device 111 must be completely matched, and each transmission There is a problem that the program of the device 102 cannot be individualized.
【0014】本発明は上記の事情に鑑み、簡単なシステ
ム構成であっても伝送異常の原因を早期に見つけ出する
ことができる情報伝送システムを提供することを目的と
している。In view of the above circumstances, it is an object of the present invention to provide an information transmission system capable of early finding the cause of transmission abnormality even with a simple system configuration.
【0015】[0015]
【課題を解決するための手段】上記の目的を達成するた
めに、本発明は、請求項1では、通信路によって相互に
接続され、伝送異常が検知されたとき、伝送異常発生情
報を生成して前記通信路上に伝送する異常情報出力手段
を備えた複数の伝送装置と、前記通信路上に設置され、
前記各伝送装置から前記通信路上に伝送異常発生情報が
出力されるまで、前記通信路上に送出された送受信信号
を取り込んで記憶し、前記通信路上に前記伝送異常発生
信号が出力されたとき、それまでに取り込んだ送受信信
号に基づいて解析処理を開始し、伝送異常の原因を見つ
け出す解析装置とを備えたことを特徴としている。In order to achieve the above-mentioned object, the present invention according to claim 1 produces transmission abnormality occurrence information when they are mutually connected by a communication path and a transmission abnormality is detected. A plurality of transmission devices having an abnormality information output means for transmitting on the communication path, and installed on the communication path,
Until the transmission abnormality occurrence information is output from each of the transmission devices to the communication path, the transmission / reception signal sent to the communication path is captured and stored, and when the transmission abnormality occurrence signal is output to the communication path, It is characterized by including an analysis device for starting the analysis processing based on the transmission / reception signals captured up to and finding the cause of the transmission abnormality.
【0016】請求項2では、請求項1に記載の情報伝送
システムにおいて、前記伝送異常情報出力手段は、リト
ライ処理を行って伝送異常が解除されるかどうかを試し
ても伝送異常が解除されないときにのみ、伝送異常が発
生したと判定して伝送異常発生情報を生成して前記通信
路上に送出することを特徴としている。According to a second aspect of the present invention, in the information transmission system according to the first aspect, when the transmission abnormality information output means does not cancel the transmission abnormality even after trying a retry process to determine whether the transmission abnormality is canceled. Only in this case, it is determined that a transmission abnormality has occurred, transmission abnormality occurrence information is generated and transmitted to the communication path.
【0017】上記の構成により、請求項1では、伝送異
常情報出力手段は、伝送異常が検知されたとき、伝送異
常発生情報を生成して通信路上に送出する。解析装置
は、各伝送装置から通信路上に、伝送異常発生情報が出
力されるまで、通信路上に送出された送受信信号を取り
込んで記憶し、通信路上に前記伝送異常発生情報が出力
されたとき、それまでに取り込んだ送受信信号に基づい
て解析処理を開始し、伝送異常の原因を見つけ出す。こ
れにより、各伝送装置のいずれかによって伝送異常が発
生したとき、解析装置に送受信信号の取り込み処理を停
止させて、既に記憶させている送受信信号の解析を開始
させ、伝送異常の原因を早期に見つけ出させる。With the above arrangement, in the first aspect, the transmission abnormality information output means generates the transmission abnormality occurrence information and sends it to the communication path when the transmission abnormality is detected. The analysis device captures and stores the transmission / reception signal sent on the communication path until the transmission error occurrence information is output from each transmission device, and when the transmission error occurrence information is output on the communication path, The analysis process is started based on the transmission / reception signals captured so far to find the cause of the transmission abnormality. As a result, when a transmission error occurs in any of the transmission devices, the analysis device stops the process of capturing the transmission / reception signal and starts the analysis of the transmission / reception signal that has already been stored, so that the cause of the transmission error can be promptly detected. Let me find it.
【0018】請求項2では、伝送異常情報出力手段は、
リトライ処理を行って伝送異常が解除されるかどうかを
試しても伝送異常が解除されないときにのみ、伝送異常
が発生したと判定して伝送異常発生情報を生成して前記
通信路上に送出する。これにより、各伝送装置のいずれ
かによって、リトライ処理を行っても回復しない伝送異
常が発生したとき、解析装置に送受信信号の取り込み処
理を停止させて、既に記憶させている送受信信号の解析
を開始させ、伝送異常の原因を早期に見つけ出させる。In claim 2, the transmission abnormality information output means is
Only when the transmission abnormality is not canceled even if the transmission abnormality is canceled by performing the retry process, it is determined that the transmission abnormality has occurred, the transmission abnormality occurrence information is generated and transmitted to the communication path. As a result, when a transmission error that does not recover even if retry processing is performed by any of the transmission devices occurs, the analysis device stops the acquisition process of the transmission / reception signals and starts analysis of the transmission / reception signals already stored. Then, the cause of the transmission abnormality is found early.
【0019】[0019]
【発明の実施の形態】図1は本発明による情報伝送シス
テムの実施の形態を示すブロック図である。1 is a block diagram showing an embodiment of an information transmission system according to the present invention.
【0020】この図に示す情報伝送システム1は、トレ
ース機能を持つ複数の伝送装置2と、これらの伝送装置
2を接続する通信線3と、この通信線3に接続され、各
伝送装置2間で授受される送受信信号を取り込んで、こ
れを記憶しながら、各伝送装置2のいずれかから通信線
3上に、伝送異常を検知したことを示す伝送異常発生情
報が出力されたとき、送受信信号の取り込み動作を停止
して、それまでに取り込んで記憶している送受信信号の
解析を開始し、伝送異常の原因を見つけ出す伝送アナラ
イザ装置4とを備えている。特に、この実施の形態にお
ける伝送装置2は、伝送異常情報出力手段を備えてお
り、伝送異常が検知されたとき、伝送異常発生情報を生
成して通信線3上に送出するとともに、伝送異常が復旧
したときには、伝送異常が復帰した旨を示す伝送復帰情
報を生成して通信線3上に送出する。The information transmission system 1 shown in this figure has a plurality of transmission devices 2 having a trace function, a communication line 3 connecting these transmission devices 2, and a communication line 3 connected between the transmission devices 2. When the transmission abnormality signal indicating that the transmission abnormality is detected is output from any one of the transmission devices 2 to the communication line 3 while the transmission / reception signal transmitted / received by the transmission / reception signal is stored, the transmission / reception signal is transmitted. And the transmission analyzer device 4 which finds the cause of the transmission abnormality by starting the analysis of the transmission / reception signals that have been captured and stored by then. Particularly, the transmission device 2 in this embodiment is provided with the transmission abnormality information output means, and when the transmission abnormality is detected, the transmission abnormality occurrence information is generated and sent to the communication line 3, and the transmission abnormality is detected. When the transmission is restored, transmission restoration information indicating that the transmission abnormality has been restored is generated and sent to the communication line 3.
【0021】次に、この実施の形態の動作を説明する。
通信線3を介して各伝送装置2の間で送受信信号の授受
を行っているとき、伝送アナライザ装置4によって、各
伝送装置2の間で授受される送受信信号を取り込んで、
これをFIFO形式で順次、記憶する。Next, the operation of this embodiment will be described.
When transmission / reception signals are transmitted / received between the transmission devices 2 via the communication line 3, the transmission analyzer device 4 captures the transmission / reception signals transmitted / received between the transmission devices 2,
This is sequentially stored in the FIFO format.
【0022】この状態で、各伝送装置2の間で授受され
る送受信信号に異常が生じ、各伝送装置2のいずれかに
よってこれが検知されると、図2のフローチャートに示
すように、リトライ処理を開始し、通信先となる伝送装
置2にリトライ信号を送信して、伝送エラーが生じた部
分を再送信処理、再受信処理させる(ステップST
1)。In this state, when an abnormality occurs in a transmission / reception signal transmitted / received between the transmission devices 2 and this is detected by any of the transmission devices 2, a retry process is performed as shown in the flowchart of FIG. It starts and transmits a retry signal to the transmission device 2 that is the communication destination, and causes the portion in which the transmission error has occurred to be retransmitted and rereceived (step ST
1).
【0023】この際、このようなリトライ処理を所定回
数だけ行っても、伝送異常が解除されないときには(ス
テップST2)、伝送異常を検知した伝送装置2によっ
て、伝送異常が発生したことを示す伝送異常発生情報
(例えば、エラーコード:ERR−00などの情報)を
生成し、これを通信線3上に送出する。これにより、通
信先となる伝送装置2にトリライ処理を行っても伝送異
常がなくならないことを通知して、無駄な送受信処理を
停止させるとともに、伝送アナライザ装置4に伝送異常
が発生したことを通知する(ステップST3)。At this time, if the transmission abnormality is not canceled even after performing such retry processing a predetermined number of times (step ST2), the transmission abnormality indicating that the transmission abnormality has occurred is caused by the transmission device 2 which has detected the transmission abnormality. Occurrence information (for example, information such as error code: ERR-00) is generated and sent to the communication line 3. As a result, the transmission device 2 serving as the communication destination is notified that the transmission abnormality does not disappear even after performing the tri-write process, the useless transmission / reception processing is stopped, and the transmission analyzer device 4 is notified that the transmission abnormality has occurred. Yes (step ST3).
【0024】次いで、伝送アナライザ装置4は送受信信
号の取り込み処理を中止して、それまでに取り込んだ送
受信信号、すなわち伝送異常時に授受された送受信信号
の解析処理を開始し、伝送異常の原因を見つけ出したと
き、オペレータなどに伝送異常の原因に応じた処置を行
わせる。Next, the transmission analyzer device 4 stops the transmission / reception signal acquisition processing and starts the analysis processing of the transmission / reception signals acquired up to that point, that is, the transmission / reception signals transmitted / received at the time of transmission abnormality, and finds the cause of the transmission abnormality. When this happens, let the operator, etc., take appropriate action depending on the cause of the transmission error.
【0025】そして、伝送異常が復旧し、伝送異常を検
知していた伝送装置2によって、これが検知されたとき
(ステップST4)、伝送異常が復帰した旨を示す伝送
復帰情報(例えば、復帰コード:ERR−RECなどの
情報)を生成して、これを通信線3上に送出し、通信先
となる伝送装置2に伝送異常が復旧したことを通知して
送受信処理を再開させるとともに、伝送アナライザ装置
4に伝送異常が発生したことを通知し、送受信信号の取
り込み処理、記憶処理を再開させる(ステップST
5)。Then, when the transmission abnormality is recovered and is detected by the transmission device 2 which has detected the transmission abnormality (step ST4), transmission restoration information indicating that the transmission abnormality has been restored (for example, return code: (Information such as ERR-REC) is generated and transmitted to the communication line 3 to notify the transmission device 2 serving as a communication destination that the transmission abnormality has been recovered, and the transmission / reception process is restarted. 4 is notified that a transmission error has occurred, and the process of fetching the transmission / reception signal and the storage process are restarted (step ST
5).
【0026】このように、この実施の形態では、各伝送
装置2のいずれかによって、リトライ処理を行って伝送
異常が解除されるかどうかを試しても、伝送異常が解除
されないときにのみ、伝送異常が発生したと判定し、こ
の判定結果に基づき、伝送異常発生情報を生成して、こ
れを通信線3上に送出し、各伝送装置2間で授受される
送受信信号の取り込み処理、記憶処理を行っている伝送
アナライザ装置4の送受信信号取り込み処理を停止させ
て、それまでに取り込んだ送受信信号、すなわち伝送異
常時に送受信されていた送受信信号の解析処理を開始さ
せ、伝送異常の原因を見つけ出した時点で、オペレータ
などに伝送異常の原因に応じた処置を行わせるようにし
ているので、各伝送装置2のいずれかによって、リトラ
イ処理を行っても回復しない伝送異常が発生したとき、
伝送アナライザ装置4に送受信信号の取り込み処理を停
止させて、既に記憶されている送受信信号の解析を開始
させ、伝送異常の原因を早期に見つけ出させることがで
きる。As described above, in this embodiment, even if the transmission abnormality is canceled by any one of the transmission devices 2 and the transmission abnormality is canceled, the transmission is not performed. It is determined that an abnormality has occurred, transmission abnormality occurrence information is generated based on this determination result, this is transmitted to the communication line 3, and the transmission / reception signal acquisition processing and storage processing exchanged between the respective transmission devices 2 are performed. The transmission / reception signal acquisition process of the transmission analyzer device 4 that is performing the above is stopped, the analysis process of the transmission / reception signal that has been acquired up to that point, that is, the transmission / reception signal that was transmitted / received at the time of the transmission error is started, and the cause of the transmission error is found At this point in time, the operator or the like is made to take action depending on the cause of the transmission abnormality, so even if a retry process is performed by any of the transmission devices 2. If you do not want to restore transmission error has occurred,
It is possible to cause the transmission analyzer device 4 to stop the process of fetching the transmission / reception signal, start the analysis of the transmission / reception signal already stored, and find the cause of the transmission abnormality early.
【0027】また、この実施の形態では、各伝送装置2
に伝送異常の発生有無を判定する処理を行わせ、この判
定結果に基づき、伝送アナライザ装置4の送受信信号取
り込み動作を制御するようにしているので、システム全
体のコストを低く抑えながら、伝送異常の原因を早期に
見つけ出させることができる。Further, in this embodiment, each transmission device 2
Is performed to determine whether or not a transmission abnormality has occurred, and the transmission / reception signal acquisition operation of the transmission analyzer device 4 is controlled based on the determination result. The cause can be found early.
【0028】[0028]
【発明の効果】以上説明したように本発明によれば、各
伝送装置によって授受される送受信信号を常時取り込ん
で記憶させる一方、各伝送装置のいずれかによってリト
ライ処理を行っても回復しない伝送異常が発生したと
き、送受信信号の取り込み処理を停止して記憶している
送受信信号の解析を開始させ、これにより簡単なシステ
ム構成であっても伝送異常の原因を早期に見つけ出すこ
とができる。As described above, according to the present invention, a transmission / reception signal transmitted / received by each transmission device is always captured and stored, but a transmission error is not recovered even if a retry process is performed by any of the transmission devices. When the error occurs, the transmission / reception signal acquisition process is stopped and the stored transmission / reception signal is analyzed, whereby the cause of the transmission abnormality can be found early even with a simple system configuration.
【図1】本発明による情報伝送システムの実施の形態を
示すブロック図である。FIG. 1 is a block diagram showing an embodiment of an information transmission system according to the present invention.
【図2】図1に示す情報伝送システムの動作例を示すフ
ローチャートである。FIG. 2 is a flowchart showing an operation example of the information transmission system shown in FIG.
【図3】従来から知られている情報伝送システムの一例
を示すブロック図である。FIG. 3 is a block diagram showing an example of a conventionally known information transmission system.
【図4】図3に示す情報伝送システムで発生する伝送異
常の原因を見つけ出す手法を示すブロック図である。FIG. 4 is a block diagram showing a method for finding the cause of a transmission abnormality occurring in the information transmission system shown in FIG.
【図5】図3に示す情報伝送システムで発生する伝送異
常の原因を見つけ出す他の手法を示すブロック図であ
る。5 is a block diagram showing another method for finding the cause of a transmission abnormality that occurs in the information transmission system shown in FIG.
1 情報伝送システム 2 伝送装置 3 通信線 4 伝送アナライザ装置(解析装置) 5 伝送異常情報出力手段 1 Information transmission system 2 transmission equipment 3 communication lines 4 Transmission analyzer device (analysis device) 5 Transmission error information output means
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7,DB名) H04L 29/14 H04L 12/24 H04L 12/26 G06F 11/34 H04L 1/00 ─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. 7 , DB name) H04L 29/14 H04L 12/24 H04L 12/26 G06F 11/34 H04L 1/00
Claims (2)
常が検知されたとき、伝送異常発生情報を生成して前記
通信路上に伝送する異常情報出力手段を備えた複数の伝
送装置と、前記通信路上に設置され、 前記各伝送装置から前記通信
路上に伝送異常発生情報が出力されるまで、前記通信路
上に送出された送受信信号を取り込んで記憶し、前記通
信路上に前記伝送異常発生信号が出力されたとき、それ
までに取り込んだ送受信信号に基づいて解析処理を開始
し、伝送異常の原因を見つけ出す解析装置と、 を備えたことを特徴とする情報伝送システム。1. A plurality of transmission devices, each of which is connected to each other through a communication path and has abnormality information output means for generating transmission abnormality occurrence information and transmitting it to the communication path when a transmission abnormality is detected, and the communication. Installed on the road, the transmission / reception signal sent on the communication path is captured and stored until the transmission error occurrence information is output on the communication path from each transmission device, and the transmission error occurrence signal is output on the communication path. An information transmission system comprising: an analysis device that starts analysis processing based on the transmission / reception signals captured so far and finds the cause of the transmission abnormality.
いて、 前記伝送異常情報出力手段は、リトライ処理を行って伝
送異常が解除されるかどうかを試しても伝送異常が解除
されないときにのみ、伝送異常が発生したと判定して伝
送異常発生情報を生成して前記通信路上に送出する、 ことを特徴とする情報伝送システム。2. The information transmission system according to claim 1, wherein the transmission abnormality information output unit does not cancel the transmission abnormality even if the transmission abnormality is not canceled even if the transmission abnormality is canceled by performing a retry process. An information transmission system, characterized in that it is determined that a transmission abnormality has occurred, transmission abnormality occurrence information is generated, and transmitted to the communication path.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27378098A JP3431516B2 (en) | 1998-09-28 | 1998-09-28 | Information transmission system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27378098A JP3431516B2 (en) | 1998-09-28 | 1998-09-28 | Information transmission system |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2000106586A JP2000106586A (en) | 2000-04-11 |
JP3431516B2 true JP3431516B2 (en) | 2003-07-28 |
Family
ID=17532483
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP27378098A Expired - Fee Related JP3431516B2 (en) | 1998-09-28 | 1998-09-28 | Information transmission system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3431516B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4829985B2 (en) * | 2009-01-22 | 2011-12-07 | 株式会社日立情報システムズ | Linked computer system and link method thereof |
-
1998
- 1998-09-28 JP JP27378098A patent/JP3431516B2/en not_active Expired - Fee Related
Also Published As
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JP2000106586A (en) | 2000-04-11 |
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