JPS6242252A - Switching system for communication controller - Google Patents
Switching system for communication controllerInfo
- Publication number
- JPS6242252A JPS6242252A JP60182240A JP18224085A JPS6242252A JP S6242252 A JPS6242252 A JP S6242252A JP 60182240 A JP60182240 A JP 60182240A JP 18224085 A JP18224085 A JP 18224085A JP S6242252 A JPS6242252 A JP S6242252A
- Authority
- JP
- Japan
- Prior art keywords
- communication control
- control device
- controller
- backup
- storage 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
Landscapes
- Computer And Data Communications (AREA)
- Maintenance And Management Of Digital Transmission (AREA)
Abstract
Description
【発明の詳細な説明】
［概 要］
予備の通信制御装置を待機させておいて、現用の通信制
御装置に障害が発生しなとき、監視プロセッサが指示す
ることによって、現用の通信制御装置と予備の通信制御
装置とを切り替えるごとく構成された系において、従来
、その切り替えに際しては、予備の通信制御装置に接続
されている記憶装置に外部記憶などから制御プログラム
をＩＰＬする必要があり、また、ＩＰＬ終了後も障害に
遭遇した回線の調査とその処理に長時間を要しサービス
の再開が遅くなるという欠点があったので、これを解決
するため、現用の通信制御装置と予備の通信制御装置と
の両方からアクセスできる記憶装置に制御プログラム等
をロードしておいて、現用の通信制御装置が障害を起こ
したとき予備の通信制御装置１が直ちに該記憶装置の内
容を使って走行を継続することにより迅速な切り替えを
行なうことのできる制御方式を開示している。[Detailed Description of the Invention] [Summary] When a standby communication control device is kept on standby and no failure occurs in the current communication control device, the monitoring processor instructs the communication control device to switch between the backup communication control device and the current communication control device. Conventionally, in a system configured to switch between a standby communication control device and a standby communication control device, it has been necessary to IPL a control program from an external storage to a storage device connected to the standby communication control device. Even after the IPL ended, it took a long time to investigate and process faulty lines, which delayed service resumption. A control program, etc. is loaded into a storage device that can be accessed from both the storage device and the storage device, so that when the current communication control device fails, the backup communication control device 1 immediately uses the contents of the storage device to continue running. The present invention discloses a control method that allows quick switching.
［従来の技術］
第２図は従来の通信制御装置切替方式を説明する図であ
って、１はホスト計算機、２は現用の通信制御装置、３
は予備の通信制御装置、４．５はそれぞれ記憶装置、６
は回線接続装置、７は通信回線、８は監視プロセッサを
表している。[Prior Art] FIG. 2 is a diagram illustrating a conventional communication control device switching system, in which 1 is a host computer, 2 is a current communication control device, and 3 is a diagram for explaining a conventional communication control device switching method.
is a spare communication control device, 4.5 is a storage device, and 6 is a spare communication control device.
7 represents a line connection device, 7 represents a communication line, and 8 represents a monitoring processor.
第２図に示す系において、その立ち上げに際しては、現
用の通信制御装置２の制御プログラムをホスト計算機１
から転送して記憶装置４にロード（ＩＰＬ）する、そし
て通信制御装置２は該制御プログラムが走行することに
よって制御される。In the system shown in FIG. 2, when starting up the system, the control program for the current communication control device 2 is
The communication control device 2 is controlled by the execution of the control program.
通信制御装置２に障害が発生して、これを監視プロセッ
サ８が検知すると、回線接続装置６において、通信回線
の閉塞や切断を行なうと共に、予備の通信制御装置３を
動作せしめるべく０、ホスト計算機より制御プログラム
を転送して記憶装置５にロード（ＩＰＬ＞する。そして
、更に回線接続装置６を予備の通信制御装置３に接続し
て通信に係るサービスを再開する。When a failure occurs in the communication control device 2 and the monitoring processor 8 detects this, the line connection device 6 blocks or disconnects the communication line, and also restarts the host computer in order to operate the backup communication control device 3. Then, the control program is transferred and loaded (IPL) into the storage device 5. Then, the line connection device 6 is further connected to the standby communication control device 3, and the service related to communication is restarted.
［発明が解決しようとする問題点］
上述した従来の通信制御装置切替方式においては５通信
制御装置の切り替えに際して、予備の通信制御装置に制
御プログラムをロードする必要があり、また、通信を再
開するとき、罹障状態の確認やその措置等のための処理
に長時間を要するという問題点があった。[Problems to be Solved by the Invention] In the conventional communication control device switching method described above, when switching between the five communication control devices, it is necessary to load a control program into a spare communication control device, and it is also necessary to restart communication. At the time, there was a problem in that it took a long time to confirm the disease state and take measures.
本発明は、このような従来の問題点に鑑み、現用の通信
制御装置が障害を発生したとき、予備の通信制御装置と
迅速に切り替えることの可能な制御方式を提供すること
を目的としている。SUMMARY OF THE INVENTION In view of these conventional problems, it is an object of the present invention to provide a control system that can quickly switch over to a standby communication control device when a failure occurs in the current communication control device.
［問題点を解決するための手段］
そしてこの目的は本発明によれば特許請求の範囲に記載
のとおり、記憶装置にロードした制御プログラムにより
制御される複数の通信制御装置と監視プロセッサを有し
、通信制御装置の少なくとも１台は予備として待機して
いて現用の通信制御装置に障害が発生したとき、監視プ
ロセッサからの指示により現用の通信制御装置と予備の
通信制御装置どの切り替えが行なわれるごとく構成され
た系において、現用の通信制御装置および予備の通信制
御装置のいずれからも同一記憶装置にアクセスすること
が可能な手段を設け、現用の通信制御装置に障害が発生
したとき、記憶装置内の現用の通信制御装置が用いてい
た制御プログラムを含む情報を保持せしめたまま、通信
制御装置の切り替えを行ない、予備の通信制御装置が該
記憶装置に保持されている情報を用いて、直ちに処理を
開始することを特徴とする通信制御装置切替方式により
達成される。[Means for Solving the Problems] According to the present invention, as described in the claims, this object includes a plurality of communication control devices and a monitoring processor controlled by a control program loaded into a storage device. At least one of the communication control devices is on standby as a backup, and when a failure occurs in the current communication control device, the current communication control device and the backup communication control device are switched according to instructions from the monitoring processor. In the configured system, a means is provided that allows both the current communication control device and the standby communication control device to access the same storage device, so that when a failure occurs in the current communication control device, the storage device can be accessed. The communication control device is switched while retaining the information including the control program used by the current communication control device, and the backup communication control device immediately performs processing using the information held in the storage device. This is achieved by a communication control device switching method characterized by starting the communication control device.
［実 施 例］
第１図は本発明の１実施例のブロック図であって、１〜
３および６〜８は第２図と同様であり、９は現用の通信
制御装置と予備の通信制御装置が共通に用いる記憶装置
を表している。[Embodiment] FIG. 1 is a block diagram of one embodiment of the present invention, and shows 1 to 1.
3 and 6 to 8 are the same as in FIG. 2, and 9 represents a storage device commonly used by the current communication control device and the standby communication control device.
第１図において、ホスト計算機１と現用の通信制御装置
２および回線接続装置６とが接続されており、また、該
通信制御装Ｗ！２が記＋ｆ１装置９にロードされている
制御プログラムにより動作しているとき、現用の通信制
御装置２に障害が発生してこれが監視プロセッサ８に検
出されると、監視プロセッサ８は、現用の通信制御装置
２を系から論理的に切り離すと共に予備の通信制御装置
３を論理的に系に接続する。このとき記憶装置９はその
内容が凍結され、予備の通信制御装置３に論理的に接続
されると凍結が解除されて、予備の通信制御装置３は、
該記憶装置の内容を恰もそれまで自己が使用していたか
のごとく接続して動作する。In FIG. 1, a host computer 1, a current communication control device 2, and a line connection device 6 are connected, and the communication control device W! When a failure occurs in the current communication control device 2 and is detected by the monitoring processor 8 while the current communication control device 2 is operating according to the control program loaded into the f1 device 9, the monitoring processor 8 The control device 2 is logically separated from the system, and the spare communication control device 3 is logically connected to the system. At this time, the contents of the storage device 9 are frozen, and when it is logically connected to the backup communication control device 3, the freeze is released, and the backup communication control device 3 is
It operates by connecting the contents of the storage device as if it had been used by itself.
データを伝送中に罹障した回線についてのデータの補償
に係る処理は、現用の通信制御装置の障害の内容によっ
て若干異なるが、いずれ◆こしても、罹障当時の記憶装
置の内容がそのまま引き継がれるので、その処理は従来
に比して容易であり、かなり迅速に行なえる。The processing related to data compensation for a line that was damaged during data transmission differs slightly depending on the nature of the fault in the current communication control equipment, but in any case, the contents of the storage device at the time of the fault will be carried over as is. Therefore, the process is easier than before and can be done fairly quickly.
前述した監視プロセッサによる現用の通信制御装置の障
害の検出については、例えば監視プロセッサから現用の
通信制御装置に対して定期的にコマンド（例えば診断用
のコマンド等）を送出して、これに対する通信制御装置
の応答状況を監視していて、一定時間たっても無応答で
あったり、応答に不都合があったときに障害が発生した
と判断する等の方法がある。For the above-mentioned monitoring processor to detect a failure in the current communication control device, for example, the monitoring processor periodically sends commands (for example, diagnostic commands, etc.) to the current communication control device, and performs communication control in response to the commands. There is a method of monitoring the response status of the device and determining that a failure has occurred if there is no response after a certain period of time or if there is an inconvenience in the response.
また、現用の通信制御装置から予備の通信制御装置への
切り替えに際し、装置の種類によって、内部レジスタ等
の内容の相異による不都合を生ずることが考えられるが
、このような場合には、切り替えに際して、両通信制御
装置の内部レジスタ等を初期化して同期させるか、ある
いは、必要に応じてレジスタ内容を複写することにより
対処可能である。Also, when switching from the current communication control device to the standby communication control device, it is possible that inconveniences may occur due to differences in the contents of internal registers, etc. depending on the type of device. This can be dealt with by initializing and synchronizing the internal registers of both communication control devices, or by copying the contents of the registers as necessary.
［発明の効果］
以上説明したように、本発明の方式によれば、待機形の
予備通信制御装置を擁する系において、現用の通信制御
装置が障害を発生したとき、迅速に予備の通信制御装置
への切り替えが行なえると共に罹障回線のデータの補償
に係る処理も容易に行なえるから系の信頼性を向上せし
めることが可能であり効果は大である。[Effects of the Invention] As explained above, according to the system of the present invention, when a failure occurs in the active communication control device in a system including a standby type backup communication control device, the backup communication control device can be quickly installed. It is possible to switch to the system and also easily perform processing related to data compensation of the affected line, making it possible to improve the reliability of the system, which is highly effective.
第１図は本発明の１実施例のブロック区、第２図は従来
の通信制御装置切替方式を説明する図である。
１・・・ホスト計算機、２・・・現用の通信制御装置、
３・・・予備の通信制御装置、４．５．９・・・記憶装
置、６・・・回線接続装置、７・・・通信回線、８・・
・監視プロセッサFIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a diagram illustrating a conventional communication control device switching system. 1... host computer, 2... current communication control device,
3... Spare communication control device, 4.5.9... Storage device, 6... Line connection device, 7... Communication line, 8...
・Monitoring processor
Claims (1)
複数の通信制御装置と監視プロセッサを有し、通信制御
装置の少なくとも１台は予備として待機していて現用の
通信制御装置に障害が発生したとき、監視プロセッサか
らの指示により現用の通信制御装置と予備の通信制御装
置との切り替えが行なわれるごとく構成された系におい
て、現用の通信制御装置および予備の通信制御装置のい
ずれからも同一記憶装置にアクセスすることが可能な手
段を設け、現用の通信制御装置に障害が発生したとき、
記憶装置内の現用の通信制御装置が用いていた制御プロ
グラムを含む情報を保持せしめたまま、通信制御装置の
切り替えを行ない、予備の通信制御装置が該記憶装置に
保持されている情報を用いて、直ちに処理を開始するこ
とを特徴とする通信制御装置切替方式。It has a plurality of communication control devices and a monitoring processor that are controlled by a control program loaded into a storage device, and at least one of the communication control devices is on standby as a backup and can be used for monitoring when a failure occurs in the current communication control device. In a system configured such that switching between the current communication control device and the backup communication control device is performed according to instructions from the processor, accessing the same storage device from both the current communication control device and the backup communication control device If a failure occurs in the current communication control equipment,
The communication control device is switched while retaining the information including the control program used by the current communication control device in the storage device, and the backup communication control device uses the information held in the storage device. , a communication control device switching method characterized in that processing starts immediately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60182240A JPS6242252A (en) | 1985-08-20 | 1985-08-20 | Switching system for communication controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60182240A JPS6242252A (en) | 1985-08-20 | 1985-08-20 | Switching system for communication controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6242252A true JPS6242252A (en) | 1987-02-24 |
Family
ID=16114792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60182240A Pending JPS6242252A (en) | 1985-08-20 | 1985-08-20 | Switching system for communication controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6242252A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01223859A (en) * | 1988-03-02 | 1989-09-06 | Nec Corp | Data communication processing equipment duplex system |
| US5825546A (en) * | 1996-01-12 | 1998-10-20 | Nikon Corporation | "Macro" Photographic lens having long focal length and vibration compensation |
| JP2006272806A (en) * | 2005-03-30 | 2006-10-12 | Seiko Epson Corp | Filter for liquid jetting head and liquid jetting apparatus |
-
1985
- 1985-08-20 JP JP60182240A patent/JPS6242252A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01223859A (en) * | 1988-03-02 | 1989-09-06 | Nec Corp | Data communication processing equipment duplex system |
| US5825546A (en) * | 1996-01-12 | 1998-10-20 | Nikon Corporation | "Macro" Photographic lens having long focal length and vibration compensation |
| JP2006272806A (en) * | 2005-03-30 | 2006-10-12 | Seiko Epson Corp | Filter for liquid jetting head and liquid jetting apparatus |
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