JPH0129335B2 - - Google Patents
Info
- Publication number
- JPH0129335B2 JPH0129335B2 JP57098207A JP9820782A JPH0129335B2 JP H0129335 B2 JPH0129335 B2 JP H0129335B2 JP 57098207 A JP57098207 A JP 57098207A JP 9820782 A JP9820782 A JP 9820782A JP H0129335 B2 JPH0129335 B2 JP H0129335B2
- Authority
- JP
- Japan
- Prior art keywords
- station
- stations
- network
- monitored
- monitoring
- 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
Links
- 238000004891 communication Methods 0.000 claims description 16
- 238000012790 confirmation Methods 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 6
- 230000005856 abnormality Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 5
- 238000011084 recovery Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
- H04L43/0817—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking functioning
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Description
【発明の詳細な説明】
本発明はデータ交換網の局障害検出方式に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a station failure detection method for a data switching network.
従来、網制御専用の局を有さないデータ交換網
は網内の局の障害を検出できず、障害発生局が障
害回復後障害回復通知を行なうことによつて、局
が障害であつたことを知ることになる。このた
め、局障害が発生しているときに網は、障害発生
局宛のデータを網内に取り入れ、通信不能なデー
タであるにもかかわらず、宛先へ送信すべく網内
を逃走させ、網全体に不必要な負荷を負せる欠点
があつた。 Conventionally, data exchange networks that do not have a dedicated network control station cannot detect a fault in a station within the network, and the faulty station sends a fault recovery notification after the fault has been recovered, thereby confirming that the station was faulty. You will know. Therefore, when a station failure occurs, the network takes in data addressed to the failed station, and even though the data cannot be communicated, it escapes within the network to be sent to the destination. The drawback was that it placed an unnecessary burden on the entire system.
本発明の目的は、網制御専用局を有さないデー
タ交換網において、局障害が発生した場合、その
障害に起因して網全体がかかる負荷が最少限にな
るようにした局障害検出方式を提供することにあ
る。 An object of the present invention is to provide a station failure detection method that minimizes the load placed on the entire network due to the failure when a station failure occurs in a data exchange network that does not have a dedicated network control station. It is about providing.
前記目的を達成するために、本発明による局障
害検出方式は次のように行なう。 In order to achieve the above object, the station failure detection method according to the present invention is performed as follows.
すなわち、データ交換網内の全ての局に対して
監視局と被監視局の関係づけを行ない、その結果
網内の各々の局を他の１局以上の被監視局とし、
１局以上の監視局により監視するように構成す
る。 That is, all stations in the data exchange network are associated with monitoring stations and monitored stations, and as a result, each station in the network is treated as one or more other monitored stations,
It is configured to be monitored by one or more monitoring stations.
監視局になつた局は、被監視局との通信状態を
監視し、通信異常を検出したときはあらかじめ定
められた１つ以上の通信路に被監視局宛の通信状
態確認データを送信し応答を待つ。 A station that has become a monitoring station monitors the communication status with the monitored station, and when a communication abnormality is detected, it responds by sending communication status confirmation data addressed to the monitored station to one or more predetermined communication channels. wait.
そして、一定時間内に被監視局からの応答が無
い場合は、被監視局が障害中であると判断し、網
内の全局への局の障害を通報する。 If there is no response from the monitored station within a certain period of time, it is determined that the monitored station is in failure, and the failure of the station is notified to all stations in the network.
以上のようにして、本発明の目的は達成され
る。 In the manner described above, the object of the present invention is achieved.
次に図面を参照して本発明をさらに詳しく説明
する。 Next, the present invention will be explained in more detail with reference to the drawings.
第１図は本発明の一実施例を示す説明図であ
る。データ交換網を構成するＡ局１はＢ局２の被
監視局であり、Ｂ局２はＡ局１の監視局である。
Ｂ局２はＡ局１との通信状態を監視し、Ａ局１と
の間に定めた一定時間以上の無通信状態を検出し
た場合は、通信状態としてあらかじめ定められた
通信路およびへＡ局１宛の局状態確認データ
を送信する。 FIG. 1 is an explanatory diagram showing one embodiment of the present invention. Station A 1 constituting the data exchange network is a monitored station of station B 2, and station B 2 is a monitoring station of station A 1.
B station 2 monitors the communication status with A station 1, and if it detects a state of no communication with A station 1 for a predetermined period of time or more, the B station Send station status confirmation data addressed to 1.
第２図は局状態確認に対する正常応答を説明す
るための図である。 FIG. 2 is a diagram for explaining a normal response to station status confirmation.
本図に示すように通信異常検出４によつて局状
態確認データ５を送出し、このデータに対してＡ
局１が正常に動作している場合は、Ａ局１は局状
態応答データ６を通信路，を経由させてＢ局
２を送信し、Ａ局１が正常で動作していることを
通知する。 As shown in this figure, station status confirmation data 5 is sent by communication abnormality detection 4, and A
If station 1 is operating normally, station A 1 transmits station status response data 6 to station B 2 via the communication path, and notifies station A 1 that it is operating normally. .
一方、第３図に示すようにＢ局２から送信され
たＡ局１宛の局状態確認データ５に対する応答
が、一定時間（ｔ、ｏ）経過してもＢ局２で受信
できない場合はＡ局１の監視局であるＢ局２はＡ
局１が障害中であると判断して、網内の全ての局
宛にＢ局が障害中であることを通報する。 On the other hand, as shown in FIG. 3, if the response to the station status confirmation data 5 addressed to A station 1 sent from B station 2 cannot be received by B station 2 even after a certain period of time (t, o) has elapsed, A Station B 2, which is the monitoring station of station 1, is A
It is determined that station 1 is in failure and notifies all stations in the network that station B is in failure.
本発明は以上詳しく説明したように、網制御専
用の局を有さないデータ交換網において、網内の
局障害を検出することにより障害発生局宛のデー
タが網内を迷走することを防ぎ、網全体から不要
な負荷を除くことを可能ならしめる効果がある。 As explained in detail above, the present invention prevents data addressed to a failed station from straying within the network by detecting a station failure in the network in a data exchange network that does not have a dedicated network control station. This has the effect of making it possible to remove unnecessary loads from the entire network.
第１図はデータ交換網内での局の関係づけおよ
びその局間の通信路の一実施例を示す図、第２図
は局状態確認に対する正常応答のシーケンスの一
例を示す図、第３図は局状態確認に対する無応答
のシーケンスの一例を示す図である。
１……Ａ局、２……Ｂ局、３……Ｃ局、４……
通信異常検出、５……局状態確認データ、６……
局状態応答データ、７……Ａ局障害判断時点
（ｔ、ｏ）、……Ａ局とＢ局間の通信路、……
Ａ局とＣ局間の通信路、……Ｂ局とＣ局間の通
信路。
Fig. 1 is a diagram showing an example of the relationship between stations in a data exchange network and communication paths between the stations, Fig. 2 is a diagram showing an example of a sequence of normal responses to station status confirmation, Fig. 3 FIG. 2 is a diagram showing an example of a sequence of no response to station status confirmation. 1... Station A, 2... Station B, 3... Station C, 4...
Communication abnormality detection, 5... Station status confirmation data, 6...
Station status response data, 7...A station fault judgment time (t, o),...Communication path between A station and B station,...
A communication path between stations A and C, ... a communication path between stations B and C.
Claims (1)
いて、一つの局に対して１つ以上の局が監視局に
なるように網内の全ての局を関係づけ、監視局が
被監視局と監視局間の通信状態を監視し、通信異
常に対してあらかじめ定められている１つ以上の
通信路を用いて、被監視局へ局状態確認データを
送信し、被監視局から一定時間内に応答がない場
合、障害と判断し、他の全ての局に障害情報を通
知することを特徴とする局障害検出方式。1. In a data exchange network that does not have a dedicated station for network control, all stations in the network are related so that one or more stations are monitoring stations for one station, and the monitoring station is the monitored station. The communication status between monitoring stations is monitored, and in case of communication abnormality, station status confirmation data is sent to the monitored station using one or more predetermined communication channels, and the monitored station is notified within a certain time. A station fault detection method characterized in that if there is no response, it is determined that there is a fault and all other stations are notified of the fault information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57098207A JPS58215149A (en) | 1982-06-08 | 1982-06-08 | Detecting system of failure of station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57098207A JPS58215149A (en) | 1982-06-08 | 1982-06-08 | Detecting system of failure of station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58215149A JPS58215149A (en) | 1983-12-14 |
| JPH0129335B2 true JPH0129335B2 (en) | 1989-06-09 |
Family
ID=14213536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57098207A Granted JPS58215149A (en) | 1982-06-08 | 1982-06-08 | Detecting system of failure of station |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58215149A (en) |
-
1982
- 1982-06-08 JP JP57098207A patent/JPS58215149A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58215149A (en) | 1983-12-14 |
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