JPH0568138B2 - - Google Patents
Info
- Publication number
- JPH0568138B2 JPH0568138B2 JP59013247A JP1324784A JPH0568138B2 JP H0568138 B2 JPH0568138 B2 JP H0568138B2 JP 59013247 A JP59013247 A JP 59013247A JP 1324784 A JP1324784 A JP 1324784A JP H0568138 B2 JPH0568138 B2 JP H0568138B2
- Authority
- JP
- Japan
- Prior art keywords
- node
- nodes
- host
- physical connection
- backup
- 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 - Lifetime
Links
- 238000012544 monitoring process Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 7
- 230000003287 optical effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F15/00—Digital computers in general; Data processing equipment in general
- G06F15/16—Combinations of two or more digital computers each having at least an arithmetic unit, a program unit and a register, e.g. for a simultaneous processing of several programs
- G06F15/161—Computing infrastructure, e.g. computer clusters, blade chassis or hardware partitioning
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F15/00—Digital computers in general; Data processing equipment in general
- G06F15/16—Combinations of two or more digital computers each having at least an arithmetic unit, a program unit and a register, e.g. for a simultaneous processing of several programs
- G06F15/163—Interprocessor communication
- G06F15/173—Interprocessor communication using an interconnection network, e.g. matrix, shuffle, pyramid, star, snowflake
- G06F15/17337—Direct connection machines, e.g. completely connected computers, point to point communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Software Systems (AREA)
- General Physics & Mathematics (AREA)
- Small-Scale Networks (AREA)
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、複数のノードから構成されるネツト
ワークシステムにおけるノードの一括切替方式に
関し、特にノードがグループ化され、現用ノード
と予備用ノードの存在する光ネツトワークシステ
ムのノードの一括切替に有効な切替方式に関す
る。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a method for batch switching of nodes in a network system composed of a plurality of nodes, and in particular, the present invention relates to a method for batch switching of nodes in a network system consisting of a plurality of nodes, and in particular, when nodes are grouped and This invention relates to a switching method effective for batch switching of nodes in an optical network system.
従来の汎用大型コンピユータシステム系の切替
装置は、データ信号として通常の電気信号を用い
るため減衰量が大きくノード間の距離が100m以
内と短い上、機種に制限があり、他のメーカの異
なる機種間でネツトワークを構成しにくいという
欠点があつた。
Conventional switching devices for general-purpose large computer systems use ordinary electrical signals as data signals, resulting in large attenuation and short distances between nodes of less than 100 meters.Moreover, there are restrictions on the types of devices, and there is no connection between different models from other manufacturers. The drawback was that it was difficult to configure a network.
本発明は上述の点にかんがみてなされたもの
で、光ループ系のシステムにおいて、ノードの障
害で関連するノードの切替えを個々のノードで行
なわず、ノード制御装置で集中的に行う、安全
性、操用性に優れたノード一括切替方式を提供す
ることを目的とする。
The present invention has been made in view of the above-mentioned points, and provides safety and security in an optical loop system in which switching of related nodes in the event of a node failure is performed centrally by a node control device instead of being performed by each individual node. The purpose is to provide a method for batch switching of nodes with excellent operability.
〔発明の概要〕
本発明の要転は、複数のノードで構成されるル
ープ状のネツトワークシステムにおいて、全ノー
ド間の物理的接続状況を記憶する記憶手段を有
し、かつ全ノードを監視するノード制御装置を設
け、ノード障害時、ノード制御装置が予備のノー
ドを検出し、当該ノードに関連する全ての物理的
接続関係を予備ノードに置き換え前記記憶手段に
記憶すると共に、ノード障害でノードの物理的接
続状況の変更となる全てのノードに対して新ノー
ド接続状況を知らせるようにした点にある。[Summary of the Invention] The key point of the present invention is to provide a loop network system consisting of a plurality of nodes, which has storage means for storing the physical connection status between all the nodes, and which monitors all the nodes. A node control device is provided, and in the event of a node failure, the node control device detects a spare node, replaces all physical connection relationships related to the node with the spare node, stores it in the storage means, and also stores it in the storage means when the node fails. The main point is that all nodes whose physical connection status changes are notified of the new node connection status.
以下、本発明の実施例を図面に基づいて説明す
る。
Embodiments of the present invention will be described below based on the drawings.
第１図は、ネツトワークシステムのノード構成
とノード制御装置の関連を示すブロツク図であ
る。図示するように、光ループ１には複数ノード
（ノードプロセツサ）Ａ，Ｂ…Ｚ、ａ，ｂ…ｚ、
１，２…ｎを介してホスト（CPU）群Ａ，Ｂ，
Ｃが接続され、さらにノード制御装置３が接続さ
れている。ホスト群Ａは、現用のホストA1，A2
…と予備用のホストAoで構成され、ホスト群Ｂ
も現用のホストB1，B2…と予備用のホストBoで
構成され、さらにホスト群Ｃも現用のホストC1，
C2…と予備用のホストCoで構成されている。い
ま、ノードＢとノードｂ，１，２の間に物理的接
続関係があり、ホストＡ群のホストA2とホスト
Ｂ群のホストB2、ホストＣ群のホストC1，C2の
間でデータが送受されているものとする。この状
態でホストＡ群のノードＢに障害が発生し、ノー
ドＺに切替えると、この動作にともない、ホスト
Ｂ群のノードｂおよびホストｃ群のノード１，２
も切替わり、第２図に示すような接続関係とな
る。 FIG. 1 is a block diagram showing the relationship between the node configuration of the network system and the node control device. As shown in the figure, the optical loop 1 includes multiple nodes (node processors) A, B...Z, a, b...z,
1, 2...n to host (CPU) groups A, B,
C is connected, and further a node control device 3 is connected. Host group A includes current hosts A 1 and A 2
...and backup host A o , host group B
The host group C also consists of the current hosts B 1 , B 2 , etc. and the backup host B o , and the host group C also consists of the current hosts C 1 , B 2 , etc.
It consists of C 2 ... and a spare host C o . Now, there is a physical connection relationship between node B and nodes b, 1, and 2, and between host A 2 of host A group, host B 2 of host B group, and hosts C 1 and C 2 of host C group. It is assumed that data is being sent and received. In this state, if a failure occurs in node B of host group A and it is switched to node Z, as a result of this operation, node b of host group B and nodes 1 and 2 of host group C are
The connections are also switched, resulting in a connection relationship as shown in FIG.
ノード制御装置３には、全ノードの状況を把握
するための記憶手段を有し、該記憶手段には第３
図に示すノード構成表が記憶されている。該ノー
ド構成表には、ノード番号を記憶するノード番号
の項31、各ホスト群のホスト番号を記憶するグル
ープ番号の項32、前記各ノードおよびホストが現
用かあるいは予備かを１または０で示す現用／予
備の項33が設けられており、さらに各ノード番号
に対する接続ノードの項が設けられている。第３
図は、第１図のノード構成表を示す。この状態に
おいて、ホストＡ群のノードＢに障害が発生し、
ホストＡ群の予備のノードＺに切替わり、第２図
に示すようにノード構成が変化する場合、第３図
のア、イ、ウ、エの部分に変化が生じノード制御
装置３は第４図に示す新しいノード構成を作る。
すなわち、ノードＢとホストA2が“０”となり、
予備用のノードＺと予備用のホストAoが現用
“１”となり、ノードＺにノード１，２およびノ
ードｂが接続される（第４図のア参照）。ノード
ｂにはノードＺが接続され（第４図のエ参照）、
ノード１および２にもそれぞれノードＺが接続さ
れる（第４図のイ、ウ参照）。 The node control device 3 has a storage means for grasping the status of all nodes, and the storage means includes a third
A node configuration table shown in the figure is stored. The node configuration table includes a node number field 31 that stores the node number, a group number field 32 that stores the host number of each host group, and a 1 or 0 that indicates whether each node and host is active or spare. A current/standby section 33 is provided, and a connection node section for each node number is also provided. Third
The figure shows the node configuration table of FIG. In this state, a failure occurs in node B of host group A,
When switching to spare node Z of host group A and the node configuration changes as shown in FIG. 2, changes occur in parts A, B, C, and E in FIG. Create a new node configuration as shown in the diagram.
In other words, node B and host A 2 become “0”,
The backup node Z and the backup host A o become active "1", and the nodes 1, 2 and node b are connected to the node Z (see A in FIG. 4). Node Z is connected to node b (see d in Figure 4),
Nodes Z are also connected to nodes 1 and 2, respectively (see A and C in FIG. 4).
第５図は、ノード制御装置の動作を説明するフ
ローチヤートである。同図に示すようにノード制
御装置３は、全ノードＡ，Ｂ…Ｚ、ａ，ｂ…ｚ，
１，２…ｎに対して一定時間間隔で監視信号を送
出し、全現用ノードの監視を行う（ステツプ51）。
次に前記監視信号に対して、ノードから応答が無
い時または障害応答を受信することによりノード
の障害を検出する（ステツプ52）。障害が検出さ
れなかつたらノードの監視を継続する。もし障害
が発生した場合、以下の手順によりノードの切替
え（物理的接続関係の変更）を行なう。まず、第
３図に示すノード構成表を参照し、障害ノードが
どのノードグループ（ホスト群）に存在し、当該
ノードグループの予備のノードはどれかを検知し
て、障害ノードの予備ノードを求め、該予備ノー
ドを現用ノードとした第４図に示す新ノード構成
表を作成する（ステツプ53）。次に前記予備ノー
ドに一定時間間隔で監視信号を送り、予備ノード
の開通を監視する（ステツプ54）。予備ノードか
ら応答があつた場合、第４図に示す新ノード構成
表の関連ノードへ新ノード構成表を配分する（ス
テツプ55）。なお、ノード障害中は、全てのノー
ドは、障害ノードへの処理を閉塞する。 FIG. 5 is a flowchart illustrating the operation of the node control device. As shown in the figure, the node control device 3 controls all nodes A, B...Z, a, b...z,
A monitoring signal is sent to nodes 1, 2, . . . n at regular time intervals to monitor all active nodes (step 51).
Next, a node failure is detected when there is no response from the node to the monitoring signal or when a failure response is received (step 52). Continue monitoring the node if no failure is detected. If a failure occurs, switch nodes (change physical connections) using the following procedure. First, by referring to the node configuration table shown in Figure 3, detect in which node group (host group) the failed node exists and which spare node is in that node group, and find the spare node for the failed node. , a new node configuration table shown in FIG. 4 is created with the spare node as the working node (step 53). Next, a monitoring signal is sent to the backup node at regular time intervals to monitor the opening of the backup node (step 54). When a response is received from the backup node, the new node configuration table is distributed to the related nodes in the new node configuration table shown in FIG. 4 (step 55). Note that during a node failure, all nodes block processing to the failed node.
上記実施例によれば、複数ノードで構成される
光ネツトワークシステムで、ノード障害時のノー
ド切替えが自動的にしかも確実に行うことができ
る。また、全ノードの監視および切替を１個のノ
ード制御装置３で行うので、ノードの増設、徹去
等が容易となり、さらにノード制御装置が各ノー
ドに対して障害監視、開通監視、物理的接続関係
の配布を行なうことにより、ノード切替をネツト
ワークだけで実現できるのでホストの負担が少な
くてすむ。勿論、本発明は光ネツトワークシステ
ム以外にも適用可能であることは云うまでもな
い。 According to the above embodiment, in an optical network system composed of a plurality of nodes, node switching in the event of a node failure can be performed automatically and reliably. In addition, since monitoring and switching of all nodes is performed by one node control device 3, it is easy to add or remove nodes, and the node control device also performs fault monitoring, opening monitoring, and physical connection for each node. By distributing relationships, node switching can be accomplished using only the network, reducing the burden on the host. Of course, it goes without saying that the present invention is applicable to systems other than optical network systems.
以上説明したように本発明によれば、複数ノー
ドで構成されるネツトワークシステムでのノード
障害時のノードの切替えが、ホストの負担を少な
く、自動的に確実に行うことができ、しかもノー
ド増設、徹去も容易にできる等の優れた効果が得
られる。
As explained above, according to the present invention, switching of nodes in the event of a node failure in a network system consisting of multiple nodes can be performed automatically and reliably with less burden on the host. Excellent effects such as easy removal can be obtained.
第１図はネツトワークシステムの全体構成を示
すブロツク図、第２図は前記ネツトワークシステ
ムのノードの切替え例を示すブロツク図、第３図
は旧ノード構成例を示す図、第４図は新ノード構
成例を示す図、第５図はノード制御装置の動作を
説明するフローチヤート図である。
A1〜Ao，B1〜Bo，C1〜Co…ホスト、Ａ…Ｚ，
ａ〜Ｚ，ａ〜ｚ，１〜ｎ…ノード、１…光ルー
プ、２…ノード、３…ノード制御装置。
Figure 1 is a block diagram showing the overall configuration of the network system, Figure 2 is a block diagram showing an example of node switching in the network system, Figure 3 is a diagram showing an example of the old node configuration, and Figure 4 is a diagram showing the new node configuration. FIG. 5, which is a diagram showing an example of a node configuration, is a flowchart explaining the operation of the node control device. A1 ~ Ao , B1 ~ Bo , C1 ~ Co ...Host, A...Z,
a to Z, a to z, 1 to n...node, 1...optical loop, 2...node, 3...node control device.
Claims (1)
て複数のホストが接続されるネツトワークシステ
ムにおいて、前記複数のノードとホストは、複数
のグループに区分され、各グループは現用ノード
と予備用ノードおよび現用ホストと予備用ホスト
とから構成され、前記ループ状ネツトワークは前
記複数ノード間の物理的接続関係を記憶する記憶
手段と前記複数の全ノードを監視するノード制御
装置とを有し、前記ノード制御装置は、前記現用
ノード中に障害の発生を検出すると、当該障害現
用ノードの属するグループの予備用ノードを検知
し、前記予備用ノードを新たに現用ノードとし
て、当該障害ノードと物理的接続関係のある全て
のノードに、新たな現用ノードとの物理的接続関
係を設定し、前記記憶手段に記憶すると共に、新
たな現用ノードの開通を監視し、開通後、当該障
害ノードと物理的接続関係のあつた全てのノード
に、更新後のノードの物理的接続関係を配布する
ことにより、ノードの物理的接続関係の切替えを
行なうことを特徴とするネツトワークシステムに
おけるノードの一括切替方式。1. In a network system in which multiple hosts are connected to a loop network via multiple nodes, the multiple nodes and hosts are divided into multiple groups, and each group consists of a working node, a backup node, and a working node. The loop-like network is composed of a host and a backup host, and has a storage means for storing physical connection relationships among the plurality of nodes, and a node control device for monitoring all of the plurality of nodes, When the device detects the occurrence of a failure in the active node, it detects a backup node in the group to which the failed active node belongs, and establishes a physical connection relationship with the failed node by making the backup node a new active node. A physical connection relationship with a new active node is set for all nodes, and is stored in the storage means, and the opening of the new active node is monitored, and after the new active node is established, the physical connection relationship with the failed node is determined. 1. A batch switching method for nodes in a network system, characterized in that physical connection relationships of nodes are switched by distributing updated physical connection relationships of nodes to all nodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59013247A JPS60158748A (en) | 1984-01-30 | 1984-01-30 | Total node switching system for network system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59013247A JPS60158748A (en) | 1984-01-30 | 1984-01-30 | Total node switching system for network system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60158748A JPS60158748A (en) | 1985-08-20 |
| JPH0568138B2 true JPH0568138B2 (en) | 1993-09-28 |
Family
ID=11827873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59013247A Granted JPS60158748A (en) | 1984-01-30 | 1984-01-30 | Total node switching system for network system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60158748A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54133859A (en) * | 1978-04-08 | 1979-10-17 | Toshiba Corp | Backing-up method of electronic computer system |
| JPS5778242A (en) * | 1980-10-31 | 1982-05-15 | Fujitsu Ltd | Retrieving system for connection position of station to be monitored in loop transmission network |
| JPS5819058A (en) * | 1981-07-25 | 1983-02-03 | Fuji Electric Co Ltd | Constitution control system in dataway system |
-
1984
- 1984-01-30 JP JP59013247A patent/JPS60158748A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54133859A (en) * | 1978-04-08 | 1979-10-17 | Toshiba Corp | Backing-up method of electronic computer system |
| JPS5778242A (en) * | 1980-10-31 | 1982-05-15 | Fujitsu Ltd | Retrieving system for connection position of station to be monitored in loop transmission network |
| JPS5819058A (en) * | 1981-07-25 | 1983-02-03 | Fuji Electric Co Ltd | Constitution control system in dataway system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60158748A (en) | 1985-08-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |