JP2501367B2 - Ring type local area network network management device - Google Patents
Ring type local area network network management deviceInfo
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- JP2501367B2 JP2501367B2 JP16909890A JP16909890A JP2501367B2 JP 2501367 B2 JP2501367 B2 JP 2501367B2 JP 16909890 A JP16909890 A JP 16909890A JP 16909890 A JP16909890 A JP 16909890A JP 2501367 B2 JP2501367 B2 JP 2501367B2
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- network configuration
- communication station
- configuration information
- communication
- packet
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Description
【発明の詳細な説明】 産業上の利用分野 本発明はリング型LANの網構成管理装置に関する。The present invention relates to a ring LAN network configuration management device.
従来の技術 第５図に従来のリング型LANのシステム構成を示す。
通信局A101、B102、C103、D104、E105、F106は伝送路10
0によりリング状に接続されており、LAN内の少なくとも
１つの管理通信局により、通信局の接続順序や動作状態
などの網の構成が管理される。Prior Art FIG. 5 shows a system configuration of a conventional ring LAN.
Communication stations A101, B102, C103, D104, E105, F106 are transmission lines 10
They are connected in a ring shape by 0, and at least one management communication station in the LAN manages the network configuration such as the connection order and operating state of the communication stations.
第６図（ａ）に通信局の構成例を示す。管理通信局を
除く全ての通信局は、網構成情報送信間隔保持部110の
持つ予め決められたパケット送信間隔を時間測定部111
が通知する毎に、パケット送信制御部112は網構成情報
保持部113が有する情報を伝送路100に同報送信する。FIG. 6 (a) shows a configuration example of the communication station. All the communication stations except the management communication station set the predetermined packet transmission interval held by the network configuration information transmission interval holding section 110 to the time measuring section 111.
The packet transmission control unit 112 broadcasts the information held by the network configuration information holding unit 113 to the transmission path 100 each time.
第６図（ｂ）に管理通信局の構成を示す。管理通信局
は他の通信局のもつ構成の他に、パケット受信制御部11
4、網構成推測部115を備える。管理通信局では、他の通
信局が送信した網構成情報をパケット受信制御部114が
受信し、網構成推測部115に伝え、通信局間の接続状態
が網構成として把握する。FIG. 6B shows the configuration of the management communication station. The management communication station has a packet reception control unit 11 in addition to the configuration of other communication stations.
4. A network configuration estimation unit 115 is provided. In the management communication station, the packet reception control unit 114 receives the network configuration information transmitted by the other communication station, transmits it to the network configuration estimation unit 115, and grasps the connection state between the communication stations as the network configuration.
第７図は、上記構成における網構成情報の通信手順例
を示す。黒丸印は時間測定部が送信要求を発生した時点
を示し、白丸印は送信要求がLANのアクセス制御手順に
従って送信された時点を示す。横方向の矢印は伝送路へ
の送信権の委譲の時間的推移を示す。各通信局の情報送
信間隔はTbase120であり、この図の場合、各通信局が送
信した全てのパケット121〜130は、偶然にも通信局間で
適当な間隔をおいて送信され、管理通信局ではもれなく
受信され、網構成を把握することが可能となる。FIG. 7 shows an example of a communication procedure of network configuration information in the above configuration. A black circle indicates the time when the time measuring unit issues a transmission request, and a white circle indicates the time when the transmission request is transmitted according to the access control procedure of the LAN. The horizontal arrow indicates the time transition of the transfer of the transmission right to the transmission path. The information transmission interval of each communication station is Tbase 120, and in this case, all the packets 121 to 130 transmitted by each communication station are accidentally transmitted at appropriate intervals between the communication stations, and the management communication station Then, it is received without exception, and it becomes possible to grasp the network configuration.
発明が解決しようとする課題 ところが、各通信局間の間隔は最初に送信したときの
差がそのまま反映されるだけであって、第８図に示すよ
うに、パケット送信タイミングが全く同期してしまうこ
とがある。この場合、通信局A101とE105、通信局B102と
C103とD104はそれぞれ、同一のトークン140、141を使用
し、パケットは伝送路上で連続して伝送される。もし、
通信局が数十、数百のLANにおいて本例と同様に、送信
タイミングが同期してしまうと、管理通信局のバッファ
不足などにより受信されないことがある。さらに悪いこ
とに、一旦、同期状態になると、各通信局の送信間隔が
一定であるので、その同期状態はかなりの期間継続する
可能性がある。第８図にみられるように、２回目には、
通信局A101、B102、C104、E105が同期して送信142され
ている。The problem to be solved by the invention is that the interval between the communication stations only reflects the difference at the time of initial transmission, and the packet transmission timing is completely synchronized as shown in FIG. Sometimes. In this case, communication stations A101 and E105, communication station B102
C103 and D104 respectively use the same tokens 140 and 141, and packets are continuously transmitted on the transmission path. if,
As in the present example, if the transmission timing is synchronized on a LAN with tens or hundreds of communication stations, the communication may not be received due to a buffer shortage in the management communication station. To make matters worse, once in the synchronized state, since the transmission intervals of the respective communication stations are constant, the synchronized state may continue for a considerable period of time. As shown in Fig. 8, the second time,
Communication stations A101, B102, C104, and E105 are synchronously transmitted 142.
この結果として、管理通信局において網構成を正確に
把握できない場合が発生するという問題点を有する。As a result, there is a problem that the management communication station may not be able to accurately grasp the network configuration.
本発明はかかる点に鑑み、管理通信局が各通信局から
の網構成情報をもれなく受信し、網構成を正確に把握す
るすることを可能とする装置を提供することを目的とす
る。In view of the above point, the present invention has an object to provide an apparatus that enables a management communication station to receive network configuration information from each communication station without fail and to accurately grasp the network configuration.
課題を解決するための手段 前記目的を達成するために、第１の発明は、複数の通
信局をリング状に接続したリング型ローカルエリアネッ
トワーク（以下、リング型LANと略す。）において、各
通信局が、予め決められた送信間隔を保持する網構成情
報送信間隔保持手段と、偏差値を保持する偏差値保持手
段と、網構成情報送信間隔保持手段の持つ送信間隔と偏
差値保持手段のもつ値を演算する演算手段と、送信すべ
き網構成情報を保持する網構成情報保持手段と、前記演
算結果から得られた送信間隔毎に、網構成情報保持手段
の網構成情報をもったパケットを伝送路に送出するパケ
ット送出手段と、を備えていることを特徴としている。Means for Solving the Problems In order to achieve the above-mentioned object, a first aspect of the present invention is a ring-type local area network (hereinafter, abbreviated as ring-type LAN) in which a plurality of communication stations are connected in a ring shape. The station has a network configuration information transmission interval holding means for holding a predetermined transmission interval, a deviation value holding means for holding a deviation value, and a transmission interval and deviation value holding means for the network configuration information transmission interval holding means. A packet having the network configuration information of the network configuration information retaining unit for each of the transmission intervals obtained from the computation result, the network configuration information retaining unit for retaining the network configuration information to be transmitted, And a packet transmitting means for transmitting to the transmission path.
又、第２の発明は、複数の通信局をリング状に接続す
ると共に、少なくとも１つの管理通信局を設けたリング
型LANにおいて、前記管理通信局は、所定の送信間隔で
網構成情報を送信する通信局の構成の他に、他の通信局
から送られてくるパケットを受信する受信手段、所定の
時間内に受信したパケットの送信元名を収集する送信元
名収集手段、リング状に接続された全ての通信局のリス
トを保持している通信局リスト保持手段、所定時間内に
受信したパケットの送信局名を通信局リストと照合し所
定時間内にパケットを受信しなかった通信局を検索する
パケット未受信通信局検索手段、及び検索によって得ら
れた通信局に対し網構成情報の再送を要求する再送要求
手段を備えていることを特徴としている。A second aspect of the present invention is a ring LAN in which a plurality of communication stations are connected in a ring shape and at least one management communication station is provided, wherein the management communication station transmits network configuration information at a predetermined transmission interval. In addition to the configuration of the communication station, the receiving means for receiving the packet sent from another communication station, the source name collecting means for collecting the source name of the packet received within a predetermined time, and the ring-shaped connection The communication station list holding means that holds a list of all the communication stations that have been registered, and the communication stations that did not receive the packet within the predetermined time by comparing the transmission station name of the packet received within the predetermined time with the communication station list. It is characterized in that it is provided with a packet unreceived communication station searching means for searching and a retransmission requesting means for requesting the communication station obtained by the search to resend the network configuration information.
作用 第１の発明によれば、網構成情報送信間隔保持手段の
持つ予め決められたパケット送信間隔と、偏差値保持手
段のもつ値とを演算手段が演算し、パケット送出手段が
前記演算結果を用い、網構成情報保持手段が持つ自局の
網構成情報の送信間隔を制御することで、LAN内の複数
通信局から、パケットが同期して送信されることを防止
するものである。Operation According to the first aspect of the invention, the arithmetic means calculates the predetermined packet transmission interval of the network configuration information transmission interval holding means and the value of the deviation value holding means, and the packet sending means calculates the calculation result. By using the network configuration information holding means to control the transmission interval of the network configuration information of its own station, it is possible to prevent packets from being synchronously transmitted from a plurality of communication stations in the LAN.
又、第２の発明によれば、たとえ、パケットが同期に
近い状態で送信され、管理通信局での受信が失敗したと
しても、管理通信局では、予め決められた時間間隔内
に、パケット受信部が受信したパケットの送信元通信局
以外で、かつ、通信局情報保持手段が保持している通信
局リストに含まれている通信局に対して、パケット送信
制御手段が網構成情報要求を送信するようにする。Further, according to the second invention, even if the packet is transmitted in a state close to the synchronization and the reception at the management communication station fails, the management communication station receives the packet within a predetermined time interval. The packet transmission control means transmits a network configuration information request to a communication station other than the communication station that is the transmission source of the packet received by the section and included in the communication station list held by the communication station information holding means. To do so.
実施例 本発明に係るLANの網構成管理装置の一実施例を第１
図に基づき説明する。図（ａ）は通信局も構成、図
（ｂ）は管理通信局の構成を示している。なお、通信局
と管理通信局は第５図に示したようにリング型に接続さ
れている。First Embodiment One embodiment of a LAN network configuration management device according to the present invention
A description will be given based on the figure. The figure (a) has shown the structure of a communication station, and the figure (b) has shown the structure of a management communication station. The communication station and the management communication station are connected in a ring type as shown in FIG.
また、従来例と同一構成要素には同一番号を付す。更
に、説明を具体化するため、LANアクセス方式としてト
ークンリング方式を想定するが、LANアクセス方式は網
構成管理装置とは本質的に関係がない。The same components as those in the conventional example are designated by the same reference numerals. Furthermore, for the sake of concrete description, the token ring method is assumed as the LAN access method, but the LAN access method is essentially unrelated to the network configuration management device.
管理通信局を除く全ての通信局は、網構成情報送信間
隔保持部110、偏差値作成部１、演算部２、時間測定部1
11、網構成情報保持部113及びパケット送信制御部112か
ら成る。All communication stations except the management communication station have network configuration information transmission interval holding section 110, deviation value creation section 1, calculation section 2, and time measurement section 1
11, network configuration information holding unit 113 and packet transmission control unit 112.
網構成情報送信間隔保持部110は、予め決められた一
定のパケット送信間隔Tbaseを保持している。The network configuration information transmission interval holding unit 110 holds a predetermined fixed packet transmission interval Tbase.
偏差値保持部110は、各通信局に固有の値として偏差
値を保持している。偏差値としては、各通信局が乱数等
を利用して独自に生成してもよいし、LAN内の通信局か
ら配付されてもよいが、各通信局で必ず異なるLAN媒体
アクセスアドレスを利用する方法が簡単である。LAN媒
体アクセスアドレスを利用する場合、偏差値εｉは例え
ば次式で与えられるものを用いることができる。The deviation value holding unit 110 holds the deviation value as a value unique to each communication station. The deviation value may be independently generated by each communication station using random numbers, etc., or may be distributed from the communication station in the LAN, but each communication station always uses a different LAN medium access address. The method is simple. When the LAN medium access address is used, the deviation value ε i can be given by the following expression, for example.
演算部２は網構成情報送信部110のもつ網構成情報
と、偏差値保持部１のもつ偏差値とを例えば次式に従っ
て演算する。 The calculation unit 2 calculates the network configuration information of the network configuration information transmission unit 110 and the deviation value of the deviation value holding unit 1 according to the following equation, for example.
Ti＝Tbase＋εｉ …（２） このTiは各通信局毎に異なった固有の値である。各通
信局はこのTiという新たな送信間隔でパケットの送信を
行うことになる。Ti = Tbase + ε i (2) This Ti is a unique value that differs for each communication station. Each communication station will transmit packets at this new transmission interval called Ti.
時間測定部11は、例えばクロックパルス発生器とカウ
ンタとから成り、前記演算部２からTiが入力されると、
Tiで与えられる時間間隔でパケット送信制御部112に通
知を発する。The time measuring unit 11 is composed of, for example, a clock pulse generator and a counter, and when Ti is input from the arithmetic unit 2,
The packet transmission control unit 112 is notified at the time interval given by Ti.
網構成情報保持部113は送信すべき網構成情報を保持
している。The network configuration information holding unit 113 holds the network configuration information to be transmitted.
パケット送信制御部112は時間測定部111から通知があ
る毎に、網構成情報保持部113のもつ網構成情報をパケ
ットにのせて伝送器100へ送出する。Each time the packet transmission control unit 112 receives a notification from the time measurement unit 111, the packet transmission control unit 112 puts the network configuration information held by the network configuration information holding unit 113 on a packet and sends it to the transmitter 100.
一方、管理通信局は第１図（ｂ）に示すように上記し
た通信局の構成（網構成情報送信部110、偏差値作成部
１、演算部２、時間測定部111、パケット送信制御部11
2、網構成情報保持部113）の他に、パケット受信制御部
114、網構成推測部115、通信局情報保持部３、網構成情
報収集制御部４を備えている。On the other hand, as shown in FIG. 1B, the management communication station has the above-mentioned configuration of the communication station (network configuration information transmission section 110, deviation value creation section 1, calculation section 2, time measurement section 111, packet transmission control section 11).
2. In addition to the network configuration information holding unit 113), a packet reception control unit
114, a network configuration estimation unit 115, a communication station information holding unit 3, and a network configuration information collection control unit 4 are provided.
パケット受信制御部114は他の通信局が送信したパケ
ットを受信し、網構成情報を取り出して網構成情報収集
制御部４に送出する。The packet reception control unit 114 receives a packet transmitted by another communication station, extracts network configuration information, and sends it to the network configuration information collection control unit 4.
網構成推測部115は網構成情報収集制御部４を通じて
受け取った網構成情報から通信局間の接続状態を網構成
として把握する。The network configuration estimation unit 115 grasps the connection state between the communication stations as a network configuration from the network configuration information received through the network configuration information collection control unit 4.
通信局情報保持部３は、リング状伝送路100に対して
接続された全ての通信局の名簿に相当する情報、例えば
アドレス情報を保持している。The communication station information holding unit 3 holds information corresponding to a list of all communication stations connected to the ring-shaped transmission path 100, for example, address information.
網構成情報収集制御部４の働きについては後述する。 The operation of the network configuration information collection control unit 4 will be described later.
第２図は、全局の通信が同期していない場合の通信手
順を示す。黒丸印は時間測定部が送信要求を発生した時
点を示し、白丸印は送信要求がLANのアクセス制御手順
に従って送信された時点を示す。横方向の矢印は伝送路
への送信権の委譲の時間的推移を示す。各通信局の情報
送信間隔は、網構成情報送信間隔保持部110の持つ値
と、各通信局の媒体アクセスアドレスを利用した偏差値
とを演算した値Tra10、Trb11、Trc12、Trd13、Tre14が
用いられる。もっとも上記演算結果に更に各通信局間の
時間差を考慮して、Tra…Treを算出することも可能であ
る。FIG. 2 shows a communication procedure when communication of all stations is not synchronized. A black circle indicates the time when the time measuring unit issues a transmission request, and a white circle indicates the time when the transmission request is transmitted according to the access control procedure of the LAN. The horizontal arrow indicates the time transition of the transfer of the transmission right to the transmission path. The information transmission interval of each communication station is a value Tra10, Trb11, Trc12, Trd13, Tre14 which is a value calculated by a value held by the network configuration information transmission interval holding unit 110 and a deviation value using the medium access address of each communication station. To be However, it is also possible to calculate Tra ... Tre by further considering the time difference between the communication stations in the above calculation result.
この図の場合、各通信局が送信した全てのパケット
は、通信局間で適当な間隔をおいて送信されているの
で、管理通信局では図中21〜28に示すようにもれなく受
信され、網構成を把握することが可能となる。In the case of this figure, all packets transmitted by each communication station are transmitted at appropriate intervals between communication stations, so the management communication station receives all the packets as shown in 21-28 in the figure, and It is possible to grasp the configuration.
しかし、第３図に示すように複数の通信局の通信が同
期することもある。この場合、各通信局の送信間隔は、
偏差値保持部１のもつ偏差値を加味しているので個別に
異なっており、そのため、一時的に複数の通信局の通信
が同期することがあっても、次の送信時には同期が外れ
ている。However, as shown in FIG. 3, the communication of a plurality of communication stations may be synchronized. In this case, the transmission interval of each communication station is
Since the deviation values held by the deviation value holding unit 1 are taken into consideration, they are different from each other. Therefore, even if the communication of a plurality of communication stations may be temporarily synchronized, the synchronization is lost at the next transmission. .
次に、複数の通信局の通信が同期している場合の管理
通信局側の通信手順を第４図に基づいて説明する。第４
図（ａ）はパケットを受信する毎に行われる動作、第４
図（ｂ）は、所定の網構成情報送信間隔Tbaseとほぼ等
しい時間毎に行われる動作を示している。第３図に示す
ように通信局B102とC103とD104はそれぞれ、同一のトー
クン30を使用しているので、パケットは伝送路上で連続
して伝送されることになる。ここで、管理通信局のバッ
ファ不足のために通信局D104が送信した情報が受信され
ない場合を想定する。Next, the communication procedure on the management communication station side when the communication of a plurality of communication stations is synchronized will be described with reference to FIG. Fourth
FIG. 4A shows an operation performed every time a packet is received,
Part (b) of FIG. 10 shows an operation performed at a time substantially equal to the predetermined network configuration information transmission interval Tbase. As shown in FIG. 3, since the communication stations B102, C103, and D104 each use the same token 30, the packets are continuously transmitted on the transmission path. Here, it is assumed that the information transmitted by the communication station D104 is not received because the buffer of the management communication station is insufficient.
既述したように管理通信局は、予めLANに接続された
全ての通信局アドレスを通信局情報保持部３に持ってい
る。そこで、網構成情報を受信した場合には（ステップ
40）、網構成情報収集部４が送信元アドレスを識別し
（ステップ41）、通信局情報保持部に、情報を受信した
ことを記入する（ステップ42）。As described above, the management communication station has all the communication station addresses connected to the LAN in advance in the communication station information holding unit 3. Therefore, when the network configuration information is received (step
40), the network configuration information collection unit 4 identifies the source address (step 41), and writes in the communication station information holding unit that the information has been received (step 42).
そして、網構成情報送信間隔とほぼ等しい時間毎に
（ステップ43）、その時間内に受信した全ての通信局を
通信局情報を用いて調査する。まず、次の時間間隔内の
調査内容と区別するため、通信局情報をコピーする（ス
テップ44）。次に、通信局情報に記載された全ての通信
局に対して、網構成情報を受信したか否かを調べる（ス
テップ45、ステップ47）。もし、受信していない場合に
は、該当通信局に網構成情報要求をパケット送信制御部
112を通じて送る（ステップ46）。この例では、通信局D
104に対してのみ要求31が送られることになる。通信局D
104はこの通知を受けることにより、再度管理通信局106
に対して網構成情報を送信する。Then, at every time almost equal to the network configuration information transmission interval (step 43), all the communication stations received within that time are investigated using the communication station information. First, the communication station information is copied in order to distinguish it from the investigation content within the next time interval (step 44). Next, it is checked whether or not the network configuration information has been received for all the communication stations described in the communication station information (step 45, step 47). If not received, the packet transmission control unit sends a network configuration information request to the corresponding communication station.
Send through 112 (step 46). In this example, communication station D
Request 31 will only be sent to 104. Communication station D
Upon receiving this notification, 104 again manages communication station 106.
To the network configuration information.
管理通信局は、受信できなかった理由が、自局にある
のか、あるいは、他局の電源がオフになっていたとか伝
送路が切断されていたなど、他局側にあるのかを識別す
るために、受信できなかった通信局宛の送信要求に対す
る応答が一定の時間以内に戻って来るか否かを監視する
（ステップ48）。この後、網構成推測部115に、各局か
ら受信した網構成情報と受信できなかった通信局の情報
を送り、網構成を把握することができる（ステップ4
9）。The management communication station identifies whether the reason why it could not receive is that it is in its own station, or that it is on the other station's side, such as when the power of the other station was turned off or the transmission path was disconnected. First, it is monitored whether or not the response to the transmission request addressed to the communication station which cannot be received returns within a fixed time (step 48). After that, the network configuration estimation unit 115 is notified of the network configuration information received from each station and the information of the communication station that could not be received, and the network configuration can be grasped (step 4).
9).
なお、たとえ、複数局の送信タイミングが同期してい
るとしても、本実施例の場合、各通信局の送信間隔が個
別に異なっているので、次の送信では、各通信局が異な
る送信間隔33、34、35、36、37で送信することとなり、
同期状態は改善されている。Even if the transmission timings of a plurality of stations are synchronized, in the case of the present embodiment, the transmission intervals of the respective communication stations are individually different, so in the next transmission, the respective transmission intervals of the respective communication stations are different. , 34, 35, 36, 37 will be sent,
The sync status has been improved.
上記実施例では全ての通信局が偏差値保持部１をもっ
ていて、通信局毎に異なる送信間隔でパケットを送信す
るようにし、一方管理通信局は通信局情報保持部３と、
網構成情報収集制御部４とを有し、一定の時間間隔内に
受信したパケットの送信情報を通信局情報保持部のもっ
ている全ての通信局情報と対比してパケットを受信して
いない通信局に対してパケット送信の通知を行うように
しているが、通信局、管理通信局の一方が上記構成を備
え、他方は従来と同じ構成であってもよい。そのように
しても、管理通信局が各通信局からの網構成情報をもれ
なく受信して網構成を正確に把握できるといった本発明
の初期目的を達成できる。In the above embodiment, all the communication stations have the deviation value holding unit 1 so that the packets are transmitted at different transmission intervals for each communication station, while the management communication station is the communication station information holding unit 3.
A communication station that has a network configuration information collection control unit 4 and compares packet transmission information received within a fixed time interval with all communication station information held by the communication station information holding unit and does not receive packets. However, one of the communication station and the management communication station may have the above configuration, and the other may have the same configuration as the conventional one. Even in such a case, it is possible to achieve the initial object of the present invention in which the management communication station can receive the network configuration information from each communication station without exception and accurately grasp the network configuration.
発明の効果 以上説明したように、本発明によれば、各通信局間の
網構成情報送信タイミングが同期する場合を減少させ、
たとえ、タイミングが同期して、管理通信局が受信に失
敗しても、簡単な手順で管理通信局が各通信局からの網
構成情報をもれなく収集し、網構成を正確に把握するす
ることすることができる。Effects of the Invention As described above, according to the present invention, it is possible to reduce the case where the network configuration information transmission timings between communication stations are synchronized,
Even if the timing is synchronized and the management communication station fails to receive, the management communication station collects the network configuration information from each communication station without exception by a simple procedure, and accurately grasps the network configuration. be able to.
第１図（ａ）は本発明の一実施例としての通信局の構成
を示す図、第１図（ｂ）は管理通信局の構成を示す図、
第２図は網構成情報の通信手順において全局の通信が同
期していない場合を示す図、第３図は網構成情報の通信
手順において全局の通信が同期している場合を示す図、
第４図（ａ）（ｂ）は本発明の網構成管理装置の処理内
容を示すフローチャート、第５図は従来のリング型のシ
ステム構成図、第６図（ａ）（ｂ）は従来の網構成管理
装置の通信局及び管理通信局の構成図、第７図は従来の
網構成情報の通信手順例を示す図、第８図は従来の網構
成情報の通信手順において通信が同期している場合を示
す図である。 １……偏差値保持部、２……演算部、３……通信局情報
保持部、４……網構成情報収集部、100……伝送路、10
1,102,103,104,105……通信局、110……網構成情報送信
間隔保持部…、1111……時間測定部、112……パケット
送信制御部、113……網構成情報保持部、114……パケッ
ト受信制御部、115……網構成推測部。FIG. 1 (a) is a diagram showing a configuration of a communication station as an embodiment of the present invention, and FIG. 1 (b) is a diagram showing a configuration of a management communication station,
FIG. 2 is a diagram showing a case where communications of all stations are not synchronized in a communication procedure of network configuration information, and FIG. 3 is a diagram showing a case where communications of all stations are synchronized in a communication procedure of network configuration information,
4 (a) and (b) are flow charts showing the processing contents of the network configuration management device of the present invention, FIG. 5 is a conventional ring type system configuration diagram, and FIGS. 6 (a) and 6 (b) are conventional network configurations. FIG. 7 is a diagram showing the configuration of the communication station of the configuration management device and the management communication station, FIG. 7 is a diagram showing an example of a communication procedure of conventional network configuration information, and FIG. 8 is a communication in the communication procedure of conventional network configuration information. It is a figure which shows a case. 1 ... Deviation value storage unit, 2 ... Calculation unit, 3 ... Communication station information storage unit, 4 ... Network configuration information collection unit, 100 ... Transmission line, 10
1,102,103,104,105 ... Communication station, 110 ... Network configuration information transmission interval holding unit ..., 1111 ... Time measuring unit, 112 ... Packet transmission control unit, 113 ... Network configuration information holding unit, 114 ... Packet reception control unit, 115 …… Network configuration estimation unit.
Claims (3)
型ローカルエリアネットワーク（以下、リング型LANと
略す。）において、 各通信局が、 予め決められた送信間隔を保持する網構成情報送信間隔
保持手段と、 偏差値を保持する偏差値保持手段と、 網構成情報送信間隔保持手段の持つ送信間隔と偏差値保
持手段のもつ値を演算する演算手段と、 送信すべき網構成情報を保持する網構成情報保持手段
と、 前記演算結果から得られた送信間隔毎に、網構成情報保
持手段の網構成情報をもったパケットを伝送路に送出す
るパケット送出手段と、 を備えていることを特徴とするリング型LANの網構成管
理装置。1. In a ring-type local area network (hereinafter abbreviated as ring-type LAN) in which a plurality of communication stations are connected in a ring shape, each communication station transmits network configuration information having a predetermined transmission interval. Interval holding means, deviation value holding means for holding the deviation value, calculation means for calculating the transmission interval of the network configuration information transmission interval holding means and the value of the deviation value holding means, and network configuration information to be sent Network configuration information holding means, and packet sending means for sending a packet having the network configuration information of the network configuration information holding means to a transmission path at each transmission interval obtained from the calculation result. A ring-type LAN network configuration management device.
は、各通信局の通信局アドレスをもとに生成された値で
あることを特徴とする請求項１記載のリング型LANの網
構成管理装置。2. The ring LAN according to claim 1, wherein the value held by the deviation value holding means of each communication station is a value generated based on the communication station address of each communication station. Network configuration management device.
に、少なくも１つの管理通信局を設けたリング型LANに
おいて、 前記管理通信局は、所定の送信間隔で網構成情報を送信
する通信局の構成の他に、他の通信局から送られてくる
パケットを受信する受信手段、所定の時間内に受信した
パケットの送信元名を収集する送信元名収集手段、リン
グ状に接続された全ての通信局のリストを保持している
通信局リスト保持手段、所定時間内に受信したパケット
の送信局名を通信局リストと照合し所定時間内にパケッ
トを受信しなかった通信局を検索するパケット未受信通
信局検索手段、及び検索によって得られた通信局に対し
網構成情報の再送を要求する再送要求手段を備えている
ことを特徴とするリング型LANの網構成管理装置。3. A ring LAN in which a plurality of communication stations are connected in a ring shape and at least one management communication station is provided, wherein the management communication station transmits network configuration information at predetermined transmission intervals. In addition to the station configuration, receiving means for receiving packets sent from other communication stations, source name collecting means for collecting source names of packets received within a predetermined time, connected in a ring shape A communication station list holding means that holds a list of all communication stations, collates the transmission station name of the packet received within a predetermined time with the communication station list, and searches for communication stations that did not receive the packet within the predetermined time A network configuration management device for a ring LAN, comprising: a packet unreceived communication station search means; and a retransmission request means for requesting the communication station obtained by the search to retransmit the network configuration information.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16909890A JP2501367B2 (en) | 1990-06-27 | 1990-06-27 | Ring type local area network network management device |
| US08/266,614 US5580883A (en) | 1990-03-26 | 1994-06-28 | Aminobenzene compounds to prevent nerve cell degradation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16909890A JP2501367B2 (en) | 1990-06-27 | 1990-06-27 | Ring type local area network network management device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0457540A JPH0457540A (en) | 1992-02-25 |
| JP2501367B2 true JP2501367B2 (en) | 1996-05-29 |
Family
ID=15880279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16909890A Expired - Fee Related JP2501367B2 (en) | 1990-03-26 | 1990-06-27 | Ring type local area network network management device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2501367B2 (en) |
-
1990
- 1990-06-27 JP JP16909890A patent/JP2501367B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0457540A (en) | 1992-02-25 |
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