JPH0697940A - Lan connection processor - Google Patents
Lan connection processorInfo
- Publication number
- JPH0697940A JPH0697940A JP4128428A JP12842892A JPH0697940A JP H0697940 A JPH0697940 A JP H0697940A JP 4128428 A JP4128428 A JP 4128428A JP 12842892 A JP12842892 A JP 12842892A JP H0697940 A JPH0697940 A JP H0697940A
- Authority
- JP
- Japan
- Prior art keywords
- data
- channel
- lan
- lan connection
- processing 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.)
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- Small-Scale Networks (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はＬＡＮ接続処理装置に関
し、特にネットワークシステムにおいて、汎用計算機と
ＬＡＮを接続するＬＡＮ接続処理装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a LAN connection processing device, and more particularly to a LAN connection processing device for connecting a general-purpose computer and a LAN in a network system.
【０００２】[0002]
【従来の技術】従来の汎用計算機とＬＡＮを接続するＬ
ＡＮ接続処理装置ではＬＡＮと汎用計算機を接続すると
き、ＬＡＮ接続処理装置がもつ一つのネットワークアド
レスに対して一つのチャネルでＬＡＮと汎用計算機が接
続されていた。2. Description of the Related Art L for connecting a conventional general-purpose computer and a LAN
When the LAN and the general-purpose computer are connected in the AN connection processing device, the LAN and the general-purpose computer are connected by one channel for one network address of the LAN connection processing device.
【０００３】[0003]
【発明が解決しようとする課題】従来の汎用計算機とＬ
ＡＮを接続するＬＡＮ接続処理装置では、ＬＡＮ接続処
理装置のチャネルの負荷が高いときチャネルのデータ処
理能力が落ちデータ転送が非効率的になるという問題点
があった。The conventional general-purpose computer and L
In the LAN connection processing device for connecting the AN, there is a problem that when the load of the channel of the LAN connection processing device is high, the data processing capacity of the channel decreases and the data transfer becomes inefficient.
【０００４】[0004]
【課題を解決するための手段】第１の発明のＬＡＮ接続
処理装置は、ＬＡＮ接続処理装置が汎用計算機と複数の
チャネルで接続する手段、前記ＬＡＮ接続処理装置の複
数の前記チャネルの運用を制御する手段、前記汎用計算
機に接続した前記ＬＡＮ接続処理装置の複数の前記チャ
ネルのうち最も負荷の低いチャネルを選択する手段、前
記チャネルの入出力データを記憶する手段、前記ＬＡＮ
の入出力データを記憶する手段、前記ＬＡＮとデータを
送受する手段を有する。According to a first aspect of the present invention, there is provided a LAN connection processing device for connecting a LAN connection processing device to a general-purpose computer through a plurality of channels, and controlling the operation of the plurality of channels of the LAN connection processing device. Means, means for selecting a channel with the lowest load among the plurality of channels of the LAN connection processing device connected to the general-purpose computer, means for storing input / output data of the channel, and the LAN
And a means for transmitting and receiving data to and from the LAN.
【０００５】また、第２の発明のＬＡＮ接続処理装置
は、第１の発明のＬＡＮ接続処理装置に、複数のチャネ
ルのうち最も負荷の低いチャネルを選択後、前記選択し
たチャネルに障害が生じ、障害の生じたチャネルに転送
すべきデータが既に割り当てられていた時、他のチャネ
ルのうち最も負荷の低い正常なチャネルを選択し、障害
が生じたチャネルのデータを割当てなおし正常にデータ
を転送する手段を加える。The LAN connection processing device according to the second aspect of the invention is such that after the channel with the least load is selected from the plurality of channels by the LAN connection processing device of the first aspect, a failure occurs in the selected channel. When the data to be transferred has already been assigned to the failed channel, select the normal channel with the lowest load among other channels, reallocate the data of the failed channel, and transfer the data normally. Add means.
【０００６】さらに、第３の発明のＬＡＮ接続処理装置
は、第２の発明のＬＡＮ接続処理装置に、、データ転送
の高速化のため、ＬＡＮからの入力データを取り込んだ
後にチャネルを選択をするのではなく、ＬＡＮから入力
データを受けると同時にチャネルを選択する手段を加え
る。Furthermore, the LAN connection processing device of the third invention selects a channel after the LAN connection processing device of the second invention fetches input data from the LAN in order to speed up data transfer. Instead, a means for selecting a channel at the same time as receiving input data from the LAN is added.
【０００７】[0007]
【実施例】次に、本発明の実施例について図面を参照し
て説明する。Embodiments of the present invention will now be described with reference to the drawings.
【０００８】図１は第１の発明のＬＡＮ接続処理装置の
一実施例を示すブロック構成図である。FIG. 1 is a block diagram showing an embodiment of the LAN connection processing device of the first invention.
【０００９】図１において１は汎用計算機である。ＩＯ
チャネル１０１、１０２、１０３はＬＡＮ接続処理装置
２のチャネルアダプタ２０１、２０２、２０３とデータ
を送受する。ＬＡＮ接続処理装置２は汎用計算機１をＬ
ＡＮ３に接続し、チャネルアダプタ２０１、２０２、２
０３はＩＯチャネル１０１、１０２、１０３とデータや
チャネル状態データを送受する。チャネル選択部２１は
ＬＡＮ３からのデータを汎用計算機１へ渡すためにチャ
ネルアダプタ２０１、２０２、２０３から一つのチャネ
ルアダプタを選択する。状態制御部２２は各チャネルア
ダプタ２０１、２０２、２０３の運用状態を示すチャネ
ルアダプタ状態フラグとデータ転送の為の送信キューカ
ウンタをもち状態フラグの更新やデータ転送制御を行
う。データバッファ部２３は入出力バッファ部２４より
送られたデータを格納するためのチャネルアダプタ２０
１、２０２、２０３ごとの送信キューをもち、またチャ
ネルアダプタ２０１、２０２、２０３から送られてきた
データを入出力バッファ部２４に送るためのチャネルア
ダプタ２０１、２０２、２０３ごとの受信キューをも
つ。入出力バッファ部２４はＬＡＮ接続部２５からのデ
ータを格納するバッファとチャネル選択部２１からのデ
ータを格納するバッファをもつ。ＬＡＮ接続部２５はＬ
ＡＮ上のアドレスを保持し、ＬＡＮ３との接続を行い、
ＬＡＮ３とのデータ転送のとき状態制御部２２とデータ
転送の有無を報告する信号を出し、また入出力バッファ
２４の入出力を制御する。ＬＡＮ接続ケーブル２６はＬ
ＡＮ接続処理装置２のＬＡＮ接続部２５とＬＡＮ３を接
続するケーブルである。ここでいうＬＡＮ３にはＩＥＥ
Ｅ８０２．３準拠ＬＡＮ、ＩＥＥＥ８０２．５準拠ＬＡ
Ｎ、ＦＤＤＩ準拠ＬＡＮが相当する。In FIG. 1, reference numeral 1 is a general-purpose computer. IO
The channels 101, 102, and 103 exchange data with the channel adapters 201, 202, and 203 of the LAN connection processing device 2. The LAN connection processing device 2 sets the general-purpose computer 1 to L
Channel adapters 201, 202, 2 connected to AN3
03 transmits / receives data and channel state data to / from the IO channels 101, 102 and 103. The channel selection unit 21 selects one channel adapter from the channel adapters 201, 202, 203 in order to pass the data from the LAN 3 to the general-purpose computer 1. The state control unit 22 has a channel adapter state flag indicating the operating state of each channel adapter 201, 202, 203 and a transmission queue counter for data transfer, and updates the state flag and controls data transfer. The data buffer unit 23 is a channel adapter 20 for storing the data sent from the input / output buffer unit 24.
It has a transmission queue for each of 1, 202, 203, and also has a reception queue for each of the channel adapters 201, 202, 203 for transmitting the data transmitted from the channel adapters 201, 202, 203 to the input / output buffer unit 24. The input / output buffer unit 24 has a buffer for storing data from the LAN connection unit 25 and a buffer for storing data from the channel selection unit 21. LAN connection 25 is L
Holds the address on AN, connects to LAN3,
At the time of data transfer with the LAN 3, a signal for reporting the presence / absence of data transfer is issued to the state control unit 22 and the input / output of the input / output buffer 24 is controlled. LAN connection cable 26 is L
It is a cable that connects the LAN connection unit 25 of the AN connection processing device 2 and the LAN 3. The LAN3 referred to here is IEEE
LAN based on E802.3, LA based on IEEE802.5
N, FDDI compliant LAN corresponds.
【００１０】汎用計算機１はＩＯチャネル１０１、１０
２、１０３でＬＡＮ接続処理装置２のチャネルアダプタ
２０１、２０２、２０３とのデータの送受を行う。The general-purpose computer 1 has IO channels 101 and 10
2, 103 transmits / receives data to / from the channel adapters 201, 202, 203 of the LAN connection processing device 2.
【００１１】チャネルアダプタ２０１、２０２、２０３
が正常な場合は、データバッファ部２３は状態制御部２
２に格納されている各チャネルアダプタ２０１、２０
２、２０３の送信キューカウンタの値のうち最も小さい
値をもつ送信キューを選択し、入出力バッファ部２３よ
り送られたデータを前記選択したデータバッファ部２３
の送信キューに格納し、前記選択した送信キューの送信
キューカウンタの値を格納したデータの分だけ大きくす
る。チャネル選択部２１はデータバッファ部２３より送
られる前記送信キューのデータを取り出し、チャネルア
ダプタを選択しチャネルアダプタ２０１、２０２、２０
３にデータを送る。そして、データバッファ部２３は状
態制御部２２の送信キューカウンタの値を送りだしたデ
ータの分だけ小さくする。送信キューカウンタの値によ
り各チャネルアダプタ２０１、２０２、２０３にはデー
タ転送時均一的な負荷がかかる。Channel adapters 201, 202, 203
Is normal, the data buffer unit 23 determines that the state control unit 2
Each channel adapter 201, 20 stored in 2
The transmission queue having the smallest value among the values of the transmission queue counters 2, 203 is selected, and the data transmitted from the input / output buffer 23 is selected by the selected data buffer 23.
In the transmission queue, and the value of the transmission queue counter of the selected transmission queue is increased by the amount of the stored data. The channel selection unit 21 takes out the data of the transmission queue sent from the data buffer unit 23, selects a channel adapter, and selects the channel adapter 201, 202, 20.
Send data to 3. Then, the data buffer unit 23 reduces the value of the transmission queue counter of the state control unit 22 by the amount of the sent data. Depending on the value of the transmission queue counter, a uniform load is applied to each channel adapter 201, 202, 203 during data transfer.
【００１２】次に第２の発明のＬＡＮ接続処理装置につ
いて説明する。Next, the LAN connection processing device of the second invention will be described.
【００１３】図２は第２の発明のＬＡＮ接続処理装置の
一実施例を示すブロック構成図である。図２には図１に
バッファキュー制御部２７が加わっている。FIG. 2 is a block diagram showing an embodiment of the LAN connection processing device of the second invention. In FIG. 2, a buffer queue control unit 27 is added to FIG.
【００１４】チャネルアダプタ２０１、２０２、２０３
に故障したチャネルアダプタがある場合もしくはチャネ
ル選択後にチャネルアダプタが故障した場合、チャネル
アダプタより故障信号が状態制御部２２に通知されチャ
ネルアダプタ状態フラグに故障と登録される。データバ
ッファ部２３は状態制御部２２のチャネルアダプタ状態
フラグに故障と登録されたチャネルアダプタの送信キュ
ーにはデータを格納しない。バッファキュー制御部２７
は状態制御部２２のチャネルアダプタ状態フラグの故障
が登録されると同時に、故障と登録されたチャネルアダ
プタの送信キューを検索し送信キューが０でなければデ
ータバッファ部２３の故障したチャネルアダプタの送信
キューのデータを検索し、正常なチャネルアダプタの送
信キューカウンタの小さい方の送信キューにデータを登
録し直す。故障したチャネルアダプタが復旧したときは
チャネルアダプタより復旧が状態制御部２２に通知され
チャネルアダプタ状態フラグに正常と登録される。Channel adapters 201, 202, 203
If there is a failed channel adapter or if the channel adapter fails after selecting the channel, a failure signal is notified from the channel adapter to the status control unit 22 and the failure is registered in the channel adapter status flag. The data buffer unit 23 does not store data in the transmission queue of the channel adapter registered as a failure in the channel adapter state flag of the state control unit 22. Buffer queue control unit 27
At the same time that the failure of the channel adapter status flag of the status control unit 22 is registered, the transmission queue of the channel adapter registered as a failure is searched, and if the transmission queue is not 0, the transmission of the failed channel adapter of the data buffer unit 23 is performed. Search the queue data and re-register the data in the transmission queue with the smaller transmission queue counter of the normal channel adapter. When the failed channel adapter is restored, the channel controller notifies the state controller 22 of the restoration, and the channel adapter state flag is registered as normal.
【００１５】また、故障したチャネルアダプタよりチャ
ネル状態データによりＩＯチャネルに故障が報告され
る。ＩＯチャネル１０１、１０２、１０３がチャネルア
ダプタ２０１、２０２、２０３の前記チャネル状態デー
タによりチャネルアダプタ２０１、２０２、２０３の故
障報告を受けた場合は、汎用計算機１は故障したチャネ
ルアダプタに対応するＩＯチャネルへはデータを出さな
い。そして、汎用計算機１のコンソールにチャネルアダ
プタの故障を表示する。しかし、ＩＯチャネル１０１、
１０２、１０３がチャネルアダプタ２０１、２０２、２
０３の前記チャネル状態データによりチャネルアダプタ
２０１、２０２、２０３の復旧報告を受けた場合は、汎
用計算機１は復旧したチャネルアダプタに対応するＩＯ
チャネルへデータを出力する。Further, the faulty channel adapter reports a fault to the IO channel by the channel state data. When the IO channel 101, 102, 103 receives a failure report of the channel adapter 201, 202, 203 according to the channel status data of the channel adapter 201, 202, 203, the general-purpose computer 1 is the IO channel corresponding to the failed channel adapter. No data will be sent to. Then, the failure of the channel adapter is displayed on the console of the general-purpose computer 1. However, IO channel 101,
102 and 103 are channel adapters 201, 202 and 2
When the recovery report of the channel adapters 201, 202, 203 is received from the channel status data 03, the general-purpose computer 1 executes the IO corresponding to the recovered channel adapter.
Output data to channel.
【００１６】さらに第３の発明のＬＡＮ接続処理装置に
ついて説明する。Further, the LAN connection processing device of the third invention will be described.
【００１７】図３は第３の発明のＬＡＮ接続処理装置の
一実施例を示すブロック構成図である。図３には図２に
データ受信検出部２８が加わっている。FIG. 3 is a block diagram showing an embodiment of the LAN connection processing device of the third invention. In FIG. 3, the data reception detection unit 28 is added to FIG.
【００１８】ＬＡＮ接続処理装置２がＬＡＮ３よりデー
タを受信し汎用計算機１へデータを出力するとき、ＬＡ
Ｎ３からのデータをＬＡＮ接続部２５で受信すると直ち
にデータ受信検出部２８がデータ受信を検出し状態制御
部２２へＬＡＮ側データ受信信号を上げ、ＬＡＮ接続部
２５は入出力バッファ２４にデータを送りはじめる。前
記ＬＡＮ側データ受信信号を受けた状態制御部２２はデ
ータバッファ部２３の送信キューカウンタを調べ最も送
信キューカウンタの値の小さいチャネルアダプタを選択
する。データバッファ部２３は選択された送信キューに
入出力バッファ２４から送られてくるデータを格納す
る。When the LAN connection processor 2 receives data from the LAN 3 and outputs the data to the general-purpose computer 1, LA
As soon as the data from N3 is received by the LAN connection unit 25, the data reception detection unit 28 detects the data reception and raises the LAN side data reception signal to the state control unit 22, and the LAN connection unit 25 sends the data to the input / output buffer 24. Get started. Upon receiving the LAN side data reception signal, the state control unit 22 checks the transmission queue counter of the data buffer unit 23 and selects the channel adapter having the smallest transmission queue counter value. The data buffer unit 23 stores the data sent from the input / output buffer 24 in the selected transmission queue.
【００１９】[0019]
【発明の効果】以上説明したように、本発明のＬＡＮ接
続処理装置は、データ転送時にチャネルにかかる負荷を
複数のチャネルに分散でき、複数のチャネルを前記汎用
計算機とのデータ転送に利用することが可能となりデー
タ転送が効率的に行える。As described above, the LAN connection processing device of the present invention can disperse the load applied to a channel during data transfer to a plurality of channels and utilize the plurality of channels for data transfer with the general-purpose computer. This enables data transfer efficiently.
【図１】第１の発明のＬＡＮ接続処理装置の一実施例を
示すブロック構成図である。FIG. 1 is a block diagram showing an embodiment of a LAN connection processing device of the first invention.
【図２】第２の発明のＬＡＮ接続処理装置の一実施例を
示すブロック構成図である。FIG. 2 is a block configuration diagram showing an embodiment of a LAN connection processing device of the second invention.
【図３】第３の発明のＬＡＮ接続処理装置の一実施例を
示すブロック構成図である。FIG. 3 is a block diagram showing an embodiment of a LAN connection processing device of a third invention.
１ 汎用計算機 １０１、１０２、１０３ ＩＯチャネル ２ ＬＡＮ接続処理装置 ２０１、２０２、２０３ チャネルアダプタ ２１ チャネル選択部 ２２ 状態制御部 ２３ データバッファ部 ２４ 入出力バッファ部 ２５ ＬＡＮ接続部 ２６ ＬＡＮ接続ケーブル ２７ バッファキュー制御部 ２８ データ受信検出部 ３ ＬＡＮ 1 General-purpose computer 101, 102, 103 IO channel 2 LAN connection processing device 201, 202, 203 Channel adapter 21 Channel selection unit 22 State control unit 23 Data buffer unit 24 Input / output buffer unit 25 LAN connection unit 26 LAN connection cable 27 Buffer queue Control unit 28 Data reception detection unit 3 LAN
Claims (3)
続処理装置を設け、汎用計算機がＬＡＮ接続処理装置に
よってひとつのＬＡＮに接続しているネットワークシス
テムにおいて、前記ＬＡＮ接続処理装置が前記汎用計算
機と複数のチャネルで接続する手段と、前記ＬＡＮ接続
処理装置の複数の前記チャネルの運用を制御する手段
と、前記汎用計算機に接続した前記ＬＡＮ接続処理装置
の複数の前記チャネルのうち最も負荷の低いチャネルを
選択する手段と、前記チャネルの入出力データを記憶す
る手段と、前記ＬＡＮの入出力データを記憶する手段
と、前記ＬＡＮとデータを送受する手段とを備えること
を特徴とするＬＡＮ接続処理装置。1. In a network system in which a LAN connection processing device for connecting a LAN to a general-purpose computer is provided, and the general-purpose computer is connected to one LAN by the LAN connection processing device, the LAN connection processing device and the general-purpose computer are plural. , A means for controlling the operation of the plurality of channels of the LAN connection processing device, and a channel with the lowest load among the plurality of channels of the LAN connection processing device connected to the general-purpose computer. A LAN connection processing device comprising: a selecting unit, a unit for storing input / output data of the channel, a unit for storing input / output data of the LAN, and a unit for transmitting / receiving data to / from the LAN.
ャネルを選択後、前記選択したチャネルに障害が生じ、
障害の生じたチャネルに転送すべきデータが既に割り当
てられていた時、他のチャネルのうち最も負荷の低い正
常なチャネルを選択し、障害が生じたチャネルのデータ
を割当てなおし正常にデータを転送する手段を設けたこ
とを特徴とする請求項１記載のＬＡＮ接続処理装置。2. After selecting the least loaded channel of the plurality of channels, a failure occurs in the selected channel,
When the data to be transferred has already been assigned to the failed channel, select the normal channel with the lowest load among other channels, reallocate the data of the failed channel, and transfer the data normally. The LAN connection processing device according to claim 1, further comprising means.
チャネルを選択する手段を設けたことを特徴とする請求
項２記載のＬＡＮ接続処理装置。3. The LAN connection processing apparatus according to claim 2, further comprising means for selecting a channel at the same time as receiving input data from the LAN.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4128428A JPH0697940A (en) | 1992-05-21 | 1992-05-21 | Lan connection processor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4128428A JPH0697940A (en) | 1992-05-21 | 1992-05-21 | Lan connection processor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0697940A true JPH0697940A (en) | 1994-04-08 |
Family
ID=14984508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4128428A Withdrawn JPH0697940A (en) | 1992-05-21 | 1992-05-21 | Lan connection processor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0697940A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0785657A3 (en) * | 1995-12-14 | 1998-01-28 | Sun Microsystems, Inc. | Method and apparatus for distributing network bandwidth on a media server |
| US5862450A (en) * | 1995-12-14 | 1999-01-19 | Sun Microsytems, Inc. | Method and apparatus for delivering simultaneous constant bit rate compressed video streams at arbitrary bit rates with constrained drift and jitter |
| US6792482B2 (en) | 1999-06-24 | 2004-09-14 | Fujitsu Limited | Device controller and input/output system |
| JP2009169854A (en) * | 2008-01-18 | 2009-07-30 | Nec Corp | Computer system, fault handling method and fault handling program |
-
1992
- 1992-05-21 JP JP4128428A patent/JPH0697940A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0785657A3 (en) * | 1995-12-14 | 1998-01-28 | Sun Microsystems, Inc. | Method and apparatus for distributing network bandwidth on a media server |
| US5862450A (en) * | 1995-12-14 | 1999-01-19 | Sun Microsytems, Inc. | Method and apparatus for delivering simultaneous constant bit rate compressed video streams at arbitrary bit rates with constrained drift and jitter |
| US6792482B2 (en) | 1999-06-24 | 2004-09-14 | Fujitsu Limited | Device controller and input/output system |
| US7409472B2 (en) | 1999-06-24 | 2008-08-05 | Fujitsu Limited | Device controller and input/output system |
| JP2009169854A (en) * | 2008-01-18 | 2009-07-30 | Nec Corp | Computer system, fault handling method and fault handling program |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19990803 |