JPH03143134A - Communication control system in local area network system - Google Patents
Communication control system in local area network systemInfo
- Publication number
- JPH03143134A JPH03143134A JP28274289A JP28274289A JPH03143134A JP H03143134 A JPH03143134 A JP H03143134A JP 28274289 A JP28274289 A JP 28274289A JP 28274289 A JP28274289 A JP 28274289A JP H03143134 A JPH03143134 A JP H03143134A
- Authority
- JP
- Japan
- Prior art keywords
- bucket
- terminal
- packet
- procedure
- transmission control
- 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
- 238000004891 communication Methods 0.000 title claims description 7
- 238000000034 method Methods 0.000 claims abstract description 51
- 230000005540 biological transmission Effects 0.000 claims abstract description 29
- 230000007257 malfunction Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 240000007594 Oryza sativa Species 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Small-Scale Networks (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、ローカルエリアネットワークシステムにおけ
る通信制御方式に関する′。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a communication control method in a local area network system.
従来の技術
従来のローカルエリアネットワークシステムでは、端末
がブロードキャストパケットを受信したときに、そのパ
ケットを参照するか否かは各々の端末がサポートする伝
送制御手順に従っていた。2. Description of the Related Art In conventional local area network systems, when a terminal receives a broadcast packet, whether or not to refer to the packet is determined according to the transmission control procedure supported by each terminal.
発明が解決しようとする課題
上述した従来のローカルエリアネットワークシステムに
おける通信制御方式では、端末がブロードキャストパケ
ットを受信したときにそのパケットを参照するか否かは
各々の端末のサポートする伝送制御手順に従っているの
で、ネットワーク内の全端末が同一の伝送制御手順をサ
ポートしている様なローカルなシステムなら問題ないが
、端末数が多く、異伝送制御手順をサポートする端末同
志が混在するシステムにおいて、複数の手順でたまたま
同一の形式のブロードキャストパケットが規定されてい
る場合には、他の手順のブロードキャストパケットを受
信したときに、それを参照して誤動作する可能性がある
。Problems to be Solved by the Invention In the communication control method in the conventional local area network system described above, when a terminal receives a broadcast packet, whether or not to refer to the packet is determined according to the transmission control procedure supported by each terminal. Therefore, there is no problem in a local system where all terminals in the network support the same transmission control procedure, but in a system with a large number of terminals and a coexistence of terminals that support different transmission control procedures, multiple If a broadcast packet of the same format happens to be defined in a procedure, when a broadcast packet of another procedure is received, there is a possibility that the procedure will refer to it and malfunction.
本発明は従来の上記実情に鑑みてなされたものであり、
従って本発明の目的は、従来の技術に内在する上記課題
を解決することを可能とした新規な通信制御方式を提供
することにある。The present invention has been made in view of the above-mentioned conventional situation,
Therefore, an object of the present invention is to provide a novel communication control method that makes it possible to solve the above-mentioned problems inherent in the conventional technology.
課題を解決するための手段
上記目的を達成する為に、本発明に係るローカルエリア
ネットワークシステムにおける通信制御方式は、端末ア
ドレスフィールドの１部を端末がサポートする伝送制御
手順ＩＤ用に割りあて、ブロードキャストパケットを受
信したときに受信パケットの送信端末アドレスフィール
ドの伝送制御手順ＩＤが受信端末の伝送制御手順ＩＤと
異交っている場合には、受信端末はそのパケットを参照
しないように構成される。Means for Solving the Problems In order to achieve the above object, the communication control method in the local area network system according to the present invention allocates a part of the terminal address field for the transmission control procedure ID supported by the terminal, and performs broadcasting. When a packet is received, if the transmission control procedure ID in the transmitting terminal address field of the received packet is different from the transmission control procedure ID of the receiving terminal, the receiving terminal is configured not to refer to the packet.
実施例
次に、本発明をその好ましい一実施例について図面を参
照して具体的に説明する。Embodiment Next, a preferred embodiment of the present invention will be specifically explained with reference to the drawings.
第１図は本発明の一実施例を示す概念的ブロック構成図
である。FIG. 1 is a conceptual block diagram showing an embodiment of the present invention.
第１図を参照するに、端末１１〜１３は伝送制御手順Ａ
で通信し、端末１４〜１５は手順Ｂで通信すると想定す
る。Referring to FIG. 1, terminals 11 to 13 perform transmission control procedure A.
It is assumed that the terminals 14 and 15 communicate using procedure B.
端末１１が制御手順Ａに従ってパケットをブロードキャ
スト転送したときに、端末１２〜１５は、これを−旦受
信し、続いて受信パケットの送信アドレスフィールドの
手順ＩＤフィールドを調査する。ここで、前記手順ＩＤ
が自分の所有しているものと同一であればこれを正式な
パケットと認めて参照する（端末１２〜１３）が、異な
っていれば、他の手順をサポートする端末からのパケッ
トと判断して捨てる（端末１４〜１５）。When the terminal 11 broadcast-transfers a packet according to the control procedure A, the terminals 12 to 15 receive this once and then check the procedure ID field of the transmission address field of the received packet. Here, the procedure ID
If it is the same as the one you own, it is recognized as an official packet and referred to (terminals 12 to 13), but if it is different, it is determined that the packet is from a terminal that supports other procedures. Throw it away (terminals 14-15).
第２図に第１図で示した各端末１１〜１５の内部ハード
ウェア）Ｉ／Ｗのブロック構成を示す。FIG. 2 shows a block configuration of the internal hardware (I/W) of each terminal 11 to 15 shown in FIG. 1.
第２図を参照するに、回線インタフェース部２４は、ネ
ットワーク１０からブロードキャストのパケットを受信
すると、メモリ部２３にそのパケットを展開し、展開が
終了した時点で制御部２１に割込みをかける。制御部２
１は、これを受け、自端末アドレスレジスタ２２とメモ
リ２３に展開された受信パケットの送信端末アドレスフ
ィールドの伝送制御手順ＩＤ同志を比較し、両者が同一
であれば受信パケットをまさしく自分宛のパケットとみ
なし、これを参照するが、異なっていれば他の伝送制御
手順端末からのブロードキャストパケットと判断し、こ
れを捨てる。Referring to FIG. 2, when the line interface unit 24 receives a broadcast packet from the network 10, it expands the packet into the memory unit 23 and interrupts the control unit 21 when the expansion is completed. Control part 2
1 receives this and compares the transmission control procedure ID of the sending terminal address field of the received packet developed in the own terminal address register 22 and the memory 23, and if both are the same, it determines that the received packet is a packet addressed to itself. However, if it differs, it is determined to be a broadcast packet from another transmission control procedure terminal and is discarded.
伝送制御手順ｒＤを端末アドレスフィールドに割りあて
る方法の一例を第３図に示す。FIG. 3 shows an example of a method of allocating the transmission control procedure rD to the terminal address field.
第３図は４稲類の異なる伝送制御手順（Ａ、 ＢＣ，Ｄ
）で動作する端末同志が混在するＥｌｈｅｒｎｅｔシス
テムを想定しており、伝送制御手順ＩＤに２ｂｉｔが割
りあてられている。即ち、″ｏｏ” 、’“０１°゛“
１０”、“１１°゛をそれぞれ手順Ａ、Ｂ、Ｃ，Ｄに割
りあてている。Figure 3 shows different transmission control procedures for four rice species (A, BC, D).
), and 2 bits are allocated to the transmission control procedure ID. That is, "oo", "01°゛"
10" and "11°" are assigned to procedures A, B, C, and D, respectively.
発明の詳細
な説明したように、本発明のローカルエリアネットワー
クシステムにおける通信制御方式では端末アドレスフィ
ールドの１部を端末がサポートする伝送制御手順ＩＤ用
に割りあて、受信したブロードキャストパケットの送信
端末アドレスフィールドの伝送制御手順ＩＤが受信端末
の伝送制御手順ＩＤと異なっている場合には受信端末は
そのパケットを参照しない方式をとることにより、異伝
送制御手順をサポートする端末同志が混在するシステム
では、他の伝送制御手順をサポートしている端末からの
ブロードキャストメツセージを受信したときに、誤動作
する可能性を無くす事が出来る。As described in detail of the invention, in the communication control method in the local area network system of the present invention, a part of the terminal address field is allocated for the transmission control procedure ID supported by the terminal, and the transmitting terminal address field of the received broadcast packet is allocated to the transmission control procedure ID supported by the terminal. If the transmission control procedure ID of the packet differs from the transmission control procedure ID of the receiving terminal, the receiving terminal does not refer to that packet. This eliminates the possibility of malfunction when receiving a broadcast message from a terminal that supports the transmission control procedure.
伝送制御手順の見分けをつけるという意味では伝送制御
手順ＩＤ情報をアドレス部でなく、パケットのデータ部
に付加する方法も考えられるが、この場合にはその分だ
け一般データ領域が短くなる尚、アドレスフィールドに
伝送制御手順ＩＤを持たせることのその他の利点として
、１台の端末が複数の伝送制御手順をサポートするとき
に、アドレスの制御手順ＩＤを変えてやることによって
その端末アドレスを制御手順ごとに一意に決定すること
ができ、システムにおけるアドレス管理が容易であると
か、アドレスの重なりが発生する心配がないことがあげ
られる。In order to distinguish between transmission control procedures, it is possible to add the transmission control procedure ID information to the data section of the packet instead of the address section, but in this case, the general data area will be shortened accordingly. Another advantage of having a transmission control procedure ID in the field is that when one terminal supports multiple transmission control procedures, by changing the control procedure ID of the address, the terminal address can be changed for each control procedure. This means that addresses can be uniquely determined, address management in the system is easy, and there is no need to worry about overlapping addresses.
第１図は本発明の一実施到を示す概念的ブロック構成図
、第２図は本方式で動作する端末のＨ／ｌｌ１機能ブロ
ック構成例を示す図、第３図は伝送制御手順ＩＤを端末
アドレスフィールドに割りあてる方法の一例を示す図で
ある。FIG. 1 is a conceptual block diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing an example of the H/ll1 functional block configuration of a terminal operating in this method, and FIG. FIG. 3 is a diagram illustrating an example of a method of assigning to address fields.
Claims (1)
パケット内に割りあてられた送信端末アドレスフィール
ド及び受信端末アドレスフィールドにより送受信端末を
決定し、必要に応じてブロードキャスト転送が行えるロ
ーカルエリアネットワークシステムにおいて、端末アド
レスフィールドの１部をその端末がサポートする転送制
御手順ＩＤ用に割りあて、ブロードキャストパケツトを
受信したときに受信パケットの送信端末アドレスフィー
ルド内の伝送制御手順ＩＤが受信端末の伝送制御手順Ｉ
Ｄと異なつている場合には受信端末はそのパケットを参
照しないことを特徴とするローカルエリアネットワーク
システムにおける通信制御方式。Each terminal connected to the system has a separate address,
In a local area network system where sending and receiving terminals are determined by the sending terminal address field and receiving terminal address field allocated in a packet, and broadcast transfer can be performed as necessary, transfer in which a part of the terminal address field is supported by that terminal. Allocated for control procedure ID, and when a broadcast packet is received, the transmission control procedure ID in the sending terminal address field of the received packet is the transmission control procedure I of the receiving terminal.
A communication control method in a local area network system, characterized in that if the packet is different from D, the receiving terminal does not refer to the packet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28274289A JPH03143134A (en) | 1989-10-30 | 1989-10-30 | Communication control system in local area network system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28274289A JPH03143134A (en) | 1989-10-30 | 1989-10-30 | Communication control system in local area network system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03143134A true JPH03143134A (en) | 1991-06-18 |
Family
ID=17656462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28274289A Pending JPH03143134A (en) | 1989-10-30 | 1989-10-30 | Communication control system in local area network system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03143134A (en) |
-
1989
- 1989-10-30 JP JP28274289A patent/JPH03143134A/en active Pending
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