JP2000101589A - Dynamic domain name system - Google Patents
Dynamic domain name systemInfo
- Publication number
- JP2000101589A JP2000101589A JP26629398A JP26629398A JP2000101589A JP 2000101589 A JP2000101589 A JP 2000101589A JP 26629398 A JP26629398 A JP 26629398A JP 26629398 A JP26629398 A JP 26629398A JP 2000101589 A JP2000101589 A JP 2000101589A
- Authority
- JP
- Japan
- Prior art keywords
- address
- terminal
- server
- host
- host name
- 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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- Computer And Data Communications (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Small-Scale Networks (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ＤＨＣＰによるホ
ストアドレスの動的（適応的）な割当てとともに、ＤＮ
Ｓによるホストネームを用いた端末へのアクセスを可能
とするドメインネームシステムに関するものである。The present invention relates to a dynamic (adaptive) assignment of host addresses by DHCP,
The present invention relates to a domain name system that enables access to a terminal using a host name by S.
【０００２】[0002]
【従来の技術】イーサネット等によりパーソナルコンピ
ュータ等の端末間の通信を行うネットワーク（ＰＣ通信
システム）では、通常、ＩＰ（インターネットプロトコ
ル）通信が用いられるため、各端末にはホストアドレス
としてＩＰアドレスが割り付けられている。この時のＩ
Ｐアドレスとしては世界的にユニークなアドレス（グロ
ーバルＩＰアドレス）、あるいはローカルに使用可能な
アドレス（プライベートＩＰアドレス）が用いられ、近
年、グローバルＩＰアドレスの不足から、特に外部のネ
ットワークと接続しない閉域ネットワークあるいは実験
用のネットワークでは、そのネットワークで独立管理で
きるプライベートＩＰアドレスが用いられている。2. Description of the Related Art In a network (PC communication system) for performing communication between terminals such as personal computers by Ethernet or the like, an IP (Internet Protocol) communication is generally used. Therefore, an IP address is assigned to each terminal as a host address. Have been. I at this time
As the P address, a globally unique address (global IP address) or a locally usable address (private IP address) is used. In recent years, due to a shortage of global IP addresses, a closed network which is not particularly connected to an external network. Alternatively, in an experimental network, a private IP address that can be independently managed in the network is used.
【０００３】ＩＰアドレスの設定方法として、ユーザに
よるＩＰアドレス設定の負荷の軽減やＩＰアドレスの有
効利用あるいはアドレス管理の容易性から、ＤＨＣＰ
（Ｄｙｎａｍｉｃ Ｈｏｓｔ Ｃｏｎｆｉｇｕｒａｔｉ
ｏｎ Ｐｒｏｔｏｃｏｌ）によるＩＰアドレス割当てが
広く用いられている。[0003] As a method of setting an IP address, DHCP is used in order to reduce the load of setting an IP address by a user, to effectively use an IP address, or to facilitate address management.
(Dynamic Host Configurati
On-protocol) IP address assignment is widely used.
【０００４】これはＤＨＣＰサーバで予め複数のＩＰア
ドレス（ＩＰアドレス群）を用意（プール）しておき、
端末は立ち上げ時にＤＨＣＰサーバに対して自端末のＩ
Ｐアドレスを問合せ、ＤＨＣＰサーバはこれに対してＩ
Ｐアドレス群の中から一つのアドレスを選択して端末に
割り当てる方式である。動作中の端末にのみＩＰアドレ
スを割り付けるため、アドレスリソースの有効利用が可
能であり、また、サーバでアドレスを一括管理するた
め、ユーザの設定ミスやアドレス重複が発生し難い等の
利点がある。In this method, a plurality of IP addresses (IP address groups) are prepared (pooled) in advance by a DHCP server.
The terminal communicates with the DHCP server when
P address is queried and the DHCP server responds
In this method, one address is selected from a group of P addresses and assigned to a terminal. Since an IP address is assigned only to a terminal that is operating, effective use of address resources is possible, and since addresses are collectively managed by a server, there are advantages such that a user's setting mistake and address duplication hardly occur.
【０００５】また、ＩＰ通信ではＩＰアドレスを参照し
て通信を行うが、覚え難くタイプミスを誘い易い数字入
力を避けるため、各端末のホストアドレス（ＩＰアドレ
ス）の代わりにホストネームを用いて通信を行うドメイ
ンネームシステム（Ｄｏｍａｉｎ Ｎａｍｅ Ｓｙｓｔ
ｅｍ：ＤＮＳ）が広く用いられている。In the IP communication, communication is performed by referring to an IP address. However, in order to avoid entering numbers that are difficult to remember and cause typographical errors, communication is performed using a host name instead of the host address (IP address) of each terminal. Domain name system (Domain Name System)
em: DNS) is widely used.
【０００６】これはドメインネームサーバ（以後、ＤＮ
Ｓサーバと呼ぶ。）がホストアドレスとホストネームと
の対応付けを管理し、端末が通信を行う時にはこのＤＮ
Ｓサーバにアクセスすることにより、ホストネームから
ホストアドレスを得る仕組みである。[0006] This is a domain name server (hereinafter, DN
Call it an S server. ) Manages the association between the host address and the host name, and when the terminal performs communication, this DN
This is a mechanism for obtaining the host address from the host name by accessing the S server.
【０００７】近年、通信回線を利用したＰＣ通信システ
ムが開発されており、一般家庭あるいはリモートオフィ
スを結んでＬＡＮ環境を利用可能である。ユーザ宅内
に、通信回線とイーサネットインタフェースとの変換を
行うエッジ装置を設置し、センタ側ではエッジ装置と対
向する装置（センタ装置）を設置することにより、エッ
ジ装置配下の端末間で通信が可能である。In recent years, a PC communication system using a communication line has been developed, and a LAN environment can be used by connecting a general home or a remote office. By installing an edge device that converts between a communication line and an Ethernet interface in the user's home, and installing a device (center device) facing the edge device on the center side, communication between terminals under the edge device is possible. is there.
【０００８】この時、エッジ装置で端末のＭＡＣアドレ
スを検出してセンタ側の管理サーバに通知し、管理サー
バではこれに基づいてグルーピングテーブルをセンタ装
置に転送することにより、センタ装置ではＭＡＣアドレ
スによるパケットフィルタリングを行い、同一グループ
内での通信のみを可能とするグループ通信システムも実
現されている（例えば、太田、森崎、辻「地域情報ネッ
トワークシステムの提案」信学技報、ＯＣＳ９５−９
５、Ｆｅｂ．１９９６、あるいは入江、佐野、太田、首
藤、辻「地域情報ネットワークシステム用多重化ブルー
タとその特性」信学会論文誌Ｂ−Ｉ、Ｖｏｌ．Ｊ８１−
Ｂ−Ｉ、Ｎｏ．７、Ｊｕｌｙ１９９８、ｐｐ．４３２−
４３９、等）。At this time, the edge device detects the MAC address of the terminal and notifies the center side of the management server, and the management server transfers the grouping table to the center device based on the MAC address. A group communication system that performs packet filtering and enables only communication within the same group has been realized (for example, Ota, Morisaki, Tsuji “Proposal of Regional Information Network System” IEICE Technical Report, OCS95-9)
5, Feb. 1996, or Irie, Sano, Ota, Shuto, Tsuji, "Multiplexing Brouters for Regional Information Network Systems and Their Characteristics," IEICE Transactions on Information Engineering, BI, Vol. J81-
BI, No. 7, July 1998, pp. 139-143. 432-
439, etc.).
【０００９】図１は従来のドメインネームシステムの一
例を示すもので、図中、１−１，１−２，……１−ｎは
端末、２−１，２−２，……２−ｎはエッジ装置、３は
通信回線（アクセス系）、４はセンタ装置、５はＬＡ
Ｎ、６は管理サーバ、７はＤＨＣＰサーバ、８はＤＮＳ
サーバである。FIG. 1 shows an example of a conventional domain name system, in which 1-1, 1-2,... 1-n are terminals, 2-1, 2-2,. Is an edge device, 3 is a communication line (access system), 4 is a center device, 5 is LA
N and 6 are management servers, 7 is a DHCP server, 8 is DNS
Server.
【００１０】本例では、管理サーバ６、ＤＨＣＰサーバ
７及びＤＮＳサーバ８を分離した構成としているが、こ
れは機能分担を分かり易くするためであり、これらを同
一サーバ（ワークステーション）上にインプリメン卜
し、動作させることも可能である。In this embodiment, the management server 6, the DHCP server 7, and the DNS server 8 are separated from each other. This is to make it easier to understand the division of functions, and they are implemented on the same server (workstation). It is also possible to operate it.
【００１１】以下、このシステムの動作をその構成とと
もに説明する。Hereinafter, the operation of this system will be described together with its configuration.
【００１２】まず、端末間での通信（イーサネットパケ
ットの送受信）を行う仕組みについて説明する。First, a mechanism for performing communication (transmission and reception of Ethernet packets) between terminals will be described.
【００１３】エッジ装置２−１〜２−ｎはユーザ宅に設
置され、ユーザにイーサネットインタフェースを提供し
て端末１−１〜１−ｎを収容するとともに、イーサネッ
トインタフェースとアクセス系３のインタフェースとの
変換を行う機能を有し、端末１−１〜１−ｎからのイー
サネットパケットをアクセス系３を経由してセンタ側に
転送する。また、配下の端末１−１〜１−ｎのＭＡＣア
ドレスを検出し、管理サーバ６に通知する機能を有して
いる。The edge devices 2-1 to 2-n are installed in the user's home, provide an Ethernet interface to the user to accommodate the terminals 1-1 to 1-n, and connect the Ethernet interface to the interface of the access system 3. It has a function of performing conversion and transfers Ethernet packets from the terminals 1-1 to 1-n to the center side via the access system 3. Further, it has a function of detecting the MAC addresses of the subordinate terminals 1-1 to 1-n and notifying the management server 6.
【００１４】アクセス系３は、ユーザ宅とセンタ装置４
とを光ファイバ等で接続するシステムであり、ユーザ側
のＯＮＵ（光終端装置）、センタ側のＳＬＴ（加入者終
端装置）、ＯＮＵとＳＬＴとを結ぶ光ファイバ等（いず
れも図示せず）により構成される。The access system 3 includes a user home and a center device 4
Is connected by an optical fiber or the like, and is connected by an ONU (optical terminating device) on the user side, an SLT (subscriber terminating device) on the center side, an optical fiber connecting the ONU and the SLT (neither is shown). Be composed.
【００１５】センタ装置４は、エッジ装置２−１〜２−
ｎからの信号とイーサネットパケットとの変換処理を行
うとともに、イーサネットパケットのＭＡＣアドレスに
基づいてフィルタリングを行う。また、センタ側のＬＡ
Ｎ５と接続され、エッジ装置２−１〜２−ｎ間、エッジ
装置２−１〜２−ｎとセンタ側のＬＡＮ５との間のイー
サネットパケットのブリッジ処理を行う。The center device 4 includes edge devices 2-1 to 2-
In addition to performing a conversion process between the signal from n and the Ethernet packet, filtering is performed based on the MAC address of the Ethernet packet. Also, LA on the center side
N5 is connected to the edge device 2-1 to 2-n, and performs bridge processing of Ethernet packets between the edge devices 2-1 to 2-n and the LAN 5 on the center side.
【００１６】管理サーバ６は、グループ情報の管理を行
うものであり、エッジ装置２−１〜２−ｎから通知され
る端末のＭＡＣアドレスをグルーピングし、その情報を
センタ装置４に転送する。予め登録されたユーザのグル
ープ情報により、同一グループのエッジ装置配下の端末
のＭＡＣアドレスを同一グループのアドレステーブルと
して管理する。The management server 6 manages group information, groups the MAC addresses of the terminals notified from the edge devices 2-1 to 2-n, and transfers the information to the center device 4. The MAC addresses of the terminals under the edge device of the same group are managed as an address table of the same group based on the group information of the user registered in advance.
【００１７】ＤＨＣＰサーバ７は、端末１−１〜１−ｎ
からの要求に応じてＩＰアドレス群の中から一つのアド
レスを動的に割り当てる。ＤＮＳサーバ８は、ＩＰアド
レスとホストネームとの対応付けを管理する。The DHCP server 7 has terminals 1-1 to 1-n
One of the IP address groups is dynamically assigned in response to a request from the IP address group. The DNS server 8 manages the correspondence between the IP address and the host name.
【００１８】このような構成及び動作により、同一グル
ープに属する端末間でイーサネットパケットの送受信が
可能となる。With such a configuration and operation, it is possible to transmit and receive the Ethernet packet between the terminals belonging to the same group.
【００１９】次に、端末にＩＰアドレス及びホストネー
ムを割当て、ＩＰ通信を行う仕組みについて説明する。Next, a mechanism for allocating an IP address and a host name to a terminal and performing IP communication will be described.
【００２０】例えば、ＤＨＣＰ７サーバにおいてＩＰア
ドレス群としてＩＰ−１１〜ＩＰ−１ｍがプールされて
おり、端末１−１に対するホストアドレスとしてＩＰ−
１１、端末１−２に対するホストアドレスとしてＩＰ−
１２を割り当てるとする。また、端末１−１にはホスト
ネームａ１．ａｒｅａ−ａ．ｊｐ、端末１−２にはホス
トネームａ２．ａｒｅａ−ａ．ｊｐが設定され、ＤＮＳ
サーバ８にＩＰアドレスとの対応が登録されているとす
る。ホストネームのうち、ａｒｅａ−ａ．ｊｐはグルー
プあるいは地域等によって共通に設定され、個々の端末
は先頭のａ１あるいはａ２で設定される。For example, in the DHCP7 server, IP-11 to IP-1m are pooled as an IP address group, and an IP-address is used as a host address for the terminal 1-1.
11. IP-host address for terminal 1-2
Suppose that 12 is allocated. The terminal 1-1 has the host name a1. area-a. jp, the terminal 1-2 has the host name a2. area-a. jp is set, DNS
It is assumed that the correspondence with the IP address is registered in the server 8. Of the host names, area-a. jp is commonly set by a group or a region, and each terminal is set by a1 or a2 at the head.
【００２１】ここで、端末１−１から端末１−２に対し
て通信を行う場合、端末１−１は端末１−２のホストネ
ームａ２．ａｒｅａ−ａ．ｊｐをキーとしてＤＮＳサー
バ８に問い合わせる。ＤＮＳサーバ８は端末１−２のホ
ストアドレスＩＰ−１２を端末１−１に応答する。その
結果、端末１−１は宛先ＩＰアドレスであるＩＰ−１２
を知ることができ、これを用いてＩＰ通信が可能とな
る。この他に、イーサネットアドレス解決の処理（ＡＲ
Ｐ：Ａｄｄｒｅｓｓ Ｒｅｓｏｌｕｔｉｏｎ Ｐｒｏｔ
ｏｃｏｌ）等が行われるが、本発明と直接関係しないた
め説明を省略する。Here, when communication is performed from the terminal 1-1 to the terminal 1-2, the terminal 1-1 uses the host name a2. area-a. Inquire the DNS server 8 using jp as a key. The DNS server 8 responds to the terminal 1-1 with the host address IP-12 of the terminal 1-2. As a result, the terminal 1-1 receives the IP-12, which is the destination IP address.
, And IP communication can be performed using this. In addition to this, Ethernet address resolution processing (AR
P: Address Resolution Prot
ocol) and the like, but they are not directly related to the present invention, and the description is omitted.
【００２２】[0022]
【発明が解決しようとする課題】このように、従来のシ
ステムでは、ＤＨＣＰサーバとＤＮＳサーバが独立して
おり、独自に端末情報の管理を行っていたため、両者を
利用することは困難であった。即ち、ＤＮＳサーバでは
固定的にホストネームとホストアドレスとを対応付けて
いるため、ＤＨＣＰサーバでホストアドレスを変化させ
ると通信ができなくなるという問題があった。そのた
め、ＤＨＣＰサーバを適用するためには端末のホストア
ドレスの割当てを常に一定にする必要が有り、ＤＨＣＰ
のメリットであるアドレスリソースの有効利用が図れな
いという問題があった。As described above, in the conventional system, since the DHCP server and the DNS server are independent and independently manage the terminal information, it is difficult to use both of them. . That is, since the DNS server fixedly associates the host name with the host address, if the host address is changed by the DHCP server, communication becomes impossible. Therefore, in order to apply the DHCP server, it is necessary to make the assignment of the host address of the terminal always constant.
However, there is a problem in that the effective use of address resources cannot be achieved.
【００２３】本発明の目的は、ＤＨＣＰによるホストア
ドレスの割当てによるアドレスリソースの有効利用を図
りつつ、ＤＮＳによるホストネームを用いた端末間アク
セスを可能とするダイナミックドメインネームシステム
を提供することにある。An object of the present invention is to provide a dynamic domain name system that enables terminal-to-terminal access using a host name by DNS while effectively using address resources by allocating host addresses by DHCP.
【００２４】[0024]
【課題を解決するための手段】本発明では、前記目的を
達成するため、複数の端末と、各端末の固有アドレスを
管理する管理サーバと、端末を収容し該端末の固有アド
レスを管理サーバに通知するエッジ装置と、予め用意し
たホストアドレス群の中から一つのホストアドレスを端
末に動的に割り当てるＤＨＣＰサーバと、ホストアドレ
スとホストネームとを対応付けるＤＮＳサーバとを備
え、管理サーバで端末の固有アドレスとホストネームと
を対応付け、固有アドレスをＤＨＣＰサーバに通知する
とともに、固有アドレスとホストネームとの対応をＤＮ
Ｓサーバに通知し、ＤＨＣＰサーバで端末に割り当てた
ホストアドレスと該端末の固有アドレスとの対応をＤＮ
Ｓサーバに通知し、ＤＮＳサーバで通知情報に基づいて
端末のホストアドレスとホストネームとを対応付けるこ
とを特徴とする。According to the present invention, in order to achieve the above object, a plurality of terminals, a management server for managing a unique address of each terminal, a terminal for accommodating the terminal and a unique address of the terminal are stored in the management server. An edge device for notifying, a DHCP server for dynamically assigning one host address from a group of host addresses prepared in advance to the terminal, and a DNS server for associating the host address with the host name are provided. The address and the host name are associated with each other, and the unique address is notified to the DHCP server.
Notify the S server, and use the DN to determine the correspondence between the host address assigned to the terminal by the DHCP server and the unique address of the terminal.
The S server is notified, and the DNS server associates the host address of the terminal with the host name based on the notification information.
【００２５】従来の技術とは、管理サーバで端末の固有
アドレスとホストネームとを対応付け、該データをＤＨ
ＣＰサーバ及びＤＮＳサーバに通知し、ＤＨＣＰサーバ
で割り当てた端末のホストアドレスと端末の固有アドレ
スとの対応をＤＮＳサーバに通知し、ＤＮＳサーバで通
知情報に基づいて端末のホストアドレスとホストネーム
とを対応付ける点が異なっている。The conventional technique is that a management server associates a unique address of a terminal with a host name, and stores the data in a DH.
Notify the CP server and the DNS server, notify the DNS server of the correspondence between the terminal host address assigned by the DHCP server and the unique address of the terminal, and notify the DNS server of the terminal host address and host name based on the notification information. The correspondence is different.
【００２６】[0026]
【発明の実施の形態】図２は本発明のシステムの実施の
形態の一例を示すもので、図中、従来例と同一構成部分
は同一符号をもって表す。即ち、１−１〜１−ｎは端
末、２−１〜２−ｎはエッジ装置、３は通信回線（アク
セス系）、４はセンタ装置、５はＬＡＮ、１１は管理サ
ーバ、１２はＤＨＣＰサーバ、１３はＤＮＳサーバであ
る。FIG. 2 shows an embodiment of the system according to the present invention. In the drawing, the same components as those of the conventional example are denoted by the same reference numerals. That is, 1-1 to 1-n are terminals, 2-1 to 2-n are edge devices, 3 is a communication line (access system), 4 is a center device, 5 is a LAN, 11 is a management server, and 12 is a DHCP server. , 13 are DNS servers.
【００２７】本システムでは、従来例と異なり、管理サ
ーバ、ＤＨＣＰサーバ及びＤＮＳサーバにおいて端末の
ＭＡＣアドレステーブルを共有する構成となっている。In this system, unlike the conventional example, the management server, the DHCP server, and the DNS server share the MAC address table of the terminal.
【００２８】以下、本システムの動作をその構成ととも
に説明する。Hereinafter, the operation of the present system and its configuration will be described.
【００２９】例えば、端末１−１のＭＡＣアドレスをＭ
ＡＣ−１１、端末１−２のＭＡＣアドレスをＭＡＣ−１
２とする。端末の立ち上げ時、エッジ装置２−１〜２−
ｎでは端末のＭＡＣアドレスを検出し、管理サーバ１１
に通知する（１）。通知手段としては、一般的なＳＮＭ
Ｐプロトコル等が使用可能である。For example, if the MAC address of the terminal 1-1 is M
AC-11, the MAC address of the terminal 1-2 is MAC-1
Let it be 2. When the terminal is started, the edge devices 2-1 to 2-
n, the MAC address of the terminal is detected and the management server 11
(1). As a notification means, a general SNM
A P protocol or the like can be used.
【００３０】管理サーバ１１では、通知されたＭＡＣア
ドレスに対してホストネームを割り当てる。この時、ホ
ストネームのうち、２番目の区切り以降のａｒｅａ−
ａ．ｊｐはグループあるいは地域によって固定的に設定
され、先頭のａ１あるいはａ２は自動的に割り付ける。
例えば、予めあるグループに対してはホストネームの先
頭にａＸ（Ｘは番号）を割り当てる設定とし、Ｘに追加
された順に数字を割り当て、２番目の区切り以降のａｒ
ｅａ−ａ．ｊｐと合せてホストネームとすることにより
自動割当てを行う。The management server 11 assigns a host name to the notified MAC address. At this time, of the host name, the area-
a. jp is fixedly set depending on the group or region, and the leading a1 or a2 is automatically assigned.
For example, a setting is made such that aX (X is a number) is assigned to the head of a host name for a certain group in advance, numbers are assigned in the order of addition to X, and ar after the second delimiter is assigned.
ea-a. Automatic assignment is performed by setting a host name together with jp.
【００３１】管理サーバ１１は、追加設定された端末の
ＭＡＣアドレスとホストネームをＤＮＳサーバ１３に通
知し（２）、ＤＮＳサーバ１３では、端末１−１のホス
トネームａ１．ａｒｅａ−ａ．ｊｐ及び端末１−２のホ
ストネームａ２．ａｒｅａ−ａ．ｊｐと、端末１−１及
び１−２のＭＡＣアドレスとの対応関係をテーブルとし
て保持する。The management server 11 notifies the DNS server 13 of the newly set MAC address and host name of the terminal (2), and the DNS server 13 sends the host name a1. area-a. jp and the host name of the terminal 1-2 a2. area-a. jp and the correspondence between the MAC addresses of the terminals 1-1 and 1-2 are held as a table.
【００３２】また、管理サーバ１１は追加設定された端
末のＭＡＣアドレスをＤＨＣＰサーバ１２に通知する
（３）。ＤＨＣＰサーバ１２では端末のＭＡＣアドレス
を同様に保持しておき、端末からアドレス割当て要求を
受けるとプールされているＩＰアドレス群の中から一つ
を選択して割当て、同時に割当てたＩＰアドレスとＭＡ
Ｃアドレスとの対応をＤＮＳサーバ１３に通知する
（４）。Further, the management server 11 notifies the DHCP server 12 of the additionally set terminal MAC address (3). The DHCP server 12 similarly holds the MAC address of the terminal, and upon receiving an address assignment request from the terminal, selects and assigns one from the pooled IP address group, and simultaneously assigns the assigned IP address and MA.
The correspondence with the C address is notified to the DNS server 13 (4).
【００３３】ＤＮＳサーバ１３では通知情報に基づい
て、ＭＡＣアドレスから該当の端末に対するホストネー
ムとＩＰアドレスとの対応を設定する。The DNS server 13 sets the correspondence between the host name and the IP address for the corresponding terminal from the MAC address based on the notification information.
【００３４】上記シーケンスの具体例を図３に示す。こ
こでは端末１−２（ａ２）から端末１−１（ａ１）に対
する通信開始の場合の例を示している。FIG. 3 shows a specific example of the above sequence. Here, an example in the case of starting communication from the terminal 1-2 (a2) to the terminal 1-1 (a1) is shown.
【００３５】まず、端末ａ１及び端末ａ２の最初の立ち
上げ時に各々を収容するエッジ装置は、端末ａ１及び端
末ａ２のＭＡＣアドレスを管理サーバ１１に通知する。
管理サーバ１１では、通知に基づいて新規追加の端末と
認識し、前記のように予め登録されているホストネーム
の設定方法に従って、端末ａ１及び端末ａ２に対するホ
ストネーム（ａ１．ａｒｅａ−ａ．ｊｐ及びａ２．ａｒ
ｅａ−ａ．ｊｐ）を割り当てる。管理サーバ１１は、こ
のＭＡＣアドレスとホストネームとの対応関係をＤＮＳ
サーバ１３に通知する。また、ＭＡＣアドレスをＤＨＣ
Ｐサーバ１２に通知する。First, when the terminals a1 and a2 are first started up, the edge device accommodating each of them notifies the management server 11 of the MAC addresses of the terminals a1 and a2.
The management server 11 recognizes the terminal as a newly added terminal based on the notification, and according to the host name setting method registered in advance as described above, the host names (a1.area-a.jp and host1) for the terminals a1 and a2. a2.ar
ea-a. jp). The management server 11 stores the correspondence between the MAC address and the host name in DNS.
Notify the server 13. Also, the MAC address is set to DHC
Notify the P server 12.
【００３６】端末ａ１がその後のリブートまたは立ち上
げ時にＤＨＣＰサーバ１２に対して自端末のＩＰアドレ
ス割当て要求を送信し、ＤＨＣＰサーバ１２はこれに対
してプールされているＩＰアドレス群の中から一つ（Ｉ
Ｐ−１１）を回答する。ＤＨＣＰサーバ１２は端末ａ１
のＭＡＣアドレス（ＭＡＣ−１１）と割当てＩＰアドレ
ス（ＩＰ−１１）との対応データをＤＮＳサーバ１３に
通知する。ＤＮＳサーバ１３では、通知情報に基づいて
ＭＡＣアドレスから端末ａ１のホストネームａ１．ａｒ
ｅａ−ａ．ｊｐに対するＩＰアドレスをＩＰ−１１に設
定更新する。The terminal a1 transmits its own IP address assignment request to the DHCP server 12 at the time of the subsequent reboot or startup, and the DHCP server 12 responds to the request from the pooled IP address group by one. (I
Answer P-11). The DHCP server 12 is a terminal a1
The DNS server 13 is notified of the corresponding data between the MAC address (MAC-11) and the assigned IP address (IP-11). In the DNS server 13, the host name a1. ar
ea-a. The IP address for jp is updated to IP-11.
【００３７】次に、端末ａ２がその後のリブートまたは
立ち上げ時にＤＨＣＰサーバ１２に対して自端末のＩＰ
アドレス割当て要求を送信し、ＤＨＣＰサーバ１２はこ
れに対してプールされているＩＰアドレス群の中から一
つ（ＩＰ−１２）を回答する。ＤＨＣＰサーバ１２は端
末ａ２のＭＡＣアドレス（ＭＡＣ−１２）と割当てＩＰ
アドレス（ＩＰ−１２）との対応データをＤＮＳサーバ
１３に通知する。ＤＮＳサーバ１３では、通知情報に基
づいてＭＡＣアドレスから端末ａ２のホストネームａ
２．ａｒｅａ−ａ．ｊｐに対するＩＰアドレスをＩＰ−
１２に設定更新する。Next, when the terminal a2 reboots or starts up, the terminal a2 sends its own IP address to the DHCP server 12.
The DHCP server 12 transmits an address assignment request, and replies one (IP-12) from the pooled IP address group to the request. The DHCP server 12 determines the MAC address (MAC-12) of the terminal a2 and the assigned IP address.
The DNS server 13 is notified of data corresponding to the address (IP-12). In the DNS server 13, the host name a of the terminal a2 is obtained from the MAC address based on the notification information.
2. area-a. jp to the IP address IP-
Update the setting to 12.
【００３８】なお、上記立ち上げ順序は、端末ａ１及び
端末ａ２のどちらが先でも良い。Note that, in the start-up sequence, either the terminal a1 or the terminal a2 may be activated first.
【００３９】次に、端末ａ２では端末ａ１に対してＩＰ
通信を行うために、ＤＮＳサーバ１３に対して端末ａ１
のホストネームａ１．ａｒｅａ−ａ．ｊｐに対するＩＰ
アドレスを問い合わせる。これに対してＤＮＳサーバ１
３は、ＩＰアドレスＩＰ−１１を回答する。以下、端末
ａ２は端末ａ１のＩＰアドレスを知り得たので、通常の
ＡＲＰ処理（ＩＰアドレスからＭＡＣアドレスを取得）
により端末ａ１のＭＡＣアドレスを取得し、以降は直
接、端末ａ１との通信が可能となる。Next, the terminal a2 receives an IP address from the terminal a1.
In order to perform communication, the terminal a1
Host name a1. area-a. IP for jp
Query the address. On the other hand, DNS server 1
3 replies with the IP address IP-11. Hereinafter, since the terminal a2 has learned the IP address of the terminal a1, normal ARP processing (acquiring the MAC address from the IP address)
Thus, the MAC address of the terminal a1 is acquired, and thereafter, communication with the terminal a1 can be directly performed.
【００４０】なお、ＤＨＣＰサーバ１２におけるアドレ
ス割当て時間（リリース時間）に合せて、ＤＮＳサーバ
１３の対応データも更新することが望ましい。これにつ
いては、ＤＨＣＰサーバ１２からのリリース時間終了時
あるいは再割当て時にＤＮＳサーバ１２に通知し、デー
タを更新することにより同期を確保することが可能であ
る。It is desirable to update the corresponding data of the DNS server 13 in accordance with the address allocation time (release time) in the DHCP server 12. Regarding this, it is possible to notify the DNS server 12 when the release time from the DHCP server 12 ends or at the time of reallocation, and update the data to ensure synchronization.
【００４１】[0041]
【発明の効果】以上説明したように、本発明によれば、
管理サーバ、ＤＨＣＰサーバ及びＤＮＳサーバとを連携
させることにより、ＤＨＣＰによるホストアドレスの動
的割当てによるアドレスリソースの有効利用を図りつ
つ、ＤＮＳによるホストネームを用いた端末間アクセス
を全て自動的に実現することが可能となる。As described above, according to the present invention,
By linking a management server, a DHCP server, and a DNS server, all terminal-to-terminal access using a host name by DNS is automatically realized while effective use of address resources by dynamic assignment of host addresses by DHCP. It becomes possible.
【図面の簡単な説明】[Brief description of the drawings]
【図１】従来のシステムの一例を示す構成図FIG. 1 is a configuration diagram showing an example of a conventional system.
【図２】本発明のシステムの実施の形態の一例を示す構
成図FIG. 2 is a configuration diagram showing an example of an embodiment of a system of the present invention.
【図３】本発明における動作の一例を示すシーケンス図FIG. 3 is a sequence diagram showing an example of an operation in the present invention.
１−１〜１−ｎ：端末、２−１〜２−ｎ：エッジ装置、
３：アクセス系、４：センタ装置、５：ＬＡＮ、１１：
管理サーバ、１２：ＤＨＣＰサーバ、１３：ＤＮＳサー
バ。1-1 to 1-n: terminal, 2-1 to 2-n: edge device,
3: Access system, 4: Center device, 5: LAN, 11:
Management server, 12: DHCP server, 13: DNS server.
Claims (2)
管理する管理サーバと、端末を収容し該端末の固有アド
レスを管理サーバに通知するエッジ装置と、予め用意し
たホストアドレス群の中から一つのホストアドレスを端
末に動的に割り当てるＤＨＣＰサーバと、ホストアドレ
スとホストネームとを対応付けるＤＮＳサーバとを備
え、 管理サーバで端末の固有アドレスとホストネームとを対
応付け、固有アドレスをＤＨＣＰサーバに通知するとと
もに、固有アドレスとホストネームとの対応をＤＮＳサ
ーバに通知し、 ＤＨＣＰサーバで端末に割り当てたホストアドレスと該
端末の固有アドレスとの対応をＤＮＳサーバに通知し、 ＤＮＳサーバで通知情報に基づいて端末のホストアドレ
スとホストネームとを対応付けることを特徴とするダイ
ナミックドメインネームシステム。1. A plurality of terminals, a management server for managing a unique address of each terminal, an edge device for accommodating the terminal and notifying the management server of the unique address of the terminal, and a host address group prepared in advance. A DHCP server that dynamically assigns one host address to the terminal; and a DNS server that associates the host address with the host name. The management server associates the unique address of the terminal with the host name, and assigns the unique address to the DHCP server. At the same time, the correspondence between the unique address and the host name is notified to the DNS server, the correspondence between the host address assigned to the terminal by the DHCP server and the unique address of the terminal is notified to the DNS server, and the notification information is notified by the DNS server. A host address and a host name of the terminal based on the Namic domain name system.
スを用いるとともに、ホストアドレスとしてＩＰアドレ
スを用いたことを特徴とする請求項１記載のダイナミッ
クドメインネームシステム。2. The dynamic domain name system according to claim 1, wherein a MAC address is used as a unique address of the terminal, and an IP address is used as a host address.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26629398A JP3420512B2 (en) | 1998-09-21 | 1998-09-21 | Dynamic domain name system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26629398A JP3420512B2 (en) | 1998-09-21 | 1998-09-21 | Dynamic domain name system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000101589A true JP2000101589A (en) | 2000-04-07 |
| JP3420512B2 JP3420512B2 (en) | 2003-06-23 |
Family
ID=17428942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26629398A Expired - Lifetime JP3420512B2 (en) | 1998-09-21 | 1998-09-21 | Dynamic domain name system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3420512B2 (en) |
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| JP2010178141A (en) * | 2009-01-30 | 2010-08-12 | Toshiba Corp | Telephone exchanger and method for allocating host name information used for the same |
| JP4649516B2 (en) * | 2009-01-30 | 2011-03-09 | 株式会社東芝 | Telephone exchange apparatus and host name information allocation method used in the telephone exchange apparatus |
| JP2011023038A (en) * | 2010-10-18 | 2011-02-03 | Oki Data Corp | Parameter setting computer via network |
| US8683567B2 (en) | 2011-03-31 | 2014-03-25 | Belkin International, Inc. | Method of distributing information regarding one or more electrical devices and system for the same |
| US9438698B2 (en) | 2011-03-31 | 2016-09-06 | Belkin International, Inc. | Method of distributing information regarding one or more electrical devices and system for the same |
| JP2014078193A (en) * | 2012-10-12 | 2014-05-01 | Pioneer Electronic Corp | Terminal device, identification information assigning method for terminal device, and program |
| CN112039729A (en) * | 2020-08-28 | 2020-12-04 | 中移（杭州）信息技术有限公司 | Device identification method, server, electronic device, and storage medium |
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|---|---|
| JP3420512B2 (en) | 2003-06-23 |
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