WO2002100085A1 - Procede d'etablissement de groupes de serveurs clients a liaisons multiples - Google Patents

Procede d'etablissement de groupes de serveurs clients a liaisons multiples Download PDF

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Publication number
WO2002100085A1
WO2002100085A1 PCT/CN2002/000151 CN0200151W WO02100085A1 WO 2002100085 A1 WO2002100085 A1 WO 2002100085A1 CN 0200151 W CN0200151 W CN 0200151W WO 02100085 A1 WO02100085 A1 WO 02100085A1
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WIPO (PCT)
Prior art keywords
server
link
user
bundled
access
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PCT/CN2002/000151
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English (en)
French (fr)
Inventor
Liping Gao
Hongxing Wang
Yu Cheng
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Huawei Technologies Co., Ltd.
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Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2002100085A1 publication Critical patent/WO2002100085A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2854—Wide area networks, e.g. public data networks

Definitions

  • the present invention relates to a method for accessing the Internet, and in particular, to a method for setting a multi-link bundled user server group on an access server side.
  • the Internet rate is limited by the line transmission rate.
  • users with multiple link resources such as using multiple phone lines to access the Internet at the same time, or users who use the ISDN (Integrated Services Digital Network) digital line that provides the transmission rate equivalent to two telephone lines, they need to belong to Bundle multiple links of a user.
  • the applicant's application number is 01116457.3 and the invention name is "A Method for Accessing Multilink Users on the Access Server Side" by using a multichain that communicates with the access unit in the access server.
  • the bundled user server performs online registration, query, logout, and other operations on user information, and identifies the links that belong to the same online user.
  • the PPP (point-to-point) protocol implements bundling at the link layer; if the access units are located with different IP addresses, a tunnel is established between the access units through a tunneling protocol, and then the PPP protocol is used to implement bundling.
  • the number of multi-link users increases to a certain number, the information processing is concentrated on a multi-link bundled user server, the efficiency will be reduced, and the user information sent from the access server cannot be processed normally, which will cause the bundle to fail. In the case of only one server, once a failure occurs, all multi-link users cannot access the Internet normally, and the reliability is low. Summary of the invention
  • an object of the present invention is to provide a method for setting up a multi-chain user server group, which enables the multi-link user server to ensure processing efficiency even when the number of multi-link users increases.
  • the reliability is improved, and multiple links belonging to the same user are registered and queried in the same multi-link bundled user server.
  • the method adopted by the present invention is: a plurality of multi-chain stranded user servers for online registration, query, and log-off of multi-link user information are set on the access server, and they communicate with the access unit in the access server. , And each multilink user dynamically assigns one of the multilink bundled user servers to each dial-up connection.
  • Each multi-link user can dynamically assign a multi-link bundled user server to each dial-up Internet connection.
  • the integer starting from 0 can be set as the number of each multi-link bundled user server. Then follow the steps below. get on: -
  • a multi-link bundled user server whose number is equal to the result of the modulo operation is assigned to the multi-link user.
  • the technical solution of the present invention uses multiple multi-link bundled user servers to process user information. While the server processing capacity is improved, a multi-link bundled user server is dynamically designated by each dial-up Internet access for each multi-link user. Method, so that multiple links belonging to the same user are registered and queried in the same multi-link bundled user server, and finally connected Bundle the incoming server side, and load the load by each multi-link bundled user server to ensure processing efficiency when the number of multi-link users increases, and even if individual servers fail, newly accessed users go to other normally running servers Register on the server, and the operation performed on the faulty server can also be switched to the corresponding backup server to continue. Users can still access the Internet, which improves the reliability of multi-link user access services.
  • FIG. 1 is a schematic diagram of an embodiment of the present invention using two multi-link bundled user servers. detailed description
  • the user terminal a dials up and accesses the Internet in a multi-link manner through two telephone lines or ISDN digital lines Bl and B2, and then reaches the PST program-controlled switch b, and the PST program-controlled switch b communicates with the access unit in the access server c through a trunk line.
  • the multi-chain trapped user server group d and the access unit in the access server c provided by the present invention communicate with each other.
  • FIG. 1 shows a case where two channels pass through a trunk line of the PSTN program-controlled switch b and enter two different access units in the access server c with two links 11 and 12, and the different access units have different IP addresses. Because 11 and 12 belong to the same user, they are designated to register and query in the same multi-link bundled user server, and then a tunnel e is established between the two access units, and then links 11 and 12 are bundled using the PPP protocol.
  • N multi-link bundled user services The server numbers are set from 0 to Nl.
  • multi-link bundled user servers there are three multi-link bundled user servers, and their numbers are 0, 1, and 2, in order.
  • a multilink user dials on the Internet, he reads his user terminal authentication word, finds the sum of the values of the user terminal authentication word, and then performs a modulo operation on the required sum with 3. The result must be 0, One of the three values 1, 2 if the operation result is 0, then the user's information is registered and queried in the multi-link bundled user server with the number 0.
  • a backup server can be set up for each multi-link bundled user server to back up multiple servers in the server.
  • Link user information and when the server fails, it continues the operations of online registration, query, and logout of multi-link user information.
  • the data backup between the active server and the backup server can use real-time backup, that is, the active server receives the multi-link user information from the access server and finds that the backup server exists, and forwards a copy of the multi-link user information.
  • Data backup can also adopt overall backup. Between the main server and the backup server, the party holding the latest data refreshes the data holding the old data. The steps are as follows:
  • the server with the old data is used as the requester, and a backup request is sent to the sender server with the new data;
  • the sender stops receiving data from the access server. Respond to the requester after accessing data from the server;
  • the requesting party clears the existing data
  • the sender transmits data to the requester
  • the backup server returns to the running state
  • the multi-link bundled user server returns to the running state.
  • the above steps explain the negotiation process of the overall data backup. This process may be initiated by the backup server or requested by the active server.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Telephonic Communication Services (AREA)
  • Computer And Data Communications (AREA)

Description

设置多链路捆绑用户服务器组的方法 技术领域
本发明涉及互联网接入方法，尤其涉及一种在接入服务器端设置 多链路捆绑用户服务器组的方法。
背景技术
目前， 对于只有一个链路资源的用户来说， 上网速率受到线路传 输速率的限制。但对于有多个链路资源的用户， 例如同时使用数条电 话线上网， 或通过可提供相当于两条电话线传输速率的 ISDN (综合 业务数字网）数字线上网的用户， 就需要将属于一个用户的多个链路 进行捆绑。 本申请人在申请号为 01116457.3, 发明名称为 《一种在 接入服务器端对多链路用户进行接入的方法》中是采用一台与接入服 务器中的接入单元相互通信的多链路捆绑用户服务器对用户信息进 行上网注册、 查询、 下网注销等操作， 对属于同一个上网用户的链路 作标识，如果它们所在的接入单元具有相同的 IP(互联网协议）地址， 则使用 PPP (点对点）协议在链路层实现捆绑； 如果所在的接入单元 具有不同的 IP地址， 就在接入单元间通过隧道协议建立隧道， 再使 用 PPP协议实现捆绑。然而多链路用户增加到一定数量时，信息的处 理集中在一台多链路捆绑用户服务器上，效率就会降低以至于无法正 常处理接入服务器发来的用户信息，会导致捆绑失败， 而且在该服务 器仅有一台的情况下一旦发生故障， 所有多链路用户都不能正常上 网， 可靠性较低。 发明内容
针对现有技术中的问题，本发明的目的是提供一种设置多链^困 绑用户服务器组的方法，该方法使多链路捆绑用户服务器在多链路用 户大量增加时仍保证处理效率，提高可靠性， 并且使属于同一用户的 多个链路在同一台多链路捆绑用户服务器中注册、 查询。
本发明采用的方法是:在接入服务器端设置对多链路用户信息进 行上网注册、 查询、 下网注销的多台多链 困绑用户服务器， 它们与 接入服务器中的接入单元相互通信，并且给每个多链路用户的每次拨 号上网动态指定其中一台多链路捆绑用户服务器。
给每个多链路用户的每次拨号上网动态指定一台多链路捆绑用 户服务器可以先将从 0起始的整数依次定为各台多链路捆绑用户服 务器的编号， 再依下述步驟进行： -
( 1 )读取该多链路用户上网时终端与接入服务器进行 PPP 的 LCP (连接控制协议）协商产生的用户终端鉴別字；
( 2 )求出用户终端鉴别字的各个位的数值相加之和， 再用多链 路捆绑用户服务器的数量值对求出的和进行取模运算；
( 3 )将编号与取模运算结果相等的多链路捆绑用户服务器指定 给该多链路用户。
本发明的技术方案采用多台多链路捆绑用户服务器处理用户信 息，在服务器处理能力提高的同时又通过给每个多链路用户的每次拨 号上网动态指定一台多链路捆绑用户服务器的方法，使属于同一用户 的多个链路在同一台多链路捆绑用户服务器中注册、 查询， 最终在接 入服务器端实现捆绑， 由各个多链路捆绑用户服务器将负荷分担， 在 多链路用户增多时仍能保证处理效率， 而且即使个别服务器发生故 障，新接入的用户就到其他正常运行的服务器上注册，故障服务器上 进行的操作亦可切换到与之对应的备份服务器继续，用户仍然可以上 网， 提高了对多链路用户接入服务的可靠性。
下面结合附图和实施例对本 £明作进一步说明。
附图说明
图 1是本发明采用两台多链路捆绑用户服务器的实施例示意图。 具体实施方式
参考图 1 , 用户终端 a通过两条电话线或 ISDN数字线 Bl、 B2 以多链路方式拨号上网后， 到达 PST 程控交换机 b， PST 程控交 换机 b通过中继线与接入服务器 c中的接入单元相连接，本发明设置 的多链 困绑用户服务器组 d与接入服务器 c中的接入单元相互通 信。图 1中表示了两条通道经过 PSTN程控交换机 b的中继线以两个 链路 11、 12分别进入接入服务器 c中的不同接入单元且不同的接入 单元具有不同 IP地址的情况， 链路 11、 12因属同一用户而被指定在 同一台多链路梱绑用户服务器中注册、 查询， 而后在两个接入单元之 间建立隧道 e , 再使用 PPP协议将链路 11、 12捆绑。
通过观察发现， 在多链路用户拨号上网时， 终端与接入服务器进 行 PPP的 LCP协商会产生一个用户终端鉴別字， 该鉴别字是一个不 超过 20位的 16进制数，且同一用户每次拨号的用戶终端鉴别字都不 相同， 具有随机性。 于是针对这一发现， 将 N 台多链路捆绑用户服 务器的编号定为 0至 N-l。 当多链路用户拨号上网时， 读取其用户终 端鉴别字， 求出用户终端鉴别字的各个位的数值相加之和， 再对 N 进行取才莫运算， 取模运算的结果的数值范则围也是 0至 N-l， 例如， 有 3台多链路捆绑用户服务器， 其编号依次为 0、 1、 2。 多链路用户 拨号上网时， 读取其用户终端鉴别字， 求出用户终端鉴别字的各个位 的数值相加之和， 再用 3对所求的和进行取模运算， 结果必定是 0、 1、 2三个数值之一， 如果运算结果是 0, 那么该用户的信息就在编号 为 0的多链路捆绑用户服务器中注册、 查询。
为了进一步提高对多链路用户接入服务的可靠性，在多链路捆绑 用户服务器组中，可对每台多链路捆绑用户服务器均设置一台备份服 务器，用于备份该服务器中的多链路用户信息且当该服务器出现故障 时接续其中多链路用户信息的上网注册、 查询、 下网注销的操作。
在主用服务器与备份服务器之间的数据备份可以采用实时备份， 即主用服务器收到接入服务器端 ^多链路用户信息，并发现备份服务 器存在， 就将多链路用户信息转发一份给备份服务器。数据备份还可 以采用整体备份，在主用服务器与备份服务器之间由保存最新数据的 一方对保存旧数据的一方刷新数据， 执行步骤入下：
A、 检查多链路捆绑用户服务器与其备份服务器中记录的数据， 如果不一致， 执行后续步骤；
B、 由存有旧数据的服务器作请求方， 向存有新数据的发送方服 务器发出备份请求；
C、 发送方停止接收来自接入服务器的数据， 处理完已接收来自 接入服务器的数据后向请求方回应；
D、 请求方清除现存数据；
E、 发送方向请求方传送数据；
F 、 备份服务器回到运行状态；
G、 多链路捆绑用户服务器回到运行状态。
以上步骤说明的是数据整体备份的协商过程，该过程既可能由备 份服务器请求发起， 也可能由主用服务器请求发起。
本领域技术人员依本发明的技术方案，以其他类型随机函数指定 多链路捆绑用户服务器亦在本发明保护范围之内。

Claims

权 利 要 求
1、 一种设置多链路捆绑用户服务器组的方法， 包括在接入服务 器端设置对多链路用户信息进行上网注册、 查询、 下网注销的多链路 捆绑用户服务器， 该服务器与接入服务器中的接入单元相互通信， 其 特征在于： 所述多链路捆绑用户服务器的数量为多台， 并且^：个多 链路用户的每次拨号上网动态指定其中一台多链 困绑用户服务器。
2、 如权利要求 1所述的设置多链路捆绑用户服务器组的方法， 其特征在于：所述^ ^个多链路用户的每次拨号上网动态指定一台多 链路捆绑用户服务器是将从 0起始的整数依次定为各台多链路捆绑 用户服务器的编号， 再依下述步骤进行：
( 1 )读取该多链路用户上网时终端与接入服务器进行 PPP 的 LCP协商产生的用户终端鉴别字；
( 2 ) 求出用户终端鉴别字的各个位的数值相加之和， 再用多链 路捆绑用户服务器的数量值对求 ά的和进行取模运算；
( 3 )将编号与取模运算结果相等的多链路捆绑用户服务器指定 给该多链路用户。
3、 如权利要求 1或 2所述的设置多链 困绑用户服务器组的方 法， 其特征在于： 对每台多链路捆绑用户服务器均设置一台用于 ^分 该服务器中的多链路用户信息且当该服务器出现故障时接续其中多 链路用户信息的上网注册、 查询、 下网注销操作的备份服务器。
4、 如权利要求 3所述的设置多链路捆绑用户服务器组的方法， 其特征在于：在所述多链路捆绑用户服务器与其备份服务器之间依下 述步骤进行整体备份：
A、 检查多链路捆绑用户服务器与其备份服务器中记录的数据， 如果不一致， 执行后续步骤；
B、 由存有旧数据的服务器作请求方， 向存有新数据的发送方月艮 务器发出备份请求；
C、 发送方停止接收来自接入 务器的数据， 处理完已接收来自 接入服务器的数据后向请求方回应；
D、 请求方清除现存数据；
E、 发送方向请求方传送数据；
F 、 备份服务器回到运行状态；
G、 多链路捆绑用户服务器回到运行状态。
PCT/CN2002/000151 2001-06-05 2002-03-13 Procede d'etablissement de groupes de serveurs clients a liaisons multiples WO2002100085A1 (fr)

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CN1327727C (zh) * 2005-04-18 2007-07-18 华为技术有限公司 一种媒体网关双归属的实现方法
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CN1882107B (zh) * 2005-06-17 2010-12-08 华为技术有限公司 一种在下一代网络中实现信令网关双归属的方法
CN100502412C (zh) * 2005-12-14 2009-06-17 浙江工业大学 动态ip拨号网络的计算机定位方法
CN100559763C (zh) * 2007-08-28 2009-11-11 中国科学院软件研究所 一种远程网络服务的完整性检验方法
CN101741616B (zh) * 2009-12-03 2012-10-31 北京和利时系统工程有限公司 一种数据采集系统及其设备
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