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    Forming and maintaining access groups at the lan/wan interface
    3.
    发明授权
    Forming and maintaining access groups at the lan/wan interface 失效
    在lan / wan界面上形成和维护访问组

    公开(公告)号：US5365523A

    公开(公告)日：1994-11-15

    申请号：US976826

    申请日：1992-11-16

    申请人： Jeffrey H. Derby ,  Willibald A. Doeringer ,  John E. Drake, Jr. ,  Douglas H. Dykeman ,  Liang Li ,  Marcia L. Peters ,  Haldon J. Sandick ,  Ken Van Vu

    发明人： Jeffrey H. Derby ,  Willibald A. Doeringer ,  John E. Drake, Jr. ,  Douglas H. Dykeman ,  Liang Li ,  Marcia L. Peters ,  Haldon J. Sandick ,  Ken Van Vu

    IPC分类号： H04L12/66 ,  H04L12/46

    CPC分类号： H04L12/66

    摘要： Access agents in nodes at the LAN/WAN interface are formed into a group of access agents so that the access agents may be managed by the WAN as a group. The group must maintain group operation integrity in that if communications between agents in the group are broken, the access agents will coalesce into subgroups and continue performing communication jobs as a group activity. Each of the access agents contains a finite state machine to perform the tasks of group formation and maintenance. The formation of interconnected access agents into a group is accomplished by one access agent being identified as a group leader. All other access agents communicating with the group leader within the LAN may then join the group. The maintenance of group activity integrity is accomplished by detecting a break in group communication integrity and thereafter reforming the group into multiple smaller groups. The maintenance of group operation integrity also includes the merger of small groups into a large group when a bridge is added between LAN segments.

    摘要翻译： 在LAN / WAN接口的节点中的接入代理被形成为一组接入代理，使得接入代理可以由WAN作为一组进行管理。 该组必须维护组操作完整性，因为如果该组中的代理之间的通信中断，则访问代理将合并成子组并继续执行通信作业作为组活动。 每个访问代理包含一个有限状态机来执行组的形成和维护任务。 将互连的接入代理组合成一组是由一个接入代理被识别为组长。 所有与LAN内的组长通信的其他访问代理可以加入该组。 群体活动完整性的维护是通过检测组通信完整性的突破，然后将组重组成多个较小的组来实现的。 群组运行完整性的维护还包括在LAN段之间添加桥梁时将小组合并成大型组。

    Distributed management communications network
    4.
    发明授权
    Distributed management communications network 失效
    分布式管理通信网络

    公开(公告)号：US5634011A

    公开(公告)日：1997-05-27

    申请号：US517305

    申请日：1995-08-21

    申请人： Joshua S. Auerbach ,  John E. Drake, Jr. ,  Prabandham M. Gopal ,  Elizabeth A. Hervatic ,  Marc A. Kaplan ,  Shay Kutten ,  Marcia L. Peters ,  Michael J. Ward

    发明人： Joshua S. Auerbach ,  John E. Drake, Jr. ,  Prabandham M. Gopal ,  Elizabeth A. Hervatic ,  Marc A. Kaplan ,  Shay Kutten ,  Marcia L. Peters ,  Michael J. Ward

    IPC分类号： H04L12/18 ,  H04L12/24 ,  H04L12/56 ,  H01H67/00

    CPC分类号： H04L12/1854 ,  H04L41/042 ,  H04L12/185 ,  H04L12/1877 ,  H04L2012/5626

    摘要： A multinode, multicast communications network has a distributed control for the creation, administration and operational mode selection operative in each of the nodes of the network. Each node is provided with a Set Manager for controlling either creation of, administration or access to a set of users to whom a multicast is to be directed. The Set Manager maintains a record of the local membership of all users associated with the node in which the Set Manager resides. A given Set Manager for each designated set of users is assigned the task of being the Set Leader to maintain membership information about the entire set of users in the multicast group. One of the Set Managers in the communications network is designated to be the Registrar which maintains a list of all the Set Leaders in the network. The Registrar insures that there is one and only one Set Leader for each set of users, answers inquiries about the membership of the sets and directs inquiries to appropriate Set Leaders if necessary. All of the set creation, administration and control functions can therefore be carried out by any node of the system and provision is made to assume the function at a new node when failure or partition in the network occurs.

    摘要翻译： 多节点组播通信网络具有分布式控制，用于在网络的每个节点中操作的创建，管理和操作模式选择。 每个节点都设有一个集管理器，用于控制要组播多路广播的一组用户的创建，管理或访问。 集管理器维护与Set Manager所在节点相关联的所有用户的本地成员资格记录。 为每个指定的用户组给定的集合管理器被分配为作为集合领导者的任务以维护关于组播组中的整个用户组的成员关系信息。 通信网络中的一个集合管理器被指定为注册服务商，该服务器维护网络中所有集团领导者的列表。 注册服务机构确保每组用户只有一个，只有一个集合领导，回答关于集合成员的查询，并在必要时向相应的集合领导者查询。 因此，所有的创建，管理和控制功能都可以由系统的任何节点执行，并且在网络中发生故障或分区时，将提供在新节点上承担功能。

    Multicast communication tree creation and control method and apparatus
    5.
    发明授权
    Multicast communication tree creation and control method and apparatus 失效
    组播通信树创建与控制方法及装置

    公开(公告)号：US5355371A

    公开(公告)日：1994-10-11

    申请号：US900628

    申请日：1982-06-18

    申请人： Joshua S. Auerbach ,  Chee-Seng Chow ,  John E. Drake, Jr. ,  Prabandham M. Gopal ,  Elizabeth A. Hervatic ,  Marc A. Kaplan ,  Marcia L. Peters ,  Michael J. Ward

    发明人： Joshua S. Auerbach ,  Chee-Seng Chow ,  John E. Drake, Jr. ,  Prabandham M. Gopal ,  Elizabeth A. Hervatic ,  Marc A. Kaplan ,  Marcia L. Peters ,  Michael J. Ward

    IPC分类号： H04L12/18 ,  H04L12/46 ,  H04L12/44 ,  H04L12/56

    CPC分类号： H04L12/185 ,  H04L12/1854

    摘要： In a multicast network communication system, administration of the communication path making up the multicast tree itself has been separated from control and administration of the network. Creation of a multicast distribution tree and control over the membership thereof, is separately controlled independently from the creation and use of the tree transmission path used to communicate among the members of a multicast set. Transmission distribution trees are set up when a transmission request is received and the properties of the transmission path that is required are known. Transmission paths are created and controlled by all nodes in the communications system, each node having necessary control code and processors for responding to requests from set members to transmit a message to groups of users by creating and activating the necessary tree communication path distribution linkages. A distribution tree is created by the Tree Leader by generating a tree address using a random number generator. A tree address correlator is generated utilizing network and node identifiers unique for the network, and a list of subnodes or users connected for each member of the multicast tree set is generated. Using this information, a tree distribution path is computed to cover all of the subnodes required and a tree set up request message is sent by the Tree Leader along a computed path to each involved subnode. Each subnode returns a message indicating whether the tree address is already in use or is available for use. Successfully negotiated tree addresses are marked at the path link initiation and termination points at each node through the network.

    摘要翻译： 在组播网络通信系统中，构成组播树本身的通信路径的管理与网络的控制和管理分离。 独立地创建组播分发树和对其成员的控制，独立于创建和使用用于在组播组的成员之间进行通信的树传输路径。 当接收到发送请求并且已知所需的传输路径的属性时，建立传输分配树。 传输路径由通信系统中的所有节点创建和控制，每个节点具有必要的控制代码和处理器，用于响应来自设备成员的请求，通过创建和激活必要的树通信路径分配链接来发送消息到用户组。 树分配树通过使用随机数生成器生成树形地址来创建分布树。 使用网络唯一的网络和节点标识符生成树地址相关器，并且生成为多播树集的每个成员连接的子节点或用户列表。 使用该信息，计算树分布路径以覆盖所有所需的子节点，并且树结构请求消息沿着计算的路径发送到每个相关子节点。 每个子节点返回一条消息，指示树状地址是否已被使用或可用。 通过网络在每个节点的路径链路启动和终止点标记成功协商的树地址。

    Distributed processing of route selection across networks and subnetworks
    8.
    发明授权
    Distributed processing of route selection across networks and subnetworks 失效
    跨网络和子网路由选择的分布式处理

    公开(公告)号：US5398012A

    公开(公告)日：1995-03-14

    申请号：US980854

    申请日：1992-11-24

    申请人： Jeffrey H. Derby ,  Willibald A. Doeringer ,  John E. Drake, Jr. ,  Douglas H. Dykeman ,  Haldon J. Sandick ,  Ken V. Vu

    发明人： Jeffrey H. Derby ,  Willibald A. Doeringer ,  John E. Drake, Jr. ,  Douglas H. Dykeman ,  Haldon J. Sandick ,  Ken V. Vu

    IPC分类号： H04L12/56 ,  H04Q11/04 ,  H04L11/20

    CPC分类号： H04L45/04 ,  H04L45/44

    摘要： The process for determining the best communication route from a source end station to a destination end station is distributed over both source and destination network nodes. Network nodes, at the interface between a wide area network (WAN) and each subnetwork, contain access agents to control the communication flow between the wide area network and an end station in the subnetwork. The task of selecting the best route between two end stations is distributed between the access agents at the WAN interface in the first subnetwork, and the access agents at the WAN interface in the second subnetwork. Each access agent at one WAN interface obtains the best route from itself to the end station in its subnetwork. Each access agent at the other WAN interface finds the best route from each access agent at the first WAN interface through itself to the end station in its subnetwork. One designated access agent collects all the best route information. This best route information is concatenated, and the route with the least weight is selected as the best route between end stations.

    摘要翻译： 用于确定从源端站到目的地端站的最佳通信路由的过程分布在源网络节点和目的地网络节点上。 在广域网（WAN）和每个子网之间的接口上的网络节点包含访问代理，以控制广域网与子网中终端站之间的通信流。 在两个终端站之间选择最佳路由的任务分布在第一子网中的WAN接口的接入代理和第二子网中WAN接口的接入代理之间。 一个WAN接口的每个接入代理在其子网中获得从自己到终端站的最佳路由。 另一个WAN接口的每个接入代理从第一个WAN接口的每个接入代理器找到从其子网到终端站的最佳路由。 一个指定的访问代理收集所有最好的路由信息​​。 这个最佳路由信息是连接起来的，重量最小的路由被选为终端站之间的最佳路由。

    Maintenance of message distribution trees in a communications network
    9.
    发明授权
    Maintenance of message distribution trees in a communications network 失效
    在通信网络中维护消息分发树

    公开(公告)号：US5289460A

    公开(公告)日：1994-02-22

    申请号：US923125

    申请日：1992-07-31

    申请人： John E. Drake, Jr. ,  Elizabeth A. Hervatic

    发明人： John E. Drake, Jr. ,  Elizabeth A. Hervatic

    IPC分类号： H04L12/18 ,  H04L1/12

    CPC分类号： H04L12/185 ,  H04L12/1877

    摘要： Each node in a multinode communication system is provided with programming to act as a Set Manager for a given set of nodes and users. Functions of the Set Manager include operation processes for creating distribution trees for efficient multicast and bandwidth reservation tasks. Because set membership is not necessarily fixed or accurate at the time the distribution tree is created, the Tree Leader task that creates and maintains the trees needs accurate and updated information showing the number of users at the nodes it serves which are participating in the distribution tree. The count of active users at nodes served by the Tree Leader is provided in response to an indicia established at the time the Tree Leader sets up the tree. Each Set Manager at a given node monitors for changes in set membership and link failure and notifies the requesting Tree Leaders for each tree in which it participates whenever changes in the number of users either by joining or leaving the set or link failures occur by direct communication between the Set Managers and the Tree Leaders without requiring intervention of other elements in the system.

    摘要翻译： 多节点通信系统中的每个节点都具有编程功能，可用作给定的一组节点和用户的集管理器。 集管理器的功能包括用于创建分发树的操作过程，用于高效的组播和带宽预留任务。 因为在创建分发树时，集合成员身份不一定是固定的或准确的，所以创建和维护树的Tree Leader任务需要准确和更新的信息，显示正在参与分配树的其所服务的节点上的用户数量 。 响应树树设置树时建立的标记，提供了由Tree Leader服务的节点上的活动用户数。 给定节点上的每个集合管理器监视集合成员资格和链路故障中的更改，并通过加入或离开设置或链接故障直接通信发生的用户数量的变化，通知请求的树形引擎。 集团经理和树领导者之间，不需要系统中其他元素的干预。

    Split-switch based PNNI hierarchy
    10.
    发明授权
    Split-switch based PNNI hierarchy 有权
    基于分割开关的PNNI层次结构

    公开(公告)号：US06690653B1

    公开(公告)日：2004-02-10

    申请号：US09177217

    申请日：1998-10-22

    申请人： Anix Anbiah ,  John E. Drake, Jr. ,  Robert Coltun ,  Theodore Ernest Tedijanto

    发明人： Anix Anbiah ,  John E. Drake, Jr. ,  Robert Coltun ,  Theodore Ernest Tedijanto

    IPC分类号： H04L1256

    CPC分类号： H04L45/04 ,  H04L12/5601 ,  H04L2012/562

    摘要： A telecommunications system. The system includes a first area. The system includes a second area connected to the first area to form a single physical network for routing connections and in which there is selective propagation of information between each area in the network. A split switch. The split switch includes a first node adapted to be disposed in a first area. The split switch includes a second node adapted to be disposed in a second area. The second node is in communication with the first node. The first node prevents information from propagating into the first area from the second area which was provided to the second area from the first area or arose from the first area. A method for routing connections. The method includes the steps of propagating information concerning a connection from a first area of a physical network to a second area of the physical area. Then there is the step of preventing the information from forming a routing loop back to the first area.

    摘要翻译： 电信系统。 该系统包括第一区域。 该系统包括连接到第一区域的第二区域以形成用于路由连接的单个物理网络，并且其中在网络中的每个区域之间存在信息的选择性传播。 分路开关 分离开关包括适于设置在第一区域中的第一节点。 分离开关包括适于设置在第二区域中的第二节点。 第二节点与第一节点通信。 第一节点防止从第一区域提供给第二区域的第一区域中的信息传播到第一区域，或者从第一区域产生。 路由连接的方法。 该方法包括以下步骤：将有关连接的信息从物理网络的第一区域传播到物理区域的第二区域。 然后有防止信息形成路由回路回到第一区域的步骤。