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1.发明授权Method of determining whether to use preempt/resume or alternate protocol for data transmission 失效确定是否使用抢占/恢复或备用协议进行数据传输的方法
公开(公告)号：US5343473A
公开(公告)日：1994-08-30
申请号：US927697
申请日：1992-08-07
申请人： Israel Cidon , Richard M. Doney , John E. Drake, Jr. , Elizabeth A. Hervatic , Kenneth H. Potter, Jr. , Theodore E. Tedijanto
发明人： Israel Cidon , Richard M. Doney , John E. Drake, Jr. , Elizabeth A. Hervatic , Kenneth H. Potter, Jr. , Theodore E. Tedijanto
CPC分类号： H04L47/2433 , H04L12/6418 , H04L29/06 , H04L47/10 , H04L47/245 , H04L2012/6459 , H04L2012/6464 , H04L2012/6478 , H04L69/32 , H04L69/324
摘要： A method is disclosed for determining whether to use a preempt/resume protocol or an alternate protocol in transmitting data packets from a local system to a remote system. Each system informs the other whether it supports preempt/resume and provides the sizes of the largest low priority data packets it can send and receive. The local system always elects the alternate protocol unless both support preempt/resume. The local system then selects the lesser of (a) the largest low-priority data packet it can send and (b) the largest low-priority data packet the remote system can receive. Use of prompt/resume is initiated by the local system only where a packet of the selected size would be delayed in reaching the remote system by more than a predetermined interval.
摘要翻译： 公开了一种用于确定在从本地系统向远程系统传输数据分组时是否使用抢占/恢复协议或备用协议的方法。 每个系统通知对方是否支持抢占/恢复，并提供可以发送和接收的最大的低优先级数据包的大小。 本地系统始终选择备用协议，除非支持抢占/恢复。 本地系统然后选择（a）可以发送的最大的低优先级数据分组中的较小者，（b）远程系统可以接收的最大的低优先级数据分组。 仅当本地系统启动提示/恢复的使用时，只有当所选大小的数据包将被延迟超过预定间隔到达远程系统时。
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2.发明授权
公开(公告)号：US5459725A
公开(公告)日：1995-10-17
申请号：US215534
申请日：1994-03-22
申请人： Rachel A. Bodner , Chee-Seng Chow , Israel Cidon , John G. Dudley , Allan K. Edwards , Inder S. Gopal , Chandra P. Immanuel , Marc A. Kaplan , Shay Kutten , Theodore E. Tedijanto
发明人： Rachel A. Bodner , Chee-Seng Chow , Israel Cidon , John G. Dudley , Allan K. Edwards , Inder S. Gopal , Chandra P. Immanuel , Marc A. Kaplan , Shay Kutten , Theodore E. Tedijanto
CPC分类号： H04L12/1868 , H04L1/1685 , H04L1/188 , H04L12/1854 , H04L2001/0093 , H04L2001/125
摘要： A packet communications network in which multicast transmissions are made reliable by transmitting acknowledgements to all neighbors of every receiving node, including the source node. This allows the relinquishment of message holding buffers as soon as all near neighbors acknowledge receipt of the message after only tile longest round trip time to the nearest neighbors, rather than the round trip to the furthest destination. Moreover, highly reliable ancillary point-to-point transmission facilities can be used to retransmit multicast messages indicated as being lost by failure of acknowledgment. Finally, network partitions occurring during the multicast procedure do not necessarily lose the multicast message to the remote partitions since any node receiving the message can insure delivery to all other nodes in that partition.
摘要翻译： 一种分组通信网络，其中通过向包括源节点的每个接收节点的所有邻居发送确认使多播传输变得可靠。 一旦所有邻近的邻居都确认在最近的往返时间最长的往返时间之后确认接收到消息，而不是最远的目的地的往返行程，则可以放弃信息保持缓冲区。 此外，高度可靠的辅助点对点传输设施可以用于重传由确认失败指示为丢失的多播消息。 最后，在多播过程中发生的网络分区不一定会丢失到远程分区的多播消息，因为接收消息的任何节点都可以确保传送到该分区中的所有其他节点。
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3.发明授权
公开(公告)号：US5359593A
公开(公告)日：1994-10-25
申请号：US112736
申请日：1993-08-26
申请人： Jeffrey H. Derby , John E. Drake, Jr. , Claude Galand , Levent Gun , Gerald A. Marin , Allen L. Roginsky , Theodore E. Tedijanto
发明人： Jeffrey H. Derby , John E. Drake, Jr. , Claude Galand , Levent Gun , Gerald A. Marin , Allen L. Roginsky , Theodore E. Tedijanto
CPC分类号： H04L12/5602 , H04L43/0829 , H04L43/0894 , H04L2012/5632 , H04L2012/5635 , H04L2012/5636 , H04L2012/5637 , H04L2012/5651
摘要： Access control for a packet communications network includes a dynamic bandwidth updating mechanism which continuously monitors the mean bit rate of the signal source and the loss probability of the connection. These values are filtered to remove noise and then used to test whether the values fall within a pre-defined acceptable adaptation region in the mean bit rate, loss probability plane. Values falling outside of this region trigger bandwidth updating procedures which, in turn, result in acquiring a new connection bandwidth, and determining new filter parameters and new parameters for a leaky bucket access mechanism.
摘要翻译： 分组通信网络的访问控制包括动态带宽更新机制，其连续监视信号源的平均比特率和连接的丢失概率。 对这些值进行滤波以去除噪声，然后用于测试值是否落在平均位速率丢失概率平面内的预定义的可接受适应区域内。 落在该区域之外的值触发带宽更新过程，这又导致获得新的连接带宽，并且确定用于泄漏桶访问机制的新的过滤器参数和新参数。
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公开(公告)号：US06751189B1
公开(公告)日：2004-06-15
申请号：US09904623
申请日：2001-07-13
IPC分类号： G01R3108
CPC分类号： H04J3/085 , H04J2203/0042 , H04J2203/006 , Y10S370/907
摘要： Systems and methods consistent with this invention allow for each node within one or more rings to obtain connection and topology information from other nodes within these rings. In such a system, each node is able to maintain connection table and topology tables for each node and each ring within a ring network. In particular, such information can be kept current because this scheme allows for dynamic updating of connection and topology information in real time. With such current information, a node is able to utilize this information to execute such operations as squelching connections on a protect line and timeslot interchange. In addition, by supporting timeslot interchange, the ring can be managed as more than a single logical entity as well as can have better bandwidth management utilization.
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公开(公告)号：US07414985B1
公开(公告)日：2008-08-19
申请号：US10061995
申请日：2002-02-01
申请人： Theodore E. Tedijanto , Paul Curtis , Neeraj Gulati , Helen Zhang
发明人： Theodore E. Tedijanto , Paul Curtis , Neeraj Gulati , Helen Zhang
IPC分类号： H04L12/28
CPC分类号： H04L45/00 , H04J2203/0053 , H04J2203/0067 , H04J2203/0094 , H04L45/245 , H04L45/62 , Y02D50/30
摘要： A method and system for aggregating a plurality of parallel communications links transmitting data between adjacent nodes in a network is provided. The method simplifies network topology by replacing multiple parallel communications links between nodes in the network with a single aggregated link. The method advertises the available bandwidth of each aggregated link to the network, the available bandwidth being the maximum bandwidth available for any one of the parallel links in the aggregate. The method permits each aggregated link to select which of the parallel links in the aggregate is to be used to transfer data from one node to the other. Aggregating links can be automatic and based on one or more predetermined criteria, such as the service class supported by the parallel links.
摘要翻译： 提供了一种用于聚合在网络中的相邻节点之间传送数据的多个并行通信链路的方法和系统。 该方法通过使用单个聚合链路替换网络中的节点之间的多个并行通信链路来简化网络拓扑。 该方法将每个聚合链路的可用带宽通告给网络，可用带宽是可用于聚合中任何一个并行链路的最大带宽。 该方法允许每个聚合链路选择聚合中的哪个并行链路将用于将数据从一个节点传送到另一个节点。 聚合链接可以是自动的并且基于一个或多个预定标准，诸如由并行链路支持的服务类别。
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6.发明授权公开(公告)号：US07167445B2
公开(公告)日：2007-01-23
申请号：US10824380
申请日：2004-04-15
IPC分类号： H04L1/00
CPC分类号： H04J3/085 , H04J2203/0042 , H04J2203/006 , Y10S370/907
摘要： Systems and methods consistent with this invention allow for each node within one or more rings to obtain connection and topology information from other nodes within these rings. In such a system, each node is able to maintain connection table and topology tables for each node and each ring within a ring network. In particular, such information can be kept current because this scheme allows for dynamic updating of connection and topology information in real time. With such current information, a node is able to utilize this information to execute such operations as squelching connections on a protect line and timeslot interchange. In addition, by supporting timeslot interchange, the ring can be managed as more than a single logical entity as well as can have better bandwidth management utilization.
摘要翻译： 与本发明一致的系统和方法允许一个或多个环中的每个节点从这些环中的其他节点获得连接和拓扑信息。 在这样的系统中，每个节点能够为环网内的每个节点和每个环保持连接表和拓扑表。 特别地，这样的信息可以保持最新，因为该方案允许实时动态地更新连接和拓扑信息。 利用这样的当前信息，节点能够利用该信息来执行诸如在保护线路和时隙交换上的静噪连接的操作。 此外，通过支持时隙交换，该环可以被管理为多个单一逻辑实体，并且可以具有更好的带宽管理利用率。
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7.发明授权Methods and apparatus for optimum path selection in packet transmission networks 失效分组传输网络中最优路径选择的方法和装置
公开(公告)号：US5233604A
公开(公告)日：1993-08-03
申请号：US874917
申请日：1992-04-28
申请人： Hamid Ahmadi , Jeane S. Chen , Chee-Seng Chow , Roch Guerin , Levent Gun , Anthony M. Lee , Theodore E. Tedijanto
发明人： Hamid Ahmadi , Jeane S. Chen , Chee-Seng Chow , Roch Guerin , Levent Gun , Anthony M. Lee , Theodore E. Tedijanto
CPC分类号： H04L45/123 , H04L45/12
摘要： A packet communications system utilizes a route determining mechanism by identifying principal paths between the source and the destination in the system. Principal paths are minimum hop count paths with a transmission delay less than a specified threshold. Principal path links are accepted as legs of the optimum path, if feasible, i.e., if the resulting load on the link is less than a specified principal threshold. Secondary links are accepted only if the resulting load on the link is less than a specified secondary threshold, where the secondary threshold is less than the principal threshold. All paths must also have a transmission delay less than a specified threshold. Each request for a route includes the source node, the destination node, the load required, the maximum transmission delay and, if desired, the quality of service parameters which all of the legs of the route must satisfy. A modified Bellman-Ford breadth-first search algorithm is used to identify the principal links and, using these principal link identifications, determining the optimum path.
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公开(公告)号：US07433593B1
公开(公告)日：2008-10-07
申请号：US10608528
申请日：2003-06-30
CPC分类号： H04J14/0291 , H04B10/032 , H04J14/0283 , H04J14/0284
摘要： A method, system and egress switching node for maintaining a network connection in an optical network reduces the number of spans needed for reestablishing a network connection. The invention learns which channels are used by the network connection and propagates such channel assignment data to the switching nodes for storage therein. When a span failure occurs, a notification is sent to the switching nodes identifying which span has failed. The switch nodes use the notification and channel assignment data to perform protection switching such that the rerouted network connection selects the channel that was used by the network connection on the failed span. Likewise, the egress switching node uses the selected channel to drop the network connection from the protecting fibers. This enables a network connection to travel a shorter distance after a protection switch.
摘要翻译： 用于维护光网络中的网络连接的方法，系统和出口交换节点减少了重新建立网络连接所需的跨度数量。 本发明学习网络连接使用哪些信道，并将这种信道分配数据传播到交换节点以便存储在其中。 发生跨度故障时，会向交换节点发送一个通知，以确定哪个跨度发生故障。 交换机节点使用通知和信道分配数据进行保护倒换，使得重新路由的网络连接选择故障跨度上由网络连接使用的信道。 类似地，出口交换节点使用所选择的信道从保护光纤中丢弃网络连接。 这使得网络连接能够在保护开关之后行驶较短的距离。
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公开(公告)号：US07009934B1
公开(公告)日：2006-03-07
申请号：US09259263
申请日：1999-03-01
申请人： Drew D. Perkins , Theodore E. Tedijanto , Neeraj Gulati , Biao Lu
发明人： Drew D. Perkins , Theodore E. Tedijanto , Neeraj Gulati , Biao Lu
IPC分类号： G06F11/00
CPC分类号： H04Q11/0478 , H04L2012/562 , H04L2012/5627
摘要： A system and method for automatically generating a topology of a network having synchronous optical network (SONET) switches. Switches in the network pass information about itself to other switches in the network so that every switch can maintain a topology of the network. Using this knowledge of the network topology, each switch can generate a communication route within the network and automatically allot bandwidth for the route. Each switch may generate a new route in response to a line failure.
摘要翻译： 一种用于自动生成具有同步光网络（SONET）交换机的网络拓扑的系统和方法。 网络中的交换机将有关自身的信息传递到网络中的其他交换机，以便每个交换机可以维护网络的拓扑。 使用这种网络拓扑的知识，每个交换机可以在网络内生成通信路由并且自动分配该路由的带宽。 每个交换机可能会响应线路故障生成新的路由。
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10.发明授权System and method for calculating protection routes in a network prior to failure 有权故障前计算网络中保护路由的系统和方法公开(公告)号：US06859431B1
公开(公告)日：2005-02-22
申请号：US09493344
申请日：2000-01-28
CPC分类号： H04L45/28 , H04J3/14 , H04L43/0811 , H04L45/00 , H04L45/22
摘要： A system and method for automatically generating a protection route as an alternative to a working route through a network of switches prior to network failure. A switch selects the proposed protection route so that the protection route is disjoint from the working route. Next, a switch or switches determines whether bandwidth is available for the proposed protection route. If so, the protection route is set-up for activation when needed.
摘要翻译： 一种用于在网络故障之前通过交换机网络自动生成保护路由作为通过网络的工作路由的替代的系统和方法。 交换机选择提出的保护路由，使保护路由与工作路由不相交。 接下来，交换机或交换机确定所提出的保护路由的带宽是否可用。 如果是这样，则在需要时设置保护路由以进行激活。
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