公开(公告)号：US20080056258A1

公开(公告)日：2008-03-06

申请号：US11929116

申请日：2007-10-30

申请人： Shantnu Sharma ,  Snigdho Bardalai ,  Edward Harbin

发明人： Shantnu Sharma ,  Snigdho Bardalai ,  Edward Harbin

IPC分类号： H04L12/56

CPC分类号： H04L45/50 ,  H04L45/00 ,  H04L45/16

摘要： A method for multicasting data packets is provided. The method includes preparing multiple point to point connections between a root node and multiple destination nodes to establish point to multipoint connections. The method also includes receiving, at an intermediate node which is operatively connected to the root node and a plurality of the destination nodes, a data packet from the root node. In addition, the method includes determining whether the received data packet is a multicast data packet and generating a plurality of the data packets by copying the received data packet if the received data packet is a multicast data packet. Furthermore, the method includes forwarding the copied data packets to a plurality of the destination nodes.

摘要翻译： 提供了组播数据包的方法。 该方法包括在根节点和多个目的节点之间准备多个点对点连接以建立点对多点连接。 该方法还包括在根节点的可操作地连接到根节点和多个目的节点的中间节点处接收数据分组。 此外，该方法包括：如果接收到的数据分组是多播数据分组，则确定接收到的数据分组是否是多播数据分组，并通过复制接收的数据分组来生成多个数据分组。 此外，该方法包括将复制的数据分组转发到多个目的地节点。

公开(公告)号：US08989181B2

公开(公告)日：2015-03-24

申请号：US11929116

申请日：2007-10-30

申请人： Shantnu Sharma ,  Snigdho C. Bardalai ,  Edward Alton Harbin

发明人： Shantnu Sharma ,  Snigdho C. Bardalai ,  Edward Alton Harbin

IPC分类号： H04L12/28 ,  H04L12/723 ,  H04L12/701 ,  H04L12/761

CPC分类号： H04L45/50 ,  H04L45/00 ,  H04L45/16

摘要： A method for multicasting data packets is provided. The method includes preparing multiple point to point connections between a root node and multiple destination nodes to establish point to multipoint connections. The method also includes receiving, at an intermediate node which is operatively connected to the root node and a plurality of the destination nodes, a data packet from the root node. In addition, the method includes determining whether the received data packet is a multicast data packet and generating a plurality of the data packets by copying the received data packet if the received data packet is a multicast data packet. Furthermore, the method includes forwarding the copied data packets to a plurality of the destination nodes.

摘要翻译： 提供了组播数据包的方法。 该方法包括在根节点和多个目的节点之间准备多个点对点连接以建立点对多点连接。 该方法还包括在根节点的可操作地连接到根节点和多个目的节点的中间节点处接收数据分组。 此外，该方法包括：如果接收到的数据分组是多播数据分组，则确定接收到的数据分组是否是多播数据分组，并通过复制接收的数据分组来生成多个数据分组。 此外，该方法包括将复制的数据分组转发到多个目的地节点。

公开(公告)号：US06862288B2

公开(公告)日：2005-03-01

申请号：US09761144

申请日：2001-01-16

申请人： Shantnu Sharma ,  Peter W. Bretschneider ,  Robert H. Constantin ,  Mark A. W. Stewart ,  Sajin R. Valoth ,  Mashood Illikkal

发明人： Shantnu Sharma ,  Peter W. Bretschneider ,  Robert H. Constantin ,  Mark A. W. Stewart ,  Sajin R. Valoth ,  Mashood Illikkal

IPC分类号： H04L12/24 ,  H04L12/56

CPC分类号： H04L45/42 ,  H04L41/0806 ,  H04L41/085 ,  H04L41/12 ,  H04L45/02 ,  H04L45/26 ,  H04L45/50

摘要： A highly available communications system capable of circuit reestablishment and tear-down without manual intervention. The communications system includes a plurality of nodes interconnected by a plurality of communications paths to form at least one communications network. The nodes forward control packets on the network by way of a signaling protocol employing an out-of-band control technique. At least a portion of the nodes comprises a software configuration including a topology manager and a protocol manager. The protocol manager is operative to determine whether a control path is operational and whether a data transmission channel along a corresponding data path is established. In the event the control path is not operational, the protocol manager maintains the data transmission channel along the data path so long as the channel is established. The topology manager is operative to acquire network topology data, and the protocol manager is further operative to receive the topology data, deduce network topology changes therefrom, and reestablish and tear-down communications paths interconnecting the nodes based at least in part on the deduced topology changes.

摘要翻译： 一种高度可用的通信系统，无需手动干预即可重新建立和拆除电路。 通信系统包括通过多个通信路径互连以形成至少一个通信网络的多个节点。 节点通过采用带外控制技术的信令协议转发网络上的分组。 节点的至少一部分包括包括拓扑管理器和协议管理器的软件配置。 协议管理器可操作以确定控制路径是否可操作以及是否建立沿着相应数据路径的数据传输信道。 在控制路径不可操作的情况下，只要通道建立，协议管理器就沿数据路径维护数据传输通道。 拓扑管理器用于获取网络拓扑数据，并且协议管理器进一步操作以接收拓扑数据，从其中推导出网络拓扑变化，并且至少部分地基于推导的拓扑来重新建立和拆除互连节点的通信路径 变化。

公开(公告)号：US06999418B2

公开(公告)日：2006-02-14

申请号：US10029543

申请日：2001-12-21

申请人： Shantnu Sharma ,  Stephen J. Unger

发明人： Shantnu Sharma ,  Stephen J. Unger

IPC分类号： H04J1/16

CPC分类号： H04L45/00 ,  H04L45/32

摘要： A network device monitors the flooding of frames and obtains information to update a port's forwarding table to reduce unnecessary frame flooding. An unknown network address and a count are maintained at a first port, the unknown address being an address for which there is no information identifying another port to which unicast frames containing the address are to be forwarded, the count identifying the number of times frames containing the unknown address have been flooded from the first port to other ports. The count is incremented each time a unicast frame containing the unknown address is flooded from the first port to the other ports. When the count reaches a threshold, it is determined whether there is information at another port that identifies a specific port to which frames containing the unknown address are to be forwarded, and if so then the information is transferred to the first port, whereupon the unknown address becomes known at the first port. Subsequently, unicast frames received at the first port that contain the now known address are forwarded to only the specific port rather than being flooded.

公开(公告)号：US20050083926A1

公开(公告)日：2005-04-21

申请号：US10686086

申请日：2003-10-15

申请人： Robin Mathews ,  Shantnu Sharma

发明人： Robin Mathews ,  Shantnu Sharma

IPC分类号： H04L29/06 ,  H04L29/08 ,  H04L12/56

CPC分类号： H04L63/0428 ,  H04L67/14 ,  H04L69/329

摘要： A method includes, when a packet is to be sent over a secured connection, determining if the secured connection is set up. The method also includes, when the secured connection is not set up, storing the packet and, after storing the packet, when the secure connection is set up, retrieving the packet and transmitting the packet over the secured connection.

摘要翻译： 一种方法包括：当要通过安全连接发送分组时，确定是否建立了安全连接。 该方法还包括当安全连接未建立时，存储分组，并且在存储分组之后，当安全连接建立时，检索分组并通过安全连接发送分组。

公开(公告)号：US20050078688A1

公开(公告)日：2005-04-14

申请号：US10683079

申请日：2003-10-10

申请人： Shantnu Sharma ,  Vikrant Karan ,  Michael Mercurio ,  Daniel Byron

发明人： Shantnu Sharma ,  Vikrant Karan ,  Michael Mercurio ,  Daniel Byron

IPC分类号： H04L12/28 ,  H04L12/56

CPC分类号： H04L12/2801 ,  H04L47/24 ,  H04N21/6118

摘要： A cable modem termination system includes a data over cable service interface specification (DOCSIS) subsystem that manages a flow associated with a gate and a gate manager (GM) that manages a state of the gate. When the flow is admitted by the DOCSIS subsystem, the DOCSIS subsystem signals to the GM to transition the state of the gate to a reserved state. The GM transitions the state of the gate to the reserved state when the DOCSIS subsystem signals to the GM to transition the state of the gate to the reserved state. When the flow is activated by the DOCSIS subsystem, the DOCSIS subsystem signals to the GM to transition the state of the gate to a committed state. The GM transitions the state of the gate to the committed state when the DOCSIS subsystem signals to the GM to transition the state of the gate to the committed state.

摘要翻译： 电缆调制解调器终端系统包括管理与门相关联的流的数据通过电缆服务接口规范（DOCSIS）子系统和管理门的状态的门管理器（GM）。 当DOCSIS子系统允许流程时，DOCSIS子系统向GM通信，将门的状态转变为保留状态。 当DOCSIS子系统向GM转发时，将门的状态转换到保留状态，以将门的状态转换到保留状态。 当DOCSIS子系统激活流程时，DOCSIS子系统发信号到GM，以将门的状态转变为承诺状态。 当DOCSIS子系统向GM转发时，将门的状态转变为承诺状态，以将门的状态转变为已执行状态。

公开(公告)号：US07280479B2

公开(公告)日：2007-10-09

申请号：US10683079

申请日：2003-10-10

申请人： Shantnu Sharma ,  Vikrant Karan ,  Michael Mercurio ,  Daniel Byron

发明人： Shantnu Sharma ,  Vikrant Karan ,  Michael Mercurio ,  Daniel Byron

IPC分类号： H04J3/16 ,  H04L12/66 ,  H04L12/28

CPC分类号： H04L12/2801 ,  H04L47/24 ,  H04N21/6118

摘要： A cable modem termination system includes a data over cable service interface specification (DOCSIS) subsystem that manages a flow associated with a gate and a gate manager (GM) that manages a state of the gate. When the flow is admitted by the DOCSIS subsystem, the DOCSIS subsystem signals to the GM to transition the state of the gate to a reserved state. The GM transitions the state of the gate to the reserved state when the DOCSIS subsystem signals to the GM to transition the state of the gate to the reserved state. When the flow is activated by the DOCSIS subsystem, the DOCSIS subsystem signals to the GM to transition the state of the gate to a committed state. The GM transitions the state of the gate to the committed state when the DOCSIS subsystem signals to the GM to transition the state of the gate to the committed state.

摘要翻译： 电缆调制解调器终端系统包括管理与门相关联的流的数据通过电缆服务接口规范（DOCSIS）子系统和管理门的状态的门管理器（GM）。 当DOCSIS子系统允许流程时，DOCSIS子系统向GM通信，将门的状态转变为保留状态。 当DOCSIS子系统向GM转发时，将门的状态转换到保留状态，以将门的状态转换到保留状态。 当DOCSIS子系统激活流程时，DOCSIS子系统发信号到GM，以将门的状态转变为承诺状态。 当DOCSIS子系统向GM转发时，将门的状态转变为承诺状态，以将门的状态转变为已执行状态。

公开(公告)号：US20050078689A1

公开(公告)日：2005-04-14

申请号：US10683302

申请日：2003-10-10

申请人： Shantnu Sharma ,  Vikrant Karan ,  Michael Mercurio ,  Daniel Byron

发明人： Shantnu Sharma ,  Vikrant Karan ,  Michael Mercurio ,  Daniel Byron

IPC分类号： H04L12/24 ,  H04L12/28 ,  H04L29/06

CPC分类号： H04L65/1026 ,  H04L12/2801 ,  H04L29/06027 ,  H04L41/0893 ,  H04L65/1036 ,  H04L65/1043

摘要： An access switch includes a cable modem termination system with a gate manager executing thereon and a route server, in communication with the cable modem termination system, that includes a common open policy service client executing on the route server. The switch further includes a network interface module, in communication with the cable modem termination system and the route server, that, when the network interface module is coupled to a network, communicates common open policy service messages between the common open policy service client and a call management server included in the network. When a first common open policy service message that includes a gate command is received by the common open policy service client, the common open policy service client sends a second message derived from the first common open policy service message to the gate manager. The gate manager receives the second message and processes the gate command.

摘要翻译： 接入交换机包括具有执行在其上的门控管理器的电缆调制解调器终端系统和与电缆调制解调器终端系统通信的路由服务器，其包括在路由服务器上执行的公共开放策略服务客户端。 交换机还包括与电缆调制解调器终端系统和路由服务器通信的网络接口模块，当网络接口模块耦合到网络时，在公共开放策略服务客户端和 呼叫管理服务器包含在网络中。 当公共开放策略服务客户端接收到包含门命令的第一公共开放策略服务消息时，公共开放策略服务客户端将从第一公共开放策略服务消息导出的第二消息发送到门管理器。 门管理器接收第二个消息并处理门命令。

公开(公告)号：US20050078609A1

公开(公告)日：2005-04-14

申请号：US10682981

申请日：2003-10-10

申请人： Shantnu Sharma ,  Ravikiran Valmikam

发明人： Shantnu Sharma ,  Ravikiran Valmikam

IPC分类号： H04L12/28 ,  H04M7/00

CPC分类号： H04M7/0069 ,  H04L12/2801 ,  H04M15/56 ,  H04M2215/202

摘要： An access switch includes at least one cable modem termination system. The cable modem termination system (CMTS), when coupled to a hybrid-fiber coaxial cable network, is in communication with a media terminal adapter. The CMTS includes a multimedia service subsystem and a data over cable service interface specification (DOCSIS) subsystem having at least one user configurable parameter. The access switch further includes a network interface module, in communication with the CMTS, that, when the network interface module is coupled to a network, communicates DOCSIS flows between the network and the CMTS. The access switch further includes a management module that, when the access switch is coupled to a management application, receives configuration data to configure the DOCSIS subsystem. When the DOCSIS subsystem is configured, the multimedia subsystem automatically provides multimedia service without additional configuration thereof.

摘要翻译： 接入交换机包括至少一个电缆调制解调器终端系统。 电缆调制解调器终端系统（CMTS）当耦合到混合光纤同轴电缆网络时，与媒体终端适配器通信。 CMTS包括多媒体服务子系统和具有至少一个用户可配置参数的数据穿越电缆服务接口规范（DOCSIS）子系统。 接入交换机还包括与CMTS通信的网络接口模块，当网络接口模块耦合到网络时，在网络和CMTS之间传送DOCSIS流。 所述接入交换机还包括管理模块，当所述接入交换机耦合到管理应用时，所述管理模块接收配置数据以配置所述DOCSIS子系统。 当配置DOCSIS子系统时，多媒体子系统自动提供多媒体服务而无需其他配置。

公开(公告)号：US07372853B2

公开(公告)日：2008-05-13

申请号：US10607442

申请日：2003-06-25

申请人： Shantnu Sharma ,  Snigdho C. Bardalai ,  Edward Alton Harbin

发明人： Shantnu Sharma ,  Snigdho C. Bardalai ,  Edward Alton Harbin

IPC分类号： H04L12/28

CPC分类号： H04L45/50 ,  H04L45/00 ,  H04L45/16

摘要： According to one embodiment of the invention, a method for multicasting data packets is provided. The method includes determining that a data packet is to be multicast from an intermediate node to a plurality of destination nodes in a branch of a point-to-multipoint MPLS connection tree. The intermediate node has a plurality of connection interfaces. The method also includes establishing only one MPLS tunnel in response to the determination. The only one MPLS tunnel is for carrying the data packet to be multicast and established between a node and the intermediate node. The method also includes connecting each destination node to the intermediate node through a particular one of the connection interfaces. The method also includes receiving the data packet from the node at the intermediate node through the only one MPLS tunnel. The method also includes forwarding the data packet to the plurality of destination nodes through the connection interfaces identified in a multicast table.

摘要翻译： 根据本发明的一个实施例，提供了一种用于组播数据分组的方法。 该方法包括确定数据分组将在点对多点MPLS连接树的分支中的中间节点到多个目的地节点的多播。 中间节点具有多个连接接口。 该方法还包括响应于确定仅建立一个MPLS隧道。 唯一一个MPLS隧道用于承载要在组播节点和中间节点之间建立的数据包。 该方法还包括通过特定的一个连接接口将每个目的地节点连接到中间节点。 该方法还包括通过仅一个MPLS隧道从中间节点的节点接收数据包。 该方法还包括通过多播表中标识的连接接口将数据分组转发到多个目的节点。