公开(公告)号：US20120218898A1

公开(公告)日：2012-08-30

申请号：US12932604

申请日：2011-02-28

申请人： Yiqun Cai ,  Heidi Ou ,  Liming Wei ,  Apoorva Karan

发明人： Yiqun Cai ,  Heidi Ou ,  Liming Wei ,  Apoorva Karan

IPC分类号： H04L12/26 ,  H04L12/56

CPC分类号： H04L45/125 ,  H04L12/1886 ,  H04L45/24

摘要： In one embodiment, a method includes identifying a packet at an upstream node in communication with a source and in communication with a downstream node through equal cost multiple paths including first and second multi-access networks, the packet transmitted on the first multi-access network and associated with a multicast group, and transmitting from the upstream node a request to the downstream node to join the group on the second multi-access network, if the upstream node is already transmitting data to the group on the second multi-access network, or a bandwidth utilization at the first multi-access network exceeds a specified threshold. An apparatus is also disclosed.

摘要翻译： 在一个实施例中，一种方法包括在与源通信的上游节点处识别分组，并且通过包括第一和第二多接入网络的等价多路径与下游节点通信，所述分组在第一多址网络 并且与组播组相关联，并且如果所述上游节点已经在所述第二多址接入网络上向所述组发送数据，则从所述上游节点向所述下游节点发送加入所述第二多址网络上的组的请求， 或者第一多接入网络的带宽利用率超过规定的阈值。 还公开了一种装置。

公开(公告)号：US08711853B2

公开(公告)日：2014-04-29

申请号：US12823753

申请日：2010-06-25

申请人： Yiqun Cai ,  Heidi Ou

发明人： Yiqun Cai ,  Heidi Ou

IPC分类号： H04L12/28

CPC分类号： H04L45/16 ,  H04L45/22 ,  H04L45/28

摘要： A method is provided in one example and includes evaluating multiple paths in a network in order to execute a reverse path forwarding decision for multicast traffic associated with a source. The method may also include selecting a second network path based on a first network path previously been designated as a route for the multicast traffic associated with the source. The first network path and a second network path differ by at least one network element. The method further includes receiving at least one of a first data stream and a second data stream, wherein the first data stream is associated with the first network path and the second data stream is associated with the second network path.

摘要翻译： 在一个示例中提供了一种方法，并且包括评估网络中的多个路径，以便执行与源相关联的多播流量的反向路径转发决策。 该方法还可以包括基于先前被指定为与源相关联的多播流量的路由的第一网络路径来选择第二网络路径。 第一网络路径和第二网络路径由至少一个网络元件不同。 该方法还包括接收第一数据流和第二数据流中的至少一个，其中第一数据流与第一网络路径相关联，第二数据流与第二网络路径相关联。

公开(公告)号：US08184628B2

公开(公告)日：2012-05-22

申请号：US12584008

申请日：2009-08-28

申请人： Yiqun Cai ,  Toerless Eckert ,  Heidi Ou

发明人： Yiqun Cai ,  Toerless Eckert ,  Heidi Ou

IPC分类号： H04L12/28

CPC分类号： H04L12/1877 ,  H04L12/185 ,  H04L45/16 ,  H04L45/24 ,  H04L45/28

摘要： In one embodiment, a method includes receiving a join message from a receiver at a receiver edge router, the join message identifying a source and a group, and creating at least two forwarding trees for transmitting multicast data streams comprising duplicate data to the receiver edge router. The forwarding trees include a root at a source edge router in communication with the source, and different network paths. The method further includes receiving a packet from one of the forwarding trees and processing the received packet to determine if the packet is a duplicate of another packet received at the receiver edge router. If the packet is a duplicate packet, it is discarded. If the packet is not a duplicate, it is forwarded to the receiver. An apparatus is also disclosed.

摘要翻译： 在一个实施例中，一种方法包括从接收器边缘路由器处的接收器接收加入消息，所述加入消息标识源和组，以及创建至少两个转发树，用于将包含重复数据的多播数据流发送到接收机边缘路由器 。 转发树包括与源通信的源边缘路由器的根，以及不同的网络路径。 该方法还包括从转发树之一接收分组并处理所接收的分组以确定该分组是否是在接收机边缘路由器处接收到的另一分组的副本。 如果数据包是重复数据包，则丢弃它。 如果数据包不重复，则转发给接收者。 还公开了一种装置。

公开(公告)号：US09071546B2

公开(公告)日：2015-06-30

申请号：US13068789

申请日：2011-05-20

申请人： Yiqun Cai ,  Heidi Ou

发明人： Yiqun Cai ,  Heidi Ou

IPC分类号： H04L12/28 ,  H04L12/721 ,  H04L12/761 ,  H04L12/707 ,  H04L12/18

CPC分类号： H04L45/16 ,  H04L12/185 ,  H04L45/22 ,  H04L45/38 ,  H04L45/7453

摘要： In one embodiment, a method includes transmitting a packet from a router located in a communication path between a source and a receiver, the load balancing packet having one or more values used to select a group designated router from a list of candidate group designated routers for multicast traffic streams, selecting the router as said group designated router for one or more of the multicast traffic streams, and forwarding traffic for the one or more multicast traffic streams to the receiver. The candidate group designated routers are last hop routers for transmitting the multicast traffic streams to a common link connected to the receiver. An apparatus is also disclosed.

摘要翻译： 在一个实施例中，一种方法包括从位于源和接收机之间的通信路径中的路由器发送分组，所述负载平衡分组具有用于从候选组指定路由器的列表中选择组指定路由器的一个或多个值， 组播业务流，为一个或多个多播业务流选择路由器作为所述组指定路由器，以及将一个或多个多播业务流的流量转发到接收机。 候选组指定路由器是用于将多播业务流发送到连接到接收机的公共链路的最后一跳路由器。 还公开了一种装置。

公开(公告)号：US20110051727A1

公开(公告)日：2011-03-03

申请号：US12584008

申请日：2009-08-28

申请人： Yiqun Cai ,  Toerless Eckert ,  Heidi Ou

发明人： Yiqun Cai ,  Toerless Eckert ,  Heidi Ou

IPC分类号： H04L12/56

CPC分类号： H04L12/1877 ,  H04L12/185 ,  H04L45/16 ,  H04L45/24 ,  H04L45/28

摘要： In one embodiment, a method includes receiving a join message from a receiver at a receiver edge router, the join message identifying a source and a group, and creating at least two forwarding trees for transmitting multicast data streams comprising duplicate data to the receiver edge router. The forwarding trees include a root at a source edge router in communication with the source, and different network paths. The method further includes receiving a packet from one of the forwarding trees and processing the received packet to determine if the packet is a duplicate of another packet received at the receiver edge router. If the packet is a duplicate packet, it is discarded. If the packet is not a duplicate, it is forwarded to the receiver. An apparatus is also disclosed.

摘要翻译： 在一个实施例中，一种方法包括从接收器边缘路由器处的接收器接收加入消息，所述加入消息标识源和组，以及创建至少两个转发树，用于将包含重复数据的多播数据流发送到接收机边缘路由器 。 转发树包括与源通信的源边缘路由器的根，以及不同的网络路径。 该方法还包括从转发树之一接收分组并处理所接收的分组以确定该分组是否是在接收机边缘路由器处接收到的另一分组的副本。 如果数据包是重复数据包，则丢弃它。 如果数据包不重复，则转发给接收者。 还公开了一种装置。

公开(公告)号：US09240942B2

公开(公告)日：2016-01-19

申请号：US12932604

申请日：2011-02-28

申请人： Yiqun Cai ,  Heidi Ou ,  Liming Wei ,  Apoorva Karan

发明人： Yiqun Cai ,  Heidi Ou ,  Liming Wei ,  Apoorva Karan

IPC分类号： H04L12/721 ,  H04L12/729 ,  H04L12/18 ,  H04L12/707

CPC分类号： H04L45/125 ,  H04L12/1886 ,  H04L45/24

摘要： In one embodiment, a method includes identifying a packet at an upstream node in communication with a source and in communication with a downstream node through equal cost multiple paths including first and second multi-access networks, the packet transmitted on the first multi-access network and associated with a multicast group, and transmitting from the upstream node a request to the downstream node to join the group on the second multi-access network, if the upstream node is already transmitting data to the group on the second multi-access network, or a bandwidth utilization at the first multi-access network exceeds a specified threshold. An apparatus is also disclosed.

摘要翻译： 在一个实施例中，一种方法包括在与源通信的上游节点处识别分组，并且通过包括第一和第二多接入网络的等价多路径与下游节点通信，所述分组在第一多址网络 并且与组播组相关联，并且如果所述上游节点已经在所述第二多址接入网络上向所述组发送数据，则从所述上游节点向所述下游节点发送加入所述第二多址网络上的组的请求， 或者第一多接入网络的带宽利用率超过规定的阈值。 还公开了一种装置。

公开(公告)号：US20120294308A1

公开(公告)日：2012-11-22

申请号：US13068789

申请日：2011-05-20

申请人： Yiqun Cai ,  Heidi Ou

发明人： Yiqun Cai ,  Heidi Ou

IPC分类号： H04L12/56

CPC分类号： H04L45/16 ,  H04L12/185 ,  H04L45/22 ,  H04L45/38 ,  H04L45/7453

摘要： In one embodiment, a method includes transmitting a packet from a router located in a communication path between a source and a receiver, the load balancing packet having one or more values used to select a group designated router from a list of candidate group designated routers for multicast traffic streams, selecting the router as said group designated router for one or more of the multicast traffic streams, and forwarding traffic for the one or more multicast traffic streams to the receiver. The candidate group designated routers are last hop routers for transmitting the multicast traffic streams to a common link connected to the receiver. An apparatus is also disclosed.

摘要翻译： 在一个实施例中，一种方法包括从位于源和接收机之间的通信路径中的路由器发送分组，所述负载平衡分组具有用于从候选组指定路由器的列表中选择组指定路由器的一个或多个值， 组播业务流，为一个或多个多播业务流选择路由器作为所述组指定路由器，以及将一个或多个多播业务流的流量转发到接收机。 候选组指定路由器是用于将多播业务流发送到连接到接收机的公共链路的最后一跳路由器。 还公开了一种装置。

公开(公告)号：US20110317695A1

公开(公告)日：2011-12-29

申请号：US12823753

申请日：2010-06-25

申请人： Yiqun Cai ,  Heidi Ou

发明人： Yiqun Cai ,  Heidi Ou

IPC分类号： H04L12/56

CPC分类号： H04L45/16 ,  H04L45/22 ,  H04L45/28

摘要： A method is provided in one example and includes evaluating multiple paths in a network in order to execute a reverse path forwarding decision for multicast traffic associated with a source. The method may also include selecting a second network path based on a first network path previously been designated as a route for the multicast traffic associated with the source. The first network path and a second network path differ by at least one network element. The method further includes receiving at least one of a first data stream and a second data stream, wherein the first data stream is associated with the first network path and the second data stream is associated with the second network path.

摘要翻译： 在一个示例中提供了一种方法，并且包括评估网络中的多个路径，以便执行与源相关联的多播流量的反向路径转发决策。 该方法还可以包括基于先前被指定为与源相关联的多播流量的路由的第一网络路径来选择第二网络路径。 第一网络路径和第二网络路径由至少一个网络元件不同。 该方法还包括接收第一数据流和第二数据流中的至少一个，其中第一数据流与第一网络路径相关联，第二数据流与第二网络路径相关联。

公开(公告)号：US07656856B2

公开(公告)日：2010-02-02

申请号：US11116493

申请日：2005-04-28

申请人： Heidi Ou ,  Steven V. Luong ,  Rena Whei-Ming Yang

发明人： Heidi Ou ,  Steven V. Luong ,  Rena Whei-Ming Yang

IPC分类号： H04L12/28

CPC分类号： H04L45/04 ,  H04L45/02 ,  H04L45/12 ,  H04L45/26

摘要： Methods, systems, and apparatuses for transmitting link state packet (LSP) through a network are provided. The method includes dividing the LSP into LSP fragments having respective fragment numbers, transmitting the LSP fragments repetitively through the network, identifying at least one LSP fragment that is updated while the LSP fragments are being transmitted, and retransmitting the identified LSP fragments. The transmitted updated LSP is used for processing the Shortest Path First algorithm to identify accurately the shortest path that can be used to establish communication in the network.

摘要翻译： 提供了通过网络传输链路状态分组（LSP）的方法，系统和装置。 该方法包括将LSP划分成具有相应片段号的LSP片段，通过网络重复发送LSP片段，识别在发送LSP片段时更新的至少一个LSP片段，以及重传所识别的LSP片段。 发送的更新的LSP用于处理最短路径优先算法，以准确地识别可用于在网络中建立通信的最短路径。

公开(公告)号：US09008118B2

公开(公告)日：2015-04-14

申请号：US13473995

申请日：2012-05-17

申请人： Yongkui Han ,  Heidi Ou

发明人： Yongkui Han ,  Heidi Ou

IPC分类号： H04J3/16 ,  H04J3/22 ,  H04L12/28 ,  H04L12/56 ,  H04J3/26 ,  H04N21/6405 ,  H04L12/18

CPC分类号： H04N21/6405 ,  H04L12/184 ,  H04L12/4633

摘要： In one embodiment, a relay device of a network, which is reachable by a source device via only a non-multicast network, receives a non-multicast that encapsulates a multicast message. The relay device is connected to a sub-network of one or more devices. The relay device decapsulates the unicast message to determine the multicast message, re-encapsulates the multicast message as a relay-sourced multicast message, and multicasts the relay-sourced multicast message to the one or more devices within the sub-network.

摘要翻译： 在一个实施例中，由源设备经由非多播网络可达的网络的中继设备接收封装多播消息的非多播。 中继设备连接到一个或多个设备的子网络。 中继设备对单播消息进行解封装以确定多播消息，将多播消息重新封装为中继源多播消息，并将中继源多播消息多播到子网内的一个或多个设备。