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公开(公告)号：US07646739B2
公开(公告)日：2010-01-12
申请号：US11099245
申请日：2005-04-05
IPC分类号： H04H20/71
CPC分类号： H04L12/1836 , H04L12/5692 , H04L45/00 , H04L45/16
摘要： Various systems and methods are disclosed for performing multicast routing over unidirectional links. For example, one method involves maintaining a multicast adjacency state, which is associated with an interface that is coupled to receive messages from a network device via a unidirectional link. The multicast adjacency state identifies a network address of the network device. The method also involves sending a multicast protocol control message to the network device via a bidirectional path. The destination address of the network multicast protocol control message is the network address in the multicast adjacency state.
摘要翻译： 公开了用于通过单向链路执行组播路由的各种系统和方法。 例如，一种方法涉及维护多播邻接状态，该状态与被耦合以经由单向链路从网络设备接收消息的接口相关联。 组播邻接状态标识网络设备的网络地址。 该方法还涉及通过双向路径向网络设备发送组播协议控制消息。 网络组播协议控制消息的目的地址是组播邻接状态的网络地址。
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公开(公告)号：US08144628B2
公开(公告)日：2012-03-27
申请号：US11333843
申请日：2006-01-18
CPC分类号： H04L45/00 , H04L12/185 , H04L12/1877 , H04L45/16
摘要： Various techniques for exchanging control messages in order to gracefully reroute multicast traffic are disclosed. For example, one method involves sending a join message for a multicast group towards a root of a new multicast tree and forwarding multicast traffic, addressed to the multicast group, on a current multicast tree until an acknowledgment corresponding to the join message is received. The new multicast tree can be identified in response to detection of a topology change within the network. Until the acknowledgment is received, multicast traffic that is received via the new multicast tree can be dropped.
摘要翻译： 公开了用于交换控制消息以便正确地重新路由组播业务的各种技术。 例如，一种方法包括向新的多播树的根发送一个组播组的加入消息，并在当前的多播树上转发寻址到组播组的组播流，直到接收到与加入消息对应的确认。 可以响应于网络内的拓扑变化的检测来识别新的多播树。 在接收到确认之前，可以删除通过新的多播树接收的组播流量。
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公开(公告)号：US07573888B2
公开(公告)日：2009-08-11
申请号：US11118533
申请日：2005-04-29
IPC分类号： H04L12/28
CPC分类号： H04L12/1836 , H04L12/5692 , H04L45/00 , H04L45/16
摘要： Various systems and methods are disclosed for performing multicast routing over unidirectional links. For example, one method involves maintaining a multicast adjacency state, which is associated with an interface that is coupled to receive messages from a network device via a unidirectional link. The multicast adjacency state identifies a network address of the network device. The method also involves sending a multicast protocol control message to the network device via a bidirectional path. The destination address of the network multicast protocol control message is the network address in the multicast adjacency state.
摘要翻译： 公开了用于通过单向链路执行组播路由的各种系统和方法。 例如，一种方法涉及维护多播邻接状态，该状态与被耦合以经由单向链路从网络设备接收消息的接口相关联。 组播邻接状态标识网络设备的网络地址。 该方法还涉及通过双向路径向网络设备发送组播协议控制消息。 网络组播协议控制消息的目的地址是组播邻接状态的网络地址。
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公开(公告)号：US20070133530A1
公开(公告)日：2007-06-14
申请号：US11333843
申请日：2006-01-18
IPC分类号： H04L12/56
CPC分类号： H04L45/00 , H04L12/185 , H04L12/1877 , H04L45/16
摘要： Various techniques for exchanging control messages in order to gracefully reroute multicast traffic are disclosed. For example, one method involves sending a join message for a multicast group towards a root of a new multicast tree and forwarding multicast traffic, addressed to the multicast group, on a current multicast tree until an acknowledgment corresponding to the join message is received. The new multicast tree can be identified in response to detection of a topology change within the network. Until the acknowledgment is received, multicast traffic that,is received via the new multicast tree can be dropped.
摘要翻译： 公开了用于交换控制消息以便正确地重新路由组播业务的各种技术。 例如，一种方法包括向新的多播树的根发送一个组播组的加入消息，并在当前的多播树上转发寻址到组播组的组播流，直到接收到与加入消息对应的确认。 可以响应于网络内的拓扑变化的检测来识别新的多播树。 直到接收到确认，可以删除通过新的多播树接收到的多播流量。
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5.发明授权Rerouting multicast traffic in response to detecting imminent network disruption 有权响应于即将发生的网络中断，重新路由多播流量公开(公告)号：US07953027B2
公开(公告)日：2011-05-31
申请号：US11355525
申请日：2006-02-16
CPC分类号： H04L45/16 , H04L12/1868 , H04L45/02 , H04L45/28 , H04L45/48
摘要： Various systems and methods for rerouting multicast traffic in response to detecting imminent network disruption are disclosed. One method involves detecting an imminent topology change and, in response, identifying a new multicast distribution tree for a multicast group. A join message for the multicast group is then sent towards a root of the new multicast distribution tree. Multicast traffic addressed to the multicast group continues to be forwarded via the current multicast distribution tree, subsequent to sending the join message. The multicast traffic is not forwarded via the new multicast distribution tree until one or more multicast data packets have been received via the new multicast distribution tree.
摘要翻译： 公开了响应于即将发生的网络中断而重新路由多播流量的各种系统和方法。 一种方法涉及检测即将发生的拓扑变化，并且作为响应，识别组播组的新的多播分发树。 然后将多播组的加入消息发送到新的多播分发树的根。 发送加入消息后，寻址到组播组的组播流量将继续通过当前的组播分发树进行转发。 组播流量不会通过新的组播分发树转发，直到通过新的组播分发树接收到一个或多个组播数据包。
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公开(公告)号：US20060221861A1
公开(公告)日：2006-10-05
申请号：US11118533
申请日：2005-04-29
CPC分类号： H04L12/1836 , H04L12/5692 , H04L45/00 , H04L45/16
摘要： Various systems and methods are disclosed for performing multicast routing over unidirectional links. For example, one method involves maintaining a multicast adjacency sate, which is associated with an interface that is coupled to receive messages from a network device via a unidirectional link. The multicast adjacency state identifies a network address of the network device. The method also involves sending a multicast protocol control message to the network device via a bidirectional path. The destination address of the network multicast protocol control message is the network address in the multicast adjacency state.
摘要翻译： 公开了用于通过单向链路执行组播路由的各种系统和方法。 例如，一种方法涉及维护多播邻接状态，其与被耦合以经由单向链路从网络设备接收消息的接口相关联。 组播邻接状态标识网络设备的网络地址。 该方法还涉及通过双向路径向网络设备发送组播协议控制消息。 网络组播协议控制消息的目的地址是组播邻接状态的网络地址。
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公开(公告)号：US20120188909A1
公开(公告)日：2012-07-26
申请号：US13430230
申请日：2012-03-26
CPC分类号： H04L45/00 , H04L12/185 , H04L12/1877 , H04L45/16
摘要： Various techniques for exchanging control messages in order to gracefully reroute multicast traffic are disclosed. For example, one method involves sending a join message for a multicast group towards a root of a new multicast tree and forwarding multicast traffic, addressed to the multicast group, on a current multicast tree until an acknowledgment corresponding to the join message is received. The new multicast tree can be identified in response to detection of a topology change within the network. Until the acknowledgment is received, multicast traffic that is received via the new multicast tree can be dropped.
摘要翻译： 公开了用于交换控制消息以便正确地重新路由组播业务的各种技术。 例如，一种方法包括向新的多播树的根发送一个组播组的加入消息，并在当前的多播树上转发寻址到组播组的组播流，直到接收到与加入消息对应的确认。 可以响应于网络内的拓扑变化的检测来识别新的多播树。 在接收到确认之前，可以删除通过新的多播树接收的组播流量。
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公开(公告)号：US20060221962A1
公开(公告)日：2006-10-05
申请号：US11099245
申请日：2005-04-05
CPC分类号： H04L12/1836 , H04L12/5692 , H04L45/00 , H04L45/16
摘要： Various systems and methods are disclosed for performing multicast routing over unidirectional links. For example, one method involves maintaining a multicast adjacency state, which is associated with an interface that is coupled to receive messages from a network device via a unidirectional link. The multicast adjacency state identifies a network address of the network device. The method also involves sending a multicast protocol control message to the network device via a bidirectional path. The destination address of the network multicast protocol control message is the network address in the multicast adjacency state.
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公开(公告)号：US08879429B2
公开(公告)日：2014-11-04
申请号：US13430230
申请日：2012-03-26
IPC分类号： H04L12/28 , H04L12/56 , H04L12/18 , H04L12/701 , H04L12/761
CPC分类号： H04L45/00 , H04L12/185 , H04L12/1877 , H04L45/16
摘要： Various techniques for exchanging control messages in order to gracefully reroute multicast traffic are disclosed. For example, one method involves sending a join message for a multicast group towards a root of a new multicast tree and forwarding multicast traffic, addressed to the multicast group, on a current multicast tree until an acknowledgment corresponding to the join message is received. The new multicast tree can be identified in response to detection of a topology change within the network. Until the acknowledgment is received, multicast traffic that is received via the new multicast tree can be dropped.
摘要翻译： 公开了用于交换控制消息以便正确地重新路由组播业务的各种技术。 例如，一种方法包括向新的多播树的根发送一个组播组的加入消息，并在当前的多播树上转发寻址到组播组的组播流，直到接收到与加入消息对应的确认。 可以响应于网络内的拓扑变化的检测来识别新的多播树。 在接收到确认之前，可以删除通过新的多播树接收的组播流量。
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10.发明申请Rerouting multicast traffic in response to detecting imminent network disruption 有权响应于即将发生的网络中断，重新路由多播流量公开(公告)号：US20070189193A1
公开(公告)日：2007-08-16
申请号：US11355525
申请日：2006-02-16
IPC分类号： H04L12/28
CPC分类号： H04L45/16 , H04L12/1868 , H04L45/02 , H04L45/28 , H04L45/48
摘要： Various systems and method for rerouting multicast traffic in response to detecting imminent network disruption are disclosed. One method involves detecting an imminent topology change and, in response, identifying a new multicast distribution tree for a multicast group. A join message for the multicast group is then sent towards a root of the new multicast distribution tree. Multicast traffic addressed to the multicast group continues to be forwarded via the current multicast distribution tree, subsequent to sending the join message. The multicast traffic is not forwarded via the new multicast distribution tree until one or more multicast data packets have been received via the new multicast distribution tree.
摘要翻译： 公开了响应于即将发生的网络中断而重新组播多播流量的各种系统和方法。 一种方法涉及检测即将发生的拓扑变化，并且作为响应，识别组播组的新的多播分发树。 然后将多播组的加入消息发送到新的多播分发树的根。 发送加入消息后，寻址到组播组的组播流量将继续通过当前的组播分发树进行转发。 组播流量不会通过新的组播分发树转发，直到通过新的组播分发树接收到一个或多个组播数据包。
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