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1. 发明授权

US08427943B2 Bandwidth-aware multicast load balancing on a multi-interface host 有权
标题翻译：多接口主机上的带宽感知组播负载均衡
公开(公告)号：US08427943B2
公开(公告)日：2013-04-23
申请号：US12021230
申请日：2008-01-28
申请人： Joshua Gahm , David Oran , Toerless Eckert
发明人： Joshua Gahm , David Oran , Toerless Eckert
IPC分类号： H04L12/26
CPC分类号： H04L12/185 , G06F9/5011 , H04L47/10 , H04L47/125 , H04L47/15
摘要： In one embodiment, a network device having a plurality of network interfaces maintains a database tracking multicast memberships associated with the network interfaces. The network device then uses the database for load balancing received multicast traffic over the network interfaces.
摘要翻译：在一个实施例中，具有多个网络接口的网络设备维护数据库跟踪与网络接口相关联的多播成员资格。网络设备然后通过网络接口使用数据库来负载平衡接收到的组播流量。

2. 发明申请

US20090190474A1 BANDWIDTH-AWARE MULTICAST LOAD BALANCING ON A MULTI-INTERFACE HOST 有权
标题翻译：多接口主机上的带宽多载波均衡负载平衡
公开(公告)号：US20090190474A1
公开(公告)日：2009-07-30
申请号：US12021230
申请日：2008-01-28
申请人： Joshua GAHM , David Oran , Toerless Eckert
发明人： Joshua GAHM , David Oran , Toerless Eckert
IPC分类号： G01R31/08
CPC分类号： H04L12/185 , G06F9/5011 , H04L47/10 , H04L47/125 , H04L47/15
摘要： In one embodiment, a network device having a plurality of network interfaces maintains a database tracking multicast memberships associated with the network interfaces. The network device then uses the database for load balancing received multicast traffic over the network interfaces.
摘要翻译：在一个实施例中，具有多个网络接口的网络设备维护数据库跟踪与网络接口相关联的多播成员资格。网络设备然后通过网络接口使用数据库来负载平衡接收到的组播流量。

3. 发明授权

US08886934B2 Authorizing physical access-links for secure network connections 有权
标题翻译：授权用于安全网络连接的物理访问链接
公开(公告)号：US08886934B2
公开(公告)日：2014-11-11
申请号：US11460198
申请日：2006-07-26
申请人： Toerless Eckert , Brian E. Weis
发明人： Toerless Eckert , Brian E. Weis
IPC分类号： H04L29/06
CPC分类号： H04L63/164 , H04L63/0272 , H04L63/0869
摘要： A method of authenticating a network link of a first device to a second device is described. The method includes communicating a challenge request including a challenge value from the first device to the second device, wherein challenge value is unique to the challenge request. The method further includes receiving a challenge response from the second device, in which the challenge response includes encrypted data pertaining to the first device, and authenticating the network link based on the first device decrypting the encrypted data included in the challenge response from the second device.
摘要翻译：描述了将第一设备的网络链路认证到第二设备的方法。该方法包括将包括挑战值的质询请求从第一设备传送到第二设备，其中挑战值对于质询请求是唯一的。该方法还包括从第二设备接收挑战响应，其中质询响应包括与第一设备有关的加密数据，以及基于第一设备对来自第二设备的挑战响应中包括的加密数据进行解密的认证网络链路。

4. 发明申请

US20120303760A1 FINE-TUNING THE TIME FOR LEAVING/JOINING A MULTICAST SESSION DURING CHANNEL CHANGES 有权
标题翻译：在频道更改期间精简调整播放/加入多媒体会议的时间
公开(公告)号：US20120303760A1
公开(公告)日：2012-11-29
申请号：US13115727
申请日：2011-05-25
申请人： Ali C. Begen , William C. Ver Steeg , Toerless Eckert
发明人： Ali C. Begen , William C. Ver Steeg , Toerless Eckert
IPC分类号： G06F15/16
CPC分类号： H04N21/4384 , H04L12/185 , H04L65/4076 , H04N21/44209 , H04N21/6405 , H04N21/6408
摘要： In one embodiment, a method that receives at a client device a unicast content stream; receives from a network an indication of a future time corresponding to when to send a join message to acquire a multicast content stream; accesses historical information about transitions between unicast and multicast content streams; and sends a join message for the multicast content stream at a time corresponding to the indicated future time subject to a time offset determined by the client device, the time offset based on the historical information.
摘要翻译：在一个实施例中，一种在客户端设备处接收单播内容流的方法; 从网络接收对应于何时发送加入消息以获取多播内容流的未来时间的指示; 访问关于单播和多播内容流之间的转换的历史信息; 并且在与所指示的未来时间对应的时间发送多播内容流的加入消息，该时间偏移由客户端设备确定的时间偏移，基于历史信息的时间偏移。

5. 发明授权

US09049481B2 Fine-tuning the time for leaving/joining a multicast session during channel changes 有权
标题翻译：在通道更改期间，微调离开/加入多播会话的时间
公开(公告)号：US09049481B2
公开(公告)日：2015-06-02
申请号：US13115727
申请日：2011-05-25
申请人： Ali C. Begen , William C. Ver Steeg , Toerless Eckert
发明人： Ali C. Begen , William C. Ver Steeg , Toerless Eckert
IPC分类号： H04L12/18 , H04N21/266 , H04L29/06 , H04N21/6405 , H04N21/6408 , H04N21/4402 , H04N21/442 , H04N21/00 , H04N21/438
CPC分类号： H04N21/4384 , H04L12/185 , H04L65/4076 , H04N21/44209 , H04N21/6405 , H04N21/6408
摘要： In one embodiment, a method that receives at a client device a unicast content stream; receives from a network an indication of a future time corresponding to when to send a join message to acquire a multicast content stream; accesses historical information about transitions between unicast and multicast content streams; and sends a join message for the multicast content stream at a time corresponding to the indicated future time subject to a time offset determined by the client device, the time offset based on the historical information.
摘要翻译：在一个实施例中，一种在客户端设备处接收单播内容流的方法; 从网络接收对应于何时发送加入消息以获取多播内容流的未来时间的指示; 访问关于单播和多播内容流之间的转换的历史信息; 并且在与所指示的未来时间对应的时间发送多播内容流的加入消息，该时间偏移由客户端设备确定的时间偏移，基于历史信息的时间偏移。

6. 发明授权

US08111702B1 Configuring route properties for use in transport tree building 有权
标题翻译：配置用于传输树构建的路由属性
公开(公告)号：US08111702B1
公开(公告)日：2012-02-07
申请号：US11960985
申请日：2007-12-20
申请人： Ijsbrand Wijnands , Arjen Boers , Toerless Eckert , Stefano Previdi
发明人： Ijsbrand Wijnands , Arjen Boers , Toerless Eckert , Stefano Previdi
IPC分类号： H04L12/28
CPC分类号： H04L45/48 , H04L45/50 , H04L45/64
摘要： A mechanism is provided by which a transport tree identifier can be generated comprising both an opaque field, containing information that cannot be interpreted by core routers, and a non-opaque field, containing information that can be interpreted by core routers. The transport tree identifier is then used in the process of building a transport tree across a transport network. A transport network egress router can receive a request to join a multicast datastream from a downstream node outside of the transport network. The information contained in the join message that identifies the desired multicast datastream is encoded in the opaque field of the transport tree identifier. Information related to desired route properties is encoded in the non-opaque field, for interpretation by the core routers. The non-opaque field can also include an identifier of a root node core router for the transport tree. Route properties can be provided, for example, by selection and transmission from the customer itself, or route properties can be associated with a particular customer or associated with a port of an egress router coupled to the customer network.
摘要翻译：提供了一种机制，通过该机制可以生成传输树标识符，包括包含不能被核心路由器解释的信息的不透明字段和包含可由核心路由器解释的信息的非不透明字段。然后，传输树标识符用于跨传输网络构建传输树的过程。传输网络出口路由器可以从传输网络外部的下游节点接收到加入组播数据流的请求。标识期望的多播数据流的加入消息中包含的信息被编码在传输树标识符的不透明字段中。与所需路由属性相关的信息在非不透明字段中进行编码，以供核心路由器进行解释。非不透明字段还可以包括用于传输树的根节点核心路由器的标识符。可以例如通过从客户本身的选择和传输来提供路由属性，或者路由属性可以与特定客户相关联或者与耦合到客户网络的出口路由器的端口相关联。

7. 发明授权

US08040884B2 Constraining multicast traffic between a layer 2 network device and a router 有权
标题翻译：限制第2层网络设备和路由器之间的组播流量
公开(公告)号：US08040884B2
公开(公告)日：2011-10-18
申请号：US11198999
申请日：2005-08-08
申请人： Senthil Arunachalam , Sundher Narayanaswamy , Isidoros Kouvelas , Ishan Wu , Toerless Eckert
发明人： Senthil Arunachalam , Sundher Narayanaswamy , Isidoros Kouvelas , Ishan Wu , Toerless Eckert
IPC分类号： H04L12/54
CPC分类号： H04L12/18 , H04L12/4625 , H04L45/16
摘要： A method, system, computer program product and apparatus are presented to enable a L2 network device, such as a bridge or switch, to control the flow of a multicast data stream to a connected router in response to control messages received from the router by the L2 network device. By controlling the flow of multicast data streams in this manner, there will be a corresponding reduction in wasted bandwidth due to unnecessary transmission of these multicast data streams and a reduction in processing overhead by the router due to analysis and dropping of unnecessary multicast frames. In one aspect of the present invention, the router can generate the control messages in response to receiving a data frame in a multicast data stream from the L2 network device. The router can determine whether a subscriber to that multicast data stream is connected downstream of the router and then transmit an appropriate control message to the upstream L2 network device, indicating whether the router does or does not have a downstream subscriber. In response to such a control message, the L2 network device can cease transmitting the multicast data stream to the router, if appropriate.
摘要翻译：提出了一种方法，系统，计算机程序产品和装置，以使诸如网桥或交换机之类的L2网络设备能够响应于从路由器接收到的控制消息来控制组播数据流到连接的路由器的流 L2网络设备。通过以这种方式控制组播数据流的流动，由于这些组播数据流的不必要的传输和由于不必要的多播帧的分析和丢弃而导致的路由器的处理开销的降低，相应地减少了带宽浪费。在本发明的一个方面，路由器可以响应于从L2网络设备接收到组播数据流中的数据帧来生成控制消息。路由器可以确定该组播数据流的用户是否连接在路由器下游，然后向上游L2网络设备发送适当的控制消息，指示路由器是否有下游用户。响应于这样的控制消息，如果适当，则L2网络设备可以停止向路由器发送组播数据流。

8. 发明授权

US07987259B2 Method and system for providing ad-splicer redundancy in a cable/MSO network 有权
标题翻译：在电缆/ MSO网络中提供广告联接器冗余的方法和系统
公开(公告)号：US07987259B2
公开(公告)日：2011-07-26
申请号：US11422308
申请日：2006-06-05
申请人： Rajiv Asati , Toerless Eckert
发明人： Rajiv Asati , Toerless Eckert
IPC分类号： G06F15/173
CPC分类号： H04L45/123 , H04L45/02 , H04L45/16 , H04L45/28
摘要： Method and system for providing ad-splicer N+1 redundancy in a network by employing IP network intelligence and techniques to facilitate a redundant ad-splicer assuming, within a few seconds, the functionality of the failed primary ad-splicer. The network triggers the installation of unicast and multicast routes on an interface by tracking one or more unicast routes to deliver the unicast and (pre-spliced) multicast traffic to the redundant ad-splicer. The network dynamically adjusts the multicast trees to continue to deliver the post-spliced multicast traffic to the intended receivers.
摘要翻译：在网络中通过采用IP网络智能和技术来提供广告拼接器N + 1冗余的方法和系统，以便于在短时间内假设失败的主要广告拼接器的功能的冗余广告拼接器。网络通过跟踪一个或多个单播路由，将单播和组播路由发送到冗余广播接口，从而触发单播和组播路由的安装。网络动态地调整多播树，以继续将拼接后的组播流量传送到预期的接收机。

9. 发明申请

US20110051727A1 Network based multicast stream duplication and merging 有权
标题翻译：基于网络的组播流复制和合并
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。

10. 发明申请

US20080028225A1 AUTHORIZING PHYSICAL ACCESS-LINKS FOR SECURE NETWORK CONNECTIONS 有权
标题翻译：授权安全网络连接的物理访问链接
公开(公告)号：US20080028225A1
公开(公告)日：2008-01-31
申请号：US11460198
申请日：2006-07-26
申请人： Toerless Eckert , Brian E. Weis
发明人： Toerless Eckert , Brian E. Weis
IPC分类号： H04L9/00
CPC分类号： H04L63/164 , H04L63/0272 , H04L63/0869
摘要： A method of authenticating a network link of a first device to a second device is described. The method includes communicating a challenge request including a challenge value from the first device to the second device, wherein challenge value is unique to the challenge request. The method further includes receiving a challenge response from the second device, in which the challenge response includes encrypted data pertaining to the first device, and authenticating the network link based on the first device decrypting the encrypted data included in the challenge response from the second device.
摘要翻译：描述了将第一设备的网络链路认证到第二设备的方法。该方法包括将包括挑战值的质询请求从第一设备传送到第二设备，其中挑战值对于质询请求是唯一的。该方法还包括从第二设备接收挑战响应，其中质询响应包括与第一设备有关的加密数据，以及基于第一设备对来自第二设备的挑战响应中包括的加密数据进行解密的认证网络链路。

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