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1. 发明授权

US07373543B1 Method and apparatus for uninterrupted packet transfer using replication over disjoint paths 有权
标题翻译：用于通过不相交路径进行复制的不间断数据包传输的方法和装置
公开(公告)号：US07373543B1
公开(公告)日：2008-05-13
申请号：US10820257
申请日：2004-04-08
申请人： Bijendra N. Jain , Keith McCloghrie
发明人： Bijendra N. Jain , Keith McCloghrie
IPC分类号： G06F11/00
CPC分类号： H04L45/28 , H04L45/00 , H04L45/24
摘要： A method of operating a fault tolerant connection in a network is described. The network includes a number of network elements and a number of links. Each of the network elements is coupled to at least one other of the network elements by at least one of the links. The method identifies a first path and a second path. The first path is between a first one of the network elements and a second one of the network elements, as is the second path. Moreover, the first path and the second path are disjoint. This disjointedness can be any difference between the two paths (e.g., any combination of different network elements or links). A packet is sent from the first one of the network elements via the first path, while a duplicate packet is sent from the first one of the network elements via the second path. The duplicate packet is a duplicate of the packet. Once these packets have been sent, at least one of the packet and the duplicate packet are received at the second one of the network elements. If both the packet and the duplicate packet are received at the second one of the network elements, one of the two is discarded (e.g., by simply ignoring the last one received).
摘要翻译：描述了在网络中操作容错连接的方法。该网络包括多个网络元件和多个链路。每个网络元件通过链路中的至少一个耦合到网络元件中的至少另一个。该方法识别第一路径和第二路径。第一路径在网络元件中的第一路径和网络元件中的第二路径之间，和第二路径一样。此外，第一路径和第二路径是不相交的。这种不相容性可以是两个路径之间的任何差异（例如，不同网络元件或链路的任何组合）。经由第一路径从第一网络元件发送分组，同时经由第二路径从第一网络单元发送重复分组。重复的数据包是数据包的副本。一旦这些分组被发送，则在第二个网络单元中接收到分组和重复分组中的至少一个。如果在第二个网络元件处接收到分组和重复分组，则丢弃两个分组中的一个（例如，通过简单地忽略所接收的最后一个）。

2. 发明授权

US07773515B2 Method and apparatus for estimating delay and jitter between many network routers using measurements between a preferred set of routers 有权
标题翻译：用于使用优选的一组路由器之间的测量来估计许多网络路由器之间的延迟和抖动的方法和装置
公开(公告)号：US07773515B2
公开(公告)日：2010-08-10
申请号：US11168071
申请日：2005-06-28
申请人： Bijendra N. Jain , Keith McCloghrie
发明人： Bijendra N. Jain , Keith McCloghrie
IPC分类号： H04L12/26 , G01R31/08 , G06F15/173 , G06F15/177
CPC分类号： H04L43/087 , H04L43/0858
摘要： A method and apparatus for determining a network performance metric in a network is described. The network includes a number of network elements and a number of links. Each of the network elements is coupled to at least one other of the network elements by at least one of the links. The method includes forming a first set of network element pairs, ordering a first number of network element pairs, forming a second set of network element pairs, measuring a measured network performance metric between a first network element pair and computing a computed network performance metric. The first set of network element pairs include a number of pairs of the network elements. The ordering of a first number of network element pairs includes network element pairs in the first set of network element pairs. The second set of network element pairs includes network element pairs in the first set of network element pairs. The measurement is taken between a first network element pair. The first network element pair includes a first network element and a second network element of one of the network element pairs in the second set of network element pairs. The computed network performance metric is computed between a second network element pair using the measured network performance metric. The second network element pair includes a first network element and a second network element of the network element pair in the first set of network element pairs.
摘要翻译：描述了一种用于确定网络中的网络性能度量的方法和装置。该网络包括多个网络元件和多个链路。每个网络元件通过链路中的至少一个耦合到网络元件中的至少另一个。该方法包括形成第一组网元对，排序第一数量的网元对，形成第二组网元对，测量第一网元对之间的测量网络性能度量并计算计算出的网络性能度量。第一组网元对包括多对网元。第一数量的网元对的排序包括第一组网元对中的网元对。第二组网元对包括第一组网元对中的网元对。在第一网络元件对之间进行测量。所述第一网元对包括所述第二网元对中的所述网元对之一的第一网元和第二网元。使用测量的网络性能度量在第二网元对之间计算所计算的网络性能度量。所述第二网元对包括所述第一组网元中的所述网元对的第一网元和第二网元。

3. 发明授权

US06912203B1 Method and apparatus for estimating delay and jitter between many network routers using measurements between a preferred set of routers 失效
标题翻译：用于使用优选的一组路由器之间的测量来估计许多网络路由器之间的延迟和抖动的方法和装置
公开(公告)号：US06912203B1
公开(公告)日：2005-06-28
申请号：US09638180
申请日：2000-07-31
申请人： Bijendra N. Jain , Keith McCloghrie
发明人： Bijendra N. Jain , Keith McCloghrie
IPC分类号： G01R31/08 , H04L12/26 , H04L12/28
CPC分类号： H04L43/087 , H04L43/0858
摘要： A method and apparatus for determining a network performance metric in a network is described. The network includes a number of network elements and a number of links. Each of the network elements is coupled to at least one other of the network elements by at least one of the links. The method includes forming a first set of network element pairs, ordering a first number of network element pairs, forming a second set of network element pairs, measuring a measured network performance metric between a first network element pair and computing a computed network performance metric.
摘要翻译：描述了一种用于确定网络中的网络性能度量的方法和装置。该网络包括多个网络元件和多个链路。每个网络元件通过链路中的至少一个耦合到网络元件中的至少另一个。该方法包括形成第一组网元对，排序第一数量的网元对，形成第二组网元对，测量第一网元对之间的测量网络性能度量并计算计算出的网络性能度量。

4. 发明授权

US06885642B1 Method and apparatus for estimating delay and jitter between network routers coupled to background network 失效
标题翻译：用于估计耦合到背景网络的网络路由器之间的延迟和抖动的方法和装置
公开(公告)号：US06885642B1
公开(公告)日：2005-04-26
申请号：US09609302
申请日：2000-06-30
申请人： Bijendra N. Jain , Keith McCloghrie
发明人： Bijendra N. Jain , Keith McCloghrie
IPC分类号： H04L12/56
CPC分类号： H04L45/121
摘要： A delay measurement technique according to an embodiment according to the present invention is based on the precept, ascertained by the inventors, that a link between network nodes will often contribute to the delay encountered between several different pairs of network nodes. Such a technique identifies the path between each pair of nodes by a list of links that form the path. Paths that are orthogonal are treated as being necessary for describing the delays encountered between nodes, and, once the requisite set of orthogonal paths has been derived, all other paths can be described in terms of one or more of these orthogonal paths. Such a technique also lends itself to matrix representation of the paths, and the use of matrix manipulation techniques in deriving delay and jitter.
摘要翻译：根据本发明的实施例的延迟测量技术基于由发明人确定的规则，网络节点之间的链路通常将有助于在几个不同的网络节点对之间遇到的延迟。这种技术通过形成路径的链接列表来识别每对节点之间的路径。正交的路径被视为描述在节点之间遇到的延迟所必需的，并且一旦已经导出必需的正交路径集合，就可以用这些正交路径中的一个或多个来描述所有其他路径。这种技术也适用于路径的矩阵表示，以及使用矩阵操纵技术来推导延迟和抖动。

5. 发明授权

US06868068B1 Method and apparatus for estimating delay and jitter between network routers 失效
标题翻译：用于估计网络路由器之间的延迟和抖动的方法和装置
公开(公告)号：US06868068B1
公开(公告)日：2005-03-15
申请号：US09746233
申请日：2000-12-21
申请人： Bijendra N. Jain , Keith McCloghrie
发明人： Bijendra N. Jain , Keith McCloghrie
IPC分类号： H04L12/26 , H04L12/56
CPC分类号： H04L43/087
摘要： A delay measurement technique according to an embodiment according to the present invention is based on the precept, ascertained by the inventors, that a link between network nodes will often contribute to the delay encountered between several different pairs of network nodes. Such a technique identifies the path between each pair of nodes by a list of links that form the path. Paths that are orthogonal are treated as being necessary for describing the delays encountered between nodes, and, once the requisite set of orthogonal paths has been derived, all other paths can be described in terms of one or more of these orthogonal paths. Such a technique also lends itself to matrix representation of the paths, and the use of matrix manipulation techniques in deriving delay and jitter.
摘要翻译：根据本发明的实施例的延迟测量技术基于由发明人确定的规则，网络节点之间的链路通常将有助于在几个不同的网络节点对之间遇到的延迟。这种技术通过形成路径的链接列表来识别每对节点之间的路径。正交的路径被视为描述在节点之间遇到的延迟所必需的，并且一旦已经导出必需的正交路径集合，就可以用这些正交路径中的一个或多个来描述所有其他路径。这种技术也适用于路径的矩阵表示，以及使用矩阵操纵技术来推导延迟和抖动。

6. 发明授权

US07111073B1 Apparatus for estimating delay and jitter between network routers 有权
标题翻译：用于估计网络路由器之间的延迟和抖动的装置
公开(公告)号：US07111073B1
公开(公告)日：2006-09-19
申请号：US09583177
申请日：2000-05-30
申请人： Bijendra N. Jain , Keith McCloghrie
发明人： Bijendra N. Jain , Keith McCloghrie
IPC分类号： G06F15/173 , G06F11/00 , G01R31/08 , H04J1/16 , H04L12/26
CPC分类号： H04L45/121
摘要： A delay measurement technique according to an embodiment according to the present invention is based on the precept, ascertained by the inventors, that a link between network nodes will often contribute to the delay encountered between several different pairs of network nodes. Such a technique identifies the path between each pair of nodes by a list of links that form the path. Paths that are orthogonal are treated as being necessary for describing the delays encountered between nodes, and, once the requisite set of orthogonal paths has been derived, all other paths can be described in terms of one or more of these orthogonal paths. Such a technique also lends itself to matrix representation of the paths, and the use of matrix manipulation techniques in deriving delay and jitter.
摘要翻译：根据本发明的实施例的延迟测量技术基于由发明人确定的规则，网络节点之间的链路通常将有助于在几个不同的网络节点对之间遇到的延迟。这种技术通过形成路径的链接列表来识别每对节点之间的路径。正交的路径被视为描述在节点之间遇到的延迟所必需的，并且一旦已经导出必需的正交路径集合，就可以用这些正交路径中的一个或多个来描述所有其他路径。这种技术也适用于路径的矩阵表示，以及使用矩阵操纵技术来推导延迟和抖动。

7. 发明授权

US06795858B1 Method and apparatus for metric based server selection 有权
标题翻译：基于度量的服务器选择的方法和装置
公开(公告)号：US06795858B1
公开(公告)日：2004-09-21
申请号：US09750661
申请日：2000-12-29
申请人： Bijendra N. Jain , Keith Mccloghrie
发明人： Bijendra N. Jain , Keith Mccloghrie
IPC分类号： G06F15173
CPC分类号： H04L67/1008 , H04L67/1002 , H04L67/101 , H04L67/1038
摘要： Methods and apparatus are provided for selecting a server that can provider content to a client in an optimal manner. A server selection system is coupled to a network node that can identify servers that can provide client reqeusted content. Performance metrics of the servers and their associated priorities are obtained. Servers with metrics that are worse than all the metrics of any other server are optionally eliminated from consideration for best server. Priorities for the metrics are obtained. The metric with the highest priority is applied to analyze the group of servers. The server with the best value for the metric and all servers with metric values falling within a significance window are retained. All others are eliminated from consideration. The other metrics are applied until no metrics remain or only one server remains. If no metrics remain, a best server is identified from the remaining group.
摘要翻译：提供了用于选择可以以最佳方式向客户端提供内容的服务器的方法和装置。服务器选择系统耦合到网络节点，其可以识别可以提供客户端所需内容的服务器。获得服务器的性能指标及其相关优先级。具有比任何其他服务器的所有度量值更差的度量值的服务器可选择从最佳服务器的考虑中消除。获得指标的优先级。应用优先级最高的度量来分析服务器组。具有度量值最佳值的服务器和具有度量值落入重要性窗口的所有服务器都将被保留。所有其他的消除了考虑。其他指标将被应用，直到没有指标保留或只剩下一个服务器。如果不存在任何指标，则从其余组中确定最佳服务器。

8. 发明授权

US06751746B1 Method and apparatus for uninterrupted packet transfer using replication over disjoint paths 有权
标题翻译：用于通过不相交路径进行复制的不间断数据包传输的方法和装置
公开(公告)号：US06751746B1
公开(公告)日：2004-06-15
申请号：US09629585
申请日：2000-07-31
申请人： Bijendra N. Jain , Keith McCloghrie
发明人： Bijendra N. Jain , Keith McCloghrie
IPC分类号： H02H305
CPC分类号： H04L45/28 , H04L45/00 , H04L45/24
摘要： A method of operating a fault tolerant connection in a network is described. The network includes a number of network elements and a number of links. Each of the network elements is coupled to at least one other of the network elements by at least one of the links. The method identifies a first path and a second path. The first path is between a first one of the network elements and a second one of the network elements, as is the second path. Moreover, the first path and the second path are disjoint. This disjointedness can be any difference between the two paths (e.g., any combination of different network elements or links). A packet is sent from the first one of the network elements via the first path, while a duplicate packet is sent from the first one of the network elements via the second path. The duplicate packet is a duplicate of the packet. Once these packets have been sent, at least one of the packet and the duplicate packet are received at the second one of the network elements. If both the packet and the duplicate packet are received at the second one of the network elements, one of the two is discarded (e.g., by simply ignoring the last one received).
摘要翻译：描述了在网络中操作容错连接的方法。该网络包括多个网络元件和多个链路。每个网络元件通过链路中的至少一个耦合到网络元件中的至少另一个。该方法识别第一路径和第二路径。第一路径在网络元件中的第一路径和网络元件中的第二路径之间，和第二路径一样。此外，第一路径和第二路径是不相交的。这种不相容性可以是两个路径之间的任何差异（例如，不同网络元件或链路的任何组合）。经由第一路径从第一网络元件发送分组，同时经由第二路径从第一网络单元发送重复分组。重复的数据包是数据包的副本。一旦这些分组被发送，则在第二个网络单元中接收到分组和重复分组中的至少一个。如果在第二个网络元件处接收到分组和重复分组，则丢弃两个分组中的一个（例如，通过简单地忽略所接收的最后一个）。

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