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公开(公告)号：US20080025214A1
公开(公告)日：2008-01-31
申请号：US11493969
申请日：2006-07-27
IPC分类号： H04L12/26
CPC分类号： H04L47/10 , H04L47/20 , H04L47/215 , H04L47/2441 , H04L47/31 , H04L47/32 , H04L47/41 , Y02D50/30
摘要： A multilevel coupled policer is configured to police packets using at least two policing levels, including a first-level of class policers and a second-level aggregate policer. The multilevel coupled policer is configured to share bandwidth of the aggregate policer among packet traffic corresponding to the class policers based on the packet traffic. The multilevel coupled policer is configured to apply a particular class policer corresponding to a particular packet to identify a tentative policing action. The multilevel coupled policer is configured to apply the second-level aggregate policer to the particular packet based on the identified the tentative policing action and a result of a comparison operation of the number of tokens in one or more token buckets associated with the second-level aggregate policer and the length of the particular packet in order to determine a final policing action for marking and/or applying to the particular packet.
摘要翻译： 多层耦合监管器配置为使用至少两个监管级别来警告数据包，包括第一级类策略器和二级聚合策略器。 多级耦合监控器被配置为基于分组流量来共享与类策略器相对应的分组业务中的聚合策略器的带宽。 多级耦合策略器被配置为应用与特定分组相对应的特定类策略器以识别临时策略动作。 多级耦合策略器被配置为基于所识别的临时策略动作将第二级聚合策略器应用于特定分组，并且与第二级相关联的一个或多个令牌桶中的令牌数量的比较操作的结果 聚合策略器和特定分组的长度，以便确定用于标记和/或应用于特定分组的最终策略动作。
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公开(公告)号：US20090010158A1
公开(公告)日：2009-01-08
申请号：US11774343
申请日：2007-07-06
IPC分类号： H04L12/26
CPC分类号： H04L65/608 , H04L41/0816 , H04L43/026 , H04L43/0829 , H04L43/0852 , H04L43/087 , H04L43/106 , H04L65/80 , Y02D50/30
摘要： In one embodiment, a router receives a real-time multimedia flow that comprises IP packets. The router then processes values included in the Identifier fields of the IP packets using resources similar to those used in the monitoring of RTP flows to identify metrics for the real-time multimedia flow. The metrics may be transferred to a remote management device for aggregation with metrics output by other routers located on the data path for the real-time multimedia flow.
摘要翻译： 在一个实施例中，路由器接收包括IP分组的实时多媒体流。 然后路由器使用类似于在RTP流监视中使用的资源来处理IP分组的标识符字段中包括的值，以识别实时多媒体流的度量。 可以将度量传送到远程管理设备，以便与位于数据路径上的实时多媒体流的其他路由器输出的度量进行聚合。
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公开(公告)号：US08077611B2
公开(公告)日：2011-12-13
申请号：US11493969
申请日：2006-07-27
IPC分类号： G01R31/08
CPC分类号： H04L47/10 , H04L47/20 , H04L47/215 , H04L47/2441 , H04L47/31 , H04L47/32 , H04L47/41 , Y02D50/30
摘要： A multilevel coupled policer is configured to police packets using at least two policing levels, including a first-level of class policers and a second-level aggregate policer. The multilevel coupled policer is configured to share bandwidth of the aggregate policer among packet traffic corresponding to the class policers based on the packet traffic. The multilevel coupled policer is configured to apply a particular class policer corresponding to a particular packet to identify a tentative policing action. The multilevel coupled policer is configured to apply the second-level aggregate policer to the particular packet based on the identified the tentative policing action and a result of a comparison operation of the number of tokens in one or more token buckets associated with the second-level aggregate policer and the length of the particular packet in order to determine a final policing action for marking and/or applying to the particular packet.
摘要翻译： 多层耦合监管器配置为使用至少两个监管级别来警告数据包，包括第一级类策略器和二级聚合策略器。 多级耦合监控器被配置为基于分组流量来共享与类策略器相对应的分组业务中的聚合策略器的带宽。 多级耦合策略器被配置为应用与特定分组相对应的特定类策略器以识别临时策略动作。 多级耦合策略器被配置为基于所识别的临时策略动作将第二级聚合策略器应用于特定分组，并且与第二级相关联的一个或多个令牌桶中的令牌数量的比较操作的结果 聚合策略器和特定分组的长度，以便确定用于标记和/或应用于特定分组的最终策略动作。
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公开(公告)号：US20130051392A1
公开(公告)日：2013-02-28
申请号：US13221144
申请日：2011-08-30
IPC分类号： H04L12/56
CPC分类号： H04L45/025 , H04L45/04 , H04L45/54 , H04L45/748
摘要： In one embodiment, an Internet Protocol (IP) routing information base of a packet switching device is filtered to produce a significantly smaller subset of IP routes that are installed in one or more forwarding information bases for forwarding of IP packets. In one embodiment, these smaller forwarding information bases are located in memory local to a network processor to more quickly perform lookup operations thereon. In one embodiment, one or more of these forwarding information bases is used only for exact matching of addresses (not longest prefix matching). In one embodiment, the IP routes in these smaller forwarding information bases substantially correspond to packet switching devices in a network (e.g., core and edge routers), such as in contrast to including all the IP routes for devices external to the network.
摘要翻译： 在一个实施例中，分组交换设备的因特网协议（IP）路由信息库被过滤以产生安装在用于转发IP分组的一个或多个转发信息库中的明显较小的IP路由子集。 在一个实施例中，这些较小转发信息库位于网络处理器本地的存储器中，以更快速地执行其上的查找操作。 在一个实施例中，这些转发信息库中的一个或多个仅用于地址的精确匹配（不是最长的前缀匹配）。 在一个实施例中，这些较小转发信息库中的IP路由基本上对应于网络中的分组交换设备（例如，核心和边缘路由器），例如与包括网络外部设备的所有IP路由相反。
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公开(公告)号：US08873409B2
公开(公告)日：2014-10-28
申请号：US13221144
申请日：2011-08-30
IPC分类号： H04L12/28 , H04L12/751 , H04L12/715 , H04L12/745 , H04L12/741
CPC分类号： H04L45/025 , H04L45/04 , H04L45/54 , H04L45/748
摘要： In one embodiment, an Internet Protocol (IP) routing information base of a packet switching device is filtered to produce a significantly smaller subset of IP routes that are installed in one or more forwarding information bases for forwarding of IP packets. In one embodiment, these smaller forwarding information bases are located in memory local to a network processor to more quickly perform lookup operations thereon. In one embodiment, one or more of these forwarding information bases is used only for exact matching of addresses (not longest prefix matching). In one embodiment, the IP routes in these smaller forwarding information bases substantially correspond to packet switching devices in a network (e.g., core and edge routers), such as in contrast to including all the IP routes for devices external to the network.
摘要翻译： 在一个实施例中，分组交换设备的因特网协议（IP）路由信息库被过滤以产生安装在用于转发IP分组的一个或多个转发信息库中的明显较小的IP路由子集。 在一个实施例中，这些较小转发信息库位于网络处理器本地的存储器中，以更快速地执行其上的查找操作。 在一个实施例中，这些转发信息库中的一个或多个仅用于地址的精确匹配（不是最长的前缀匹配）。 在一个实施例中，这些较小转发信息库中的IP路由基本上对应于网络中的分组交换设备（例如，核心和边缘路由器），例如与包括网络外部设备的所有IP路由相反。
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6.发明授权Replacing an existing network communications path with a new path using some exclusive physical resources of the existing path 有权使用现有路径的一些独占物理资源替换现有的网络通信路径与新的路径公开(公告)号：US09391704B2
公开(公告)日：2016-07-12
申请号：US13769355
申请日：2013-02-17
申请人： Ornan Alexander Gerstel , Zafar Ali , Clarence Filsfils , George Leonard Swallow , Matthew Hartley
发明人： Ornan Alexander Gerstel , Zafar Ali , Clarence Filsfils , George Leonard Swallow , Matthew Hartley
IPC分类号： H04B10/27 , H04L12/729 , H04L12/721 , H04L12/707 , H04L12/717
摘要： In one embodiment, a replacement network communications path is determined using dedicated resources of an existing path. One or more network elements in a network determines a new communications path between a first network node and a second network node in the network while an existing communications path is currently configured in the network to carry traffic between the first and second network nodes. The existing communications path includes one or more exclusive physical resources dedicated to the existing communications path. The new communications path includes at least one of said exclusive physical resources dedicated to the existing communications path. One embodiment includes: subsequent to said determining the new communications path, removing the existing communications path from service, and then instantiating the new communications path, with the new communications path including said at least one of said exclusive physical resources.
摘要翻译： 在一个实施例中，使用现有路径的专用资源来确定替换网络通信路径。 网络中的一个或多个网络元件确定网络中的第一网络节点和第二网络节点之间的新的通信路径，而现有的通信路径当前被配置在网络中以承载第一和第二网络节点之间的业务。 现有的通信路径包括专用于现有通信路径的一个或多个专用物理资源。 新的通信路径包括专用于现有通信路径的所述独占物理资源中的至少一个。 一个实施例包括：在所述确定新的通信路径之后，从服务中移除现有的通信路径，然后实例化新的通信路径，新的通信路径包括所述独占物理资源中的所述至少一个。
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7.发明授权公开(公告)号：US09300579B2
公开(公告)日：2016-03-29
申请号：US13863013
申请日：2013-04-15
申请人： Daniel C. Frost , Simon James Trevor Spraggs , Rex Emmanuel Fernando , Stewart Frederick Bryant , Jim Guichard , Carlos M. Pignataro , Clarence Filsfils
发明人： Daniel C. Frost , Simon James Trevor Spraggs , Rex Emmanuel Fernando , Stewart Frederick Bryant , Jim Guichard , Carlos M. Pignataro , Clarence Filsfils
IPC分类号： H04L12/26 , H04L12/741 , H04L12/723
摘要： In one embodiment, an apparatus in a network determines particular metadata to communicate infrastructure information associated with a particular packet to another apparatus in the network. The apparatus sends into the network the particular packet including a metadata channel, comprising said particular metadata, external to the payload of the particular packet. Examples of infrastructure metadata carried in a packet include, but are not limited to, information defining service chaining for processing of the packet, contextual information for processing of the packet, specific handling instructions of the packet, and operations, maintenance, administration (OAM) instrumentation of the packet.
摘要翻译： 在一个实施例中，网络中的装置确定特定元数据以将与特定分组相关联的基础设施信息传送到网络中的另一装置。 该装置向该网络发送包括特定数据包的有效载荷之外的包括所述特定元数据的元数据信道的特定数据包。 在分组中携带的基础架构元数据的示例包括但不限于定义用于处理分组的服务链接的信息，用于处理分组的上下文信息，分组的特定处理指令以及操作，维护，管理（OAM） 数据包的检测。
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8.发明授权Congestion-based notification during fast reroute operations in stateful path computation element environments 有权在状态路径计算元素环境中进行快速重路由操作期间基于拥塞的通知公开(公告)号：US09065750B2
公开(公告)日：2015-06-23
申请号：US13524135
申请日：2012-06-15
IPC分类号： H04J3/14 , G06F11/00 , H04L12/729 , H04L12/707 , H04L12/703 , H04L12/801 , H04L12/911
CPC分类号： H04L45/125 , H04L45/22 , H04L45/28 , H04L47/11 , H04L47/825
摘要： In one embodiment, once activation of use of a backup tunnel is detected for a primary tunnel, then a level of congestion of the path of the backup tunnel may be determined. In response to the level being greater than a threshold, a head-end node of the primary tunnel is triggered to reroute the primary tunnel (e.g., requesting to a path computation element). Conversely, in response to the level not being greater than the threshold, the backup tunnel is allowed to remain activated.
摘要翻译： 在一个实施例中，一旦检测到主隧道的备用隧道的使用的激活，则可以确定备用隧道的路径的拥塞级别。 响应于该级别大于阈值，主隧道的前端节点被触发以重新路由主隧道（例如，请求到路径计算元件）。 相反，响应级别不大于阈值，允许备份隧道保持激活。
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公开(公告)号：US08867334B2
公开(公告)日：2014-10-21
申请号：US13338980
申请日：2011-12-28
CPC分类号： H04L12/4641
摘要： In one embodiment, a list of border node next hop options is maintained in a memory. The list of border node next hop options includes one or more of border nodes that may be utilized to reach one or more prefixes. An index value is associated with each border node of the list of border node next hop options. A list of labels is also maintained in the memory. The index value of each border node is associated with a corresponding label for a path to reach that border node. When a change to the one or more border nodes is detected, the list of border node next hop options is updated to remove a border node. However, a label for the path to reach the border node is maintained in the list of labels for at least a period of time.
摘要翻译： 在一个实施例中，边界节点下一跳选项的列表被保存在存储器中。 边界节点下一跳选项的列表包括可用于达到一个或多个前缀的一个或多个边界节点。 索引值与边界节点下一跳选项列表中的每个边界节点相关联。 内存中也保留了标签列表。 每个边界节点的索引值与到达该边界节点的路径的相应标签相关联。 当检测到一个或多个边界节点的更改时，更新边界节点下一跳选项列表以删除边界节点。 然而，到达边界节点的路径的标签在标签列表中保持至少一段时间。
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10.发明申请公开(公告)号：US20130336107A1
公开(公告)日：2013-12-19
申请号：US13524769
申请日：2012-06-15
IPC分类号： H04L12/24
CPC分类号： H04L45/028 , H04L41/0654 , H04L45/42 , H04L45/44 , H04L47/785 , H04L47/825
摘要： In one embodiment, a device (e.g., a path computation element, PCE) monitors a tunnel set-up failure rate within a computer network, and determines whether to adjust an accuracy of routing information based on the tunnel set-up failure rate. For instance, the tunnel set-up failure rate being above a first threshold indicates a need for greater accuracy. In response to the tunnel set-up failure rate being above the first threshold, the device may then instruct one or more routers to shorten their routing update interval in the computer network.
摘要翻译： 在一个实施例中，设备（例如，路径计算元件，PCE）监视计算机网络内的隧道建立失败率，并且基于隧道建立失败率来确定是否调整路由信息的准确性。 例如，隧道建立故障率高于第一阈值表示需要更高的精度。 响应于隧道建立失败率高于第一阈值，设备然后可以指示一个或多个路由器缩短其在计算机网络中的路由更新间隔。
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