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公开(公告)号：US20160127225A1
公开(公告)日：2016-05-05
申请号：US14527025
申请日：2014-10-29
IPC分类号： H04L12/723
摘要： In one embodiment, a device-independent label is associated with multiple network devices such that the packet switching devices in a network will forward a packet based on the device-independent label to one of these multiple network devices. In one embodiment, these device-independent labels include, but are not limited to, domain-identifying labels and forwarding-punt labels. In one embodiment, a domain-identifying label is defined as a label that identifies a plurality of network nodes without identifying a single particular network node, single particular interface, nor single particular link. In one embodiment, a first-domain forwarding-punt label is placed at the top of the label stack to identify to forward the label-switched packet to any one of a plurality of designated forwarding nodes corresponding to the first-domain forwarding-punt label (e.g., for sending to a packet switching device which will have forwarding information for the second domain-identifying label.).
摘要翻译： 在一个实施例中，与设备无关的标签与多个网络设备相关联，使得网络中的分组交换设备将基于与设备无关的标签转发到这些多个网络设备之一的分组。 在一个实施例中，这些与设备无关的标签包括但不限于域标识标签和转发平头标签。 在一个实施例中，域识别标签被定义为标识多个网络节点而不识别单个特定网络节点，单个特定接口以及单个特定链路的标签。 在一个实施例中，第一域转发标签被放置在标签堆叠的顶部，以标识将标签交换分组转发到与第一域转发平头标签相对应的多个指定转发节点中的任何一个 （例如，用于发送到将具有用于第二域标识标签的转发信息的分组交换设备）。
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公开(公告)号：US09832115B2
公开(公告)日：2017-11-28
申请号：US14527025
申请日：2014-10-29
IPC分类号： H04L12/723 , H04L12/715
摘要： In one embodiment, a device-independent label is associated with multiple network devices such that the packet switching devices in a network will forward a packet based on the device-independent label to one of these multiple network devices. In one embodiment, these device-independent labels include, but are not limited to, domain-identifying labels and forwarding-punt labels. In one embodiment, a domain-identifying label is defined as a label that identifies a plurality of network nodes without identifying a single particular network node, single particular interface, nor single particular link. In one embodiment, a first-domain forwarding-punt label is placed at the top of the label stack to identify to forward the label-switched packet to any one of a plurality of designated forwarding nodes corresponding to the first-domain forwarding-punt label (e.g., for sending to a packet switching device which will have forwarding information for the second domain-identifying label).
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3.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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4.发明申请公开(公告)号：US20140226662A1
公开(公告)日：2014-08-14
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： H04L12/741
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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公开(公告)号：US20150200843A1
公开(公告)日：2015-07-16
申请号：US14155465
申请日：2014-01-15
IPC分类号： H04L12/723 , H04L12/803 , H04L12/707
CPC分类号： H04L45/50 , H04L45/24 , H04L63/0272
摘要： In one embodiment, packet labels are used to identify synchronization groups of packets, such as for, but not limited to, performing processing of packets based on their corresponding synchronization group, as the synchronization label of a packet may define a current characteristic of the packet stream which is taken into account performing processing related to the packet. A plurality of synchronization groups of packets are generated and sent, by a first packet switching device, to a second packet switching device, with each particular packet of the plurality of synchronization groups of packets including a same synchronization label in a label stack of said particular packet that is different than a synchronization label used with another of the plurality of synchronization groups of packets, and with each synchronization group of the plurality of synchronization groups of packets including a plurality of packets.
摘要翻译： 在一个实施例中，分组标签用于标识分组的同步组，例如用于但不限于基于其对应的同步组来执行分组的处理，因为分组的同步标签可以定义分组的当前特性 考虑到与分组相关的处理的流。 由第一分组交换设备产生并发送多个分组的同步组，并发送给第二分组交换设备，其中分组的多个同步组中的每个特定分组在所述特定的标签栈中包括相同的同步标签 分组不同于与分组的多个同步组中的另一个同时使用的同步标签，并且与分组的多个同步组的每个同步组包括多个分组。
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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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9.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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10.发明申请TRAFFIC DISTRIBUTION ACROSS A PLURALITY OF ATTACHMENT CIRCUITS OF A MULTIHOMED SITE 有权多媒体站点的多媒体连接电路的交通分配公开(公告)号：US20120230335A1
公开(公告)日：2012-09-13
申请号：US13045408
申请日：2011-03-10
IPC分类号： H04L12/56
CPC分类号： H04L45/38 , H04L45/7453
摘要： In one embodiment, an edge device of a core network may receive a plurality of packets from a peripheral network having a plurality of active connections to the core network, where each packet has a destination address and a source address. The edge device may compute a hash on the destination address or the source address of each packet, and determine whether the computed hash corresponds to the edge device. In response to the computed hash not corresponding to the edge device, the edge device may drop the packet, and in response to the computed hash corresponding to the edge device, the edge device may process the packet to forward the packet, where the dropping and processing load balances the plurality of packets over the active connections and prevents formation of loops in the core network.
摘要翻译： 在一个实施例中，核心网络的边缘设备可以从具有到核心网络的多个活动连接的外围网络接收多个分组，其中每个分组具有目的地地址和源地址。 边缘设备可以计算目的地址或每个分组的源地址上的散列，并确定所计算的散列是否对应于边缘设备。 响应于不对应于边缘设备的计算哈希，边缘设备可以丢弃该分组，并且响应于与边缘设备相对应的计算出的哈希，边缘设备可以处理分组以转发分组，其中丢弃和 处理负载通过主动连接来平衡多个分组，并且防止在核心网络中形成环路。
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