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1. 发明申请

US20170132055A1 Determining Physical Layer Error Signatures of a Communications Link 审中-公开
公开(公告)号：US20170132055A1
公开(公告)日：2017-05-11
申请号：US14938819
申请日：2015-11-11
申请人： Hui Wu , Yaochao Yang , Mike Sapozhnikov , Stephen Kolecki
发明人： Hui Wu , Yaochao Yang , Mike Sapozhnikov , Stephen Kolecki
IPC分类号： G06F11/07 , H04L1/00 , H04L25/03
CPC分类号： G06F11/076 , G06F11/0709 , G06F11/0787 , H04L1/0045 , H04L1/203 , H04L25/03197 , H04L27/00
摘要： In one embodiment, physical layer error signatures of a communications link are determined by ascertaining characteristics of erred and correct modulation symbols received by a physical receiver of a communications device, such as, but not limited to, by a receiver of a packet switching device in a communications network normally used to receive data traffic. In one embodiment, a physical receiver of a physical communications device receives a particular modulation symbol and determines whether the received particular modulation symbol is an expected modulation symbol in a predetermined sequence of modulation symbols. One or more storage devices are maintained with one or more error signature measurements based on determining whether the particular modulation symbol is the expected modulation symbol in the predetermined sequence of modulation symbols, with the error signature measurements including performing a comparison to a threshold value or a current maximum value.

2. 发明申请

US20160380869A1 Enhanced Packet Flow Monitoring in a Network 审中-公开
标题翻译：网络中增强的分组流监控
公开(公告)号：US20160380869A1
公开(公告)日：2016-12-29
申请号：US14753325
申请日：2015-06-29
申请人： Tony Changhong Shen , Yu Zhang , Alan Xiao-Rong Wang , Aviv Prital , Doron Oz , Kathy Xia Ke
发明人： Tony Changhong Shen , Yu Zhang , Alan Xiao-Rong Wang , Aviv Prital , Doron Oz , Kathy Xia Ke
IPC分类号： H04L12/26 , H04L12/741 , H04L12/801
CPC分类号： H04L43/16 , H04L43/026 , H04L45/74 , H04L47/29 , H04L47/32
摘要： In one embodiment, enhanced packet flow monitoring is performed by packet switching devices in a network. A packet switching device is configured to monitor a flow of packets passing through the packet switching device, including detecting a gap in consecutive packets of the flow of packets, and attributing the gap as not being dropped one or more packets based on a particular time duration between a last received packet of the flow of packets before said detected gap and a first received packet of the flow of packets after said detected gap. In one embodiment, the gap is attributed to not being dropped packets when the particular time duration is greater than a threshold value; and conversely, attributed to being dropped packets when the particular time duration is less than a same or different threshold value.
摘要翻译：在一个实施例中，增强的分组流监视由网络中的分组交换设备执行。分组交换设备被配置为监视通过分组交换设备的分组流，包括检测分组流的连续分组中的间隔，并且基于特定持续时间将该间隔归因为不丢弃一个或多个分组在所述检测到的间隙之前的分组流的最后接收分组与所述检测到的间隙之后的分组流的第一接收分组之间。在一个实施例中，当特定持续时间大于阈值时，间隙归因于不丢包; 相反，归因于当特定持续时间小于相同或不同的阈值时丢弃分组。

3. 发明申请

US20160301628A1 Consolidation Encodings Representing Designated Receivers in a Bit String 有权
标题翻译：代表位字符串中的指定接收器的合并编码
公开(公告)号：US20160301628A1
公开(公告)日：2016-10-13
申请号：US14684415
申请日：2015-04-12
申请人： Ijsbrand Wijnands , Gregory J. Shepherd , Neale David Raymond Ranns , Stewart Frederick Bryant
发明人： Ijsbrand Wijnands , Gregory J. Shepherd , Neale David Raymond Ranns , Stewart Frederick Bryant
IPC分类号： H04L12/931
CPC分类号： H04L49/201
摘要： In one embodiment, for each particular multicast flow of a plurality of multicast flows of packets a particular consolidation encoding of a plurality of consolidation encodings is selected based on the sparseness of bit positions within a bit string corresponding to designated receiving packet switching devices of the particular multicast flow. The packet switching device sends one or more packets corresponding to said particular packet, with each of these one or more packets including designated receiving packet switching devices of the particular multicast flow in the header of said particular packet according to the particular consolidation encoding. In one embodiment, different consolidation encodings of the plurality of consolidation encodings are used for at least two different multicast flows of the plurality of multicast flows of packets. In one embodiment, each of said receiving packet switching devices is Bit Index Explicit Replication (BIER) Bit-Forwarding Router (BFR).
摘要翻译：在一个实施例中，对于分组的多个多播流的每个特定多播流，基于与特定的指定的接收分组交换设备相对应的比特串内的比特位的稀疏性来选择多个合并编码的特定合并编码组播流。根据特定的合并编码，分组交换设备发送对应于所述特定分组的一个或多个分组，其中这些一个或多个分组中的每一个包括特定多播流的指定的接收分组交换设备在所述特定分组的报头中。在一个实施例中，多个合并编码的不同合并编码被用于分组的多个多播流中的至少两个不同的多播流。在一个实施例中，每个所述接收分组交换设备是位索引显性复制（BIER）位转发路由器（BFR）。

4. 发明申请

US20150319079A1 Service Node Using Services Applied by an Application Node 审中-公开
标题翻译：使用应用程序节点应用的服务的服务节点
公开(公告)号：US20150319079A1
公开(公告)日：2015-11-05
申请号：US14797377
申请日：2015-07-13
申请人： Cedell Adam Alexander, JR. , Christopher Y. Metz , Jim Guichard , David Delano Ward
发明人： Cedell Adam Alexander, JR. , Christopher Y. Metz , Jim Guichard , David Delano Ward
IPC分类号： H04L12/721 , H04L29/06
CPC分类号： H04L45/14 , H04L12/4633 , H04L63/0272
摘要： Packets are encapsulated and sent from a service node to an application node for applying one or more Layer-4 to Layer-7 services to the packets, with service-applied packets being returned to the service node. An identification of a virtual private network (VPN) may be carried within a request packet, encapsulating a particular packet, sent by a service node to an application node for applying a service to the particular packet; with the corresponding response packet sent to the service node including an identification of the VPN for use by the service node in forwarding the services-applied packet. Additionally, parameters may be included in a request packet to identify a particular service of a general service to be applied to a particular packet encapsulated in the request packet.
摘要翻译：数据包被封装并从服务节点发送到应用节点，以将一个或多个第4层到第7层服务应用于数据包，并将服务应用的数据包返回给服务节点。虚拟专用网（VPN）的标识可以在由服务节点发送的请求分组中包含的特定分组携带到应用节点，以将服务应用于特定分组; 其中发送到服务节点的相应响应分组包括VPN的标识，以供服务节点在转发服务应用分组时使用。此外，可以在请求分组中包括参数以识别要应用于封装在请求分组中的特定分组的一般服务的特定服务。

5. 发明申请

US20150301963A1 Dynamic Temporary Use of Packet Memory As Resource Memory 有权
标题翻译：动态临时使用包内存作为资源内存
公开(公告)号：US20150301963A1
公开(公告)日：2015-10-22
申请号：US14257430
申请日：2014-04-21
申请人： Mohammed Ismael Tatar , Promode Nedungadi , Naader Hasani , John C. Carney
发明人： Mohammed Ismael Tatar , Promode Nedungadi , Naader Hasani , John C. Carney
IPC分类号： G06F13/16 , G06F5/10
CPC分类号： G06F13/1673 , H04L49/9005
摘要： In one embodiment, packet memory and resource memory of a memory are independently managed, with regions of packet memory being freed of packets and temporarily made available to resource memory. In one embodiment, packet memory regions are dynamically made available to resource memory so that in-service system upgrade (ISSU) of a packet switching device can be performed without having to statically allocate (as per prior systems) twice the memory space required by resource memory during normal packet processing operations. One embodiment dynamically collects fragments of packet memory stored in packet memory to form a contiguous region of memory that can be used by resource memory in a memory system that is shared between many clients in a routing complex. One embodiment assigns a contiguous region no longer used by packet memory to resource memory, and from resource memory to packet memory, dynamically without packet loss or pause.
摘要翻译：在一个实施例中，独立地管理存储器的分组存储器和资源存储器，其中分组存储器的区域不分组，并且临时使得资源存储器可用。在一个实施例中，分组存储器区域被动态地用于资源存储器，使得可以执行分组交换设备的在役系统升级（ISSU），而不必静态地（按照现有系统）分配资源所需的存储空间的两倍正常数据包处理操作时的内存。一个实施例动态地收集存储在分组存储器中的分组存储器的片段以形成可由路由复合体中的许多客户端之间共享的存储器系统中的资源存储器使用的存储器的连续区域。一个实施例将分组存储器不再使用的连续区域分配给资源存储器，以及从资源存储器到分组存储器，动态地将数据包丢失或暂停分配。

6. 发明申请

US20150139225A1 Filtering on Classes and Particulars of a Packet Destination Address at Lower-Protocol Layers in a Networked Device 有权
标题翻译：过滤网络设备中较低协议层的数据包目的地地址的类别和详细信息
公开(公告)号：US20150139225A1
公开(公告)日：2015-05-21
申请号：US14155582
申请日：2014-01-15
申请人： Pascal Thubert , Shwetha Subray Bhandari
发明人： Pascal Thubert , Shwetha Subray Bhandari
IPC分类号： H04L12/725 , H04L12/741 , H04L12/18
CPC分类号： H04L45/16 , H04L12/185 , H04L12/1886 , H04L69/22
摘要： In one embodiment, a lower protocol layer in a network device filters packets based on a class and a particular of a destination address prior to sending information from the received packet to a higher protocol layer. For example, certain constrained networks include network nodes that do not have the ability to maintain a multicast distribution entry for each multicast address used in the network. By only forwarding on a portion of a multicast address, packets are often delivered to nodes in addition to the actual multicast subscribers. By filtering these incorrectly delivered packets at a lower protocol layer (e.g., layer-2 or layer-3), processing cycles at higher protocol layers are avoided. Additionally in one embodiment, class and particulars are deterministically determined (e.g., using a same hashing function) such that services can be discovered and used by subscribing to a corresponding multicast group.
摘要翻译：在一个实施例中，网络设备中的较低协议层在将信息从接收的分组发送到较高协议层之前，基于目的地地址的类别和特定的过滤分组。例如，某些受限网络包括不具有为网络中使用的每个多播地址维护多播分发条目的能力的网络节点。通过仅转发多播地址的一部分，除了实际的多播用户之外，分组经常被递送到节点。通过在较低协议层（例如，第2层或第3层）处对这些错误传递的分组进行过滤，可以避免较高协议层的处理周期。另外在一个实施例中，类和细节被确定性地确定（例如，使用相同的散列函数），使得可以通过订阅对应的多播组来发现和使用服务。

7. 发明申请

US20150029948A1 Protecting Packet Traffic in a Network Including an Adaptive Bandwidth Link 有权
标题翻译：保护包含自适应带宽链路的网络中的数据包流量
公开(公告)号：US20150029948A1
公开(公告)日：2015-01-29
申请号：US14029600
申请日：2013-09-17
申请人： Kannan Jayaraman , Samer Salam , Shwetha Subray Bhandari , Jose A. Liste
发明人： Kannan Jayaraman , Samer Salam , Shwetha Subray Bhandari , Jose A. Liste
IPC分类号： H04W40/02
CPC分类号： H04W40/02 , H04L45/125 , H04L45/24 , H04W40/12
摘要： In one embodiment, a packet switching device receives a notification that a link has a diminished packet transport capacity. In response, the packet switching devices changes forwarding information for a portion of the packet traffic being sent over the diminished packet transport capacity link to traverse one or more reroute paths not including the diminished link, while some packet traffic continues to use the diminished packet transport capacity link. This notification can be received directly from a communications device, or via a routing protocol such as for a remote link that sent packet traffic may traverse. These rerouted paths may be precomputed and installed in forwarding data structures for fast rerouting, or computed and installed in response to receiving the notification. In one embodiment, quality of service (QoS) is adjusted in response to receiving the notification.
摘要翻译：在一个实施例中，分组交换设备接收到链路具有减小的分组传输能力的通知。作为响应，分组交换设备改变通过减小的分组传输能力链路发送的分组业务的一部分的转发信息，以遍历不包括减少的链路的一个或多个重路由路径，而一些分组业务继续使用减少的分组传输容量链接。该通知可以直接从通信设备接收，或通过路由协议（例如，发送数据包流量可以遍历的远程链路）来接收。这些重新路由的路径可以预先计算并安装在转发数据结构中，以便快速重新路由，或者计算和安装响应于接收到通知。在一个实施例中，响应于接收到通知而调整服务质量（QoS）。

8. 发明申请

US20150023326A1 Installation of Time Slots for Sending a Packet through an ARC Chain Topology Network 有权
标题翻译：安装通过ARC链拓扑网络发送数据包的时隙
公开(公告)号：US20150023326A1
公开(公告)日：2015-01-22
申请号：US14020930
申请日：2013-09-09
申请人： Pascal Thubert , Jean-Philippe Vasseur , Patrick Wetterwald
发明人： Pascal Thubert , Jean-Philippe Vasseur , Patrick Wetterwald
IPC分类号： H04J3/16
CPC分类号： H04W72/0446 , H04J3/1694 , H04L43/067 , H04L43/0876 , H04L45/32 , H04W40/023
摘要： One embodiment includes: determining, by a particular networked device, sending and receiving time slots for progressively communicating a particular packet among nodes of an arc of an Available Routing Construct (ARC) chain topology network in both directions on the arc to reach each edge node of the arc; and determining, by the particular networked device, for each edge node of the arc a predetermined respective time slot for communicating the particular packet to a respective child node on a second arc of the ARC chain topology network. One embodiment includes respectively installing said determined time slots in said nodes of the arc. In one embodiment, the network is a wireless deterministic network. In one embodiment, the predetermined respective time slot for each particular edge node is after all time slots in which the particular packet could be received by said particular edge node.
摘要翻译：一个实施例包括：由特定联网设备确定发送和接收时隙，用于在弧上的两个方向上的可用路由构造（ARC）链拓扑网络的弧的节点之间逐渐传送特定分组，以到达每个边缘节点的弧; 以及由所述特定网络设备为所述弧的每个边缘节点确定用于将所述特定分组传送到所述ARC链拓扑网络的第二弧上的相应子节点的预定相应时隙。一个实施例包括在电弧的所述节点中分别安装所述确定的时隙。在一个实施例中，网络是无线确定性网络。在一个实施例中，每个特定边缘节点的预定相应时隙在所有特定分组可被所述特定边缘节点接收的所有时隙之后。

9. 发明申请

US20150006692A1 Hierarchical Scheduling System with Layer Bypass 有权
标题翻译：层次绕过的分层调度系统
公开(公告)号：US20150006692A1
公开(公告)日：2015-01-01
申请号：US13929779
申请日：2013-06-28
申请人： Ratan Ramchandani , Sreedhar Ravipalli , Mohammed Ismael Tatar
发明人： Ratan Ramchandani , Sreedhar Ravipalli , Mohammed Ismael Tatar
IPC分类号： H04L12/24
CPC分类号： H04L47/60 , H04L45/02 , H04L47/41 , H04L47/624
摘要： In one embodiment, a hierarchical scheduling system including multiple scheduling layers with layer bypass is used to schedule items (e.g., corresponding to packets). This scheduling of items performed in one embodiment includes: propagating first items through the hierarchical scheduling system and updating scheduling information in each of the plurality of scheduling layers based on said propagated first items as said propagated first items propagate through the plurality of scheduling layers, and bypassing one or more scheduling layers of the plurality of scheduling layers for scheduling bypassing items and updating scheduling information in each of said bypassed one or more scheduling layers based on said bypassing items. In one embodiment, this method is performed by a particular machine. In one embodiment, the operations of propagating first items through the hierarchical scheduling system and bypassing one or more scheduling layers are done in parallel.
摘要翻译：在一个实施例中，使用包括具有层旁路的多个调度层的分级调度系统来调度项目（例如，对应于分组）。在一个实施例中执行的项目的调度包括：通过分层调度系统传播第一项目，并且在所述传播的第一项目通过多个调度层传播时，基于所述传播的第一项目来更新多个调度层中的每一个中的调度信息，以及绕过所述多个调度层中的一个或多个调度层用于调度旁路项目，并基于所述旁路项目来更新每个所述旁路的一个或多个调度层中的调度信息。在一个实施例中，该方法由特定机器执行。在一个实施例中，通过分层调度系统传播第一个项目并绕过一个或多个调度层的操作是并行完成的。

10. 发明申请

US20150003255A1 Probe Packet Discovery of Entropy Values Causing Specific Paths to be Taken Through a Network 有权
标题翻译：熵值的探测包发现导致通过网络获取特定路径
公开(公告)号：US20150003255A1
公开(公告)日：2015-01-01
申请号：US13928327
申请日：2013-06-26
申请人： Daniel C. Frost , Stewart Frederick Bryant
发明人： Daniel C. Frost , Stewart Frederick Bryant
IPC分类号： H04L12/707
CPC分类号： H04L45/24 , H04L43/12
摘要： In one embodiment, probe-packet discovery of entropy values causing specific paths to be taken through a network is performed. One embodiment sends, from a first network node to a second network node in a network, a plurality of Equal Cost Multipath (ECMP) path-taken probe packets, each with a different entropy label, to determine a particular entropy label for each particular ECMP path of a plurality of different ECMP paths between the first network node and the second network node that will cause a packet including the particular entropy label to traverse said particular ECMP path. The ECMP paths taken by the plurality of ECMP path-taken probe packets is analyzed to determine one or more entropy labels for each different ECMP path of the plurality of different ECMP paths that will cause a packet including one of said one or more entropy labels to traverse said different ECMP path.
摘要翻译：在一个实施例中，执行引起通过网络拍摄特定路径的熵值的探测包发现。一个实施例从网络中的第一网络节点向第二网络节点发送多个具有不同熵标签的等价成本多径（ECMP）路径获取探测分组，以确定每个特定ECMP的特定熵标签在第一网络节点和第二网络节点之间的多个不同的ECMP路径的路径将导致包括特定熵标签的包穿过所述特定的ECMP路径。分析由多个ECMP路径获取的探测分组采取的ECMP路径，以确定将导致包括所述一个或多个熵标签之一的分组的多个不同ECMP路径中的每个不同ECMP路径的一个或多个熵标签遍历所述不同的ECMP路径。

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