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公开(公告)号：US20140269699A1
公开(公告)日：2014-09-18
申请号：US14210837
申请日：2014-03-14
Applicant: Cisco Technology, Inc.
Inventor： Clarence Filsfils , David D. Ward , Stewart F. Bryant , Daniel C. Frost , Nagendra Kumar Nainer , Carlos M. Pignataro
IPC: H04L12/715
CPC classification number: H04L41/12 , H04L12/4633 , H04L45/04 , H04L45/12 , H04L45/46 , H04L45/50 , H04L45/507 , H04L45/54 , H04L45/74 , H04L45/745 , H04L47/724 , H04L49/608
Abstract: In one embodiment, a packet and a segment ID stack is received at a node. The segment ID stack includes a plurality of segment IDs, one or which is a first area-segment ID that identifies a first area of a subdivided network. One of a plurality of forwarding tables at the node is selected based on the first area-segment ID. Thereafter, the packet is forwarded based on information contained in the selected forwarding table.
Abstract translation: 在一个实施例中，在节点处接收分组和分段ID堆栈。 片段ID堆叠包括多个片段ID，一个或者是标识细分网络的第一区域的第一区域段ID。 基于第一区域段ID选择节点处的多个转发表之一。 此后，基于所选择的转发表中包含的信息来转发该分组。
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公开(公告)号：US20140143409A1
公开(公告)日：2014-05-22
申请号：US13957533
申请日：2013-08-02
Applicant: Cisco Technology, Inc.
Inventor： Zafar Ali , Muthurajah Sivabalan , Clarence Filsfils , Jan Medved
IPC: H04L12/26
CPC classification number: H04L41/5051 , H04L41/0896 , H04L43/0876 , H04L47/825
Abstract: Bandwidth usage for an existing communication tunnel between a first device and second device is monitored. A determination is made that additional bandwidth is required for communication between the first network device and the second network device. A determination is made that for the addition of the additional bandwidth would exceed available bandwidth for the existing tunnel. Additional bandwidth is established between the first network device and the second network device.
Abstract translation: 监视第一设备和第二设备之间现有通信隧道的带宽使用情况。 确定第一网络设备和第二网络设备之间的通信需要额外的带宽。 确定附加带宽的增加将超过现有隧道的可用带宽。 在第一网络设备和第二网络设备之间建立额外的带宽。
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263.发明申请IDENTIFYING, TRANSLATING AND FILTERING SHARED RISK GROUPS IN COMMUNICATIONS NETWORKS 有权在通信网络中识别，翻译和过滤共享的风险组公开(公告)号：US20140126355A1
公开(公告)日：2014-05-08
申请号：US14155640
申请日：2014-01-15
Applicant: Cisco Technology, Inc.
Inventor： Clarence Filsfils , George L. Swallow
IPC: H04L12/703 , H04L12/707
CPC classification number: H04L45/28 , H04L12/4645 , H04L45/04 , H04L45/22 , H04L45/66
Abstract: A method, apparatus, and computer-readable storage medium are disclosed for processing shared risk group (SRG) information in communications networks. The method includes obtaining at least one SRG identifier by processing SRG information included in network information received at a first network layer from a second network layer, and processing the at least one SRG identifier using one or more operations configured to ensure that the SRG identifier is unique among a plurality of SRG identifiers. The apparatus includes a network interface adapted to receive network information comprising SRG information, a processor coupled to the network interface, and a memory coupled to the processor and adapted to obtain at least one SRG identifier by processing the SRG information and to process the at least one SRG identifier. The computer-readable storage medium is configured to store program instructions that when executed are configured to cause a processor to perform the method.
Abstract translation: 公开了用于处理通信网络中的共享风险组（SRG）信息的方法，装置和计算机可读存储介质。 该方法包括通过处理包括在第一网络层从第二网络层接收的网络信息中的SRG信息来获得至少一个SRG标识符，以及使用一个或多个操作来处理该至少一个SRG标识符，该操作被配置为确保SRG标识符是 在多个SRG标识符中是唯一的。 所述设备包括网络接口，适于接收包括SRG信息的网络信息，耦合到所述网络接口的处理器以及耦合到所述处理器的存储器，并且适于通过处理所述SRG信息来获得至少一个SRG标识符并且至少处理 一个SRG标识符。 计算机可读存储介质被配置为存储当被执行时被配置为使处理器执行该方法的程序指令。
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公开(公告)号：US20130265894A1
公开(公告)日：2013-10-10
申请号：US13780253
申请日：2013-02-28
Applicant: CISCO TECHNOLOGY, INC.
Inventor： Clarence Filsfils , David Ward , Christopher Y. Metz , Peter De Vriendt
IPC: H04L12/26
CPC classification number: H04L43/00 , H04L41/00 , H04L41/0681 , H04L43/04 , H04L43/08 , H04L43/0805 , H04L45/70
Abstract: In one embodiment, a method includes receiving at a network device, route convergence measurements and traffic demand measurements from a plurality of routers, and computing network availability based on the measurements at the network device. The route convergence measurements are associated with route computations at the routers and the traffic demand measurements include portions of a demand matrix associated with the routers. An apparatus and logic are also disclosed herein.
Abstract translation: 在一个实施例中，一种方法包括在网络设备处接收来自多个路由器的路由收敛测量和业务需求测量，以及基于网络设备处的测量来计算网络可用性。 路由收敛测量与路由器上的路由计算相关联，并且业务需求测量包括与路由器相关联的需求矩阵的部分。 本文还公开了一种装置和逻辑。
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公开(公告)号：US20250150376A1
公开(公告)日：2025-05-08
申请号：US18758755
申请日：2024-06-28
Applicant: Cisco Technology, Inc.
Inventor： Pablo Camarillo Garvia , Clarence Filsfils , Ahmed Mohamed Ahmed Abdelsalam , Jisu Bhattacharya , Rakesh Gandhi , Sonia Ben Ayed
Abstract: Systems and techniques are provided for path tracing. For example, a process can include establishing a path tracing session associated with path tracing (PT) probe packets from a PT source node of an IPv6 network fabric. A PT probe packet can be received with a first IPv6 Destination Options Header with Path Tracing Option (DOH-PT) header that encodes path tracing information of the PT source node and indicates respective path tracing information for each PT midpoint node along a path from the PT source node to a PT sink node of the IPv6 network fabric. The received PT probe packet can be updated to include a second DOH-PT header that encodes path tracing information of the PT sink node. An updated PT probe packet includes the first and second DOH-PT headers and can be encapsulated with an additional IPv6 header corresponding to forwarding information of a collector node.
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Patent Agency Ranking
公开(公告)号：US12267233B2
公开(公告)日：2025-04-01
申请号：US17538513
申请日：2021-11-30
Applicant: Cisco Technology, Inc.
Inventor： Clarence Filsfils , Pablo Camarillo Garvia , Ahmed Mohamed Ahmed Abdelsalam , Francois Clad
IPC: H04L45/00 , H04L45/302 , H04L45/74
Abstract: Disclosed are systems, apparatuses, methods, and computer-readable media to encode network functions in a packet header. A method includes receiving a first packet from a source device that is to be delivered to a destination address through a network; determining a route to the destination address; identifying at least one network function for the first packet; encapsulating the first packet in a second packet, wherein a header of the second packet includes the route to the destination address in a destination address field and local processing metadata associated with the at least one network function in a source address field; and forwarding the second packet to a next network node of the network identified in the destination address.
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公开(公告)号：US20250062984A1
公开(公告)日：2025-02-20
申请号：US18934224
申请日：2024-10-31
Applicant: Cisco Technology, Inc.
Inventor： Clarence Filsfils , Ahmed Mohamed Ahmed Abdelsalam , Rakesh Gandhi , Jisu Bhattacharya , Pablo Camarillo Garvia
Abstract: This disclosure describes techniques for detecting and monitoring paths in a network. The techniques include causing a source node to generate probe packets to traverse a multi-protocol label switching (MPLS) network, for instance. In some examples, the probe packets include entropy values that correspond to individual equal-cost multi-path (ECMP) paths of the network. The probe packets may be received at an SDN controller from a sink node after traversing the network. Analysis of the probe packets allow path discovery and mapping of the entropy values to ECMP paths. The mapping of discovered paths may be used for optimization of network monitoring activities, including second subsequent probe packets over particular ECMP paths based on the mapped entropy values.
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公开(公告)号：US12206573B2
公开(公告)日：2025-01-21
申请号：US17691016
申请日：2022-03-09
Applicant: Cisco Technology, Inc.
Inventor： Clarence Filsfils , Ahmed Mohamed Ahmed Abdelsalam , Rakesh Gandhi , Jisu Bhattacharya , Pablo Camarillo Garvia
Abstract: This disclosure describes techniques for detecting and monitoring paths in a network. The techniques include causing a source node to generate probe packets to traverse a multi-protocol label switching (MPLS) network, for instance. In some examples, the probe packets include entropy values that correspond to individual equal-cost multi-path (ECMP) paths of the network. The probe packets may be received at an SDN controller from a sink node after traversing the network. Analysis of the probe packets allow path discovery and mapping of the entropy values to ECMP paths. The mapping of discovered paths may be used for optimization of network monitoring activities, including second subsequent probe packets over particular ECMP paths based on the mapped entropy values.
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公开(公告)号：US12206572B2
公开(公告)日：2025-01-21
申请号：US18372587
申请日：2023-09-25
Applicant: Cisco Technology, Inc.
Inventor： Rakesh Gandhi , Clarence Filsfils
IPC: H04L45/12 , H04L43/0852 , H04L45/50 , H04L12/46
Abstract: Techniques for utilizing entropy labels of a Multiprotocol Label Switching (MPLS) label stack for performing monitoring operations (e.g., telemetry, performance measurement, OAM, etc.) without altering the MPLS label stack and/or packet path (e.g., ECMP path). The techniques may include determining, by a node of a network, to perform a monitoring operation associated with traffic that is to be sent along a path through the network. In some examples, the node may receive a packet that is to be sent along the path and encapsulate the packet with an MPLS header. The MPLS header may include an entropy label, entropy label indicator, or other label that is capable of carrying a flag indicating the monitoring operation to be performed. The flag may be carried in a TTL field or traffic class field of the label such that the MPLS label stack is not altered to trigger the monitoring operation.
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公开(公告)号：US12137093B2
公开(公告)日：2024-11-05
申请号：US17814410
申请日：2022-07-22
Applicant: Cisco Technology, Inc.
IPC: H04L9/40
Abstract: In one embodiment, an apparatus of a LISP environment includes one or more processors and computer-readable non-transitory storage media coupled to the one or more processors. The computer-readable non-transitory storage media include instructions that, when executed by the one or more processors, cause the one or more processors to perform operations including receiving an attestation token from a first component of the LISP environment. The operations also include encoding the attestation token using a LISP message format. The operations further include distributing the encoded attestation token with a LISP signaling message to a third component of the LISP environment.
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