公开(公告)号：US10469278B2

公开(公告)日：2019-11-05

申请号：US15792609

申请日：2017-10-24

Applicant: Cisco Technology, Inc.

Inventor： Om Prakash Suthar ,  Rajiv Asati ,  Nagendra Kumar Nainar ,  Carlos M. Pignataro

IPC: H04L12/18 ,  H04L12/26 ,  H04W48/16 ,  H04L12/24 ,  H04L12/741 ,  H04L29/06

Abstract: In accordance with various implementations, a method is performed at a multicast gateway node within an operator network, where the multicast gateway node includes one or more processors, non-transitory memory, an ingress interface, and one or more egress interfaces. The method includes determining a multicast identifier for a user device in response to obtaining a registration request associated with the user device. The method also includes generating a header for a multicast data stream based at least in part on the multicast identifier in response to obtaining a multicast flow join request. The method further includes populating a packet associated with the multicast data stream with the header. The method further includes forwarding the packet to the user device via a portion of the one or more egress interfaces, where the portion of the one or more egress interfaces is associated with the user device.

公开(公告)号：US10454828B2

公开(公告)日：2019-10-22

申请号：US15386306

申请日：2016-12-21

Applicant: Cisco Technology, Inc.

Inventor： Carlos M. Pignataro ,  Nagendra Kumar Nainar ,  Rajiv Asati ,  K. Tirumaleswar Reddy

IPC: H04L12/26 ,  H04L12/46 ,  H04L12/733 ,  H04L29/06 ,  H04L12/801 ,  H04L12/911 ,  H04L12/707 ,  H04L12/24

Abstract: In one embodiment, a device in a network receives in-situ operations administration and management (iOAM) data regarding a plurality of traffic flows in the network. The iOAM data comprises entropy values for the plurality of traffic flows. The device receives network topology information indicative of network paths available in the network. The device generates a machine learning-based entropy topology model for the network based on the received iOAM data and the received network topology information. The entropy topology model maps path selection predictions for the network paths with entropy values. The device uses the entropy topology model to cause a particular traffic flow to use a particular network path.

公开(公告)号：US20190312818A1

公开(公告)日：2019-10-10

申请号：US16449991

申请日：2019-06-24

Applicant: Cisco Technology, Inc.

Inventor： Nagendra Kumar Nainar ,  Carlos M. Pignataro ,  Rajiv Asati

IPC: H04L12/841 ,  H04L12/851 ,  H04L12/717 ,  H04L12/721 ,  H04L29/06 ,  H04L29/08 ,  H04L12/725

Abstract: In some aspects, a method of the technology can include steps for sending a packet along a service function chain (SFC) to an egress node, the SFC comprising a plurality of service function forwarders (SFFs), wherein each SFF is associated with at least one service function (SF), and receiving the packet at a first SFF in the SFC, wherein the first SFF is associated with a first SF. In some aspects, the first SFF can also be configured to perform operations including: reading an option flag of the packet, and determining whether to forward the packet to the first based on the option flag. Systems and machine-readable media are also provided.

公开(公告)号：US10419550B2

公开(公告)日：2019-09-17

申请号：US15203759

申请日：2016-07-06

Applicant: Cisco Technology, Inc.

Inventor： Nagendra Kumar Nainar ,  Rajiv Asati ,  Carlos M. Pignataro

IPC: H04L29/08 ,  H04L12/721 ,  H04L12/26 ,  H04L12/24

Abstract: Systems, methods, and computer-readable media for improving the reliability of service function (SF) application in a service function chain (SFC) are provided. In some aspects, the subject technology facilitates automatic service function type validation by a service function forwarder (SFF), for example, by using a probe configured to query a function type of a SF module associated with the validating SFF.

公开(公告)号：US10404592B2

公开(公告)日：2019-09-03

申请号：US15469306

申请日：2017-03-24

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Rajiv Asati ,  Nagendra Kumar Nainar ,  Carlos M. Pignataro

IPC: H04L12/741 ,  H04L29/06 ,  H04L29/08 ,  H04L12/715

Abstract: A method is provided in one example embodiment and may include receiving a packet by a forwarder in an Information-Centric Networking (ICN) network; determining Bit Index Explicit Replication (BIER) information associated with the packet; and forwarding the packet based, at least in part, on the BIER information associated with the packet. The packet can be an interest packet or a data packet received by the forwarder in the ICN network.

公开(公告)号：US20190182127A1

公开(公告)日：2019-06-13

申请号：US15834291

申请日：2017-12-07

Applicant: Cisco Technology, Inc.

Inventor： Carlos M. Pignataro ,  Nagendra Kumar Nainar ,  Rajiv Asati

IPC: H04L12/24 ,  G06N99/00

Abstract: A method is provided to generate a network risk heatmap. The method includes obtaining first data related to technical support and operations issues of a network that includes a plurality of network elements and second data related to updates and configurations of the network. The method involves analyzing the first data and the second to generate a device risk heatmap rule that determines a level of predictive failure risk as a function of network telemetry data indicative of real-time operations of the network. The method further includes applying the device risk heatmap rule to network telemetry data collected from the network to create a network heatmap representing a level of predictive failure risk for the plurality of network elements in the network. The method then includes instantiating a path or tunnel in the network based on the network heatmap.

公开(公告)号：US20180270113A1

公开(公告)日：2018-09-20

申请号：US15460391

申请日：2017-03-16

Applicant: Cisco Technology, Inc.

Inventor： Nagendra Kumar Nainar ,  Carlos M. Pignataro ,  Rajiv Asati ,  Roque Gagliano

IPC: H04L12/24 ,  H04L12/851 ,  H04L12/26

CPC classification number: H04L43/0876 ,  H04L41/16 ,  H04L41/5019

Abstract: In one embodiment, a device in a network receives traffic sent via a service function chain (SFC). The device models one or more behavioral characteristics of the traffic using a machine learning-based service function in the SFC. The device causes a change to the SFC based on the modeled one or more behavioral characteristics of the traffic.

公开(公告)号：US09876736B2

公开(公告)日：2018-01-23

申请号：US14527289

申请日：2014-10-29

Applicant: Cisco Technology, Inc.

Inventor： Ijsbrand Wijnands ,  Nagendra K. Nainar ,  Rajiv Asati ,  Carlos M. Pignataro

IPC: H04L12/26 ,  H04L12/931 ,  H04L12/18 ,  H04L29/12 ,  H04L12/749 ,  H04L12/761

CPC classification number: H04L49/201 ,  H04L12/185 ,  H04L45/16 ,  H04L45/741 ,  H04L61/2069

Abstract: In one embodiment, a first device in a multicast label distribution (mLDP) network receives a first label mapping message that includes IPv4 and IPv6 addresses of a root node of a multicast tree. The first device also receives a second label mapping message from a second device that identifies the multicast tree and includes one of: the IPv4 address or the IPv6 address of the root node. The first device determines that the second label mapping message is associated with the multicast tree. In response to determining that the second label mapping message is associated with the multicast tree, the first device adds the second device to the multicast tree.

公开(公告)号：US09756013B2

公开(公告)日：2017-09-05

申请号：US14328296

申请日：2014-07-10

Applicant: Cisco Technology, Inc.

Inventor： Rajiv Asati ,  Wojciech Dec ,  Yixing Ruan

IPC: H04L29/12

CPC classification number: H04L61/6059 ,  H04L61/2015 ,  H04L61/251 ,  H04L61/6063

Abstract: In one embodiment, a provider edge (PE) device in a computer network determines an IPv4 address and link-layer address for each adjacent customer premise equipment (CPE) device, and assigns each CPE device a unique IPv6 address. The PE device stores a key-pair mapping between the unique IPv6 address and combined IPv4 and link-layer address for each adjacent CPE, the mapping bound by a CPE session context, and uses the CPE session context to convert between IPv4 and IPv6 for all network traffic to and from a particular CPE device.

公开(公告)号：US09544282B2

公开(公告)日：2017-01-10

申请号：US14983001

申请日：2015-12-29

Applicant: Cisco Technology, Inc.

Inventor： Aamer S. Akhter ,  Rajiv Asati ,  Brian Weis ,  Mohamed Khalid

IPC: H04L29/06 ,  G06F15/16 ,  H04L9/08 ,  H04L29/12

CPC classification number: H04L63/065 ,  H04L9/0833 ,  H04L9/0891 ,  H04L61/2076 ,  H04L63/0272 ,  H04L63/0428

Abstract: In an embodiment, a method comprises obtaining a second network address at a computer node, which has been already associated with a first network address and provided first keying information; sending, to a key server computer, an update message that comprises both the first network address and the second network address; using the first keying information to encrypt messages that the computer node sends from the second network address to one or more other members of a group.

Abstract translation: 在一个实施例中，一种方法包括获得已经与第一网络地址相关联并提供第一密钥信息的计算机节点处的第二网络地址; 向密钥服务器计算机发送包括所述第一网络地址和所述第二网络地址的更新消息; 使用第一密钥信息将计算机节点从第二网络地址发送的消息加密到组的一个或多个其他成员。