公开(公告)号：US10263852B2

公开(公告)日：2019-04-16

申请号：US15386535

申请日：2016-12-21

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Pavala Manikandaraja Prabakaran ,  Dhivya Pavala Manikandaraja ,  Japan Bhadreshkumar Patel ,  Umakanth Srinivasan ,  Suyog Subhash Belsare ,  Samer Salam

IPC: G06F15/173 ,  H04L12/24

Abstract: In one embodiment, a method includes processing network data models at a network device configured to operate in a network comprising one or more network components associated with one of the network data models, generating representations of the network data models, the representations comprising labels for elements in the network data models, comparing the labels associated with leaf nodes of the network data models to identify matching leaf nodes, comparing the labels associated with parent nodes of the matching leaf nodes to identify a strength of matching, and mapping at least two of the network data models at the network device based on the strength of matching for use in a network application. An apparatus and logic are also disclosed herein.

公开(公告)号：US20190028379A1

公开(公告)日：2019-01-24

申请号：US16127078

申请日：2018-09-10

Applicant: Cisco Technology, Inc.

Inventor： Norman W. Finn ,  Samer Salam ,  John Monaghan ,  Iain McDade ,  David Alexander Ball ,  Simon Chatterjee

IPC: H04L12/751 ,  H04L12/721 ,  H04L12/24 ,  H04L12/46 ,  H04L12/26

Abstract: In one embodiment, an exploratory linktrace is initiated from an initiating network device with an exploratory linktrace message (ELM) having a target address. Each network device receiving the ELM may then propagate the ELM on a plurality of its ports to a plurality of downstream network devices based on the target address. In addition, each receiving network device returns an exploratory linktrace reply (ELR) for each of the plurality of ports, where each ELR is returned according to one or more mechanisms to mitigate stormed replies to the initiating network device.

公开(公告)号：US10084684B2

公开(公告)日：2018-09-25

申请号：US15654054

申请日：2017-07-19

Applicant: Cisco Technology, Inc.

Inventor： Norman W. Finn ,  Samer Salam ,  John Monaghan ,  Iain McDade ,  David Alexander Ball ,  Simon Chatterjee

IPC: H04L12/751 ,  H04L12/24 ,  H04L12/721 ,  H04L12/46 ,  H04L12/26

CPC classification number: H04L45/02 ,  H04L12/462 ,  H04L41/12 ,  H04L43/10 ,  H04L45/26

Abstract: In one embodiment, an exploratory linktrace is initiated from an initiating network device with an exploratory linktrace message (ELM) having a target address. Each network device receiving the ELM may then propagate the ELM on a plurality of its ports to a plurality of downstream network devices based on the target address. In addition, each receiving network device returns an exploratory linktrace reply (ELR) for each of the plurality of ports, where each ELR is returned according to one or more mechanisms to mitigate stormed replies to the initiating network device.

公开(公告)号：US20170359250A1

公开(公告)日：2017-12-14

申请号：US15689141

申请日：2017-08-29

Applicant: Cisco Technology, Inc.

Inventor： Eric A. Voit ,  Samer Salam ,  Ludwig Alexander Clemm ,  Yegnanarayanan Gargya Chandramouli

IPC: H04L12/707 ,  H04L12/703 ,  H04L12/24 ,  H04L12/803

CPC classification number: H04L45/22 ,  H04L41/0672 ,  H04L41/0873 ,  H04L45/28 ,  H04L47/122

Abstract: An example method for facilitating conflict avoidant traffic routing in a network environment is provided and includes detecting, at a network element, an intent conflict at a peer network element in a network, and changing a forwarding decision at the network element to steer traffic around the conflicted peer network element. The intent conflict refers to an incompatibility between an asserted intent associated with the traffic and an implemented intent associated with the traffic. In specific embodiments, the detecting includes mounting rules from the peer network element into the network element, and analyzing the mounted rules to determine intent conflict. In some embodiments, a central controller in the network deploys one or more intentlets on a plurality of network elements in the network according to corresponding intent deployment parameters.

公开(公告)号：US09820178B2

公开(公告)日：2017-11-14

申请号：US14844448

申请日：2015-09-03

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Shwetha Subray Bhandari ,  Samer Salam ,  Kannan Jayaraman ,  Arvind Saproo

IPC: H04W28/02 ,  H04W24/02 ,  H04W40/12 ,  H04L12/751

CPC classification number: H04W28/0236 ,  H04L45/02 ,  H04W24/02 ,  H04W40/12

Abstract: A method is provided in one example and includes receiving a current bandwidth characteristic for a link, where the current bandwidth characteristic is determined under fading conditions associated with signal propagation on the link. The method can also include calculating a new cost for the link that is different from a nominal cost associated with a nominal bandwidth of the link without the fading conditions. The method could also include routing at least a portion of a plurality of flows that are to traverse the link away from the link based, at least in part, on the new cost. Another example method includes receiving the current bandwidth characteristic for the link, comparing the current bandwidth characteristic with a preconfigured low watermark corresponding to a class-specific MTR topology associated with a class of traffic traversing the link, and removing the link from the MTR topology based on the current bandwidth characteristic.

公开(公告)号：US09800432B2

公开(公告)日：2017-10-24

申请号：US14740417

申请日：2015-06-16

Applicant: Cisco Technology, Inc.

Inventor： Pravin Gohite ,  Samer Salam

IPC: H04L12/46 ,  H04L12/437 ,  H04L12/24 ,  H04L12/703 ,  H04L12/721

CPC classification number: H04L12/437 ,  H04L12/4641 ,  H04L41/0654 ,  H04L45/28 ,  H04L45/66

Abstract: In one embodiment, a first routing device establishes a virtual channel with a remote routing device in a G.8032 protocol Ethernet network ring. The first routing device and the remote routing device each being linked to a multi-homed routing device having Layer 2 connectivity to a core network. The multi-homed routing device is not configured with the G.8032 protocol. The first routing device identifies a link state from the first routing device to the multi-homed routing device. Layer 2 connectivity of the first routing device to the core network is controlled based upon the identified link state of the first routing device.

公开(公告)号：US09742655B2

公开(公告)日：2017-08-22

申请号：US14320266

申请日：2014-06-30

Applicant: Cisco Technology, Inc.

Inventor： Norman W. Finn ,  Samer Salam ,  John Monaghan ,  Iain McDade ,  David Alexander Ball ,  Simon Chatterjee

IPC: H04L12/751 ,  H04L12/721 ,  H04L12/24 ,  H04L12/46 ,  H04L12/26

CPC classification number: H04L45/02 ,  H04L12/462 ,  H04L41/12 ,  H04L43/10 ,  H04L45/26

Abstract: In one embodiment, an exploratory linktrace is initiated from an initiating network device with an exploratory linktrace message (ELM) having a target address. Each network device receiving the ELM may then propagate the ELM on a plurality of its ports to a plurality of downstream network devices based on the target address. In addition, each receiving network device returns an exploratory linktrace reply (ELR) for each of the plurality of ports, where each ELR is returned according to one or more mechanisms to mitigate stormed replies to the initiating network device.

公开(公告)号：US20160292581A1

公开(公告)日：2016-10-06

申请号：US14677768

申请日：2015-04-02

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Eric A. Voit ,  Samer Salam

IPC: G06N5/04

CPC classification number: G06N5/047 ,  H04L41/0233 ,  H04L41/0866 ,  H04L41/0893

Abstract: An aspect of the present disclosure aims to reduce or eliminate the problems associated with processing quickly changing large sets of data. To that end, systems and methods are disclosed, enabling a semantic reasoner to identify and process incremental changes to a rules base rather than re-processing the entire rules base. Such incremental stream reasoning (i.e., only reasoning upon pushed object changes) provides an efficient and fast manner for reacting to quickly changing data.

Abstract translation: 本公开的一个方面旨在减少或消除与处理快速变化的大量数据相关联的问题。 为此，公开了系统和方法，使得语义推理者能够识别和处理规则库的增量更改，而不是重新处理整个规则库。 这种增量流推理（即仅推动对象改变时的推理）提供了用于对快速变化的数据做出反应的有效且快速的方式。

公开(公告)号：US20160286462A1

公开(公告)日：2016-09-29

申请号：US15178322

申请日：2016-06-09

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Pravin K. Gohite ,  Samer Salam

IPC: H04W40/34 ,  H04L12/729 ,  H04L12/707 ,  H04W40/12

CPC classification number: H04W40/34 ,  H04L45/125 ,  H04L45/22 ,  H04W40/12

Abstract: A method provided in one example embodiment includes detecting a first current bandwidth of a first link in a network ring, where the first current bandwidth indicates a signal degradation on the first link. The method also includes determining whether the first current bandwidth has degraded more than a second current bandwidth of a second link in the network ring, where the second current bandwidth indicates a signal degradation on the second link. The method further includes routing one or more network flows away from the first link if the first current bandwidth has degraded more than the second current bandwidth.

Abstract translation: 在一个示例实施例中提供的方法包括检测网络环中的第一链路的第一当前带宽，其中第一当前带宽指示第一链路上的信号劣化。 所述方法还包括确定所述第一当前带宽是否已经比所述网络环中的第二链路的第二当前带宽降级，其中所述第二当前带宽指示所述第二链路上的信号劣化。 该方法还包括如果第一当前带宽已经比第二当前带宽降级，则将一个或多个网络流远离第一链路路由。

公开(公告)号：US20150280940A1

公开(公告)日：2015-10-01

申请号：US14740512

申请日：2015-06-16

Applicant: Cisco Technology, Inc.

Inventor： Ali Sajassi ,  Samer Salam ,  Sami Boutros

IPC: H04L12/46 ,  H04L12/18 ,  H04L29/12 ,  H04L12/751

CPC classification number: H04L12/4679 ,  H04L12/1863 ,  H04L45/02 ,  H04L45/48 ,  H04L45/50 ,  H04L61/2069

Abstract: Techniques for stitching multicast trees in a multiple data center environment. According to one embodiment, a technique for stitching multicast trees is provided, which includes determining, at an edge device of a data center, one or more Virtual Local Area Networks (VLANs) assigned to the edge device as a result of a designated forwarder election. An assigned forwarder message is sent by the edge device to one or more devices on the data center, the assigned forwarder message advertising the edge device as a designated forwarder for the VLANs assigned to the edge device. For each of the VLANs assigned to the edge device, the assigned forwarder message causes the edge device to be included in a multicast tree for the VLAN when the assigned forwarder message is received by specific ones of the devices in the data center that are associated with the VLAN.

Abstract translation: 在多数据中心环境中拼接多播树的技术。 根据一个实施例，提供了一种用于拼接多播树的技术，其包括在数据中心的边缘设备处确定由于指定的转发器选举而分配给边缘设备的一个或多个虚拟局域网（VLAN） 。 分配的转发器消息由边缘设备发送到数据中心上的一个或多个设备，所分配的转发器消息将边缘设备通告为分配给边缘设备的VLAN的指定转发器。 对于分配给边缘设备的每个VLAN，分配的转发器消息使得边缘设备被包含在VLAN的多播树中，当分配的转发器消息被数据中心中与数据中心相关联的特定设备接收时 VLAN。