公开(公告)号：US20150117203A1

公开(公告)日：2015-04-30

申请号：US14244502

申请日：2014-04-03

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Clarence Filsfils ,  Thomas F. Telkamp ,  Alan Thornton Gous

IPC: H04L12/707 ,  H04L12/803 ,  H04L12/721

CPC classification number: H04L47/125 ,  H04L12/2854 ,  H04L12/4633 ,  H04L12/66 ,  H04L45/028 ,  H04L45/24 ,  H04L47/122 ,  H04L47/20

Abstract: An example method for segment routing based wide area network (WAN) orchestration in a network environment is provided and includes monitoring a segment routing (SR) enabled WAN environment in at least near real-time by a path computation element (PCE) located outside the WAN, receiving an event notification at the PCE, and performing traffic engineering using SR to reroute traffic off shortest paths. In one embodiment, where a current state of the WAN is not pre-computed, performing traffic engineering comprises optimizing routes to remove violation of any utilization policies, deploying the optimized routes in the WAN, re-optimizing routes for other parameters, and further deploying the re-optimized routes in the WAN. In another embodiment, performing traffic engineering comprises optimizing routes to remove violation of any utilization policies and for other parameters, and deploying the optimized routes in the WAN. In another embodiment, performing traffic engineering comprises deploying optimized routes in the WAN.

Abstract translation: 提供了一种用于在网络环境中基于广域网（WAN）业务流程的分段路由的示例方法，并且包括通过位于外部网络（WAN）的路径计算元件（PCE），至少近实时地监视启用了分段路由（SR）的WAN环境 WAN，在PCE接收到事件通知，并使用SR进行流量工程，将流量从最短路径重新路由。 在一个实施例中，当WAN的当前状态未预先计算时，执行流量工程包括优化路由以消除违反任何利用策略，在WAN中部署优化的路由，为其他参数重新优化路由，以及进一步部署 在WAN中重新优化的路由。 在另一个实施例中，执行流量工程包括优化路由以消除违反任何利用策略和其他参数，以及在WAN中部署优化的路由。 在另一个实施例中，执行流量工程包括在WAN中部署优化的路由。

公开(公告)号：US09369387B2

公开(公告)日：2016-06-14

申请号：US14244502

申请日：2014-04-03

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Clarence Filsfils ,  Thomas F. Telkamp ,  Alan Thornton Gous

IPC: H04L1/00 ,  H04L12/803

CPC classification number: H04L47/125 ,  H04L12/2854 ,  H04L12/4633 ,  H04L12/66 ,  H04L45/028 ,  H04L45/24 ,  H04L47/122 ,  H04L47/20

Abstract: An example method for segment routing based wide area network (WAN) orchestration in a network environment is provided and includes monitoring a segment routing (SR) enabled WAN environment in at least near real-time by a path computation element (PCE) located outside the WAN, receiving an event notification at the PCE, and performing traffic engineering using SR to reroute traffic off shortest paths. In one embodiment, where a current state of the WAN is not pre-computed, performing traffic engineering comprises optimizing routes to remove violation of any utilization policies, deploying the optimized routes in the WAN, re-optimizing routes for other parameters, and further deploying the re-optimized routes in the WAN. In another embodiment, performing traffic engineering comprises optimizing routes to remove violation of any utilization policies and for other parameters, and deploying the optimized routes in the WAN. In another embodiment, performing traffic engineering comprises deploying optimized routes in the WAN.

Abstract translation: 提供了一种用于在网络环境中基于广域网（WAN）业务流程的分段路由的示例方法，并且包括通过位于外部网络（WAN）上的路径计算元件（PCE）至少近实时地监视启用了分段路由（SR）的WAN环境 WAN，在PCE接收到事件通知，并使用SR进行流量工程，将流量从最短路径重新路由。 在一个实施例中，当WAN的当前状态未预先计算时，执行流量工程包括优化路由以消除违反任何利用策略，在WAN中部署优化的路由，为其他参数重新优化路由，以及进一步部署 在WAN中重新优化的路由。 在另一个实施例中，执行流量工程包括优化路由以消除违反任何利用策略和其他参数，以及在WAN中部署优化的路由。 在另一个实施例中，执行流量工程包括在WAN中部署优化的路由。

公开(公告)号：US20170099210A1

公开(公告)日：2017-04-06

申请号：US14874709

申请日：2015-10-05

Applicant: Cisco Technology, Inc.

Inventor： Reza Fardid ,  Alan Thornton Gous

IPC: H04L12/751 ,  H04L12/26

CPC classification number: H04L43/08 ,  H04L41/0833 ,  H04L41/12 ,  H04L41/145 ,  H04L43/0852 ,  H04L43/0894 ,  H04L43/16 ,  H04L45/124 ,  H04L45/125 ,  H04L45/42 ,  H04L45/48 ,  H04W40/02 ,  H04W40/18 ,  Y02D30/20 ,  Y02D70/00 ,  Y02D70/30

Abstract: In one embodiment, a method of energy-aware routing includes modifying a reference topology of a network by removing at least a portion of a first node from the reference topology, wherein the first node is associated with a power efficiency criterion. The method also includes determining whether one or more performance criteria are satisfied based on assessing a projected response of the modified reference topology to reference traffic. The method further includes scheduling at least partial shut-down of the first node in response to determining that the one or more performance criteria are satisfied. In some implementations, the one or more performance criteria include at least one of a latency threshold, a bandwidth utilization threshold, a redundancy criterion, and a power consumption threshold. In some implementations, the first node is one of a router, a line card, an interface, or a bundle of one or more ports.

公开(公告)号：US09647944B2

公开(公告)日：2017-05-09

申请号：US15146522

申请日：2016-05-04

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Clarence Filsfils ,  Thomas F. Telkamp ,  Alan Thornton Gous

IPC: H04L1/00 ,  H04L12/803 ,  H04L12/28 ,  H04L12/46 ,  H04L12/66 ,  H04L12/759 ,  H04L12/707 ,  H04L12/813

CPC classification number: H04L47/125 ,  H04L12/2854 ,  H04L12/4633 ,  H04L12/66 ,  H04L45/028 ,  H04L45/24 ,  H04L47/122 ,  H04L47/20

Abstract: An example method for segment routing based wide area network (WAN) orchestration in a network environment is provided and includes monitoring a segment routing (SR) enabled WAN environment in at least near real-time by a path computation element (PCE) located outside the WAN, receiving an event notification at the PCE, and performing traffic engineering using SR to reroute traffic off shortest paths. In one embodiment, where a current state of the WAN is not pre-computed, performing traffic engineering comprises optimizing routes to remove violation of any utilization policies, deploying the optimized routes in the WAN, re-optimizing routes for other parameters, and further deploying the re-optimized routes in the WAN. In another embodiment, performing traffic engineering comprises optimizing routes to remove violation of any utilization policies and for other parameters, and deploying the optimized routes in the WAN. In another embodiment, performing traffic engineering comprises deploying optimized routes in the WAN.

公开(公告)号：US20170005932A1

公开(公告)日：2017-01-05

申请号：US15048192

申请日：2016-02-19

Applicant: Cisco Technology, Inc.

Inventor： Alan Thornton Gous ,  Eleni Palkopoulou

IPC: H04L12/801 ,  H04L12/26

CPC classification number: H04L43/0882 ,  H04L43/0894 ,  H04L45/125

Abstract: In one embodiment, a method includes obtaining a request to route traffic from a source to a destination in a network, where the request is associated with a setup bandwidth criterion. The method includes: identifying a plurality of candidate tunnel paths from the source to the destination; and, for each of the plurality of candidate tunnel paths, determining whether or not at least one of the candidate tunnel paths satisfies the setup bandwidth criterion. In response to determining that the plurality of candidate tunnel paths fail to satisfy the setup bandwidth criterion, the method includes: determining a congestion metric for each of a plurality of candidate tunnel paths from the source to the destination; and instantiating a tunnel from the source to the destination according to a candidate tunnel path with the lowest congestion metric.

Abstract translation: 在一个实施例中，一种方法包括获得在网络中从源到目的地路由业务的请求，其中请求与建立带宽标准相关联。 该方法包括：从源到目的地识别多个候选隧道路径; 并且对于所述多个候选隧道路径中的每一个，确定所述候选隧道路径中的至少一个是否满足所述建立带宽标准。 响应于确定多个候选隧道路径不能满足建立带宽准则，该方法包括：确定从源到目的地的多个候选隧道路径中的每一个的拥塞度量; 以及根据具有最低拥塞度量的候选隧道路径，将来自源到目的地的隧道实例化。

公开(公告)号：US09967166B2

公开(公告)日：2018-05-08

申请号：US15048192

申请日：2016-02-19

Applicant: Cisco Technology, Inc.

Inventor： Alan Thornton Gous ,  Eleni Palkopoulou

IPC: H04L12/26 ,  H04L12/729

CPC classification number: H04L43/0882 ,  H04L43/0894 ,  H04L45/125

Abstract: In one embodiment, a method includes obtaining a request to route traffic from a source to a destination in a network, where the request is associated with a setup bandwidth criterion. The method includes: identifying a plurality of candidate tunnel paths from the source to the destination; and, for each of the plurality of candidate tunnel paths, determining whether or not at least one of the candidate tunnel paths satisfies the setup bandwidth criterion. In response to determining that the plurality of candidate tunnel paths fail to satisfy the setup bandwidth criterion, the method includes: determining a congestion metric for each of a plurality of candidate tunnel paths from the source to the destination; and instantiating a tunnel from the source to the destination according to a candidate tunnel path with the lowest congestion metric.

公开(公告)号：US20160248680A1

公开(公告)日：2016-08-25

申请号：US15146522

申请日：2016-05-04

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Clarence Filsfils ,  Thomas F. Telkamp ,  Alan Thornton Gous

IPC: H04L12/803 ,  H04L12/813 ,  H04L12/46 ,  H04L12/707 ,  H04L12/66 ,  H04L12/28 ,  H04L12/759

CPC classification number: H04L47/125 ,  H04L12/2854 ,  H04L12/4633 ,  H04L12/66 ,  H04L45/028 ,  H04L45/24 ,  H04L47/122 ,  H04L47/20

Abstract: An example method for segment routing based wide area network (WAN) orchestration in a network environment is provided and includes monitoring a segment routing (SR) enabled WAN environment in at least near real-time by a path computation element (PCE) located outside the WAN, receiving an event notification at the PCE, and performing traffic engineering using SR to reroute traffic off shortest paths. In one embodiment, where a current state of the WAN is not pre-computed, performing traffic engineering comprises optimizing routes to remove violation of any utilization policies, deploying the optimized routes in the WAN, re-optimizing routes for other parameters, and further deploying the re-optimized routes in the WAN. In another embodiment, performing traffic engineering comprises optimizing routes to remove violation of any utilization policies and for other parameters, and deploying the optimized routes in the WAN. In another embodiment, performing traffic engineering comprises deploying optimized routes in the WAN.