公开(公告)号：US20150124606A1

公开(公告)日：2015-05-07

申请号：US14070462

申请日：2013-11-01

Applicant: Cisco Technology, Inc.

Inventor： Santiago Alvarez ,  Sami Boutros

IPC: H04W40/02 ,  H04L12/715 ,  H04W28/08

CPC classification number: H04W28/085 ,  H04L45/46

Abstract: Routing packet traffic using hierarchical forwarding groups is disclosed. In an embodiment, a packet is received at a packet router. Data related to the packet is received at a first forwarding group. Based on a first forwarding policy associated with the first forwarding group, a particular second forwarding group is selected from a set of forwarding groups that are members of the first forwarding group. Each forwarding group of the set of forwarding groups that are members of the first forwarding group is associated with a unique set of paths. Data related to the packet is provided to the particular second forwarding group. Based on a second forwarding policy associated with the particular second forwarding group, a particular path is selected from a set of paths that are associated with the particular second forwarding group. The packet is forwarded to a network node via the particular path.

Abstract translation: 公开了使用分层转发组来路由分组流量。 在一个实施例中，在分组路由器处接收分组。 与第一转发组接收到与分组相关的数据。 基于与第一转发组相关联的第一转发策略，从作为第一转发组的成员的一组转发组中选择特定的第二转发组。 作为第一转发组的成员的转发组集合中的每个转发组与唯一的一组路径相关联。 与该分组相关的数据被提供给特定的第二转发组。 基于与特定第二转发组相关联的第二转发策略，从与特定第二转发组相关联的一组路径中选择特定路径。 该分组经由特定路径被转发到网络节点。

公开(公告)号：US20220329489A1

公开(公告)日：2022-10-13

申请号：US17224769

申请日：2021-04-07

Applicant: Cisco Technology, Inc.

Inventor： Munish Nayyar ,  Benoit Claise ,  Adithya Reddy Sesani ,  Santiago Alvarez

IPC: H04L12/24 ,  G06F16/904

Abstract: A network device is provisioned with a first data model of a first type and that models first properties for the network device, a second data model of a second type and that models second properties for the network device, and mappings that indicate mapped first properties among the first properties that are mapped to mapped second properties of the second properties. Upon receiving a request from a network for data for the first data model, the network device retrieves first data for the first properties of the first data model. The network device determines, based on the mappings, unmapped second properties of the second properties that are not mapped to any of the first properties. The network device retrieves, as dynamically augmented data, data for the unmapped second properties. The network device sends a request response including the first data and the dynamically augmented data.

公开(公告)号：US09647929B2

公开(公告)日：2017-05-09

申请号：US14309338

申请日：2014-06-19

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Santiago Alvarez ,  Muthurajah Sivabalan

IPC: H04L12/721 ,  H04L12/24 ,  H04L12/913 ,  H04L12/26

CPC classification number: H04L45/123 ,  H04L41/0803 ,  H04L43/062 ,  H04L45/124 ,  H04L45/30 ,  H04L47/724

Abstract: Methods and systems are disclosed for enabling centralized path definition and policy with distributed path setup, and centralized path setup control with distributed path utilization constraints. In one example, a path computation client (PCC) requests, utilizing opaque PCE profile identifiers, path computation from a path computation element (PCE). The PCE profile identifier corresponds to path computation constraints, stored local to PCE, and are unknown to the PCC. Advantageously, the PCE profile identifiers allow the PCC to initiate path computation requests based on information local the PCC while leveraging centralized computation by the PCE. In another example, a PCE requests, utilizing opaque PCC profile identifiers, that a PCC initiate a path. The PCC profile identifier corresponds to path usage constraints, stored local to PCC, and are unknown to the PCE. Advantageously, the PCC identifiers allow the PCE to marshal path initiation while leveraging distributed resources to enforce compliance with usage parameters.

公开(公告)号：US20150249593A1

公开(公告)日：2015-09-03

申请号：US14309425

申请日：2014-06-19

Applicant: Cisco Technology, Inc.

Inventor： Santiago Alvarez ,  Muthurajah Sivabalan

IPC: H04L12/721

CPC classification number: H04L45/123 ,  H04L41/0803 ,  H04L43/062 ,  H04L45/124 ,  H04L45/30 ,  H04L47/724

Abstract: Methods and systems are disclosed for enabling centralized path definition and policy with distributed path setup, and centralized path setup control with distributed path utilization constraints. In one example, a path computation client (PCC) requests, utilizing opaque PCE profile identifiers, path computation from a path computation element (PCE). The PCE profile identifier corresponds to path computation constraints, stored local to PCE, and are unknown to the PCC. Advantageously, the PCE profile identifiers allow the PCC to initiate path computation requests based on information local the PCC while leveraging centralized computation by the PCE. In another example, a PCE requests, utilizing opaque PCC profile identifiers, that a PCC initiate a path. The PCC profile identifier corresponds to path usage constraints, stored local to PCC, and are unknown to the PCE. Advantageously, the PCC identifiers allow the PCE to marshal path initiation while leveraging distributed resources to enforce compliance with usage parameters.

Abstract translation: 公开了用于实现具有分布式路径建立的集中路径定义和策略以及具有分布式路径利用约束的集中路径设置控制的方法和系统。 在一个示例中，路径计算客户端（PCC）使用不透明PCE简档标识符从路径计算元件（PCE）请求路径计算。 PCE配置文件标识符对应于PCE本地存储的路径计算约束，并且对于PCC是未知的。 有利地，PCE简档标识符允许PCC基于PCC本地的信息来发起路径计算请求，同时利用PCE的集中式计算。 在另一示例中，PCE使用不透明的PCC简档标识符来请求PCC发起路径。 PCC配置文件标识符对应于PCC本地存储的路径使用约束，并且PCE是未知的。 有利地，PCC标识符允许PCE调度路径启动，同时利用分布式资源来强制遵守使用参数。

公开(公告)号：US11502911B2

公开(公告)日：2022-11-15

申请号：US17224769

申请日：2021-04-07

Applicant: Cisco Technology, Inc.

Inventor： Munish Nayyar ,  Benoit Claise ,  Adithya Reddy Sesani ,  Santiago Alvarez

IPC: H04L12/00 ,  H04L41/0893 ,  G06F16/904 ,  H04L41/12

Abstract: A network device is provisioned with a first data model of a first type and that models first properties for the network device, a second data model of a second type and that models second properties for the network device, and mappings that indicate mapped first properties among the first properties that are mapped to mapped second properties of the second properties. Upon receiving a request from a network for data for the first data model, the network device retrieves first data for the first properties of the first data model. The network device determines, based on the mappings, unmapped second properties of the second properties that are not mapped to any of the first properties. The network device retrieves, as dynamically augmented data, data for the unmapped second properties. The network device sends a request response including the first data and the dynamically augmented data.

公开(公告)号：US09838299B2

公开(公告)日：2017-12-05

申请号：US14309425

申请日：2014-06-19

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Santiago Alvarez ,  Muthurajah Sivabalan

IPC: H04L12/721 ,  H04L12/24 ,  H04L12/725 ,  H04L12/913 ,  H04L12/26

CPC classification number: H04L45/123 ,  H04L41/0803 ,  H04L43/062 ,  H04L45/124 ,  H04L45/30 ,  H04L47/724

Abstract: Methods and systems are disclosed for enabling centralized path definition and policy with distributed path setup, and centralized path setup control with distributed path utilization constraints. In one example, a path computation client (PCC) requests, utilizing opaque PCE profile identifiers, path computation from a path computation element (PCE). The PCE profile identifier corresponds to path computation constraints, stored local to PCE, and are unknown to the PCC. Advantageously, the PCE profile identifiers allow the PCC to initiate path computation requests based on information local the PCC while leveraging centralized computation by the PCE. In another example, a PCE requests, utilizing opaque PCC profile identifiers, that a PCC initiate a path. The PCC profile identifier corresponds to path usage constraints, stored local to PCC, and are unknown to the PCE. Advantageously, the PCC identifiers allow the PCE to marshal path initiation while leveraging distributed resources to enforce compliance with usage parameters.

公开(公告)号：US09538423B2

公开(公告)日：2017-01-03

申请号：US14070462

申请日：2013-11-01

Applicant: Cisco Technology, Inc.

Inventor： Santiago Alvarez ,  Sami Boutros

IPC: H04L12/801 ,  H04W28/08 ,  H04L12/715

CPC classification number: H04W28/085 ,  H04L45/46

Abstract: Routing packet traffic using hierarchical forwarding groups is disclosed. In an embodiment, a packet is received at a packet router. Data related to the packet is received at a first forwarding group. Based on a first forwarding policy associated with the first forwarding group, a particular second forwarding group is selected from a set of forwarding groups that are members of the first forwarding group. Each forwarding group of the set of forwarding groups that are members of the first forwarding group is associated with a unique set of paths. Data related to the packet is provided to the particular second forwarding group. Based on a second forwarding policy associated with the particular second forwarding group, a particular path is selected from a set of paths that are associated with the particular second forwarding group. The packet is forwarded to a network node via the particular path.

Abstract translation: 公开了使用分层转发组来路由分组流量。 在一个实施例中，在分组路由器处接收分组。 与第一转发组接收到与分组相关的数据。 基于与第一转发组相关联的第一转发策略，从作为第一转发组的成员的一组转发组中选择特定的第二转发组。 作为第一转发组的成员的转发组集合中的每个转发组与唯一的一组路径相关联。 与分组相关的数据被提供给特定的第二转发组。 基于与特定第二转发组相关联的第二转发策略，从与特定第二转发组相关联的一组路径中选择特定路径。 该分组经由特定路径被转发到网络节点。

公开(公告)号：US09537753B2

公开(公告)日：2017-01-03

申请号：US14304439

申请日：2014-06-13

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Santiago Alvarez ,  Muthurajah Sivabalan

IPC: H04L12/721 ,  H04L12/24 ,  H04L12/913 ,  H04L12/26

CPC classification number: H04L45/123 ,  H04L41/0803 ,  H04L43/062 ,  H04L45/124 ,  H04L45/30 ,  H04L47/724

Abstract: Methods and systems are disclosed for enabling centralized path definition and policy with distributed path setup, and centralized path setup control with distributed path utilization constraints. In one example, a path computation client (PCC) requests, utilizing opaque PCE profile identifiers, a path computation from a path computation element (PCE). The PCE profile identifier corresponds to path computation constraints, stored local to PCE, and are unknown to the PCC. Advantageously, the PCE profile identifiers allow the PCC to initiate path computation requests based on information local the PCC while leveraging centralized path computation by the PCE. In another example, a PCE requests, utilizing opaque PCC profile identifiers, that a PCC initiate a path. The PCC profile identifier corresponds to path usage parameter constraints, stored local to PCC, and are unknown to the PCE. Advantageously, the PCC identifiers allow the PCE to marshal path initiation while leveraging distributed resources to enforce compliance with usage parameters.

Abstract translation: 公开了用于实现具有分布式路径建立的集中路径定义和策略以及具有分布式路径利用约束的集中路径设置控制的方法和系统。 在一个示例中，路径计算客户端（PCC）使用不透明PCE简档标识符从路径计算元件（PCE）请求路径计算。 PCE配置文件标识符对应于PCE本地存储的路径计算约束，并且对于PCC是未知的。 有利地，PCE简档标识符允许PCC基于PCC本地的信息来发起路径计算请求，同时利用PCE的集中路径计算。 在另一示例中，PCE使用不透明的PCC简档标识符来请求PCC发起路径。 PCC配置文件标识符对应于PCC本地存储的路径使用参数约束，并且对于PCE是未知的。 有利地，PCC标识符允许PCE调度路径启动，同时利用分布式资源来强制遵守使用参数。

公开(公告)号：US09531627B1

公开(公告)日：2016-12-27

申请号：US14155769

申请日：2014-01-15

Applicant: Cisco Technology, Inc.

Inventor： Santiago Alvarez ,  Sami Boutros ,  Syed Kamran Raza

IPC: H04L12/723

CPC classification number: H04L45/507

Abstract: Selecting remote path using forwarding path preferences is disclosed. In an embodiment, a message of a first network node identifying one or more forwarding path preferences in association with one or more destination addresses is received at a packet router. A particular path corresponding to a particular forwarding path preference from among the one or more forwarding path preferences received in the message is determined and in response a particular label is determined. A forwarding entry associating the particular label with the particular forwarding path preference and the particular path is stored. The particular label is forwarded to a second network node. A packet including the particular label is received at the packet router and the particular path associated with the particular label included with the packet is selected based on the forwarding entry associated with the label. The packet is forwarded to a network node via the selected path.

Abstract translation: 公开了使用转发路径首选项选择远程路径。 在一个实施例中，在分组路由器处接收到与一个或多个目的地地址相关联地标识一个或多个转发路径偏好的第一网络节点的消息。 确定与在消息中接收到的一个或多个转发路径偏好中的特定转发路径偏好相对应的特定路径，并且响应于确定特定标签。 存储将特定标签与特定转发路径偏好和特定路径相关联的转发条目。 特定的标签被转发到第二个网络节点。 在分组路由器处接收到包含特定标签的分组，并且基于与标签相关联的转发条目来选择与分组所包含的特定标签相关联的特定路径。 分组通过所选路径转发到网络节点。

公开(公告)号：US20150249592A1

公开(公告)日：2015-09-03

申请号：US14309338

申请日：2014-06-19

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Santiago Alvarez ,  Muthurajah Sivabalan

IPC: H04L12/721 ,  H04L12/26

CPC classification number: H04L45/123 ,  H04L41/0803 ,  H04L43/062 ,  H04L45/124 ,  H04L45/30 ,  H04L47/724

Abstract: Methods and systems are disclosed for enabling centralized path definition and policy with distributed path setup, and centralized path setup control with distributed path utilization constraints. In one example, a path computation client (PCC) requests, utilizing opaque PCE profile identifiers, path computation from a path computation element (PCE). The PCE profile identifier corresponds to path computation constraints, stored local to PCE, and are unknown to the PCC. Advantageously, the PCE profile identifiers allow the PCC to initiate path computation requests based on information local the PCC while leveraging centralized computation by the PCE. In another example, a PCE requests, utilizing opaque PCC profile identifiers, that a PCC initiate a path. The PCC profile identifier corresponds to path usage constraints, stored local to PCC, and are unknown to the PCE. Advantageously, the PCC identifiers allow the PCE to marshal path initiation while leveraging distributed resources to enforce compliance with usage parameters.