公开(公告)号：US09503363B2

公开(公告)日：2016-11-22

申请号：US14659220

申请日：2015-03-16

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Muthurajah Sivabalan ,  Sami Boutros ,  Clarence Filsfils ,  Rex Emmanuel Fernando ,  Lakshmi Sharma ,  Santiago Vazquez Freitas ,  Bruce McDougall ,  Robert Keith Fielding

IPC: H04L12/28 ,  H04L12/723 ,  H04L12/911 ,  H04L29/12

CPC classification number: H04L45/50 ,  H04L47/825 ,  H04L61/2007

Abstract: A method is provided in one example embodiment and includes receiving a request to create a path through a network, wherein the path originates on a first network device and terminates on the second network device; identifying a first controller associated with the first network device, wherein the first controller proxies control plane functions for the first network device; identifying a second controller associated with the second network device, wherein the second controller proxies control plane functions for the second network device; and computing the path using the first controller as a source and the second controller as a destination. The first controller installs the computed path on the first network device and the second controller installs the computed path on the second network device.

Abstract translation: 在一个示例性实施例中提供了一种方法，并且包括接收通过网络创建路径的请求，其中所述路径起始于第一网络设备并终止于所述第二网络设备上; 识别与所述第一网络设备相关联的第一控制器，其中所述第一控制器代理所述第一网络设备的控制平面功能; 识别与所述第二网络设备相关联的第二控制器，其中所述第二控制器代理所述第二网络设备的控制平面功能; 以及使用第一控制器作为源并且将第二控制器作为目的地来计算路径。 第一个控制器在第一个网络设备上安装计算的路径，第二个控制器将计算的路径安装在第二个网络设备上。

公开(公告)号：US09444712B2

公开(公告)日：2016-09-13

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 ,  H04L12/24

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。

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.

公开(公告)号：US20150249591A1

公开(公告)日：2015-09-03

申请号：US14304439

申请日：2014-06-13

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, 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：US20130148489A1

公开(公告)日：2013-06-13

申请号：US13760854

申请日：2013-02-06

Applicant: Cisco Technology, Inc.

Inventor： Sami Boutros ,  Muthurajah Sivabalan ,  David D. Ward ,  George Swallow ,  Stewart Frederick Bryant ,  Ian Michael Charles Shand

IPC: H04L12/24

CPC classification number: H04L12/2419 ,  H04L41/06 ,  H04L43/0811 ,  H04L45/26 ,  H04L45/28 ,  H04L45/50 ,  H04L47/10

Abstract: In one embodiment, a maintenance intermediate point (MIP) receives a packet traveling along a multi-protocol label switching (MPLS) label switched path (LSP) that extends from a first maintenance end point (MEP) to a second MEP. The receiving MIP decrements a time-to-live (TTL) value in a header of the packet. In response the TTL value in the header of the packet equaling a particular value, the receiving MIP examines an associated channel header (ACH) field in an operations, administration, and maintenance (OAM) message stored in a payload of the packet, and determines a particular OAM function to perform based on a code in the ACH field. The receiving MIP performs the particular OAM function.

Abstract translation: 在一个实施例中，维护中间点（MIP）接收沿着从第一维护终点（MEP）延伸到第二MEP的多协议标签交换（MPLS）标签交换路径（LSP）行进的分组。 接收MIP减少分组报头中的生存时间（TTL）值。 响应于等于特定值的分组的报头中的TTL值，接收MIP检查存储在分组的有效载荷中的操作，管理和维护（OAM）消息中的相关联的信道报头（ACH）字段，并且确定 基于ACH字段中的代码执行的特定OAM功能。 接收MIP执行特定的OAM功能。