公开(公告)号：US20160134481A1

公开(公告)日：2016-05-12

申请号：US14587981

申请日：2014-12-31

Applicant: Cisco Technology, Inc.

Inventor： Nobushige Akiya ,  Carlos M. Pignataro ,  Nagendra Kumar Nainar ,  Paul Quinn ,  James Guichard

IPC: H04L12/24

CPC classification number: H04L41/5058 ,  H04L41/5038

Abstract: In one embodiment, a system and method are disclosed for sending a request and receiving a reply. The request contains a network service header including a flow label field and a target index field. The flow label field contains a set of available flow labels. The target index field includes a value indicating a target node. The reply contains information indicating which of the flow labels can be used to route a packet to each of the next hop nodes downstream from the device that sent the reply. This process can be repeated for other nodes on a path, and other paths in a service topology layer. The information determined by this process can be used to perform other necessary functionalities at the service topology layer.

Abstract translation: 在一个实施例中，公开了用于发送请求并接收回复的系统和方法。 请求包含包括流标签字段和目标索引字段的网​​络服务头。 流标签字段包含一组可用流标签。 目标索引字段包括指示目标节点的值。 答复包含指示哪些流标签可以用于将分组路由到发送回复的设备下游的下一跳节点的信息。 可以对路径上的其他节点以及服务拓扑层中的其他路径重复此过程。 该过程确定的信息可用于在服务拓扑层执行其他必要的功能。

公开(公告)号：US20160099864A1

公开(公告)日：2016-04-07

申请号：US14508570

申请日：2014-10-07

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Nobushige Akiya ,  Nagendra Kumar Nainar ,  Carlos M. Pignataro

IPC: H04L12/703 ,  H04L12/741 ,  H04L12/823 ,  H04L12/24 ,  H04L12/723

CPC classification number: H04L45/28 ,  H04L45/50 ,  H04L45/74 ,  H04L47/24 ,  H04L47/32

Abstract: In one embodiment, a method includes identifying a failure of a service function at a service node in a service chain, receiving a packet at the service node, and processing the packet at the service node according to a flag associated with the service function and set based on a criticality of the service function. An apparatus is also disclosed herein.

Abstract translation: 在一个实施例中，一种方法包括识别服务链中的服务节点处的服务功能的故障，在服务节点处接收分组，以及根据与服务功能相关联的标志处理服务节点处的分组，并设置 基于服务功能的关键性。 本文还公开了一种装置。

公开(公告)号：US20150381444A1

公开(公告)日：2015-12-31

申请号：US14315570

申请日：2014-06-26

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Nagendra Kumar Nainar ,  Carlos M. Pignataro ,  Nobushige Akiya

IPC: H04L12/26

CPC classification number: H04L43/0811 ,  H04L43/10

Abstract: In one embodiment, a method includes generating a path validation packet at a network device, the path validation packet including a plurality of segment identifiers for use in segment routing and an operations, administration, and management (OAM) segment identifier for use in path validation, transmitting from the network device the path validation packet on a path having a plurality of routers associated with the segment identifiers, one of the routers associated with the OAM segment identifier, and validating the path if a return path validation packet is received. An apparatus is also disclosed herein.

Abstract translation: 在一个实施例中，一种方法包括在网络设备处生成路径验证分组，所述路径验证分组包括用于分段路由的多个分段标识符以及用于路径验证的操作，管理和管理（OAM）段标识符 从网络设备发送具有与段标识符相关联的多个路由器的路径上的路径验证分组，与OAM分段标识符相关联的路由器之一，以及如果接收到返回路径验证分组则验证该路径。 本文还公开了一种装置。