公开(公告)号：US20150334027A1

公开(公告)日：2015-11-19

申请号：US14285843

申请日：2014-05-23

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Hendrikus G. P. Bosch ,  Ian McDowell Campbell ,  Humberto J. La Roche ,  James N. Guichard ,  Surendra M. Kumar ,  Paul Quinn ,  Alessandro Duminuco ,  Jeffrey Napper ,  Ravi Shekhar

IPC: H04L12/851 ,  H04W72/04 ,  H04L12/801

CPC classification number: H04L47/2408 ,  H04L45/38 ,  H04L47/12 ,  H04L47/14 ,  H04W72/0493 ,  H04W88/16

Abstract: An example method is provided in one example embodiment and may include receiving a packet for a subscriber at a gateway, wherein the gateway includes a local policy anchor for interfacing with one or more policy servers and one or more classifiers for interfacing with one or more service chains, each service chain including one or more services accessible by the gateway; determining a service chain to receive the subscriber's packet; appending the subscriber's packet with a header, wherein the header includes, at least in part, identification information for the subscriber and an Internet Protocol (IP) address for the local policy anchor; and injecting the packet including the header into the service chain determined for the subscriber.

公开(公告)号：US20150103827A1

公开(公告)日：2015-04-16

申请号：US14052968

申请日：2013-10-14

Applicant: Cisco Technology, Inc.

Inventor： Paul Quinn ,  James Guichard ,  Surendra Kumar

IPC: H04L12/741 ,  H04L12/931

CPC classification number: H04L45/74 ,  H04L45/306 ,  H04L49/354 ,  H04L49/70 ,  H04L67/327

Abstract: Presented herein are techniques in which a service proxy in a service node is configured to receive a packet encapsulated in a service header that includes a variable set of context headers. The service proxy is configured to use the context headers in the service header to map data in the packet to a local identifier that is associated with one of a plurality of service-functions hosted by the service node. The service proxy is further configured to forward the data in the packet to the service-function associated with the local identifier.

Abstract translation: 这里呈现的是其中服务节点中的服务代理被配置为接收封装在包括可变集上下文头部的服务头部中的分组的技术。 服务代理被配置为使用服务头部中的上下文头部将分组中的数据映射到与由服务节点托管的多个服务功能中的一个相关联的本地标识符。 服务代理还被配置为将分组中的数据转发到与本地标识符相关联的服务功能。

公开(公告)号：US20140334488A1

公开(公告)日：2014-11-13

申请号：US13891245

申请日：2013-05-10

Applicant: CISCO TECHNOLOGY, INC.

Inventor： James Guichard ,  Paul Quinn ,  David Ward ,  Surendra Kumar ,  Navindra Yadav ,  Michael R. Smith ,  Nagaraj A. Bagepalli

IPC: H04L12/851

CPC classification number: H04L45/306 ,  H04L41/0893 ,  H04L47/2441 ,  H04L69/22

Abstract: Techniques are provided to decouple service chain structure from the underlying network forwarding state and allow for data plane learning of service chain forwarding requirements and any association between services function state requirements and the forward and reverse forwarding paths for a service chain. In a network comprising a plurality of network nodes each configured to apply a service function to traffic that passes through the respective network node, a packet is received at a network node. When the network node determines that the service function it applies is stateful, it updates context information in a network service header of the packet to indicate that the service function applied at the network node is stateful and that traffic for a reverse path matching the classification criteria is to be returned to the network node.

Abstract translation: 提供了技术来将服务链结构与底层网络转发状态分离，并允许服务链转发要求的数据平面学习和服务功能状态要求与服务链的前向和后向转发路径之间的任何关联。 在包括多个网络节点的网络中，每个网络节点被配置为对通过相应网络节点的业务应用服务功能，在网络节点处接收分组。 当网络节点确定其应用的服务功能是有状态时，它更新分组的网络服务报头中的上下文信息，以指示在网络节点处应用的服务功能是有状态的，并且用于与分类标准匹配的反向路径的业务 将被返回到网络节点。