公开(公告)号：USRE48131E1

公开(公告)日：2020-07-28

申请号：US15630859

申请日：2017-06-22

Applicant: CISCO TECHNOLOGY, INC.

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

IPC: H04L12/851 ,  H04L12/741 ,  H04L29/06 ,  H04L12/801

Abstract: A method for augmenting metadata of a network service header is disclosed. The method includes receiving, at a first service node, a packet or frame of a traffic flow, wherein the packet has a payload and the network service header including a first metadata and a first service path information for the traffic flow, classifying, by the first service node, at least one of the payload and the first metadata to generate a second metadata different from the first metadata, and augmenting, by the first service node, the first metadata using the second metadata before forwarding the packet or frame to a second service node.

公开(公告)号：US10708178B2

公开(公告)日：2020-07-07

申请号：US16170175

申请日：2018-10-25

Applicant: Cisco Technology, Inc.

Inventor： Reinaldo Penno ,  Carlos M. Pignataro ,  Paul Quinn ,  Hung The Chau ,  Chui-Tin Yen ,  Vivek Kansal ,  Jianxin Wang ,  Kent K. Leung

IPC: H04L12/721 ,  H04L12/801 ,  H04L12/715 ,  H04L12/703 ,  H04L12/911 ,  H04L12/851

Abstract: Embodiments are directed to receiving an original packet at a service function; determining, for a reverse packet, a reverse service path identifier for a previous hop on a service function chain; determining, for the reverse packet, a service index for the reverse service path identifier; and transmitting the reverse packet to the previous hop on the service function chain.

公开(公告)号：US20190158398A1

公开(公告)日：2019-05-23

申请号：US16252036

申请日：2019-01-18

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/715 ,  H04L12/46

CPC classification number: H04L45/64 ,  H04L12/4633 ,  H04L12/4641

Abstract: An apparatus having logic elements to receive an incoming packet associated with a first service function chain; identify a next hop service function for the incoming packet as a non-reactive service function; create a duplicate packet; forward the duplicate packet to the non-reactive service function; and forward the incoming packet to a next reactive service function. An apparatus having logic to receive an incoming packet associated with a first service function chain (SFC), having a first service path identifier (SPI); determine that the incoming packet has a first service index (SI), and that a next-hop SI identifies a non-reactive service function (NRSF); receive a duplicate packet of the incoming packet; rewrite a service header of the duplicate packet to identify a second SFC having a second SPI; and alter the first SI of the incoming packet to identify a next reactive service function in the first SFC.

公开(公告)号：US10270843B2

公开(公告)日：2019-04-23

申请号：US15711235

申请日：2017-09-21

Applicant: Cisco Technology, Inc.

Inventor： Hendrikus G. P. Bosch ,  James Guichard ,  Dave Barach ,  Alessandro Duminuco ,  Luyuan Fang ,  Paul Quinn ,  Rex Fernando ,  David Ward

IPC: H04L29/08 ,  H04L12/715 ,  H04L12/751

Abstract: Presented herein are techniques for use in a network environment that includes one or more service zones, each service zone including at least one instance of an in-line application service to be applied to network traffic and one or more routers to direct network traffic to the at least one service, and a route target being assigned to a unique service zone to serve as a community value for route import and export between routers of other service zones, destination networks or source networks via a control protocol. An edge router in each service zone or destination network advertises routes by its destination network prefix tagged with its route target. A service chain is created by importing and exporting of destination network prefixes by way of route targets at edge routers of the service zones or source networks.

公开(公告)号：US10171350B2

公开(公告)日：2019-01-01

申请号：US15160804

申请日：2016-05-20

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Reinaldo Penno ,  Carlos M. Pignataro ,  Paul Quinn ,  Hung The Chau ,  Chui-Tin Yen ,  Vivek Kansal ,  Jianxin Wang ,  Kent K. Leung

IPC: H04L12/721 ,  H04L12/703 ,  H04L12/911 ,  H04L12/801 ,  H04L12/715 ,  H04L12/851

Abstract: Embodiments are directed to receiving an original packet at a service function; determining, for a reverse packet, a reverse service path identifier for a previous hop on a service function chain; determining, for the reverse packet, a service index for the reverse service path identifier; and transmitting the reverse packet to the previous hop on the service function chain.

公开(公告)号：US10164875B2

公开(公告)日：2018-12-25

申请号：US15049521

申请日：2016-02-22

Applicant: Cisco Technology, Inc.

Inventor： James N. Guichard ,  Paul Quinn ,  Carlos M. Pignataro ,  Nagendra Kumar Nainar ,  Rajiv Asati

IPC: H04L12/723 ,  H04L12/741 ,  H04L12/725

Abstract: In one embodiment, a device in a network receives a packet that includes one or more forwarding labels and a service function chaining (SFC) header. The device removes the one or more forwarding labels from the packet. The device inserts an indication of the one or more forwarding labels into metadata of the SFC header. The device forwards the packet with the inserted indication of the one or more forwarding labels to a service function.

公开(公告)号：US10104050B2

公开(公告)日：2018-10-16

申请号：US15146695

申请日：2016-05-04

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Warren Scott Wainner ,  Brian E. Weis ,  Paul Quinn ,  Scott Roy Fluhrer

IPC: H04L29/06

Abstract: A method is provided in one example embodiment and includes receiving at a node of a transitive IP network a data packet including a Network Services Header (“NSH”); accessing by the transitive IP network node context contained in the NSH, wherein the context may be used by the transitive IP network node to perform an enhanced network service in connection with the received data packet; performing by the transitive IP network node the enhanced network service in connection with the received data packet using the accessed context; and, subsequent to the performing, forwarding the received packet to a next node.

公开(公告)号：US20180131590A1

公开(公告)日：2018-05-10

申请号：US15868779

申请日：2018-01-11

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Reinaldo Penno ,  Paul Quinn ,  Carlos M. Pignataro

IPC: H04L12/26 ,  H04L29/12

CPC classification number: H04L43/10 ,  H04L43/04 ,  H04L61/251 ,  H04L61/256 ,  H04L61/6004 ,  H04L61/6059

Abstract: In one embodiment, a method includes receiving a trace request packet at a service node in a service chain, the trace request packet comprising a service path identifier, a service index, and a service index limit, processing the trace request packet at the service node, comparing the service index to the service index limit, determining that the service index is greater than the service index limit, generating a trace response packet at the service node indicating that the service index is greater than the service index limit, and transmitting the trace response packet. The trace response packet comprises service function information for each of a plurality of service nodes in the service chain. An apparatus is also disclosed herein.

公开(公告)号：US20170324714A1

公开(公告)日：2017-11-09

申请号：US15146695

申请日：2016-05-04

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Warren Scott Wainner ,  Brian E. Weis ,  Paul Quinn ,  Scott Roy Fluhrer

IPC: H04L29/06

CPC classification number: H04L63/0272 ,  H04L63/0892 ,  H04L63/104

Abstract: A method is provided in one example embodiment and includes receiving at a node of a transitive IP network a data packet including a Network Services Header (“NSH”); accessing by the transitive IP network node context contained in the NSH, wherein the context may be used by the transitive IP network node to perform an enhanced network service in connection with the received data packet; performing by the transitive IP network node the enhanced network service in connection with the received data packet using the accessed context; and, subsequent to the performing, forwarding the received packet to a next node.

公开(公告)号：US09755959B2

公开(公告)日：2017-09-05

申请号：US13944050

申请日：2013-07-17

Applicant: Cisco Technology, Inc.

Inventor： James Guichard ,  Paul Quinn ,  Surendra Kumar ,  Govind P. Sharma ,  Abhijit Patra

IPC: G06F15/173 ,  H04L12/725 ,  H04L29/08

CPC classification number: H04L45/30 ,  H04L67/16 ,  H04L67/18

Abstract: Presented herein are techniques for dynamic creation of a unique service path for a service chain. In one example, a service controller and a plurality of service nodes are provided, each service node configured to apply a service function to traffic that passes through the respective service node. The service controller defines a service chain identifying a set of service functions and an order in which they are applied. The service controller receives an indication that the service chain has been instantiated at a classifier, and creates a unique service path for the service chain, wherein the unique service path includes the service chain and the classifier at which the service chain is instantiated.