公开(公告)号：US20160182385A1

公开(公告)日：2016-06-23

申请号：US15055691

申请日：2016-02-29

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Surendra M. Kumar ,  Nagaraj A. Bagepalli ,  Dileep K. Devireddy ,  Abhijit Patra

IPC: H04L12/859 ,  H04L12/801

CPC classification number: H04L47/2475 ,  H04L12/56 ,  H04L43/026 ,  H04L45/12 ,  H04L45/38 ,  H04L45/48 ,  H04L45/64 ,  H04L47/12 ,  H04L47/17

Abstract: A method is provided in one example embodiment and includes receiving at a network element a flow offload decision for a first service node that includes a portion of a service chain for processing a flow; recording the flow offload decision against the first service node at the network element; and propagating the flow offload decision backward on a service path to which the flow belongs if the first service node is hosted at the network element. Embodiments may also include propagating the flow offload decision backward on a service path to which the flow belongs if the flow offload decision is a propagated flow offload decision and the network element hosts a second service node that immediately precedes the service node on behalf of which the propagated flow offload decision was received and a flow offload decision has already been received by the network element from the second service node.

Abstract translation: 在一个示例实施例中提供了一种方法，并且包括在网络元件处接收包括用于处理流的服务链的一部分的第一服务节点的流卸载决定; 记录网元上的第一服务节点的流量卸载决定; 并且如果第一服务节点驻留在网络元件处，则在流所属的服务路径上向后传播流卸载决策。 实施例还可以包括：如果流卸载决定是传播的流卸载决定，并且网络主机驻留在服务节点之前的第二服务节点，则在流所属的服务路径上向后传播流卸载决策， 接收到传播流卸载决定，网元从第二服务节点已经接收到流卸载决定。

公开(公告)号：US20150138973A1

公开(公告)日：2015-05-21

申请号：US14081772

申请日：2013-11-15

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Surendra M. Kumar ,  Nagaraj A. Bagepalli ,  Dileep K. Devireddy ,  Abhijit Patra

IPC: H04L12/801 ,  H04L12/721

CPC classification number: H04L47/2475 ,  H04L12/56 ,  H04L43/026 ,  H04L45/12 ,  H04L45/38 ,  H04L45/48 ,  H04L45/64 ,  H04L47/12 ,  H04L47/17

Abstract: A method is provided in one example embodiment and includes receiving at a network element a flow offload decision for a first service node comprising a portion of a service chain for processing a flow; recording the flow offload decision against the first service node at the network element; and propagating the flow offload decision backward on a service path to which the flow belongs if the first service node is hosted at the network element. Embodiments may also include propagating the flow offload decision backward on a service path to which the flow belongs if the flow offload decision is a propagated flow offload decision and the network element hosts a second service node that immediately precedes the service node on behalf of which the propagated flow offload decision was received and a flow offload decision has already been received by the network element from the second service node.

Abstract translation: 在一个示例实施例中提供了一种方法，并且包括在网络元件处接收包括用于处理流的服务链的一部分的第一服务节点的流卸载决定; 记录网元上的第一服务节点的流量卸载决定; 并且如果第一服务节点驻留在网络元件处，则在流所属的服务路径上向后传播流卸载决策。 实施例还可以包括：如果流卸载决定是传播的流卸载决定，并且网络主机驻留在服务节点之前的第二服务节点，则在流所属的服务路径上向后传播流卸载决策， 接收到传播流卸载决定，网元从第二服务节点已经接收到流卸载决定。

公开(公告)号：US09300585B2

公开(公告)日：2016-03-29

申请号：US14081772

申请日：2013-11-15

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Surendra M. Kumar ,  Nagaraj A. Bagepalli ,  Dileep K. Devireddy ,  Abhijit Patra

IPC: H04L12/801 ,  H04L12/721 ,  H04L12/54 ,  H04L12/26 ,  H04L12/753 ,  H04L12/715

CPC classification number: H04L47/2475 ,  H04L12/56 ,  H04L43/026 ,  H04L45/12 ,  H04L45/38 ,  H04L45/48 ,  H04L45/64 ,  H04L47/12 ,  H04L47/17

Abstract: A method is provided in one example embodiment and includes receiving at a network element a flow offload decision for a first service node that includes a portion of a service chain for processing a flow; recording the flow offload decision against the first service node at the network element; and propagating the flow offload decision backward on a service path to which the flow belongs if the first service node is hosted at the network element. Embodiments may also include propagating the flow offload decision backward on a service path to which the flow belongs if the flow offload decision is a propagated flow offload decision and the network element hosts a second service node that immediately precedes the service node on behalf of which the propagated flow offload decision was received and a flow offload decision has already been received by the network element from the second service node.

Abstract translation: 在一个示例实施例中提供了一种方法，并且包括在网络元件处接收包括用于处理流的服务链的一部分的第一服务节点的流卸载决定; 记录网元上的第一服务节点的流量卸载决定; 并且如果第一服务节点驻留在网络元件处，则在流所属的服务路径上向后传播流卸载决策。 实施例还可以包括：如果流卸载决定是传播的流卸载决定，并且网络主机驻留在服务节点之前的第二服务节点，则在流所属的服务路径上向后传播流卸载决策， 接收到传播流卸载决定，网元从第二服务节点已经接收到流卸载决定。

公开(公告)号：US09178828B2

公开(公告)日：2015-11-03

申请号：US13872008

申请日：2013-04-26

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Surendra M. Kumar ,  Dileep K. Devireddy ,  Nagaraj A. Bagepalli ,  Abhijit Patra ,  Vina Ermagan ,  Fabio R. Maino ,  Victor Manuel Moreno ,  Paul Quinn

IPC: G06F9/455 ,  H04L12/851

CPC classification number: H04L47/2425 ,  G06F9/45533 ,  G06F2009/45562

Abstract: An example method for service insertion in a network environment is provided in one example and includes configuring a service node by tagging one or more interface ports of a virtual switch function to which the service node is connected with one or more policy identifiers. When data traffic associated with a policy identifier is received on a virtual overlay path the virtual switch function may then terminate the virtual overlay path and direct raw data traffic to the interface port of the service node that is tagged to the policy identifier associated with the data traffic.

Abstract translation: 在一个示例中提供了在网络环境中的服务插入的示例方法，并且包括通过标记服务节点与其连接的虚拟交换机功能的一个或多个接口端口与一个或多个策略标识符来配置服务节点。 当在虚拟覆盖路径上接收到与策略标识符相关联的数据流量时，虚拟交换机功能可以终止虚拟覆盖路径，并将原始数据流直接引导到标记为与数据相关联的策略标识符的服务节点的接口端口 交通。

公开(公告)号：US20150071285A1

公开(公告)日：2015-03-12

申请号：US14020649

申请日：2013-09-06

Applicant: CISCO TECHNOLOGY, INC

Inventor： Surendra M. Kumar ,  Dileep K. Devireddy ,  Nagaraj A. Bagepalli ,  Abhijit Patra

IPC: H04L12/741 ,  H04L12/725

CPC classification number: H04L45/306 ,  H04L45/54

Abstract: An example method for distributed service chaining in a network environment is provided and includes receiving a packet belonging to a service chain in a distributed virtual switch (DVS) network environment, wherein the packet includes a network service header (NSH) indicating a service path identifier identifying the service chain and a location of the packet on the service chain, evaluating a service forwarding table to determine a next service node based on the service path identifier and the location, with a plurality of different forwarding tables distributed across the DVS at a corresponding plurality of virtual Ethernet Modules (VEMs) associated with respective service nodes in the service chain, and forwarding the packet to the next service node, with substantially all services in the service chain provided sequentially to the packet in a single service loop on a service overlay.

Abstract translation: 提供了一种在网络环境中分布式服务链接的示例方法，包括：在分布式虚拟交换机（DVS）网络环境中接收属于服务链的分组，其中分组包括指示服务路径标识符的网络服务报头（NSH） 在所述服务链上识别所述服务链和所述分组的位置，评估服务转发表以基于所述服务路径标识符和所述位置来确定下一个服务节点，具有分布在所述DVS上的相应的多个不同的转发表 多个虚拟以太网模块（VEM），其与服务链中的相应服务节点相关联，并且将分组转发到下一个服务节点，服务链中的基本上所有服务在服务覆盖中的单个服务循环中顺序地提供给分组 。

公开(公告)号：US20140321459A1

公开(公告)日：2014-10-30

申请号：US13872008

申请日：2013-04-26

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Surendra M. Kumar ,  Dileep K. Devireddy ,  Nagaraj A. Bagepalli ,  Abhijit Patra ,  Vina Ermagan ,  Fabio R. Maino ,  Victor Manuel Moreno ,  Paul Quinn

IPC: H04L12/851

CPC classification number: H04L47/2425 ,  G06F9/45533 ,  G06F2009/45562

Abstract: An example method for service insertion in a network environment is provided in one example and includes configuring a service node by tagging one or more interface ports of a virtual switch function to which the service node is connected with one or more policy identifiers. When data traffic associated with a policy identifier is received on a virtual overlay path the virtual switch function may then terminate the virtual overlay path and direct raw data traffic to the interface port of the service node that is tagged to the policy identifier associated with the data traffic.

Abstract translation: 在一个示例中提供了在网络环境中的服务插入的示例方法，并且包括通过标记服务节点与其连接的虚拟交换机功能的一个或多个接口端口与一个或多个策略标识符来配置服务节点。 当在虚拟覆盖路径上接收到与策略标识符相关联的数据流量时，虚拟交换机功能可以终止虚拟覆盖路径，并将原始数据流直接引导到标记为与数据相关联的策略标识符的服务节点的接口端口 交通。