公开(公告)号：US09350628B2

公开(公告)日：2016-05-24

申请号：US13897020

申请日：2013-05-17

Applicant: Cisco Technology, Inc.

Inventor： Samer Salam ,  Norman W. Finn

IPC: G06F15/173 ,  H04L12/26 ,  H04L12/24

CPC classification number: H04L43/04 ,  H04L41/0213 ,  H04L41/0893 ,  H04L43/0811 ,  H04L43/10

Abstract: In one embodiment, a particular maintenance end-point (MEP) transmits, during a joining phase, one or more join announcement messages (JAMs) to other MEPs in a network. The one or more JAMs request addition of the particular MEP without generation of a first alarm. The particular MEP transmits, during an operational phase, continuity check messages (CCMs) to the other MEPs in the network. Alarm generation is active during the operational phase. The particular MEP transmits, during a leaving phase, one or more leave announcement messages (LAMs) to the other MEPs in the network. The one or more LAMs request removal of the particular MEP without generation of a second alarm.

Abstract translation: 在一个实施例中，特定维护端点（MEP）在加入阶段期间向网络中的其他MEP发送一个或多个联合通告消息（JAM）。 一个或多个JAM请求添加特定的MEP而不产生第一个报警。 特定MEP在运行阶段期间将连续性检查消息（CCM）发送到网络中的其他MEP。 报警生成在运行阶段有效。 特定MEP在离开阶段期间向网络中的其他MEP发送一个或多个离开通告消息（LAM）。 一个或多个LAM请求移除特定MEP而不产生第二个警报。

公开(公告)号：US20160099883A1

公开(公告)日：2016-04-07

申请号：US14508680

申请日：2014-10-07

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Eric A. Voit ,  Samer Salam ,  Ludwig Alexander Clemm ,  Yegnanarayanan Gargya Chandramouli

IPC: H04L12/911 ,  H04L12/24 ,  H04L12/803

CPC classification number: H04L45/22 ,  H04L41/0672 ,  H04L41/0873 ,  H04L45/28 ,  H04L47/122

Abstract: An example method for facilitating conflict avoidant traffic routing in a network environment is provided and includes detecting, at a network element, an intent conflict at a peer network element in a network, and changing a forwarding decision at the network element to steer traffic around the conflicted peer network element. The intent conflict refers to an incompatibility between an asserted intent associated with the traffic and an implemented intent associated with the traffic. In specific embodiments, the detecting includes mounting rules from the peer network element into the network element, and analyzing the mounted rules to determine intent conflict. In some embodiments, a central controller in the network deploys one or more intentlets on a plurality of network elements in the network according to corresponding intent deployment parameters.

Abstract translation: 提供了一种用于促进网络环境中的冲突避免业务路由的示例性方法，并且包括在网络元件处检测网络中的对等网络元件处的意图冲突，以及改变网络元件处的转发决策以引导网络周围的流量 冲突的对等网元。 意图冲突是指与流量相关联的断言意图与与流量相关联的实现意图之间的不兼容性。 在具体实施例中，检测包括将规则从对等网络元件安装到网络元件中，并且分析所安装的规则以确定意图冲突。 在一些实施例中，网络中的中央控制器根据对应的意图部署参数在网络中的多个网络元件上部署一个或多个意图。

公开(公告)号：US09148290B2

公开(公告)日：2015-09-29

申请号：US13930680

申请日：2013-06-28

Applicant: Cisco Technology, Inc.

Inventor： Samer Salam ,  Ali Sajassi ,  Ayan Banerjee ,  Sami Boutros

IPC: H04L12/28 ,  H04L12/18

CPC classification number: H04L12/1836

Abstract: In one embodiment, a particular PE device of a plurality of multi-homing PE devices between a core network and a local network determines a subset of traffic for which the particular PE device is responsible. The particular PE also establishes, with itself as root, a multicast tree within the local network for underlay multicast groups. Traffic received at the particular PE from the core network is admitted into the local network only if the core traffic corresponds to the subset of traffic for which the particular PE device is responsible (and mapped into one of the underlay multicast groups for which the particular PE device is the root). Also, multicast traffic received at the particular PE from the local network is forwarded into the core network only if the multicast traffic corresponds to the subset of traffic for which the particular PE device is responsible.

Abstract translation: 在一个实施例中，核心网络和本地网络之间的多个多归属PE设备的特定PE设备确定特定PE设备负责的流量子集。 特定的PE还以本身为根建立本地网络内的组播树，用于底层组播组。 只有当核心流量对应于特定PE设备负责的流量子集（并映射到特定PE的底层多播组中的一个）时，才从核心网络在特定PE处接收的流量被允许进入本地网络 设备是根）。 此外，仅当组播流量对应于特定PE设备所负责的业务子集时，才将来自本地网络的特定PE处接收到的组播流量转发到核心网络。

公开(公告)号：US20150222490A1

公开(公告)日：2015-08-06

申请号：US14174376

申请日：2014-02-06

Applicant: Cisco Technology, Inc.

Inventor： Samer Salam ,  Lionel Florit

IPC: H04L12/24

CPC classification number: H04L67/2809 ,  H04L41/00 ,  H04L41/12

Abstract: In one embodiment, a broker device receives device-identifying data to identify a device in a computer network. An ontology associated with the device-identifying data is then identified by the broker device and in response to identifying the ontology, interpretation instructions related to the identified ontology are determined. The broker device receives data from the identified device and interprets the received data based on the interpretation instructions.

Abstract translation: 在一个实施例中，代理设备接收设备识别数据以识别计算机网络中的设备。 然后由代理设备识别与设备识别数据相关联的本体，并且响应于识别本体，确定与所识别的本体相关的解释指令。 代理设备从所识别的设备接收数据，并且基于解释指令来解释所接收的数据。

公开(公告)号：US09049133B2

公开(公告)日：2015-06-02

申请号：US13927350

申请日：2013-06-26

Applicant: Cisco Technology, Inc.

Inventor： Sami Boutros ,  Ali Sajassi ,  Samer Salam

IPC: G06F15/173 ,  H04L12/721

CPC classification number: H04L45/14 ,  H04L12/4641 ,  H04L45/04

Abstract: In one embodiment, one or more point-to-point (P2P) services are established between attachment circuits on provider edge (PE) devices in a computer network, and each of the one or more P2P services (e.g., Virtual Private Wire Service, VPWS) are associated with an Ethernet virtual private network (E-VPN) Ethernet Auto-Discovery (A-D) route, where links between the PE devices and customer edge (CE) devices are configured as Ethernet interfaces with Ethernet tagging. As such, the Ethernet A-D route may then be exchanged for each P2P service attachment circuit, and forwarding can be performed on the one or more P2P services without performing a media access control (MAC) address lookup and without performing MAC learning.

Abstract translation: 在一个实施例中，在计算机网络中的提供商边缘（PE）设备上的附接电路之间建立一个或多个点对点（P2P）服务，并且所述一个或多个P2P服务（例如，虚拟专线服务， VPWS）与以太网虚拟专用网（E-VPN）以太网自动发现（AD）路由相关联，其中PE设备和客户端（CE）设备之间的链路被配置为具有以太网标记的以太网接口。 因此，可以为每个P2P服务附接电路交换以太网A-D路由，并且可以在一个或多个P2P服务上执行转发，而不执行媒体访问控制（MAC）地址查找，而不执行MAC学习。

公开(公告)号：US20140286173A1

公开(公告)日：2014-09-25

申请号：US13847904

申请日：2013-03-20

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Shwetha Subray Bhandari ,  Samer Salam ,  Kannan Jayaraman ,  Arvind Saproo

IPC: H04W28/02 ,  H04W24/02

CPC classification number: H04W28/0236 ,  H04L45/02 ,  H04W24/02 ,  H04W40/12

Abstract: A method is provided in one example and includes receiving a current bandwidth characteristic for a link, where the current bandwidth characteristic is determined under fading conditions associated with signal propagation on the link. The method can also include calculating a new cost for the link that is different from a nominal cost associated with a nominal bandwidth of the link without the fading conditions. The method could also include routing at least a portion of a plurality of flows that are to traverse the link away from the link based, at least in part, on the new cost. Another example method includes receiving the current bandwidth characteristic for the link, comparing the current bandwidth characteristic with a preconfigured low watermark corresponding to a class-specific MTR topology associated with a class of traffic traversing the link, and removing the link from the MTR topology based on the current bandwidth characteristic.

Abstract translation: 在一个示例中提供了一种方法，并且包括接收用于链路的当前带宽特性，其中在与链路上的信号传播相关联的衰落条件下确定当前带宽特性。 该方法还可以包括计算不同于没有衰落条件的与链路的标称带宽相关联的名义成本的链路的新成本。 该方法还可以包括至少部分地基于新成本路由将要从链路横越链路的多个流的至少一部分路由。 另一示例性方法包括：接收当前带宽特性，将当前带宽特性与对应于与通过链路的一类流量相关联的类特定MTR拓扑相对应的预配置低水印，以及从基于MTR拓扑的链路中移除链路 关于当前的带宽特性。

公开(公告)号：US20130229924A1

公开(公告)日：2013-09-05

申请号：US13846201

申请日：2013-03-18

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Samer Salam ,  Wojciech Dec

IPC: H04L29/12

CPC classification number: H04L61/10 ,  H04L43/0811 ,  H04L43/10

Abstract: In one embodiment, an aggregation device is configured to aggregate traffic of a plurality of customer edge (CE) devices into a single bridge-domain. The aggregation device receives connectivity fault management (CFM) packets of a CFM protocol from the plurality of CE devices. Each received CFM packet includes a media access control (MAC) address of an access port of the CE device from which the CFM packet was transmitted. The aggregation device detects conflicting MAC addresses between access ports of CE devices by comparing MAC addresses of the received CFM packets. The aggregation device notifies one or more of the plurality of CE devices of the conflict.

Abstract translation: 在一个实施例中，聚合设备被配置为将多个客户边缘（CE）设备的业务聚合成单个桥域。 聚合设备从多个CE设备接收CFM协议的连接故障管理（CFM）报文。 每个接收到的CFM分组包括从其发送CFM分组的CE设备的接入端口的媒体访问控制（MAC）地址。 聚合设备通过比较接收到的CFM报文的MAC地址来检测CE设备的接入端口之间的冲突MAC地址。 聚合设备通知多个CE设备中的一个或多个冲突。