公开(公告)号：US20130254359A1

公开(公告)日：2013-09-26

申请号：US13428436

申请日：2012-03-23

申请人： Sami Boutros ,  Samer Salam ,  Ali Sajassi ,  Clarence Filsfils

发明人： Sami Boutros ,  Samer Salam ,  Ali Sajassi ,  Clarence Filsfils

IPC分类号： G06F15/173

CPC分类号： H04L61/103 ,  H04L61/6009

摘要： An example method is provided that includes determining whether an address resolution protocol reply from a local machine has been received at an edge node; updating a local cache based on the reply from the local machine; and sending the reply to a plurality of edge nodes through a data plane of a data center interconnect. In more specific implementations, the method can include determining whether an address resolution protocol request has been received from the local machine. The method could also include updating a local machine cache based on the request. In certain implementations, the method can include determining whether the request is targeting the local machine; and dropping the request if the request is targeting the local machine. The method could also include sending the request through the data center interconnect if the request is not targeting the local machine.

摘要翻译： 提供了一种示例性方法，其包括确定在边缘节点处是否已经接收到来自本地机器的地址解析协议应答; 根据本地机器的回复更新本地缓存; 并通过数据中心互连的数据平面将答复发送到多个边缘节点。 在更具体的实现中，该方法可以包括确定是否已经从本地机器接收到地址解析协议请求。 该方法还可以包括基于该请求更新本地机器缓存。 在某些实现中，该方法可以包括确定请求是否针对本地机器; 如果请求针对本地机器，则删除该请求。 该方法还可以包括如果请求不针对本地机器，则通过数据中心互连发送请求。

公开(公告)号：US20130148657A1

公开(公告)日：2013-06-13

申请号：US13313968

申请日：2011-12-07

申请人： Samer Salam ,  Ali Sajassi ,  Sami Boutros

发明人： Samer Salam ,  Ali Sajassi ,  Sami Boutros

IPC分类号： H04L12/56

CPC分类号： H04L45/68 ,  H04L12/4641 ,  H04L45/66

摘要： In one embodiment, a network device in a set of network devices obtains a pseudowire label for a Provider Edge (PE) device, where the pseudowire label corresponds to a Virtual Local Area Network (VLAN) on the PE device. In addition, the network device obtains a set of one or more MAC addresses reachable via the PE device, wherein the set of network devices support Ethernet Virtual Private Network (E-VPN) and are in the same redundancy group such that the set of network devices are coupled to the same customer edge device. The network device stores the pseudowire label in association with the set of one or more MAC addresses. The network device uses the pseudowire label to encapsulate traffic associated with the VLAN that is received from the customer edge device and destined to the set of MAC addresses reachable via the PE device.

摘要翻译： 在一个实施例中，一组网络设备中的网络设备获得用于提供商边缘（PE）设备的伪线标签，其中伪线标签对应于PE设备上的虚拟局域网（VLAN）。 另外，网络设备获得通过PE设备可达到的一个或多个MAC地址的集合，其中该组网络设备支持以太网虚拟专用网（E-VPN），并且处于相同的冗余组中，使得该组网络 设备耦合到相同的客户边缘设备。 网络设备将伪线标签与一组或多个MAC地址相关联地存储。 网络设备使用伪线标签封装与客户边缘设备接收到的VLAN相关联的流量，并发往可通过PE设备到达的一组MAC地址。

公开(公告)号：US08121041B2

公开(公告)日：2012-02-21

申请号：US11881917

申请日：2007-07-30

申请人： Ali Sajassi ,  Samer Salam

发明人： Ali Sajassi ,  Samer Salam

IPC分类号： H04L12/26

CPC分类号： H04L12/1863 ,  H04L12/413 ,  H04L41/0668 ,  H04L41/0677

摘要： A method and system for redundancy in Ethernet Virtual Connections (EVCs) are disclosed. In one embodiment, a method includes transmitting continuity check messages from a node in an Ethernet Virtual Connection connecting at least one root node and a plurality of leaf nodes in a point-to-multipoint or multipoint-to-multipoint connection, identifying a failure in a primary path between the root node and the leaf nodes, switching to a backup path, and advertising the switching to the backup path to at least one node.

摘要翻译： 公开了以太网虚拟连接（EVC）中冗余的方法和系统。 在一个实施例中，一种方法包括：从连接至少一个根节点和多个叶节点的点对多点或多点到多点连接中的以太网虚拟连接中的节点发送连续性检查消息，识别故障 根节点和叶节点之间的主要路径，切换到备份路径，并且向至少一个节点通告到备份路径的切换。

公开(公告)号：US07835370B2

公开(公告)日：2010-11-16

申请号：US11117017

申请日：2005-04-28

申请人： Ali Sajassi

发明人： Ali Sajassi

IPC分类号： H04L12/28 ,  H04J3/16

CPC分类号： H04L12/465 ,  H04L12/2881 ,  H04L12/66 ,  H04L45/00

摘要： A DSLAM aggregation topology VLAN bundling mechanism includes an edge device port that receives a packet from a Digital Subscriber Line Access Multiplexer (DSLAM) device, the packet including an inner Virtual Local Area Network (VLAN) tag that identifies a Digital Subscriber Line (DSL) subscriber. A processor of the edge device adds an outer VLAN tag to the packet, the outer VLAN tag identifying the DSLAM and a destination server coupled to an Ethernet access network. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).

摘要翻译： DSLAM聚合拓扑VLAN绑定机制包括从数字用户线路接入复用器（DSLAM）设备接收分组的边缘设备端口，该分组包括标识数字用户线路（DSL）的内部虚拟局域网（VLAN）标签， 订户。 边缘设备的处理器将一个外部VLAN标签添加到数据包，外部VLAN标签标识DSLAM，以及一个目标服务器耦合到以太网接入网络。 要强调的是，该摘要被提供以符合要求抽象的规则，允许搜索者或其他读者快速确定技术公开内容的主题。 提交它的理解是，它不会用于解释或限制权利要求的范围或含义。 37 CFR 1.72（b）。

公开(公告)号：US20100238808A1

公开(公告)日：2010-09-23

申请号：US12409314

申请日：2009-03-23

申请人： Samer M. Salam ,  Ali Sajassi ,  Samuel Henderson

发明人： Samer M. Salam ,  Ali Sajassi ,  Samuel Henderson

IPC分类号： H04L12/26

CPC分类号： H04L41/0659 ,  H04L12/4641 ,  H04L12/4675 ,  H04L43/0811

摘要： Connectivity Fault Management (CFM) auto-provisioning using Virtual Private LAN Service (VPLS) auto-discovery is described. In one embodiment, an apparatus comprises VPLS logic and configuration logic. The VPLS logic is operable at least to receive and send configuration information for a VPLS instance, where the configuration information comprises: a first value that uniquely identifies the VPLS instance; and a plurality of second values that respectively and uniquely identify a plurality of network elements that are operable to provide the VPLS instance. The configuration logic is operable at least to automatically configure, based on the first value and on the plurality of second values, a CFM association and a local maintenance endpoint (MEP) for the VPLS instance on the apparatus.

摘要翻译： 描述了使用虚拟专用LAN服务（VPLS）自动发现的连接故障管理（CFM）自动配置。 在一个实施例中，一种装置包括VPLS逻辑和配置逻辑。 所述VPLS逻辑至少可操作地接收和发送VPLS实例的配置信息，其中所述配置信息包括：唯一地标识所述VPLS实例的第一值; 以及分别唯一地识别可操作以提供VPLS实例的多个网络元件的多个第二值。 所述配置逻辑至少可操作地基于所述第一值和所述多个第二值自动配置所述设备上的VPLS实例的CFM关联和本地维护端点（MEP）。

公开(公告)号：US20100157793A1

公开(公告)日：2010-06-24

申请号：US12344099

申请日：2008-12-24

申请人： Ali Sajassi ,  Samer Salam

发明人： Ali Sajassi ,  Samer Salam

IPC分类号： G06F11/00

CPC分类号： H04L12/2859 ,  G06F11/2007 ,  H04L69/40

摘要： In one embodiment, a system comprises a plurality of provider edge (PE) devices, the PE devices having a plurality of ports; and a pseudo-link aggregation control protocol (LACP) module instantiated for each of the ports. The pseudo-LACP module allows the PE devices to support dual-homing of an access side, the access side including either an access node or an access network, without running any control protocol for redundancy on the access side.

摘要翻译： 在一个实施例中，系统包括多个提供商边缘（PE）设备，所述PE设备具有多个端口; 以及针对每个端口实例化的伪链路聚合控制协议（LACP）模块。 伪LACP模块允许PE设备支持接入侧的双归属，接入侧包括接入节点或接入网络，而不在接入侧运行任何用于冗余的控制协议。

公开(公告)号：US07646778B2

公开(公告)日：2010-01-12

申请号：US11796636

申请日：2007-04-27

申请人： Ali Sajassi

发明人： Ali Sajassi

IPC分类号： H04L12/28 ,  H04L12/66

CPC分类号： H04L12/4625

摘要： In one embodiment, a Provider Backbone Edge Bridge (BEB) IEEE 802.1ah compliant apparatus includes a B-component having one or more provider backbone ports, and a first I-component coupled with the B-component, the first I-component being configured to support a S-tagged interface. A second I-component is also coupled with the B-component, the second I-component being configured to support a C-tagged interface, thereby facilitating direct connection to a device operating in compliance with IEEE 802.1Q specification. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure.

摘要翻译： 在一个实施例中，提供商骨干边缘桥（BEB）IEEE 802.1ah兼容设备包括具有一个或多个提供商主干端口的B组件和与该B组件耦合的第一I组件，该第一I组件被配置 以支持S-tagged接口。 第二I分量还与B分量耦合，第二I分量被配置为支持C标记的接口，从而有助于直接连接到符合IEEE 802.1Q规范的设备。 要强调的是，该摘要被提供以符合要求抽象的规则，允许搜索者或其他读者快速确定技术公开内容的主题。

公开(公告)号：US20090268731A1

公开(公告)日：2009-10-29

申请号：US12148816

申请日：2008-04-23

申请人： Ashok Narayanan ,  Robert Goguen ,  Ali Sajassi ,  Samir Vapiwala

发明人： Ashok Narayanan ,  Robert Goguen ,  Ali Sajassi ,  Samir Vapiwala

IPC分类号： H04L12/56

CPC分类号： H04L12/18 ,  H04L45/00 ,  H04L45/16 ,  H04L45/50

摘要： A method and apparatus for establishing multicast and unicast forwarding are disclosed. In one embodiment, a method includes transmitting path messages to a plurality of receivers, receiving a plurality of messages in response to the path messages and establishing unicast and multicast forwarding based on received unicast and multicast labels. Each of the receivers is associated with a sub-LSP (Label Switched Path) in a Point-to-Multipoint (P2MP) LSP and the response messages include a multicast label and at least one unicast label corresponding to a unicast path to one of the receivers.

摘要翻译： 公开了一种建立组播和单播转发的方法和装置。 在一个实施例中，一种方法包括向多个接收机发送路径消息，响应于路径消息接收多条消息，并基于接收的单播和多播标签建立单播和多播转发。 每个接收机与点对多点（P2MP）LSP中的子LSP（标签交换路径）相关联，并且响应消息包括多播标签和对应于单播路径中的一个的至少一个单播标签 接收器。

公开(公告)号：US20090144403A1

公开(公告)日：2009-06-04

申请号：US11948405

申请日：2007-11-30

申请人： Ali Sajassi ,  Samer M. Salam

发明人： Ali Sajassi ,  Samer M. Salam

IPC分类号： G06F15/173

CPC分类号： H04L12/4625 ,  H04L12/4633 ,  H04L45/48 ,  H04L45/66

摘要： In one embodiment, a method for managing topology changes in a Layer 2 network is provided. The method may comprise receiving a change notification at a provider edge bridging device and associating the change notification with a customer service. The method may further comprise identifying at least one destination provider edge bridging device associated with the customer service, encapsulating the change notification in a data frame and tunnelling the data frame over a tunnel comprising at least one core device to the at least one destination provider edge bridging device associated with the customer service, the at least one core bridging device tunnelling the data frame based on information relating to the destination provider edge bridging device.

摘要翻译： 在一个实施例中，提供了一种用于管理第2层网络中的拓扑变化的方法。 该方法可以包括在提供商边缘桥接设备处接收改变通知并将该改变通知与客户服务相关联。 所述方法还可以包括：识别与所述客户服务相关联的至少一个目的地提供者边缘桥接设备，将所述改变通知封装在数据帧中，并且将所述数据帧通过包括至少一个核心设备的隧道进行隧道传送到所述至少一个目的地提供商边缘 与所述客户服务相关联的桥接设备，所述至少一个核心桥接设备基于与所述目的地提供商边缘桥接设备相关的信息来隧道化所述数据帧。

公开(公告)号：US20090122732A1

公开(公告)日：2009-05-14

申请号：US11983678

申请日：2007-11-08

申请人： Frank Brockners ,  Ali Sajassi ,  Robert James Goguen ,  Ijsbrand Wijnands

发明人： Frank Brockners ,  Ali Sajassi ,  Robert James Goguen ,  Ijsbrand Wijnands

IPC分类号： H04L5/16 ,  H04L12/56

CPC分类号： H04L45/00 ,  H04L45/16 ,  H04L45/48 ,  H04L45/50 ,  H04L45/507

摘要： In one embodiment, a method includes sending upstream to a nearest neighbor node, by a Client Label Switched Router (LSR), a downstream label map message of a Server-Forwarding Equivalence Class type (S-FEC-DOWN). In response to the S-FEC-DOWN, a downstream forwarding state from the nearest neighbor node to the Client LSR is established. An upstream label map message of a Client-Forwarding Equivalence Class type (C-FEC UP) is received from the nearest neighbor node. An upstream forwarding state corresponding to the C-FEC UP is then established by the Client LSR.

摘要翻译： 在一个实施例中，一种方法包括由客户端标签交换路由器（LSR）向服务器转发等价类型（S-FEC-DOWN）的下游标签映射消息向上游发送最近邻居节点。 响应S-FEC-DOWN，建立从最近邻节点到客户端LSR的下游转发状态。 从最近邻节点接收到客户转发等价类型（C-FEC UP）的上游标签映射消息。 然后由客户端LSR建立与C-FEC UP对应的上行转发状态。