公开(公告)号：US08650285B1

公开(公告)日：2014-02-11

申请号：US13069249

申请日：2011-03-22

申请人： Ali Sajassi ,  Samer Salam

发明人： Ali Sajassi ,  Samer Salam

IPC分类号： G06F15/173

CPC分类号： H04L45/586 ,  H04L45/16 ,  H04L45/18 ,  H04L45/50

摘要： A first multicast data packet can be received by a particular edge node, forwarded from another network element in a network, the first packet including data received from a particular device interfacing with the network through a first edge node. The first packet is multicast by the first edge node. The particular edge node is included in a redundancy group including at least one other edge node. The first multicast data packet is examined to identify a first hint corresponding to the particular device. In response to identifying the particular device, it is determined that the particular edge node does not interface with the particular device. It is further determined that the particular edge node is designated as a forwarding node for the redundancy group. Based on these determinations, the first packet is forwarded by the particular edge node while preventing looping and duplicate packet delivery.

摘要翻译： 第一组播数据分组可以由特定边缘节点接收，从网络中的另一网络元件转发，第一分组包括从通过第一边缘节点与网络接口的特定设备接收的数据。 第一个分组由第一个边缘节点组播。 特定边缘节点包括在包括至少一个其他边缘节点的冗余组中。 检查第一组播数据分组以识别与特定设备相对应的第一提示。 响应于识别特定设备，确定特定边缘节点不与特定设备接口。 进一步确定特定边缘节点被指定为冗余组的转发节点。 基于这些确定，第一分组由特定边缘节点转发，同时防止循环和重复分组传送。

公开(公告)号：US20130308646A1

公开(公告)日：2013-11-21

申请号：US13471724

申请日：2012-05-15

申请人： Ali Sajassi ,  Samer Salam ,  Keyur Patel

发明人： Ali Sajassi ,  Samer Salam ,  Keyur Patel

IPC分类号： H04L12/56

CPC分类号： H04L45/66 ,  H04L45/04 ,  H04L45/50 ,  H04L61/6022

摘要： In one embodiment, a method includes obtaining an indication that a device is attached to a provider edge. The device has a media access control (MAC) address, wherein the device was previously attached to a first provider edge (PE) of a Multiprotocol Label Switching (MPLS) network. The method also includes issuing a first advertisement that identifies the MAC address. The first advertisement includes a first MAC address mobility attribute arranged to indicate a number of times the MAC address has moved with respect to the MPLS network.

摘要翻译： 在一个实施例中，一种方法包括获得设备附接到提供商边缘的指示。 该设备具有媒体访问控制（MAC）地址，其中该设备先前连接到多协议标签交换（MPLS）网络的第一提供商边缘（PE）。 该方法还包括发出标识MAC地址的第一广告。 第一广告包括被配置为指示MAC地址相对于MPLS网络移动的次数的第一MAC地址移动性属性。

公开(公告)号：US20120014261A1

公开(公告)日：2012-01-19

申请号：US12835777

申请日：2010-07-14

申请人： Samer Salam ,  Ali Sajassi

发明人： Samer Salam ,  Ali Sajassi

IPC分类号： H04L12/26

CPC分类号： H04L43/10 ,  H04L43/026 ,  H04L43/0811

摘要： In certain embodiments, monitoring a flow set to detect faults includes identifying, by a first maintenance end point, a flow set comprising flows that utilize a paths from the first maintenance end point through one or more intermediate nodes to a second maintenance end point. Continuity check messages are generated. Each continuity check message is formatted as a data packet that an intermediate node forwards. Each continuity check message comprises a header comprising a maintenance indicator. The continuity check messages are transmitted on the flows to allow the second maintenance end point to monitor the paths.

摘要翻译： 在某些实施例中，监视流程集以检测故障包括由第一维护终点识别包括利用从第一维护终点通过一个或多个中间节点到第二维护终点的路径的流的流集合。 生成连续性检查消息。 每个连续性检查消息被格式化为中间节点转发的数据包。 每个连续性检查消息包括包括维护指示符的报头。 连续性检查消息在流上传输，以允许第二维护终点监视路径。

公开(公告)号：US20110194403A1

公开(公告)日：2011-08-11

申请号：US12658503

申请日：2010-02-05

申请人： Ali Sajassi ,  Samer Salam

发明人： Ali Sajassi ,  Samer Salam

IPC分类号： H04J3/14

CPC分类号： H04L12/462 ,  H04L45/26

摘要： In one embodiment, a method includes generating at an ingress routing bridge in a TRansparent Interconnection of Lots of Links (TRILL) network, a trace message for a specified flow along a path from the ingress routing bridge to a destination reachable through the TRILL network, transmitting a single trace message from the ingress routing bridge to a next-hop routing bridge in the TRILL network, receiving a plurality of reply messages in response to the transmitted trace message, and identifying the routing bridges in the path and a location of any fault in the path. An apparatus for fault isolation in a TRILL network is also disclosed.

摘要翻译： 在一个实施例中，一种方法包括在多个链路（TRILL）网络的跨平台互连中的入口路由桥上生成用于沿着从入口路由网桥到可通过TRILL网络到达的目的地的路径的指定流的跟踪消息， 将来自入口路由网桥的单个跟踪消息发送到TRILL网络中的下一跳路由桥接器，响应于所发送的跟踪消息接收多个应答消息，并且识别路径中的路由桥和任何故障的位置 在路上 还公开了一种用于TRILL网络中的故障隔离的装置。

公开(公告)号：US20090034413A1

公开(公告)日：2009-02-05

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：US08761048B2

公开(公告)日：2014-06-24

申请号：US13471676

申请日：2012-05-15

申请人： Ali Sajassi ,  Samer Salam ,  Sami Boutros

发明人： Ali Sajassi ,  Samer Salam ,  Sami Boutros

IPC分类号： H04L12/28 ,  H04L12/24 ,  H04L29/12

CPC分类号： H04L41/12 ,  H04L29/12066 ,  H04L45/02 ,  H04L45/04 ,  H04L45/50 ,  H04L61/1511

摘要： In one embodiment, a method includes determining when a predetermined period of time has elapsed, and determining whether at least a first message has been obtained on a first port of a node during the predetermined period of time when it is determined that the predetermined period of time has elapsed. The method also includes identifying the first port as being connected to a single-homed site when it is determined that the at least first message has not been obtained on the first port during the predetermined period of time. The first port is identified as being connected to a multi-homed network, a multi-homed device, or a hierarchical Ethernet segment when it is determined that the at least first message has been obtained on the first port during the predetermined period of time.

摘要翻译： 在一个实施例中，一种方法包括确定何时经过了预定的时间段，并且在确定在预定时间段的预定时间段内，确定在节点的第一端口上是否已经获得了至少第一消息 时间已经过去了 该方法还包括当在预定时间段内确定在第一端口上尚未获得至少第一消息时，将第一端口识别为连接到单个归属站点。 当在预定时间段内确定已经在第一端口上获得了至少第一消息时，第一端口被识别为连接到多归属网络，多归属设备或分层以太网段。

公开(公告)号：US08650286B1

公开(公告)日：2014-02-11

申请号：US13087259

申请日：2011-04-14

申请人： Ali Sajassi ,  Samer Salam

发明人： Ali Sajassi ,  Samer Salam

IPC分类号： G06F15/173

CPC分类号： H04L45/586 ,  H04L45/16 ,  H04L45/18 ,  H04L45/50

摘要： Methods, systems, and apparatus, including computer programs encoded on a storage media, for preventing looping and duplicate frame delivery in a network environment. A first control plane message is received from a first edge node in a plurality of edge nodes in a plurality of network elements of a network, the first control plane message identifying a first hint to be included in first multicast packets that include data originating from a first computing device interfaced with the first edge node and are forwarded to the network through the first edge node. A data record is stored identifying the association between the first hint and the first computing device. The data record is used to determine that multicast packets including the first hint originate from the first computing device and are not to be forwarded to the first computing device by edge nodes interfacing with the first computing device.

摘要翻译： 方法，系统和装置，包括在存储介质上编码的计算机程序，用于防止网络环境中的循环和重复帧传送。 从网络的多个网络元件中的多个边缘节点中的第一边缘节点接收第一控制平面消息，所述第一控制平面消息标识要被包括在第一多播分组中的第一提示，所述第一提示包括源自 第一计算设备与第一边缘节点接口并通过第一边缘节点转发到网络。 存储识别第一提示和第一计算设备之间的关联的数据记录。 数据记录用于确定包括第一提示的多播分组源自第一计算设备，并且不被与第一计算设备接口的边缘节点转发到第一计算设备。

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。