公开(公告)号：US08988984B2

公开(公告)日：2015-03-24

申请号：US13021530

申请日：2011-02-04

Applicant: Pedro Miguel Martins Roque Marques ,  Ali Sajassi ,  Samer Salam ,  Keyur Patel

Inventor： Pedro Miguel Martins Roque Marques ,  Ali Sajassi ,  Samer Salam ,  Keyur Patel

IPC: H04L12/26 ,  H04L12/715 ,  H04L12/703

CPC classification number: H04L45/04 ,  H04L45/28

Abstract: In one embodiment, a network device may participate in an election process to elect one of two or more Provider Edge devices of a Redundancy Group to be a Designated Forwarder for the Redundancy Group, where the Redundancy Group is in a Service Provider network, and where the Redundancy Group serves a Customer Edge device of a customer network. The network device may forward multi-destination traffic to the Customer Edge device according to whether the network device is elected to be the Designated Forwarder for the Redundancy Group. Multi-destination traffic may include multicast traffic, broadcast traffic, or destination unknown unicast traffic.

Abstract translation: 在一个实施例中，网络设备可以参与选举过程，以选择冗余组的两个或更多个提供者边缘设备之一作为冗余组的指定转发器，其中冗余组在服务提供商网络中，并且其中 冗余组为客户网络的客户端设备提供服务。 根据网络设备是否被选为冗余组的指定转发器，网络设备可以将多目标流量转发到客户边缘设备。 多目标流量可以包括多播流量，广播流量或目的地未知单播流量。

公开(公告)号：US20120201124A1

公开(公告)日：2012-08-09

申请号：US13021530

申请日：2011-02-04

Applicant: Pedro Miguel Martins Roque Marques ,  Ali Sajassi ,  Samer Salam ,  Keyur Patel

Inventor： Pedro Miguel Martins Roque Marques ,  Ali Sajassi ,  Samer Salam ,  Keyur Patel

IPC: H04L12/56

CPC classification number: H04L45/04 ,  H04L45/28

Abstract: In one embodiment, a network device may participate in an election process to elect one of two or more Provider Edge devices of a Redundancy Group to be a Designated Forwarder for the Redundancy Group, where the Redundancy Group is in a Service Provider network, and where the Redundancy Group serves a Customer Edge device of a customer network. The network device may forward multi-destination traffic to the Customer Edge device according to whether the network device is elected to be the Designated Forwarder for the Redundancy Group. Multi-destination traffic may include multicast traffic, broadcast traffic, or destination unknown unicast traffic.

Abstract translation: 在一个实施例中，网络设备可以参与选举过程，以选择冗余组的两个或更多个提供者边缘设备之一作为冗余组的指定转发器，其中冗余组在服务提供商网络中，以及其中 冗余组为客户网络的客户端设备提供服务。 根据网络设备是否被选为冗余组的指定转发器，网络设备可以将多目标流量转发到客户边缘设备。 多目标流量可以包括多播流量，广播流量或目的地未知单播流量。

公开(公告)号：US20120177054A1

公开(公告)日：2012-07-12

申请号：US12987815

申请日：2011-01-10

Applicant: Manas Pati ,  Samer Salam ,  Keyur Patel ,  Ali Sajassi

Inventor： Manas Pati ,  Samer Salam ,  Keyur Patel ,  Ali Sajassi

IPC: H04L12/28 ,  H04L12/56

CPC classification number: H04L45/68 ,  H04L12/4625 ,  H04L12/4633 ,  H04L12/4641 ,  H04L45/04 ,  H04L45/24 ,  H04L45/54

Abstract: In one embodiment, a method includes establishing in a Virtual Private Local Area Network (LAN) Service (VPLS) over Multi-Protocol Label Switching (MPLS) network a floating pseudowire between a first provider edge router and a redundancy group having a plurality of provider edge routers each configured to forward data toward a external device. Each provider edge router in the redundancy group is configured to maintain an active link to the external device. A provider edge router that is not a member of the redundancy group sends data directed to the external device through the floating pseudowire. Only one provider edge router in the redundancy group receives and forwards the particular data to the external device.

Abstract translation: 在一个实施例中，一种方法包括在通过多协议标签交换（MPLS）网络的虚拟专用局域网（LAN）服务（VPLS）中建立第一供应商边缘路由器与具有多个提供商的冗余组之间的浮动伪线 每个边缘路由器配置为向外部设备转发数据。 冗余组中的每个提供商边缘路由器被配置为维持到外部设备的活动链路。 不是冗余组成员的提供商边缘路由器通过浮动伪线发送定向到外部设备的数据。 冗余组中只有一个提供商边缘路由器接收并将特定数据转发到外部设备。

公开(公告)号：US20100315946A1

公开(公告)日：2010-12-16

申请号：US12456100

申请日：2009-06-10

Applicant: Samer Salam ,  Ali Sajassi

Inventor： Samer Salam ,  Ali Sajassi

IPC: H04L1/00 ,  H04L12/26 ,  H04L12/28

CPC classification number: H04L45/28 ,  H04L12/437 ,  H04L12/4641 ,  H04L45/50 ,  H04L45/68

Abstract: In one embodiment, a method includes configuring a first node, located at an edge of a core network and connected to an access ring, with a maintenance end point for a virtual local area network on a port connecting the first node to the access ring. The first node operates in an active mode for the virtual local area network and is in communication with a second node located at the edge of the core network and connected to the access ring. The method further includes receiving and processing at a processor at the first node, continuity check messages from access nodes on the access ring, synchronizing the first node with the second node, and communicating from the first node to the second node to initiate switching of the second node from a backup mode to the active mode for the virtual local area network upon identification of a failure.

Abstract translation: 在一个实施例中，一种方法包括在连接第一节点到接入环的端口上配置位于核心网的边缘并连接到接入环的第一节点，其具有用于虚拟局域网的维护端点。 第一节点以虚拟局域网的活动模式运行，并且与位于核心网络边缘并连接到接入环的第二节点进行通信。 该方法还包括在第一节点处的处理器处接收和处理来自接入环上的接入节点的连续性检查消息，使第一节点与第二节点同步，以及从第一节点到第二节点的通信，以启动 第二节点从备份模式到虚拟局域网的活动模式。

公开(公告)号：US08880656B2

公开(公告)日：2014-11-04

申请号：US12464688

申请日：2009-05-12

Applicant: Samer Salam ,  Wojciech Dec ,  Dennis Clare ,  Richard Manfred Pruss ,  Frank Brockners

Inventor： Samer Salam ,  Wojciech Dec ,  Dennis Clare ,  Richard Manfred Pruss ,  Frank Brockners

IPC: G06F15/177 ,  H04L12/46

CPC classification number: H04L12/4641

Abstract: A customer edge device is automatically configured. A request for customer edge device configuration data may be transmitted to a provider edge device via an Ethernet-layer operations, administration, maintenance, and provisioning (OAM&P) protocol. The request for configuration data may be relayed from the Ethernet-layer OAM&P protocol to a configuration protocol. The request for configuration data may be transmitted from the provider edge device to a configuration repository server via the configuration protocol. The configuration repository server may transmit the requested configuration data to the provider edge device via the configuration protocol. The provider edge device may relay the configuration data from the configuration protocol to the Ethernet-layer OAM&P protocol and transmit the configuration data to a customer edge device via the Ethernet-layer OAM&P protocol. The customer edge device may automatically configure itself using the configuration data.

Abstract translation: 自动配置客户边缘设备。 客户边缘设备配置数据的请求可以经由以太网层操作，管理，维护和供应（OAM＆P）协议传送到提供商边缘设备。 配置数据的请求可以从以太网层OAM＆P协议中继到配置协议。 配置数据的请求可以经由配置协议从提供商边缘设备发送到配置库服务器。 配置存储库服务器可以经由配置协议将所请求的配置数据发送到提供商边缘设备。 提供商边缘设备可以将配置数据从配置协议中继到以太网层OAM＆P协议，并通过以太网层OAM＆P协议将配置数据传输到客户边缘设备。 客户边缘设备可以使用配置数据自动配置自身。

公开(公告)号：US08650285B1

公开(公告)日：2014-02-11

申请号：US13069249

申请日：2011-03-22

Applicant: Ali Sajassi ,  Samer Salam

Inventor： Ali Sajassi ,  Samer Salam

IPC: G06F15/173

CPC classification number: H04L45/586 ,  H04L45/16 ,  H04L45/18 ,  H04L45/50

Abstract: 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.

Abstract translation: 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

Applicant: Ali Sajassi ,  Samer Salam ,  Keyur Patel

Inventor： Ali Sajassi ,  Samer Salam ,  Keyur Patel

IPC: H04L12/56

CPC classification number: H04L45/66 ,  H04L45/04 ,  H04L45/50 ,  H04L61/6022

Abstract: 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.

Abstract translation: 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：US08400929B2

公开(公告)日：2013-03-19

申请号：US13116607

申请日：2011-05-26

Applicant: Vishnu Kant Varma ,  Wenwei Weng ,  Samer Salam ,  Lio Cheng

Inventor： Vishnu Kant Varma ,  Wenwei Weng ,  Samer Salam ,  Lio Cheng

IPC: G06F11/00 ,  H04J3/14 ,  H04J3/06 ,  H04L12/28

CPC classification number: H04L43/50 ,  H04L12/413 ,  H04L41/0213 ,  H04L43/106 ,  H04L43/12 ,  H04L45/60

Abstract: One embodiment is a source router that monitors the performance of an Ethernet network. The source router generates an Ethernet connectivity check request frame that includes a transmission timestamp, and transmits the Ethernet connectivity check request frame to a destination router. The source router receives a reply from the destination router that is transmitted in response to receiving the Ethernet connectivity check request frame and determines a round trip time between the source router and the destination router based on a time of receipt of the reply and the transmission timestamp.

Abstract translation: 一个实施例是监视以太网网络的性能的源路由器。 源路由器生成包含传输时间戳的以太网连接检查请求帧，并将以太网连接检查请求帧发送到目的路由器。 源路由器接收来自目的地路由器的响应于响应于接收到以太网连接性检查请求帧而被发送的应答，并且基于接收回复的时间和传输时间戳确定源路由器与目的地路由器之间的往返时间 。

公开(公告)号：US20120014261A1

公开(公告)日：2012-01-19

申请号：US12835777

申请日：2010-07-14

Applicant: Samer Salam ,  Ali Sajassi

Inventor： Samer Salam ,  Ali Sajassi

IPC: H04L12/26

CPC classification number: H04L43/10 ,  H04L43/026 ,  H04L43/0811

Abstract: 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.

Abstract translation: 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：US20110228679A1

公开(公告)日：2011-09-22

申请号：US13116607

申请日：2011-05-26

Applicant: Vishnu Kant Varma ,  Wenwei Weng ,  Samer Salam ,  Lio Cheng

Inventor： Vishnu Kant Varma ,  Wenwei Weng ,  Samer Salam ,  Lio Cheng

IPC: H04L12/26

CPC classification number: H04L43/50 ,  H04L12/413 ,  H04L41/0213 ,  H04L43/106 ,  H04L43/12 ,  H04L45/60

Abstract: One embodiment is a source router that monitors the performance of an Ethernet network. The source router generates an Ethernet connectivity check request frame that includes a transmission timestamp, and transmits the Ethernet connectivity check request frame to a destination router. The source router receives a reply from the destination router that is transmitted in response to receiving the Ethernet connectivity check request frame and determines a round trip time between the source router and the destination router based on a time of receipt of the reply and the transmission timestamp.

Abstract translation: 一个实施例是监视以太网网络的性能的源路由器。 源路由器生成包含传输时间戳的以太网连接检查请求帧，并将以太网连接检查请求帧发送到目的路由器。 源路由器接收来自目的地路由器的响应于响应于接收到以太网连接性检查请求帧而被发送的应答，并且基于接收回复的时间和传输时间戳确定源路由器与目的地路由器之间的往返时间 。