公开(公告)号：US08842577B2

公开(公告)日：2014-09-23

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： H04L12/28

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：US08839023B2

公开(公告)日：2014-09-16

申请号：US12932947

申请日：2011-03-10

申请人： Norman Finn ,  Samer Salam ,  Ali Sajassi

发明人： Norman Finn ,  Samer Salam ,  Ali Sajassi

IPC分类号： G06F11/00 ,  H04L12/713 ,  H04L12/709 ,  H04L12/751

CPC分类号： H04L45/586 ,  H04L45/026 ,  H04L45/245 ,  Y02D50/30

摘要： In one embodiment, a method includes receiving at a network device, a packet from a component in a virtual network device, the packet transmitted across a link aggregation bundle connecting the virtual network device to the network device and indicating if the component is a master component in the virtual network device, and determining if an error exists in operation of the component as the master component or a slave component. An apparatus for assigning services to physical links in an aggregated link bundle is also disclosed.

摘要翻译： 在一个实施例中，一种方法包括在网络设备处接收来自虚拟网络设备中的组件的分组，所述分组通过连接所述虚拟网络设备到所述网络设备的链路聚合束传输并指示所述组件是否为主组件 在虚拟网络设备中，并且确定作为主组件或从组件的组件的操作中是否存在错误。 还公开了一种用于向聚合链路束中的物理链路分配业务的装置。

公开(公告)号：US08724449B2

公开(公告)日：2014-05-13

申请号：US12456100

申请日：2009-06-10

申请人： Samer Salam ,  Ali Sajassi

发明人： Samer Salam ,  Ali Sajassi

IPC分类号： H04L12/28 ,  H04L12/56

CPC分类号： H04L45/28 ,  H04L12/437 ,  H04L12/4641 ,  H04L45/50 ,  H04L45/68

摘要： 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.

摘要翻译： 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：US08588081B2

公开(公告)日：2013-11-19

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： H04L1/00 ,  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：US20120233492A1

公开(公告)日：2012-09-13

申请号：US12932947

申请日：2011-03-10

申请人： Norman Finn ,  Samer Salam ,  Ali Sajassi

发明人： Norman Finn ,  Samer Salam ,  Ali Sajassi

IPC分类号： G06F11/20 ,  G06F11/07 ,  H04L12/28

CPC分类号： H04L45/586 ,  H04L45/026 ,  H04L45/245 ,  Y02D50/30

摘要： In one embodiment, a method includes receiving at a network device, a packet from a component in a virtual network device, the packet transmitted across a link aggregation bundle connecting the virtual network device to the network device and indicating if the component is a master component in the virtual network device, and determining if an error exists in operation of the component as the master component or a slave component. An apparatus for assigning services to physical links in an aggregated link bundle is also disclosed.

摘要翻译： 在一个实施例中，一种方法包括在网络设备处接收来自虚拟网络设备中的组件的分组，所述分组通过连接所述虚拟网络设备到所述网络设备的链路聚合束传输并指示所述组件是否为主组件 在虚拟网络设备中，并且确定作为主组件或从组件的组件的操作中是否存在错误。 还公开了一种用于向聚合链路束中的物理链路分配业务的装置。

公开(公告)号：US08077709B2

公开(公告)日：2011-12-13

申请号：US11857711

申请日：2007-09-19

申请人： Dezhong Cai ,  Ali Sajassi ,  Roberto Kobo

发明人： Dezhong Cai ,  Ali Sajassi ,  Roberto Kobo

IPC分类号： H04L12/28 ,  H04L12/56 ,  H04L12/66

CPC分类号： H04L45/00 ,  H04L12/4641 ,  H04L45/48 ,  H04L45/50 ,  H04L45/66

摘要： In one embodiment, a method includes receiving configuration data at a particular node of a first set of multiple nodes. The configuration data includes data that indicates a particular zero or more instances for which the particular node is primary among multiple virtual local area network (VLAN) instances to be forwarded. It is determined whether a VLAN indicated in a data packet received at the particular node is included in the particular instances for which the particular node is primary. If so, then the data packet is forwarded. In another embodiment, multiple nodes are configured to perform as a single virtual node, and the single virtual node is configured to forward data packets for the multiple VLAN.

摘要翻译： 在一个实施例中，一种方法包括在第一组多个节点的特定节点处接收配置数据。 配置数据包括指示要转发的多个虚拟局域网（VLAN）实例中特定节点为主要特定零个或多个实例的数据。 确定在特定节点处接收到的数据分组中指示的VLAN是否包括在特定节点是主节点的特定实例中。 如果是，则转发数据包。 在另一个实施例中，多个节点被配置为执行单个虚拟节点，并且单个虚拟节点被配置为转发用于多个VLAN的数据分组。

公开(公告)号：US07855950B2

公开(公告)日：2010-12-21

申请号：US11296149

申请日：2005-12-07

申请人： John M. Zwiebel ,  Ali Sajassi ,  Dino Farinacci ,  Daniel Alvarez

发明人： John M. Zwiebel ,  Ali Sajassi ,  Dino Farinacci ,  Daniel Alvarez

IPC分类号： G01R31/08 ,  H04L12/28 ,  H04H20/71 ,  G06F15/16

CPC分类号： H04L45/00 ,  H04L12/1836 ,  H04L12/185 ,  H04L45/16 ,  H04L45/48 ,  H04L45/50

摘要： A mechanism that provides congruent forwarding paths for unicast and multicast data traffic over a service provider core network includes issuing, by a receiver edge node, a request to join a multicast tree structure. A unicast path from the receiver edge node to a source node of the provider network is then established using a special message that contains an identifier. The identifier allows the unicast path through the core network to be aligned with the multicast tree structure. 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.

摘要翻译： 通过服务提供商核心网络为单播和组播数据流量提供一致的转发路径的机制包括由接收者边缘节点发出加入多播树结构的请求。 然后使用包含标识符的特殊消息来建立从接收器边缘节点到提供商网络的源节点的单播路径。 标识符允许通过核心网络的单播路径与多播树结构对齐。 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。

公开(公告)号：US07839800B2

公开(公告)日：2010-11-23

申请号：US12218169

申请日：2008-07-11

申请人： Norman W. Finn ,  Francois E. Tallet ,  Ali Sajassi

发明人： Norman W. Finn ,  Francois E. Tallet ,  Ali Sajassi

IPC分类号： H04L12/28

CPC分类号： H04L12/4662 ,  H04L12/2878 ,  H04L12/4687 ,  H04L45/48 ,  H04L45/66

摘要： In one embodiment, a method associated with a multiple I-service registration protocol (MIRP) includes receiving into an 802.1ah I-component an MVRP TCN from an 802.1ad component. The TCN may be received, for example, from an 802.1ad bridge. The TCN may identify an affected service using an S-VID. Therefore, the example method may include identifying the S-VID specified by the TCN. The method may also include identifying I-SIDs related to the S-VID. The I-SIDs may be identified by consulting an S-VID to I-SID translation table associated with the 802.1ah I-component. The method may also include providing an 802.1ah MIRP PDU to another 802.1ah component. The MIRP PDU may be based on the MVRP TCN and on the I-SID.

摘要翻译： 在一个实施例中，与多个I服务注册协议（MIRP）相关联的方法包括从802.1ad组件向802.1ah I组件接收MVRP TCN。 TCN可以例如从802.1ad桥接收。 TCN可以使用S-VID来识别受影响的服务。 因此，示例性方法可以包括识别由TCN指定的S-VID。 该方法还可以包括识别与S-VID相关的I-SID。 可以通过咨询与802.1ah I组件相关联的S-VID到I-SID转换表来识别I-SID。 该方法还可以包括向另一个802.1ah组件提供802.1ah MIRP PDU。 MIRP PDU可以基于MVRP TCN和I-SID。

公开(公告)号：US07715310B1

公开(公告)日：2010-05-11

申请号：US10857716

申请日：2004-05-28

申请人： Ali Sajassi ,  Eric Voit

发明人： Ali Sajassi ,  Eric Voit

IPC分类号： H04L1/00 ,  H04L12/26 ,  G06F15/173

CPC分类号： H04L1/22 ,  H04L41/0659

摘要： Redundancy for Virtual Private Network (VPN) service with an Ethernet access network is provided by a full-mesh of dedicated pseudowires connected among the network-facing provider edge (n-PE) devices, each of which is associated with the same Ethernet access network. A provider Bridge Protocol Data Unit (BPDU) generated by a provider bridge node in the Ethernet access network and received at an input interface of one n-PE device is relayed (without being processed) to all other n-PEs associated with that access network over the full-mesh of dedicated pseudowires. 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.

摘要翻译： 使用以太网接入网络进行虚拟专用网（VPN）业务的冗余由面向网络的提供商边缘（n-PE）设备之间连接的全网状专用伪线提供，每个专用网络与相同的以太网接入网络 。 由以太网接入网络中的提供商网桥节点生成并在一个n-PE设备的输入接口处接收的提供商桥接协议数据单元（BPDU）被中继（而不被处理）到与该接入网络相关联的所有其他n-PE 超过专用伪线的全网格。 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。

公开(公告)号：US07697534B1

公开(公告)日：2010-04-13

申请号：US12148340

申请日：2008-04-18

申请人： Ashok Narayanan ,  Richard Bradford ,  George Swallow ,  Ali Sajassi ,  Samer Salam

发明人： Ashok Narayanan ,  Richard Bradford ,  George Swallow ,  Ali Sajassi ,  Samer Salam

IPC分类号： H04L12/56

CPC分类号： H04L12/4633 ,  H04L12/4625 ,  H04L12/4658 ,  H04L12/4662 ,  H04L45/68

摘要： In one embodiment, a method generally includes identifying at a local Virtual Private LAN Service Provider Edge (VPLS PE) device whether remote VPLS PE devices are configured for operation as a Provider Backbone Bridge (PBB), negotiating pseudowire connections with the remote VPLS PE devices based on identification of the remote VPLS PE device configuration, receiving a frame destined for one of the remote VPLS PE devices, and transmitting the frame in a format compatible with the remote VPLS PE device. The local VPLS PE is configured for operation as a PBB and at least one of the remote VPLS PE devices is not configured for operation as a PBB. An apparatus for use in mixed mode VPLS network is also disclosed.

摘要翻译： 在一个实施例中，一种方法通常包括在本地虚拟专用LAN服务提供商边缘（VPLS PE）设备处识别远端VPLS PE设备是否配置为作为提供商骨干桥（PBB）进行操作，与远程VPLS PE设备协商伪线连接 基于远程VPLS PE设备配置的识别，接收目的地为远程VPLS PE设备之一的帧，并以与远程VPLS PE设备兼容的格式发送帧。 本地VPLS PE配置为PBB操作，至少有一个远程VPLS PE设备未配置为作为PBB操作。 还公开了一种用于混合模式VPLS网络的装置。