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公开(公告)号：US07787480B1
公开(公告)日：2010-08-31
申请号：US12397811
申请日：2009-03-04
申请人： Apurva Mehta , Ramasamy Ramanathan , Kumar Mehta , Sunesh Rustagi , Sanjiv Doshi , Shiva Shenoy
发明人： Apurva Mehta , Ramasamy Ramanathan , Kumar Mehta , Sunesh Rustagi , Sanjiv Doshi , Shiva Shenoy
IPC分类号： H04L12/56
CPC分类号： H04L12/465 , H04L45/00 , H04L45/66 , H04L45/72
摘要： Methods, apparatus, and products are disclosed for routing frames in a TRILL network using service VLAN identifiers by: receiving a frame from an ingress bridge node for transmission through the TRILL network to a destination node that connects to the TRILL network through an egress node, the received frame including a customer VLAN identifier, a service VLAN identifier uniquely assigned to the ingress bridge node, and a destination node address for the destination node, the received frame not having mac-in-mac encapsulation; adding, in dependence upon the service VLAN identifier and the destination node address, a TRILL header conforming to the TRILL protocol, the TRILL header including an ingress bridge nickname and an egress bridge nickname; and routing, to the egress bridge node through which the destination node connects to the network, the frame in dependence upon the ingress bridge nickname and the egress bridge nickname.
摘要翻译： 公开了用于使用服务VLAN标识符在TRILL网络中路由帧的方法，装置和产品：从入口网桥节点接收帧，以通过TRILL网络传输到通过出口节点连接到TRILL网络的目的地节点， 所接收的帧包括客户VLAN标识符，唯一地分配给入口网桥节点的服务VLAN标识符和目的地节点的目的地节点地址，所接收的帧不具有mac-in-mac封装; 根据服务VLAN标识符和目的地节点地址，添加符合TRILL协议的TRILL报头，TRILL报头包括入口网桥昵称和出口网桥昵称; 并且根据入口网桥昵称和出口网桥昵称路由到目的地节点通过其连接到网络的出口网桥节点。
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公开(公告)号：US20100226381A1
公开(公告)日：2010-09-09
申请号：US12397811
申请日：2009-03-04
申请人： Apurva Mehta , Ramasamy Ramanathan , Kumar Mehta , Sunesh Rustagi , Sanjiv Doshi , Shiva Shenoy
发明人： Apurva Mehta , Ramasamy Ramanathan , Kumar Mehta , Sunesh Rustagi , Sanjiv Doshi , Shiva Shenoy
IPC分类号： H04L12/56
CPC分类号： H04L12/465 , H04L45/00 , H04L45/66 , H04L45/72
摘要： Methods, apparatus, and products are disclosed for routing frames in a TRILL network using service VLAN identifiers by: receiving a frame from an ingress bridge node for transmission through the TRILL network to a destination node that connects to the TRILL network through an egress node, the received frame including a customer VLAN identifier, a service VLAN identifier uniquely assigned to the ingress bridge node, and a destination node address for the destination node, the received frame not having mac-in-mac encapsulation; adding, in dependence upon the service VLAN identifier and the destination node address, a TRILL header conforming to the TRILL protocol, the TRILL header including an ingress bridge nickname and an egress bridge nickname; and routing, to the egress bridge node through which the destination node connects to the network, the frame in dependence upon the ingress bridge nickname and the egress bridge nickname.
摘要翻译： 公开了用于使用服务VLAN标识符在TRILL网络中路由帧的方法，装置和产品：从入口网桥节点接收帧，以通过TRILL网络传输到通过出口节点连接到TRILL网络的目的地节点， 所接收的帧包括客户VLAN标识符，唯一地分配给入口网桥节点的服务VLAN标识符和目的地节点的目的地节点地址，所接收的帧不具有mac-in-mac封装; 根据服务VLAN标识符和目的地节点地址，添加符合TRILL协议的TRILL报头，TRILL报头包括入口网桥昵称和出口网桥昵称; 并且根据入口网桥昵称和出口网桥昵称路由到目的地节点通过其连接到网络的出口网桥节点。
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公开(公告)号：US08792501B1
公开(公告)日：2014-07-29
申请号：US13162157
申请日：2011-06-16
IPC分类号： H04L12/56
摘要： Techniques are described for forwarding packets in a VPLS using multi-homing PE routers configured in an “active-active” link topology. A router includes a control unit that forms a customer-facing multi-chassis link aggregation group (LAG) to include a plurality of active access links that couple the router and a second router to a multi-homed customer site associated with the VPLS domain. The control unit also forms a core-facing multi-chassis LAG within the VPLS domain to include a plurality of pseudowires that connect the router and other member routers of the core-facing LAG to a common remote router of the VPLS domain. The router receives layer two (L2) packets from the multi-homed customer site on one or more of the active access links and forwards the L2 packets to the remote router over one or more of the pseudowires using the core-facing multi-chassis LAG.
摘要翻译： 描述了使用以“主动 - 主动”链路拓扑结构配置的多归属PE路由器在VPLS中转发数据包的技术。 路由器包括形成面向客户的多机架链路聚合组（LAG）的控制单元，以包括将路由器和第二路由器耦合到与VPLS域相关联的多归属客户站点的多个活动接入链路。 控制单元还在VPLS域内形成一个面向内核的多机箱LAG，以包括将路由器和面向核心的LAG的其他成员路由器连接到VPLS域的公共远程路由器的多条伪线。 路由器在一个或多个主动接入链路上从多归属客户站点接收第二层（L2）数据包，并使用面向核心的多机架LAG将一个或多个伪线路将L2数据包转发到远程路由器 。
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4.发明授权公开(公告)号：US07995483B1
公开(公告)日：2011-08-09
申请号：US12396138
申请日：2009-03-02
申请人： Roopa Bayar , Pankaj Shukla , Apurva Mehta , Sunesh Rustagi
发明人： Roopa Bayar , Pankaj Shukla , Apurva Mehta , Sunesh Rustagi
IPC分类号： H04J1/16
CPC分类号： H04L41/0893 , H04L43/0811 , H04L43/50 , H04L67/14
摘要： In general, techniques are described for simultaneously testing connectivity to same or different remote maintenance endpoints of the same maintenance association. Specifically, a network device may include a control unit that simultaneously executes both a first and a second maintenance session. The control unit maintains first and second session identifiers that uniquely identifies the first and second maintenance sessions. The control unit receives via the first maintenance session input that specifies parameters for a maintenance message and generates the maintenance message in accordance with the parameters such that the maintenance message includes the first session identifier. The network device also includes an interface card that forwards the maintenance message to another network device in order to determine connectivity between these two network devices. By generating the maintenance message to include the first session identifier, the control unit may upon receiving a response to the maintenance message resolve to which of the maintenance session the response corresponds.
摘要翻译： 通常，描述了同时测试与相同维护关联的相同或不同的远程维护端点的连接的技术。 具体地，网络设备可以包括同时执行第一和第二维护会话的控制单元。 控制单元维护唯一地标识第一和第二维护会话的第一和第二会话标识符。 控制单元通过第一维护会话输入接收指定维护消息的参数，并根据参数生成维护消息，使得维护消息包括第一会话标识符。 网络设备还包括将维护消息转发到另一网络设备以便确定这两个网络设备之间的连接性的接口卡。 通过生成包括第一会话标识符的维护消息，控制单元可以在接收到对维护消息的响应后，解析响应对应于哪个维护会话。
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公开(公告)号：US07876710B2
公开(公告)日：2011-01-25
申请号：US12182273
申请日：2008-07-30
IPC分类号： H04L12/28
CPC分类号： H04L12/4625 , H04L45/22 , H04L45/28 , H04L45/48 , H04L45/66
摘要： A method may include receiving a packet including a destination address, identifying a destination address entry based on the destination address, the destination address entry including an address identifier, comparing the address identifier to an event identifier, determining whether an event occurred based on the comparison, and forwarding the packet on an alternate path if it is determined that the event occurred.
摘要翻译： 方法可以包括接收包含目的地地址的分组，基于目的地地址识别目的地地址条目，目的地地址条目包括地址标识符，将地址标识符与事件标识符进行比较，基于比较确定事件是否发生 并且如果确定事件发生，则将数据包转发到备用路径上。
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公开(公告)号：US20100027543A1
公开(公告)日：2010-02-04
申请号：US12182273
申请日：2008-07-30
IPC分类号： H04L12/56
CPC分类号： H04L12/4625 , H04L45/22 , H04L45/28 , H04L45/48 , H04L45/66
摘要： A method may include receiving a packet including a destination address, identifying a destination address entry based on the destination address, the destination address entry including an address identifier, comparing the address identifier to an event identifier, determining whether an event occurred based on the comparison, and forwarding the packet on an alternate path if it is determined that the event occurred.
摘要翻译： 方法可以包括接收包含目的地地址的分组，基于目的地地址识别目的地地址条目，目的地地址条目包括地址标识符，将地址标识符与事件标识符进行比较，基于比较确定事件是否发生 并且如果确定事件发生，则将数据包转发到备用路径上。
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公开(公告)号：US09100213B1
公开(公告)日：2015-08-04
申请号：US13156214
申请日：2011-06-08
IPC分类号： H04L12/46 , H04L12/54 , H04L29/12 , H04L12/721
CPC分类号： H04L12/4641 , H04L12/413 , H04L12/4633 , H04L12/6418 , H04L29/12839 , H04L45/66 , H04L49/00 , H04L61/6022 , H04L2012/4629
摘要： In general, techniques are described for synchronizing gateway layer two (L2) addresses of routers that cooperate to provide interconnectivity to multiple, separate L2 networks. In one example, a router includes a VPLS module that establishes a VPLS instance to provide L2 connectivity between a local L2 network for the router and a remote L2 network for the router, wherein the router is addressable by a gateway L2 address. A synchronization module receives a gateway L2 address synchronization message that includes an additional gateway L2 address for an additional router. An integrated routing and bridging (IRB) interface of the router receives a L2 PDU from the local L2 network on an attachment circuit for the VPLS instance attached to the interface card, and a forwarding unit routes a layer three (L3) packet carried by the PDU when the PDU has an L2 destination address that matches the additional gateway L2 address.
摘要翻译： 通常，描述了用于同步协作以提供与多个单独的L2网络的互连的路由器的网关层二（L2）地址的技术。 在一个示例中，路由器包括VPLS模块，其建立VPLS实例以在路由器的本地L2网络和路由器的远程L2网络之间提供L2连接，其中路由器可由网关L2地址寻址。 同步模块接收网关L2地址同步消息，其包括附加路由器的附加网关L2地址。 路由器的集成路由和桥接（IRB）接口在连接到接口卡的VPLS实例的附件电路上从本地L2网络接收L2 PDU，并且转发单元将由 PDU当PDU具有与附加网关L2地址匹配的L2目的地地址时。
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8.发明申请AVOIDING DATA TRAFFIC LOSS IN AN ETHERNET RING MULTIHOMED, IN AN ACTIVE-STANDBY MANNER, TO A VIRTUAL PRIVATE LAN SERVICE TRANSPORT NETWORK 有权避免在以太网环路中的数据流量损失，在主动式待机模式下，虚拟专用LAN服务运输网络公开(公告)号：US20140078886A1
公开(公告)日：2014-03-20
申请号：US13618900
申请日：2012-09-14
申请人： Pankaj Shukla , Sunesh Rustagi
发明人： Pankaj Shukla , Sunesh Rustagi
IPC分类号： H04L12/26
CPC分类号： H04L45/22 , H04L12/437 , H04L12/4641 , H04L45/04 , H04L45/28 , H04L45/50 , H04L45/66
摘要： Data traffic loss in a an Ethernet Ring that is multihomed, in an active-standby manner, to a VPLS transport network (such as a Border Gateway Protocol (BGP) multihomed Ethernet Ring, an MC-LAG multihomed Ethernet Ring, or some other type of active-standby multihomed Ethernet Ring, etc.) (ring) is avoided. The exemplary multihomed ring running Ethernet Ring Protection (ERP) protocol includes a Ring Protection Link (RPL), a first node and a second node linked with a designated border router and a standby border router of the network, respectively. The data traffic loss in the multihomed ring is avoided by (i) receiving an indication that the link between the first node and the designated border router has failed; and (ii) invoking, responsive to the received indication, an ERP Media Access Control (MAC)-flush in the ring, even in the absence of a failed link in the ring and without activating the specified RPL. The ERP MAC-flush causes subsequent data packets from each of the plurality of nodes in the ring to be forwarded to the standby border router via the second node.
摘要翻译： 以主动备用方式多呼叫到VPLS传输网络（例如边界网关协议（BGP）多宿主以太网环，MC-LAG多宿主以太网环或其他类型的以太网环路中的数据流量丢失 主动待机多宿主以太网环等）（环）。 运行以太环网保护（ERP）协议的示例性多主机环路分别包括与指定的边界路由器和网络的备用边界路由器链接的环保护链路（RPL），第一节点和第二节点。 通过（i）接收到第一节点和指定的边界路由器之间的链路已经失败的指示来避免多主环中的数据业务丢失; 以及（ii）响应于所接收的指示，调用在环中的ERP媒体访问控制（MAC）冲洗，即使在环中没有故障链路并且不激活指定的RPL。 ERP MAC刷新使来自环中的多个节点的后续数据分组经由第二节点转发到备用边界路由器。
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9.发明授权Enhanced service status detection and fault isolation within layer two networks 有权在第二层网络中增强服务状态检测和故障隔离公开(公告)号：US08670299B1
公开(公告)日：2014-03-11
申请号：US12981221
申请日：2010-12-29
申请人： Pankaj Shukla , Sunesh Rustagi , Vikram Bobade
发明人： Pankaj Shukla , Sunesh Rustagi , Vikram Bobade
IPC分类号： G01R31/08
CPC分类号： H04L41/12 , H04L43/0811
摘要： An example method includes monitoring a layer two network with a first network device that operates within the network. The method also includes discovering a second network device that operates within the network by receiving an extended continuity check message (CCM) transmitted from the second network device. The extended CCM transmitted from the second network device indicates to other network devices that a service instance is available on the second network device, and includes an indication of one or more network devices from which the second network device has received CCMs for the service instance. The method further includes determining that bidirectional connectivity exists between the first network device and the second network device when the indication includes the first network device as one of the network devices from which the second network device has received CCMs for the service instance.
摘要翻译： 示例性方法包括使用在网络内操作的第一网络设备监视第二层网络。 该方法还包括通过接收从第二网络设备发送的扩展连续性检查消息（CCM）来发现在网络内工作的第二网络设备。 从第二网络设备发送的扩展CCM向其他网络设备指示服务实例在第二网络设备上可用，并且包括一个或多个网络设备的指示，第二网络设备从该网络设备接收到用于服务实例的CCM。 所述方法还包括当所述指示包括所述第一网络设备作为所述第二网络设备已从其接收到所述服务实例的CCM的网络设备之一时，确定所述第一网络设备和所述第二网络设备之间存在双向连接。
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公开(公告)号：US08175008B1
公开(公告)日：2012-05-08
申请号：US12140716
申请日：2008-06-17
申请人： Sunesh Rustagi , Roopa Bayar
发明人： Sunesh Rustagi , Roopa Bayar
IPC分类号： H04L12/24
CPC分类号： H04L43/10 , H04L41/0806 , H04L43/0811
摘要： A device may include a maintenance association endpoint configured to select a maintenance association endpoint identifier, transmit the maintenance association endpoint identifier to one or more other maintenance association endpoints, and automatically assign the maintenance association endpoint identifier to the maintenance association endpoint if it is determined that the maintenance association endpoint identifier is available based on a conflict message received from one of the one more other maintenance association endpoints.
摘要翻译： 设备可以包括维护关联端点，其被配置为选择维护关联端点标识符，将维护关联端点标识符发送到一个或多个其他维护关联端点，并且如果确定维护关联端点标识符被确定为 维护关联端点标识符可以基于从另一个维护关联端点之一接收到的冲突消息来获得。
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