公开(公告)号：US08804570B1

公开(公告)日：2014-08-12

申请号：US12971866

申请日：2010-12-17

申请人： Manish Gupta ,  Ramasamy Ramanathan ,  Sri Goli

发明人： Manish Gupta ,  Ramasamy Ramanathan ,  Sri Goli

IPC分类号： H04L12/28 ,  H04J3/14 ,  H04L12/54

CPC分类号： H04L45/02 ,  H04J3/14 ,  H04L12/56 ,  H04L45/507

摘要： A first provider edge (PE) device is configured to: receive a Label Distribution Protocol (LDP) MAC Flush message from a PE device via an input port; flush a routing table in response to the LDP MAC Flush message; determine whether the LDP MAC Flush message comprises a PE identifier corresponding to the PE device; generate a Topology Change Notification (TCN) message based on the LDP MAC Flush message when the LDP MAC Flush message comprises the PE identifier corresponding to the PE device; and output the TCN message.

摘要翻译： 第一提供商边缘（PE）设备被配置为：经由输入端口从PE设备接收标签分发协议（LDP）MAC刷新消息; 刷新路由表以响应LDP MAC Flush消息; 确定LDP MAC Flush消息是否包括与PE设备相对应的PE标识符; 当LDP MAC Flush消息包括与PE设备对应的PE标识符时，基于LDP MAC Flush消息生成拓扑变化通知（TCN）消息; 并输出TCN消息。

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。

公开(公告)号：US09100213B1

公开(公告)日：2015-08-04

申请号：US13156214

申请日：2011-06-08

申请人： Ramasamy Ramanathan ,  Pankaj Shukla ,  Sunesh Rustagi

发明人： Ramasamy Ramanathan ,  Pankaj Shukla ,  Sunesh Rustagi

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。

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。

公开(公告)号：US08787149B1

公开(公告)日：2014-07-22

申请号：US13405016

申请日：2012-02-24

申请人： Ramasamy Ramanathan ,  Deepak Ojha

发明人： Ramasamy Ramanathan ,  Deepak Ojha

IPC分类号： H04L12/28

CPC分类号： H04L45/58 ,  H04L45/245 ,  H04L45/66

摘要： In general, techniques are described for using a light-weight protocol to synchronize layer two (L2) addresses that identify routable traffic to multiple L3 devices, such as PE routers, that cooperatively employ an active-active redundancy configuration using a multi-chassis LAG to provide an L2 network with redundant connectivity. In one example, a network device establishes a multi-chassis LAG with a peer network device to provide redundant connectivity to a layer three (L3) network. A synchronization module of the network device receives a synchronization message that specifies an L2 address of the peer network device. When the network device receives an L2 packet data unit (PDU) from the L2 network, a routing instance of the network device routes an L3 packet encapsulated therein when the PDU has an L2 destination address that matches the L2 address of the peer network device.

摘要翻译： 一般来说，描述了使用轻量级协议来同步将可路由业务识别到多个L3设备（诸如PE路由器）的第二层（L2）地址的技术，这些设备协作地采用使用多机架LAG的主动 - 主动冗余配置 为L2网络提供冗余连接。 在一个示例中，网络设备与对等网络设备建立多机架LAG，以向第三层（L3）网络提供冗余连接。 网络设备的同步模块接收指定对等网络设备的L2地址的同步消息。 当网络设备从L2网络接收到L2分组数据单元（PDU）时，当PDU具有与对等网络设备的L2地址匹配的L2目的地址时，网络设备的路由实例将封装在其中的L3分组路由。