公开(公告)号：US09100198B2

公开(公告)日：2015-08-04

申请号：US13853240

申请日：2013-03-29

申请人： Sri Sairam Goli ,  CunZhi Lu ,  Ramanarayanan Ramakrishnan ,  Ramasamy Ramanathan

发明人： Sri Sairam Goli ,  CunZhi Lu ,  Ramanarayanan Ramakrishnan ,  Ramasamy Ramanathan

IPC分类号： H04L12/741 ,  H04L12/18 ,  H04L12/46 ,  H04L12/721 ,  H04L12/931

CPC分类号： H04L12/18 ,  H04L12/4625 ,  H04L12/4633 ,  H04L12/4641 ,  H04L45/66 ,  H04L49/354

摘要： A provider edge bridge in a service provider network receives multiple media access control (MAC) Registration Protocol (MMRP) registration messages from customer networks via tunnels. The provider edge bridge snoops the MMRP registration messages to obtain multicast MAC addresses from the registration messages, and tunnels the MMRP registration messages toward one or more other bridges. The provider edge bridge constructs multicast forwarding tables based on the multicast addresses obtained from snooping the MMRP registrations, and uses the multicast forwarding tables for forwarding data units from the provider edge bridge towards destinations.

摘要翻译： 服务提供商网络中的提供商边缘网桥通过隧道从客户网络接收多个媒体访问控制（MAC）注册协议（MMRP）注册消息。 提供商边缘网络监听MMRP注册消息，从注册消息获取组播MAC地址，并将MMRP注册消息通向一个或多个其他网桥。 提供商边缘网桥根据从监听MMRP注册获取的组播地址构建组播转发表，并使用组播转发表将数据单元从提供商边缘桥转发到目的地。

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。

公开(公告)号：US20130215892A1

公开(公告)日：2013-08-22

申请号：US13853240

申请日：2013-03-29

申请人： Sri Sairam GOLI ,  CunZhi Lu ,  Ramanarayanan Ramakrishnan ,  Ramasamy Ramanathan

发明人： Sri Sairam GOLI ,  CunZhi Lu ,  Ramanarayanan Ramakrishnan ,  Ramasamy Ramanathan

IPC分类号： H04L12/18

CPC分类号： H04L12/18 ,  H04L12/4625 ,  H04L12/4633 ,  H04L12/4641 ,  H04L45/66 ,  H04L49/354

摘要： A provider edge bridge in a service provider network receives multiple media access control (MAC) Registration Protocol (MMRP) registration messages from customer networks via tunnels. The provider edge bridge snoops the MMRP registration messages to obtain multicast MAC addresses from the registration messages, and tunnels the MMRP registration messages toward one or more other bridges. The provider edge bridge constructs multicast forwarding tables based on the multicast addresses obtained from snooping the MMRP registrations, and uses the multicast forwarding tables for forwarding data units from the provider edge bridge towards destinations.

摘要翻译： 服务提供商网络中的提供商边缘网桥通过隧道从客户网络接收多个媒体访问控制（MAC）注册协议（MMRP）注册消息。 提供商边缘网络监听MMRP注册消息，从注册消息获取组播MAC地址，并将MMRP注册消息通向一个或多个其他网桥。 提供商边缘网桥根据从监听MMRP注册获取的组播地址构建组播转发表，并使用组播转发表将数据单元从提供商边缘桥转发到目的地。

公开(公告)号：US08467316B1

公开(公告)日：2013-06-18

申请号：US12980731

申请日：2010-12-29

申请人： Sri Goli ,  Ramasamy Ramanathan ,  Ramanarayanan Ramakrishnan ,  Sanjiv Doshi ,  Deepak Ojha ,  Jagadish Grandhi

发明人： Sri Goli ,  Ramasamy Ramanathan ,  Ramanarayanan Ramakrishnan ,  Sanjiv Doshi ,  Deepak Ojha ,  Jagadish Grandhi

IPC分类号： H04L12/28

CPC分类号： H04L12/4625

摘要： In general, techniques are described for enhanced learning in layer two (L2) networks. A first network device of the intermediate network comprising a control unit and an interface may implement these techniques. The control unit executes a loop-prevention protocol (LPP) that determines a bridge identifier associated with a second network device of the intermediate network, where the first and second network devices each couple to a first network. The LPP selects the second network device as a root bridge and detects a topology change that splits the first network into sub-networks. The interface then outputs a message to direct remaining network devices of the intermediate network to clear L2 address information learned when forwarding L2 communications. The message includes the bridge identifier determined by the loop-prevention protocol as the root bridge and directs these remaining network devices to clear only the L2 addresses learned from this bridge identifier.

摘要翻译： 通常，描述了用于在第二层（L2）网络中增强学习的技术。 包括控制单元和接口的中间网络的第一网络设备可以实现这些技术。 所述控制单元执行环路防护协议（LPP），所述环路防护协议（LPP）确定与所述中间网络的第二网络设备相关联的网桥标识符，其中所述第一和第二网络设备每个耦合到第一网络。 LPP选择第二个网络设备作为根桥，并检测将第一个网络划分为子网络的拓扑变化。 然后，接口输出消息，引导中间网络的剩余网络设备清除在转发L2通信时学到的L2地址信息。 该消息包括由循环防范协议确定的桥接标识符作为根网桥，并指示这些剩余的网络设备仅清除从该桥标识符学到的L2地址。

公开(公告)号：US08125928B2

公开(公告)日：2012-02-28

申请号：US12508949

申请日：2009-07-24

申请人： Apurva Mehta ,  Kumar Mehta ,  Ramasamy Ramanathan ,  Krishna Sankaran ,  Ramanarayanan Ramakrishnan ,  Shiva Shenoy ,  Gopi Krishna

发明人： Apurva Mehta ,  Kumar Mehta ,  Ramasamy Ramanathan ,  Krishna Sankaran ,  Ramanarayanan Ramakrishnan ,  Shiva Shenoy ,  Gopi Krishna

IPC分类号： H04L12/28

CPC分类号： H04L45/24 ,  H04L12/4625 ,  H04L45/04 ,  H04L45/245 ,  H04L45/66 ,  H04L49/351 ,  Y02D50/30

摘要： Methods, apparatus, and products for routing frames in a shortest path computer network for a multi-homed legacy bridge, wherein the network includes a plurality of bridges. At least two of the plurality of bridges operate as edge bridges through which the frames ingress and egress the network. A first edge bridge identifies a legacy bridge nickname for a legacy bridge connected to the network through the first edge bridge and a second edge bridge using active-active link aggregation. The first bridge receives a frame from the legacy bridge and determines, in dependence upon the frame's destination node address, an egress bridge nickname for a third bridge through which a destination node connects to the network. The first bridge then adds the legacy bridge nickname and the egress bridge nickname to the frame and routes the frame to the third bridge in dependence upon the egress bridge nickname.

摘要翻译： 用于在用于多宿主遗留桥的最短路径计算机网络中路由帧的方法，装置和产品，其中所述网络包括多个桥。 所述多个网桥中的至少两个桥作为边缘网桥，所述帧通过所述边缘网桥进入和离开所述网络。 第一个边缘网桥为通过第一个边缘网桥连接到网络的传统网桥和使用主动 - 主动链路聚合的第二个边缘网桥标识传统网桥昵称。 第一桥接器从传统桥接收帧，并根据帧的目的地节点地址确定目的节点通过其连接到网络的第三桥的出口网桥昵称。 然后，第一个桥接器将遗留桥昵称和出口桥昵称添加到帧中，并根据出口网桥昵称将帧路由到第三桥。