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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：US08199753B2
公开(公告)日：2012-06-12
申请号：US12478857
申请日：2009-06-05
申请人： Apurva Mehta , Kumar Mehta , Krishna Sankaran , Rajagopalan Subbiah , Ramanarayanan Ramakrishnan , Bin William Hong , Ananda Sathyanarayana
发明人： Apurva Mehta , Kumar Mehta , Krishna Sankaran , Rajagopalan Subbiah , Ramanarayanan Ramakrishnan , Bin William Hong , Ananda Sathyanarayana
CPC分类号： H04L45/00 , H04L12/4625 , H04L12/4633 , H04L12/4641 , H04L45/16 , H04L45/48 , H04L45/66
摘要： Methods, apparatus, and products are disclosed for forwarding frames in a computer network using shortest path bridging (‘SPB’). The network includes multiple bridges, and each edge bridge is assigned a unique service virtual local area network (‘VLAN’) identifier. One of the bridges receives a frame for transmission to a destination node. The received frame includes a service VLAN identifier for the ingress bridge through which the frame entered the network and a customer VLAN identifier. The one bridge identifies an SPB forwarding tree in dependence upon the service VLAN identifier. The SPB forwarding tree specifies a shortest route in the network from the ingress bridge through the one bridge to the other bridges in the network. The one bridge then forwards the received frame to the egress bridge without MAC-in-MAC encapsulation in dependence upon the SPB forwarding tree and the customer VLAN identifier.
摘要翻译： 公开了使用最短路径桥接（“SPB”）在计算机网络中转发帧的方法，装置和产品。 该网络包括多个网桥，每个边缘网桥被分配一个唯一的服务虚拟局域网（“VLAN”）标识符。 其中一个桥接收到用于传输到目标节点的帧。 接收到的帧包括帧进入网络的入口网桥的服务VLAN标识符和客户VLAN标识符。 一个桥接器根据服务VLAN标识符标识SPB转发树。 SPB转发树指定网络中从入口网桥通过一个网桥到网络中其他网桥的最短路由。 然后，一个桥将接收到的帧转发到出口网桥，而不依赖于SPB转发树和客户VLAN标识符的MAC-in-MAC封装。
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4.发明申请公开(公告)号：US20100309912A1
公开(公告)日：2010-12-09
申请号：US12478857
申请日：2009-06-05
申请人： Apurva Mehta , Kumar Mehta , Krishna Sankaran , Rajagopalan Subbiah , Ramanarayanan Ramakrishnan , Bin William Hong , Ananda Sathyanarayana
发明人： Apurva Mehta , Kumar Mehta , Krishna Sankaran , Rajagopalan Subbiah , Ramanarayanan Ramakrishnan , Bin William Hong , Ananda Sathyanarayana
IPC分类号： H04L12/56
CPC分类号： H04L45/00 , H04L12/4625 , H04L12/4633 , H04L12/4641 , H04L45/16 , H04L45/48 , H04L45/66
摘要： Methods, apparatus, and products are disclosed for forwarding frames in a computer network using shortest path bridging (‘SPB’). The network includes multiple bridges, and each edge bridge is assigned a unique service virtual local area network (‘VLAN’) identifier. One of the bridges receives a frame for transmission to a destination node. The received frame includes a service VLAN identifier for the ingress bridge through which the frame entered the network and a customer VLAN identifier. The one bridge identifies an SPB forwarding tree in dependence upon the service VLAN identifier. The SPB forwarding tree specifies a shortest route in the network from the ingress bridge through the one bridge to the other bridges in the network. The one bridge then forwards the received frame to the egress bridge without MAC-in-MAC encapsulation in dependence upon the SPB forwarding tree and the customer VLAN identifier.
摘要翻译： 公开了使用最短路径桥接（“SPB”）在计算机网络中转发帧的方法，装置和产品。 该网络包括多个网桥，每个边缘网桥被分配一个唯一的服务虚拟局域网（“VLAN”）标识符。 其中一个桥接收到用于传输到目标节点的帧。 接收到的帧包括帧进入网络的入口网桥的服务VLAN标识符和客户VLAN标识符。 一个桥接器根据服务VLAN标识符标识SPB转发树。 SPB转发树指定网络中从入口网桥通过一个网桥到网络中的其他网桥的最短路由。 然后，一个桥将接收到的帧转发到出口网桥，而不依赖于SPB转发树和客户VLAN标识符的MAC-in-MAC封装。
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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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6.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：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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8.发明授权Routing frames in a shortest path computer network for a multi-homed legacy bridge node 有权在多宿主遗留网桥节点的最短路径计算机网络中路由帧公开(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。
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9.发明授权Network path selection for multi-homed edges to ensure end-to-end resiliency 有权多归位边缘的网络路径选择，以确保端到端的弹性公开(公告)号：US08724456B1
公开(公告)日：2014-05-13
申请号：US12881999
申请日：2010-09-14
IPC分类号： G06F11/00
CPC分类号： G06F11/00
摘要： Techniques are described for selecting an alternate path for end-to-end service data traffic that traverses multi-homed routers that provide the service to customer networks. For example, as described herein, a router that is a member of a first multi-homing set connected to a layer two (L2) network with one of a plurality of first access links. The router advertises a status of one of the first access links to a second multi-homing set connected to the first multi-homing set with one or more core links. A core link database stores advertised status information for access links of the first and second multi-homing set. Upon a link failure, a path selector selects a core link to transport service data traffic and directs a switch module to switch to active a status a first access links that connects to a router in the first multi-homing set connected to the selected core link.
摘要翻译： 描述技术来选择用于通过向客户网络提供服务的多归属路由器的端到端服务数据业务的备用路径。 例如，如本文所述，路由器是与多个第一接入链路中的一个连接到第二层（L2）网络的第一多归属集合的成员。 路由器将具有一个第一接入链路的状态通告给具有一个或多个核心链路的连接到第一多归属集的第二多归属集。 核心链路数据库存储用于第一和第二多归属集合的接入链路的通告状态信息。 在链路故障时，路径选择器选择核心链路来传输服务数据流量并指示交换机模块切换到活动状态，连接到连接到所选核心链路的第一多归属集中的路由器的第一接入链路 。
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公开(公告)号：US08509248B2
公开(公告)日：2013-08-13
申请号：US12344644
申请日：2008-12-29
CPC分类号： H04L45/12 , H04L12/462 , H04L45/04 , H04L45/66
摘要： Methods, apparatus, and products for routing frames in a network using bridge identifiers, wherein the network includes a plurality of bridge nodes. At least one of the bridge nodes operates as an ingress bridge node through which frames are received into the network. At least one of the bridge nodes operates as an egress bridge node through which frames are transmitted out of the network. One of the bridge nodes receives, from the ingress bridge node, a frame for transmission to a destination node. The destination node connects to the network through the egress bridge node. The frame includes an ingress bridge identifier and an egress bridge identifier. The bridge that received the frame then routes the frame to the egress bridge node through which the destination node connects to the network in dependence upon the ingress bridge identifier and the egress bridge identifier included in the frame.
摘要翻译： 用于使用桥标识符在网络中路由帧的方法，装置和产品，其中所述网络包括多个网桥节点。 桥接节点中的至少一个作为进入网络的入口网桥节点运行。 至少一个桥接节点作为出口网桥节点运行，帧从网络中传出。 桥节点之一从入口网桥节点接收用于传输到目的地节点的帧。 目的节点通过出口网桥节点连接到网络。 帧包括入口网桥标识符和出口网桥标识符。 接收到帧的桥接器根据包含在帧中的入口网桥标识符和出口网桥标识符，将帧路由到目的节点通过其连接到网络的出口网桥节点。
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