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21.发明申请INTERNAL MAINTENANCE ASSOCIATION END POINT (MEP) FOR SHARING STATE INFORMATION 审中-公开内部维护协会终点（MEP）用于共享信息公开(公告)号：US20090282291A1
公开(公告)日：2009-11-12
申请号：US12262200
申请日：2008-10-31
IPC分类号： G06F11/22
CPC分类号： H04L43/0811 , H04L49/351
摘要： A network node includes a central processor card and a plurality of line cards. Each line card generates a maintenance association end point (MEP) entity that can respond to connectivity fault management (CFM) frames. The MEP entity on each line card periodically generates and transmits a multicast connectivity check message (CCM) to the other line cards in the network node. The CCM includes a card-information TLV and, optionally, a trunk-status TLV. Card-information TLVs include the slot number and card type of the transmitting line card. Trunk-status TLVs include the trunk state of each trunk supported by the transmitting line card. The line cards of the node consider a given line card to be down when three consecutive CCMs from that line card are missed. In response to recognizing a down line card, the other line cards can initiate an action, such as determine the trunks supported by the down line card and trigger a trunk switchover.
摘要翻译： 网络节点包括中央处理器卡和多个线卡。 每个线卡产生可以响应连接故障管理（CFM）帧的维护关联端点（MEP）实体。 每个线路卡上的MEP实体周期性地生成并向网络节点中的其他线路卡发送多播连接性检查消息（CCM）。 CCM包括卡信息TLV和可选的中继状态TLV。 卡信息TLV包括发送线卡的插槽号和卡类型。 中继状态TLV包括由发送线路卡支持的每个中继线的中继状态。 节点的线路卡考虑到给定的线卡在从该线路卡丢失三个连续的CCM时将被关闭。 响应于识别下线卡，其他线卡可以发起动作，例如确定由下行卡支持的中继线并触发中继线切换。
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22.发明授权Architecture for virtualization and distribution of routing information used in a transport network 有权用于传输网络中使用的路由信息的虚拟化和分发的架构公开(公告)号：US09413637B2
公开(公告)日：2016-08-09
申请号：US13656862
申请日：2012-10-22
IPC分类号： H04L12/761 , H04L12/751 , H04L12/715 , H04L12/721 , H04L12/753
摘要： A method, apparatus and computer program product for distribution of routing information used in a transport network is presented. In a transport network having a plurality of edge devices and core devices, a main instance of a protocol is used for shortest path and tree computation. A multicast tree is defined per Virtual Services Network (VSN) to distribute Link State Data Base (LSDB) updates that only apply to members of said VSN. Multicast trees are built using a secondary instance of the control protocol LSDB and wherein each VSN multicast tree represents a separate instance of the secondary instance of the control protocol LSD. LSDB updates are distributed that only apply to members of the VSN using the multicast tree for the VSN.
摘要翻译： 提出了一种用于分发在传输网络中使用的路由信息的方法，装置和计算机程序产品。 在具有多个边缘设备和核心设备的传输网络中，协议的主要实例用于最短路径和树计算。 每个虚拟服务网络（VSN）定义多播树，以分发仅适用于所述VSN的成员的链路状态数据库（LSDB）更新。 使用控制协议LSDB的辅助实例构建组播树，其中每个VSN组播树表示控制协议LSD的辅助实例的单独实例。 分布式LSDB更新仅适用于使用VSN的组播树的VSN成员。
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公开(公告)号：US09300540B2
公开(公告)日：2016-03-29
申请号：US13271421
申请日：2011-10-12
IPC分类号： H04L12/28 , H04L12/56 , G01R31/08 , G06F11/00 , G08C15/00 , H04J1/16 , H04J3/14 , H04L1/00 , H04L12/26 , H04L12/24
摘要： A Shortest Path Bridging (SPB) network provides a multicast traceroute using network identifiers such as IP addresses for the source and destination (multicast group). The network identifiers, which are based on layer 3 (IP) designations of the traced multicast group, are mapped to a network identifier of the multicast group (corresponding to a layer 2, or MAC address) and an associated Virtual Local Area Network (VLAN) which is used to transport the packets belonging to the multicast flow. Therefore, an operator issuing the traceroute command need not be familiar with the layer 2 concepts of the network, but rather need only supply the layer 3 (IP address) designations of the concerned entities.
摘要翻译： 最短路径桥接（SPB）网络使用诸如源和目的地（组播组）的IP地址等网络标识符来提供组播跟踪路由。 基于跟踪的组播组的第3层（IP）指定的网络标识符被映射到组播组的网络标识符（对应于第2层或MAC地址）和相关联的虚拟局域网（VLAN） ），用于传输属于多播流的数据包。 因此，发布traceroute命令的运营商不需要熟悉网络的第2层概念，而只需要提供相关实体的第3层（IP地址）名称。
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公开(公告)号：US09088506B2
公开(公告)日：2015-07-21
申请号：US13610321
申请日：2012-09-11
IPC分类号： G06F15/173 , H04L12/931 , H04L12/26
摘要： A mirroring configuration employs an alternate usage of an existing messaging protocol and mechanism for propagating mirroring control for remote mirroring of data streams. A source routing entity, i.e. a router or switch through which the mirrored stream passes, identifies the stream as available for monitoring. The enabled stream propagates from a source network device, typically from a router port, to a mirroring destination in addition to the addressed destination. A stream identifier emulates an identifier from an alternate usage, such as a multicast group identifier for a multicast protocol, and activates mirroring by inserting the stream identifier in publish and join messages of the multicast protocol.
摘要翻译： 镜像配置采用现有消息协议和机制的替代使用，用于传播用于数据流远程镜像的镜像控制。 源路由实体，即镜像流通过的路由器或交换机将该流标识为可用于监视。 启用的流从源网络设备（通常从路由器端口）传播到除了寻址的目的地之外的镜像目的地。 流标识符模拟来自替代使用的标识符，例如多播协议的多播组标识符，并且通过在多播协议的发布和加入消息中插入流标识符来激活镜像。
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25.发明授权Usage of masked BMAC addresses in a provider backbone bridged (PBB) network 有权在提供商骨干桥接（PBB）网络中使用掩蔽的BMAC地址公开(公告)号：US08787377B2
公开(公告)日：2014-07-22
申请号：US13097224
申请日：2011-04-29
申请人： Srikanth Keesara
发明人： Srikanth Keesara
IPC分类号： H04L12/28
CPC分类号： H04L12/4633 , H04L12/4641 , H04L45/38 , H04L45/66
摘要： Techniques disclosed herein include features and methods that extend functionality of provider networks including Provider Backbone Bridges (PBB) networks. Techniques include using a portion of information within Ethernet address encapsulation headers for purposes other than identifying source and destination device addresses. The system limits a number of bits in an address header that should be considered by a provider network node when doing an address lookup in forwarding tables of a provider network node, such as by masking the portion of bits or otherwise disregarding that portion of bits during address lookup. The remaining bits in the address field(s) become free bits that can be used for a variety of application purposes, such as flow path selection. By using information fields that already exist in the Mac-In-Mac (MIM) encapsulation header, such Techniques provide additional information without increasing packet size or requiring new protocols.
摘要翻译： 本文公开的技术包括扩展提供商网络的功能的特征和方法，包括提供者骨干桥（PBB）网络。 技术包括在除了识别源设备地址和目的地设备地址之外的目的中使用以太网地址封装报头中的一部分信息。 当在提供商网络节点的转发表中进行地址查找时，系统限制地址头中应该被提供商网络节点考虑的比特数，例如通过掩蔽比特的一部分或以其他方式忽略该部分的比特 地址查找。 地址字段中的其余位成为可用于各种应用目的（例如流路选择）的空闲位。 通过使用Mac-in-Mac（MIM）封装头中已经存在的信息字段，此类技术可提供附加信息，而不增加数据包大小或需要新协议。
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公开(公告)号：US20130136122A1
公开(公告)日：2013-05-30
申请号：US13305305
申请日：2011-11-28
IPC分类号： H04L12/56
CPC分类号： H04L65/4076 , H04L12/185 , H04L12/1886
摘要： Techniques disclosed herein include systems and methods for extending an IGMP broadcast domain (multicast domain) across a transport network without implementing IGMP snooping within the core of the transport network, yet while providing efficient transport within the core of the transport network. Techniques include dividing a single IGMP interface into multiple IGMP domains or sub-domains. A separate Querier is then elected for each IGMP domain using the single IGMP interface. Edge nodes of the transport network can be configured as the multiple IGMP Queriers, and then re-distribute sender information via a separate routing protocol. Requests can then be sent using the transport network control messaging or routing protocol instead of IGMP snoop messages to advertise multicast data streams in between the multiple IGMP domains (across the transport network). Traffic can then delivered efficiently between isolated access networks of a single Service Layer 2 Network.
摘要翻译： 本文公开的技术包括跨传输网络扩展IGMP广播域（组播域）的系统和方法，而不在传输网络的核心内实现IGMP监听，同时在传输网络的核心内提供有效的传输。 技术包括将单个IGMP接口划分为多个IGMP域或子域。 然后使用单个IGMP接口为每个IGMP域选择单独的查询器。 可以将传输网络的边缘节点配置为多个IGMP查询器，然后通过单独的路由协议重新分配发送方信息。 然后可以使用传输网络控制消息传递或路由协议而不是IGMP侦听消息发送请求，以在多个IGMP域（跨传输网络）之间通告组播数据流。 然后可以在单个服务层2网络的隔离接入网络之间高效地传送流量。
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公开(公告)号：US20120063465A1
公开(公告)日：2012-03-15
申请号：US12907535
申请日：2010-10-19
IPC分类号： H04L12/56
CPC分类号： H04L12/4633 , H04L43/0811 , H04L45/22 , H04L45/28
摘要： A transport network employs dual homing to an access network to provide connectivity from multiple network switches. Dual homing is a mechanism by which an access network employs pair of switches in the transport network as if it were connecting to a single device. Conventional arrangements for defining multiple paths from a transport network to an access network suffer from the shortcomings of potential routing loops, increased hops to the access network, and inability or inconsistency with forwarding to different types of access networks, and may involve redirecting traffic absent faults in the access network. The dual homed network switches identify the type of access network and perform switching logic corresponding to the access network type to provide comprehensive dual-homed support to the access network independently of the type of transport employed in the access network, and employ redirection only if there is a fault in the access network.
摘要翻译： 传输网络使用双归属接入网络来提供来自多个网络交换机的连接。 双归属是一种接入网络在传输网络中使用一对交换机的机制，就像它连接到单个设备一样。 用于定义从传输网络到接入网络的多个路径的常规布置遭受潜在路由环路的缺点，对接入网络的增加的跳跃，以及与转发到不同类型的接入网络的不能或不一致，并且可能涉及重定向业务不存在故障 在接入网络中。 双归属网络交换机识别接入网络的类型，并执行与接入网络类型相对应的交换逻辑，以独立于接入网络中使用的传输类型，为接入网提供全面的双归属支持，只有在 是接入网络中的故障。
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28.发明申请公开(公告)号：US20090234969A1
公开(公告)日：2009-09-17
申请号：US12249944
申请日：2008-10-12
申请人： Dinesh Mohan , Paul Unbehagen , Srikanth Keesara
发明人： Dinesh Mohan , Paul Unbehagen , Srikanth Keesara
IPC分类号： G06F15/173
摘要： Ethernet OAM MEPs are automatically configured in a link state protocol controlled Ethernet network. A node operating in the link state protocol controlled Ethernet network receives a Link State PDU (LSP) containing a TLV having a MEP associated with the Ethernet MAC node ID of a second node in the link state protocol controlled Ethernet network, where the path between the first and second node includes a plurality of links. The node updates a forwarding table to indicate an association between the MEP ID and a Ethernet MAC node ID of the second node. An Ethernet OAM maintenance endpoint is produced in a link state protocol controlled Ethernet network by hashing a Sys-ID to produce a MEP; storing the MEP in a TLV; and forwarding the TLV over the link state protocol controlled Ethernet network in an LSP.
摘要翻译： 以太网OAM MEP自动配置在链路状态协议控制的以太网中。 在链路状态协议控制的以太网中操作的节点接收链路状态PDU（LSP），链路状态PDU（LSP）包含具有与链路状态协议控制的以太网中的第二节点的以太网MAC节点ID相关联的MEP的TLV， 第一和第二节点包括多个链接。 节点更新转发表以指示MEP ID与第二节点的以太网MAC节点ID之间的关联。 在链路状态协议控制的以太网网络中产生以太网OAM维护端点，通过散列Sys-ID产生MEP; 将MEP存储在TLV中; 并通过链路状态协议控制的以太网在LSP中转发TLV。
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29.发明申请公开(公告)号：US20090232006A1
公开(公告)日：2009-09-17
申请号：US12249946
申请日：2008-10-12
申请人： Dinesh Mohan , Paul Unbehagen , Srikanth Keesara
发明人： Dinesh Mohan , Paul Unbehagen , Srikanth Keesara
IPC分类号： H04L12/26
摘要： An OAM link trace message is sent from a source node to a target node in a link state protocol controlled Ethernet network. The link trace message using an 802.1ag format except, as a destination address, it uses either the unicast Ethernet MAC node ID of the target node, or the multicast destination address of the service instance. A method of network topology verification in a link state protocol controlled Ethernet network checks the link state protocol database at a node to ascertain the control plane topology view of at least part of the network. It then executes one or more Ethernet OAM commands from the node to ascertain the data plane topology view of the same part of the network. The control plane topology view of the network is compared to the data plane topology view of the network to see if they match. An error is flagged if they do not match.
摘要翻译： OAM链路跟踪消息从源节点发送到链路状态协议控制的以太网中的目标节点。 使用802.1ag格式的链路跟踪消息，除了目的地址之外，它使用目标节点的单播以太网MAC节点ID或服务实例的组播目的地址。 在链路状态协议控制的以太网中网络拓扑验证的方法检查节点处的链路状态协议数据库，以确定网络的至少一部分的控制平面拓扑视图。 然后从节点执行一个或多个以太网OAM命令，以确定网络的同一部分的数据平面拓扑视图。 将网络的控制平面拓扑视图与网络的数据平面拓扑视图进行比较，看它们是否匹配。 如果错误不匹配，则会被标记。
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公开(公告)号：US20090232005A1
公开(公告)日：2009-09-17
申请号：US12249941
申请日：2008-10-12
申请人： Dinesh Mohan , Paul Unbehagen , Srikanth Keesara
发明人： Dinesh Mohan , Paul Unbehagen , Srikanth Keesara
IPC分类号： H04L12/26
摘要： Network and performance monitoring in a link state protocol controlled Ethernet network. A first node receives a network layer monitoring command from a network layer monitoring requestor. The monitoring command is directed to a second node. The first node resolves the network layer monitoring command into one or more Ethernet OAM command(s); The first node sends the Ethernet OAM command(s) to the second node, receives the results of the Ethernet OAM command(s) from the second node; and returns the results of the Ethernet OAM command(s) in the form of a network layer response to the network layer monitoring requestor. Furthermore, network layer monitoring commands may be one or more performance monitoring commands, and the Ethernet OAM commands can include Y.1731 commands. An IP flow can be adjusted between the first node and the second node in response to the network layer response returned to the network layer monitoring requestor.
摘要翻译： 链路状态协议控制的以太网网络中的网络和性能监控。 第一节点从网络层监视请求者接收网络层监视命令。 监视命令指向第二个节点。 第一个节点将网络层监控命令解析为一个或多个以太网OAM命令; 第一个节点向第二个节点发送以太网OAM命令，从第二个节点接收以太网OAM命令的结果; 并以网络层响应的形式将以太网OAM命令的结果返回给网络层监视请求者。 此外，网络层监视命令可以是一个或多个性能监视命令，并且以太网OAM命令可以包括Y.1731命令。 响应于返回给网络层监视请求者的网络层响应，可以在第一节点和第二节点之间调整IP流。
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