VIRTUAL ROUTER REDUNDANCY PROTOCOL FOR SCALABLE DISTRIBUTED DEFAULT ROUTING GATEWAY
    11.
    发明申请
    VIRTUAL ROUTER REDUNDANCY PROTOCOL FOR SCALABLE DISTRIBUTED DEFAULT ROUTING GATEWAY 有权
    可扩展分布式默认路由网关的虚拟路由器冗余协议

    公开(公告)号:US20140347976A1

    公开(公告)日:2014-11-27

    申请号:US13898836

    申请日:2013-05-21

    IPC分类号: H04L12/24

    CPC分类号: H04L45/586 H04L45/28

    摘要: A VRRP router group can operate in either a standard VRRP mode or a distributed gateway mode in which all VRRP routers generate VRRP control packets but transmit those packets only to local access network-side hosts. The rate of VRRP control packet generation may be decreased in the distributed gateway mode relative to the standard mode. Moreover, VRRP router CPUs may cease processing of VRRP control packets in the distributed gateway mode.

    摘要翻译: VRRP路由器组可以在标准VRRP模式或分布式网关模式下运行,其中所有VRRP路由器都生成VRRP控制报文,但只将这些报文发送到本地接入网侧主机。 在分布式网关模式下,相对于标准模式,VRRP控制包生成速率可能会降低。 此外,VRRP路由器CPU可能会在分布式网关模式下停止处理VRRP控制数据包。

    Shared virtual tunnels supporting Mac learning in communication networks
    12.
    发明授权
    Shared virtual tunnels supporting Mac learning in communication networks 有权
    在通信网络中支持Mac学习的共享虚拟隧道

    公开(公告)号:US08565230B2

    公开(公告)日:2013-10-22

    申请号:US12916730

    申请日:2010-11-01

    IPC分类号: H04L12/00

    摘要: Embodiments herein include systems and methods for providing a mechanism for tunneled data transport within a dual homed access network. A tunnel manager, at a first network connectivity device in a transport network, identifies the transport network configured to interconnect at least two access networks for transporting data traffic between one or more end stations connected to the access networks. The first network connectivity device is coupled to a first access network. The tunnel manager identifies a second network connectivity device. The second network connectivity device is coupled to the first access network to provide the first access network dual homed access to the transport network via the first and second network connectivity devices. The tunnel manager creates a virtual tunnel that connects the first and second network connectivity devices to a third network connectivity device across the transport network. The virtual tunnel defines a same virtual tunnel having multiple paths such that the third network connectivity device learns a single virtual tunnel for device address learning.

    摘要翻译: 本文的实施例包括用于在双归位接入网络内提供用于隧道化数据传输的机制的系统和方法。 在传输网络中的第一网络连接设备处的隧道管理器识别配置成互连至少两个接入网络的传输网络,用于在连接到接入网络的一个或多个终端站之间传送数据业务。 第一网络连接设备耦合到第一接入网络。 隧道管理器识别第二个网络连接设备。 所述第二网络连接设备耦合到所述第一接入网络,以经由所述第一和第二网络连接设备向所述传输网络提供所述第一接入网络双归属接入。 隧道管理器创建虚拟隧道,该虚拟隧道将第一和第二网络连接设备连接到跨传输网络的第三网络连接设备。 虚拟隧道定义了具有多个路径的相同虚拟隧道,使得第三网络连接设备学习用于设备地址学习的单个虚拟隧道。

    METHOD AND APPARATUS FOR RESOLVING CONFLICTING UNICAST ADVERTISEMENTS IN A TRANSPORT NETWORK
    13.
    发明申请
    METHOD AND APPARATUS FOR RESOLVING CONFLICTING UNICAST ADVERTISEMENTS IN A TRANSPORT NETWORK 有权
    用于解决交通运输网络中的冲突性广告的方法和装置

    公开(公告)号:US20130080602A1

    公开(公告)日:2013-03-28

    申请号:US13246110

    申请日:2011-09-27

    IPC分类号: G06F15/177

    摘要: A method, apparatus and computer program product for resolving conflicting unicast advertisements in transport network is presented. A particular Backbone Virtual Local Area Network (BVLAN) as a first BVLAN (BVLAN1) on a first network device in a transport network. The first network device receives a first message from a second network device advertising a first Backbone Media Access Channel (BMAC) on a first BVLAN (BMAC1,BVLAN1). The first network device receives a second message from a third network device advertising the (BMAC1,BVLAN1). The (BMAC1,BVLAN1) is assigned to the device of the second network device and the third network device having a lower Identifier (ID) value, wherein the ID value comprises one of the group comprising an Intermediate System to Intermediate System (ISIS) system ID and a Shortest Path Bridging (SPB) bridge ID.

    摘要翻译: 提出了一种用于解决传输网络中冲突单播广告的方法,装置和计算机程序产品。 作为传输网络中的第一网络设备上的第一BVLAN(BVLAN1)的特定骨干虚拟局域网(BVLAN)。 第一网络设备从在第一BVLAN(BMAC1,BVLAN1)上发布第一骨干媒体接入信道(BMAC)的第二网络设备接收第一消息。 第一网络设备从广告(BMAC1,BVLAN1)的第三网络设备接收第二消息。 (BMAC1,BVLAN1)被分配给第二网络设备的设备,并且具有较低标识符(ID)值的第三网络设备,其中ID值包括包括中间系统到中间系统(ISIS)系统的组之一 ID和最短路径桥接(SPB)桥ID。

    AUTOMATIC MEP PROVISIONING IN A LINK STATE CONTROLLED ETHERNET NETWORK
    14.
    发明申请
    AUTOMATIC MEP PROVISIONING IN A LINK STATE CONTROLLED ETHERNET NETWORK 有权
    链路状态下的自动环境控制以太网网络

    公开(公告)号:US20110255417A1

    公开(公告)日:2011-10-20

    申请号:US13173807

    申请日:2011-06-30

    IPC分类号: H04L12/26

    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。

    Continuity check management in a link state controlled ethernet network
    15.
    发明授权
    Continuity check management in a link state controlled ethernet network 有权
    链路状态控制的以太网网络中的连续性检查管理

    公开(公告)号:US09059918B2

    公开(公告)日:2015-06-16

    申请号:US13561040

    申请日:2012-07-29

    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 uses 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. 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. One or more Ethernet OAM commands from the node are executed 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。 链路跟踪消息使用802.1ag格式,除了作为目的地址,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。 链路状态协议控制的以太网网络中的网络拓扑验证检查节点处的链路状态协议数据库,以确定至少部分网络的控制平面拓扑视图。 执行来自节点的一个或多个以太网OAM命令以确定网络的相同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。

    Usage of masked ethernet addresses between transparent interconnect of lots of links (TRILL) routing bridges
    16.
    发明授权
    Usage of masked ethernet addresses between transparent interconnect of lots of links (TRILL) routing bridges 有权
    在许多链路(TRILL)路由桥的透明互连之间使用掩码以太网地址

    公开(公告)号:US08755383B2

    公开(公告)日:2014-06-17

    申请号:US13149066

    申请日:2011-05-31

    申请人: Srikanth Keesara

    发明人: Srikanth Keesara

    IPC分类号: H04L12/28

    CPC分类号: H04L45/66

    摘要: Techniques herein include systems and methods that extend functionality of transport networks including Transparent Interconnect of Lots of Links (TRILL) networks. Techniques include using a portion of information within transport device address encapsulation headers for purposes other than identifying source and destination device addresses. The system masks a portion of bits in an address header for an address lookup in forwarding tables of a transport network node. The remaining bits in the address field(s) become free bits that can be used for a variety of application purposes, such as flow identifier selection. By using information fields that already exist in encapsulation headers, such techniques provide additional information without increasing packet size or requiring new protocols. Embodiments can combine Equal-cost multi-path routing (ECMP) functionality, Reverse Path Forwarding (RPF) checks, and Time to live (TTL) protection at the same time.

    摘要翻译: 这里的技术包括扩展传输网络的功能的系统和方法,包括多个链路的透明互连(TRILL)网络。 技术包括在传输设备地址封装报头内部使用一部分信息用于识别源设备地址和目标设备地址以外的目的。 该系统在传送网络节点的转发表中掩盖地址头中的位的一部分用于地址查找。 地址字段中的其余位成为可用于各种应用目的(例如流标识符选择)的空闲位。 通过使用封装头中已经存在的信息字段,这些技术提供附加信息,而不增加数据包大小或需要新的协议。 实施例可以同时组合等价多路径路由(ECMP)功能,反向路径转发(RPF)检查和生存时间(TTL)保护。

    Multicast tree discovery using 802.1ag
    17.
    发明授权
    Multicast tree discovery using 802.1ag 有权
    使用802.1ag的组播树发现

    公开(公告)号:US08750299B2

    公开(公告)日:2014-06-10

    申请号:US12942282

    申请日:2010-11-09

    IPC分类号: H04L12/56

    摘要: Methods and apparatus provide for a network device(s) employing tree tracer processing of a data packet(s) and/or a response(s) in order to discover and graphically represent all the paths within a hierarchical tree of network devices for multicast traffic flows. Specifically, a first network device receives a data packet. The data packet provides a multicast target MAC address. The first network device forwards the data packet to a plurality of network devices, where each of the plurality of the network devices belong to a multicast group identified according to the multicast target MAC address. Based on receipt of the data packet, the first network device generates and transmits a first response to a source of the data packet. The first response indicates a placement of the first network device with respect to a hierarchical tree of the plurality of network devices belonging to the multicast group.

    摘要翻译: 方法和装置提供一种使用数据分组和/或响应的树状跟踪处理的网络设备,以便发现和图形地表示用于组播业务的网络设备的分层树中的所有路径 流动。 具体地,第一网络设备接收数据分组。 数据包提供组播目标MAC地址。 第一网络设备将数据分组转发到多个网络设备,其中多个网络设备中的每一个属于根据多播目标MAC地址识别的多播组。 基于数据分组的接收,第一网络设备生成并向数据分组的源发送第一响应。 第一响应指示第一网络设备相对于属于多播组的多个网络设备的分层树的布置。

    Architecture For Virtualization And Distribution Of Routing Information Used In A Transport Network
    18.
    发明申请
    Architecture For Virtualization And Distribution Of Routing Information Used In A Transport Network 有权
    用于传输网络中路由信息的虚拟化和分发的架构

    公开(公告)号:US20140112188A1

    公开(公告)日:2014-04-24

    申请号:US13656862

    申请日:2012-10-22

    IPC分类号: H04L12/28

    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。

    USAGE OF MASKED BMAC ADDRESSES IN A PROVIDER BACKBONE BRIDGED (PBB) NETWORK
    19.
    发明申请
    USAGE OF MASKED BMAC ADDRESSES IN A PROVIDER BACKBONE BRIDGED (PBB) NETWORK 有权
    供应商桥梁(PBB)网络中使用掩蔽的BMAC地址

    公开(公告)号:US20120243544A1

    公开(公告)日:2012-09-27

    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

    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。

    INTERNAL MAINTENANCE ASSOCIATION END POINT (MEP) FOR SHARING STATE INFORMATION
    20.
    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。