Multi-layer network diagnostic tracing
    1.
    发明授权
    Multi-layer network diagnostic tracing 有权
    多层网络诊断跟踪

    公开(公告)号:US09137101B2

    公开(公告)日:2015-09-15

    申请号:US13303615

    申请日:2011-11-23

    摘要: A network management and monitoring application employs diagnostic messages for confirming network path connectivity and identifying and locating connectivity faults. Diagnostic messages similar to conventional “ping” and “traceroute” messages traverse the network along a prescribed path for which diagnostic feedback is desired. The application receives and analyzes return messages sent from network entities along the path to ascertain connectivity issues on the path. The application receives layer 3 identifiers such as IP addresses, however performs diagnostic operations such as continuity checks based on layer 2 identifiers such as MAC (Media Access Control) identifiers because certain network entities operate on L2 identifiers and would otherwise evade a continuity check based on layer 3 identifiers. The monitoring application therefore performs continuity diagnostics such as ping and traceroute operations using L2 identifiers, therefore pinpointing problems with an L2 network forwarding entity such as a bridge that lies between L3 entities such as routers.

    摘要翻译: 网络管理和监控应用程序使用诊断消息来确认网络路径连通性,并识别和定位连接故障。 类似于常规“ping”和“traceroute”消息的诊断消息沿着期望诊断反馈的规定路径穿越网络。 应用程序接收并分析从网络实体沿路径发送的返回消息,以确定路径上的连接问题。 应用程序接收诸如IP地址的层3标识符,然而执行诊断操作,例如基于诸如MAC(媒体访问控制)标识符的第2层标识符的连续性检查,因为某些网络实体在L2标识符上操作,否则将基于 第3层标识符。 因此,监视应用程序使用L2标识符来执行诸如ping和traceroute操作之类的连续性诊断,因此确定了L2网络转发实体(例如位于诸如路由器的L3实体之间的网桥)的问题。

    MULTI-LAYER NETWORK DIAGNOSTIC TRACING
    2.
    发明申请
    MULTI-LAYER NETWORK DIAGNOSTIC TRACING 有权
    多层网络诊断跟踪

    公开(公告)号:US20130128751A1

    公开(公告)日:2013-05-23

    申请号:US13303615

    申请日:2011-11-23

    IPC分类号: H04L12/26

    摘要: A network management and monitoring application employs diagnostic messages for confirming network path connectivity and identifying and locating connectivity faults. Diagnostic messages similar to conventional “ping” and “traceroute” messages traverse the network along a prescribed path for which diagnostic feedback is desired. The application receives and analyzes return messages sent from network entities along the path to ascertain connectivity issues on the path. The application receives layer 3 identifiers such as IP addresses, however performs diagnostic operations such as continuity checks based on layer 2 identifiers such as MAC (Media Access Control) identifiers because certain network entities operate on L2 identifiers and would otherwise evade a continuity check based on layer 3 identifiers. The monitoring application therefore performs continuity diagnostics such as ping and traceroute operations using L2 identifiers, therefore pinpointing problems with an L2 network forwarding entity such as a bridge that lies between L3 entities such as routers.

    摘要翻译: 网络管理和监控应用程序使用诊断消息来确认网络路径连通性,并识别和定位连接故障。 类似于常规“ping”和“traceroute”消息的诊断消息沿着期望诊断反馈的规定路径穿越网络。 应用程序接收并分析从网络实体沿路径发送的返回消息,以确定路径上的连接问题。 应用程序接收诸如IP地址的层3标识符,然而执行诊断操作,例如基于诸如MAC(媒体访问控制)标识符的第2层标识符的连续性检查,因为某些网络实体操作在L2标识符上,否则将基于 第3层标识符。 因此,监视应用程序使用L2标识符来执行诸如ping和traceroute操作之类的连续性诊断,因此确定了L2网络转发实体(例如位于诸如路由器的L3实体之间的网桥)的问题。

    CONVEYING THE VLAN/L2 VSN/BRIDGING-DOMAIN OF THE INCOMING INTERFACE (IIF) WHEN TRANSPORTING MULTICAST TRAFFIC OVER A SHORTEST PATH BRIDGED (SPB) NETWORK
    3.
    发明申请
    CONVEYING THE VLAN/L2 VSN/BRIDGING-DOMAIN OF THE INCOMING INTERFACE (IIF) WHEN TRANSPORTING MULTICAST TRAFFIC OVER A SHORTEST PATH BRIDGED (SPB) NETWORK 有权
    当运输跨越最短路径(SPB)网络的多媒体业务时,传输入局接口(IIF)的VLAN / L2 VSN / BRIDGING-DOMAIN

    公开(公告)号:US20130077624A1

    公开(公告)日:2013-03-28

    申请号:US13241869

    申请日:2011-09-23

    IPC分类号: H04L12/56

    CPC分类号: H04L12/4662 H04L12/4633

    摘要: Techniques disclosed herein include systems and methods for improving multicast traffic operations in a Shortest Path Bridging (SPB) network by conveying bridging domain information of an incoming interface (IIF) when transporting multicast traffic over the SPB network. Techniques disclosed herein include modifying encapsulation packet header information of existing Mac-In-Mac fields to convey additional information that can be interpreted at edge nodes by modifying edge node interpretation of multicast data. Specifically, the value of the I-SID in the BMAC-DA field can be set to be different from the I-SID value in the I-TAG field. Carrying the L2 VSN I-SID value in the I-TAG allows the Egress BEBs to determine which VLAN/L2 VSN/Bridging-Domain of the IIF is in use, and then modify or preserve underlying header information accordingly.

    摘要翻译: 本文公开的技术包括当通过SPB网络传输多播流量时,通过传送输入接口(IIF)的桥接域信息来改善最短路径桥接(SPB)网络中的多播业务操作的系统和方法。 本文公开的技术包括修改现有Mac-In-Mac字段的封装分组报头信息,以传送可以通过修改多播数据的边缘节点解释来在边缘节点处解释的附加信息。 具体地说,BMAC-DA字段中的I-SID的值可以被设置为与I-TAG字段中的I-SID值不同。 在I-TAG中携带L2 VSN I-SID值允许出口BEB确定IIF的哪个VLAN / L2 VSN /桥接域正在使用,然后相应地修改或保留底层头信息。

    Multicast network diagnostics
    4.
    发明授权
    Multicast network diagnostics 有权
    组播网络诊断

    公开(公告)号:US09300540B2

    公开(公告)日:2016-03-29

    申请号:US13271421

    申请日:2011-10-12

    CPC分类号: H04L41/12 H04L43/10

    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。

    Multicast Network Diagnostics
    5.
    发明申请
    Multicast Network Diagnostics 有权
    组播网络诊断

    公开(公告)号:US20120113817A1

    公开(公告)日:2012-05-10

    申请号:US13271421

    申请日:2011-10-12

    IPC分类号: H04L12/26

    CPC分类号: H04L41/12 H04L43/10

    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.15

    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。 15

    Multicast tree discovery using 802.1ag
    6.
    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。

    MULTICAST TREE DISCOVERY USING 802.1ag
    7.
    发明申请
    MULTICAST TREE DISCOVERY USING 802.1ag 有权
    使用802.1ag发现多播树

    公开(公告)号:US20120063453A1

    公开(公告)日:2012-03-15

    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。

    SEPARATION OF EDGE AND ROUTING/CONTROL INFORMATION FOR MULTICAST OVER SHORTEST PATH BRIDGING
    8.
    发明申请
    SEPARATION OF EDGE AND ROUTING/CONTROL INFORMATION FOR MULTICAST OVER SHORTEST PATH BRIDGING 有权
    分离通道和路径/控制信息,用于跨越短路径桥路

    公开(公告)号:US20130077626A1

    公开(公告)日:2013-03-28

    申请号:US13242422

    申请日:2011-09-23

    IPC分类号: H04L12/56

    CPC分类号: H04L45/66

    摘要: Techniques disclosed herein include systems and methods for providing a scalable solution to transmit edge IP Multicast sender information in a Shortest Path Bridging (SPB) network. Control information is exchanged between Ingress Backbone Edge Bridges and Egress Backbone Edge Bridges using Multicast Flow Specific and type-length-value (TLV) structures, or other control messages, to announce available multicast streams at ingress nodes within the SPB network. Such exchanges of control messages trigger sending SPB specific Intermediate System To Intermediate System (IS-IS) TLV control message with path computation information via IS-IS control messages. This second set of control messages is exchanged within the SPB network and includes source-specific multicast stream information that is used by Backbone Core Bridges to establish a multicast forward state and compute multicast forwarding paths. Multicast data traffic can then be transmitted through the SPB network using a one-to-many distribution model.

    摘要翻译: 本文公开的技术包括用于提供可扩展解决方案以在最短路径桥接(SPB)网络中传送边缘IP多播发送者信息的系统和方法。 使用组播流特定和类型长度值(TLV)结构或其他控制消息在Ingress Backbone Edge Bridges和Egress Backbone Edge Bridges之间交换控制信息,以在SPB网络内的入口节点上宣布可用的组播流。 这种交换控制消息通过IS-IS控制消息触发发送SPB特定的具有路径计算信息的中间系统到中间系统(IS-IS)TLV控制消息。 该第二组控制消息在SPB网络内进行交换,并包括由Backbone Core Bridges用于建立组播转发状态并计算组播转发路径的源特定组播流信息。 然后可以使用一对多分布模型通过SPB网络传输组播数据流量。

    USAGE OF MASKED ETHERNET ADDRESSES BETWEEN TRANSPARENT INTERCONNECT OF LOTS OF LINKS (TRILL) ROUTING BRIDGES
    9.
    发明申请
    USAGE OF MASKED ETHERNET ADDRESSES BETWEEN TRANSPARENT INTERCONNECT OF LOTS OF LINKS (TRILL) ROUTING BRIDGES 有权
    在链路(TRILL)路由桥之间的透明互连之间的掩蔽以太网的使用

    公开(公告)号:US20120243539A1

    公开(公告)日:2012-09-27

    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 H04L12/56

    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。

    Continuity check management in a link state controlled Ethernet network
    10.
    发明授权
    Continuity check management in a link state controlled Ethernet network 失效
    链路状态控制以太网中的连续性检查管理

    公开(公告)号:US08264970B2

    公开(公告)日:2012-09-11

    申请号:US12249946

    申请日:2008-10-12

    IPC分类号: H04L12/26 H04L12/28

    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。