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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
CPC分类号： H04L45/00 , H04L12/185 , H04L45/16 , H04L45/66
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。
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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
CPC分类号： H04L45/00 , H04L12/185 , H04L45/16 , H04L45/66
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。
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公开(公告)号：US09137101B2
公开(公告)日：2015-09-15
申请号：US13303615
申请日：2011-11-23
IPC分类号： G01R31/08 , H04L12/24 , H04L12/26 , H04L12/721
CPC分类号： H04L41/0677 , H04L43/0811 , H04L43/10 , H04L45/70
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。
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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
CPC分类号： H04L41/0677 , H04L43/0811 , H04L43/10 , H04L45/70
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。
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公开(公告)号：US20080101241A1
公开(公告)日：2008-05-01
申请号：US11724981
申请日：2007-03-16
申请人： Dinesh Mohan , Christopher Monti , Piotr Romanus , David Tsang , Michael Chen
发明人： Dinesh Mohan , Christopher Monti , Piotr Romanus , David Tsang , Michael Chen
IPC分类号： H04L12/26
CPC分类号： H04L41/0213 , H04L12/4641
摘要： OAM may be implemented at an intermediate node on a PBT trunk in an Ethernet network by causing OAM frames to be addressed to the PBT trunk endpoint but causing the OAM frames to carry an indicia (Ether-type, OpCode, TLV value or combination of these and other fields) that the OAM frames are intended to be used for intermediate node OAM functions. The Ether-type, OpCode, and TLV values may be standardized values, or vendor specific values such as OpCode=51 or TLV=31 may be used. Addressing the OAM frames to the PBT trunk end point enables the OAM frames to follow the PBT trunk through the network. The OAM indicia signals to the intermediate nodes that the OAM frames are intended to be used to perform an intermediate node OAM function. The OAM frames may contain reverse trunk information to prevent the intermediate nodes from being required to store correlation between forward and reverse PBT trunks.
摘要翻译： OAM可以通过使OAM帧被寻址到PBT中继端点而实现在以太网网络中的PBT中继的中间节点上，但是导致OAM帧携带标记（以太类型，OpCode，TLV值或这些的组合 和其他字段），OAM帧旨在用于中间节点OAM功能。 以太类型，OpCode和TLV值可以是标准化值，或者可以使用诸如OpCode = 51或TLV = 31的供应商特定值。 将OAM帧寻址到PBT中继端点使得OAM帧能够通过网络跟随PBT中继。 OAM标记向中间节点发信号通知OAM帧旨在用于执行中间节点OAM功能。 OAM帧可能包含反向中继信息，以防止中间节点需要存储正向和反向PBT中继线之间的相关性。
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