公开(公告)号：US20050099954A1

公开(公告)日：2005-05-12

申请号：US10881565

申请日：2004-06-30

申请人： Dinesh Mohan ,  Timothy Mancour ,  Marc Holness

发明人： Dinesh Mohan ,  Timothy Mancour ,  Marc Holness

IPC分类号： H04L12/28

CPC分类号： H04L41/12 ,  H04L12/462 ,  H04L41/0213

摘要： Network topography may be discovered by a network element on an Ethernet network by collecting connectivity check messages periodically issued by other network elements on the network and using the information gleaned from those messages to build a topography database. Since the connectivity check messages may be link level or service instance based, the topography database may include network topography as well as service topography on the Ethernet network. Ethernet OAM loopback frames may also be used to cause network elements on the Ethernet network to issue response frames directed to the initiating network element. By collecting responses from the responding network elements, the initiating network element can build a topography database of network elements on the Ethernet network. This topography database may show the overall network topography or service instances on the network, and may provide visibility within one or more domains.

摘要翻译： 通过收集由网络上的其他网络元件定期发布的连接性检查消息并使用从这些消息中收集的信息来构建地形数据库，网络拓扑可以由以太网上的网络元件发现。 由于连接性检查消息可以是基于链路级或服务实例，所以地形数据库可以包括以太网上的网络拓扑以及服务拓扑。 以太网OAM回环帧也可以用于使以太网上的网元发出指向发起网元的响应帧。 通过从响应的网络元件收集响应，发起网元可以在以太网上构建网元的地形数据库。 该地形数据库可以显示网络上的整体网络拓扑或服务实例，并且可以在一个或多个域内提供可见性。

公开(公告)号：US20050099951A1

公开(公告)日：2005-05-12

申请号：US10881292

申请日：2004-06-30

申请人： Dinesh Mohan ,  Timothy Mancour ,  Marc Holness

发明人： Dinesh Mohan ,  Timothy Mancour ,  Marc Holness

IPC分类号： H04L12/26

CPC分类号： H04L43/0811 ,  H04L43/10 ,  H04L45/28

摘要： Ethernet OAM connectivity check may be used to detect connectivity failures across a given pair of network elements on an Ethernet network. Connectivity check frames are generated and sent to a specific unicast DA or to a multicast DA. Once a network element begins to receive connectivity check frames, it expects to continue to receive further periodic connectivity check frames from that network element. If the network element stops receiving periodic connectivity check frames, it detects that connectivity to the sending network element is broken. Once a fault is identified, the fault may be verified using a loopback function, which causes a network element receiving an Ethernet frame to transmit a corresponding frame back to the original network element. Loopback may be intrusive such that all received frames are looped back except OAM frames, or non-intrusive where only OAM frames are looped back.

摘要翻译： 以太网OAM连接检查可用于检测以太网上给定的一对网络上的连接故障。 生成连通性检查帧并将其发送到特定的单播DA或多播DA。 一旦网络元件开始接收连接性检查帧，它将期望从该网络元件继续接收进一步的周期性连接性检查帧。 如果网络元件停止接收周期性连接检查帧，则它检测到与发送网元的连接断开。 一旦识别到故障，就可以使用环回功能验证故障，这使得接收以太网帧的网络单元将相应的帧传送回原始网络单元。 环回可能是侵扰性的，使得除了OAM帧之外，所有接收到的帧都被环回，或者只有OAM帧被环回的非侵入帧。

公开(公告)号：US20050099955A1

公开(公告)日：2005-05-12

申请号：US10880867

申请日：2004-06-30

申请人： Dinesh Mohan ,  Timothy Mancour ,  Marc Holness

发明人： Dinesh Mohan ,  Timothy Mancour ,  Marc Holness

IPC分类号： G01R31/08 ,  G06F11/00 ,  G08C15/00 ,  H04J1/16 ,  H04J3/14 ,  H04L1/00 ,  H04L12/26

CPC分类号： H04L43/0811 ,  H04L1/24 ,  H04L12/462 ,  H04L41/0677 ,  H04L43/10

摘要： Ethernet OAM may be used to trace a path on an Ethernet network. If the path reaches the destination, there is no fault. If the path doesn't reach the destination, the network element farthest along the path is adjacent the fault. The path trace may be used from both ends of a given path to confirm the presence of a single fault or to determine the likelihood of multiple faults on the path. A path trace Ethernet OAM frame may be issued on the network with instructions that network elements with knowledge of a destination address should respond. If a network element knows the destination address, the receiving network element responds to the initiating network element with a unicast OAM frame and forwards the OAM frame if possible. The sequence of unicast response frames allows the initiating network element to build a path through the network toward the destination element and identify where the path stops.

摘要翻译： 以太网OAM可用于跟踪以太网上的路径。 如果路径到达目的地，则没有故障。 如果路径没有到达目的地，则沿路径最远的网络元素与故障相邻。 可以从给定路径的两端使用路径跟踪，以确认单个故障的存在或确定路径上多个故障的可能性。 可以在网络上发出路径跟踪以太网OAM帧，其指令是具有目的地地址知识的网络元素应该响应。 如果网元知道目的地址，则接收网络单元用单播OAM帧对发起的网元进行响应，如果可能，转发OAM帧。 单播响应帧的顺序允许发起网络元件通过网络向目的地元素建立路径，并且识别路径停止的位置。

公开(公告)号：US20050099949A1

公开(公告)日：2005-05-12

申请号：US10880876

申请日：2004-06-30

申请人： Dinesh Mohan ,  Timothy Mancour ,  Marc Holness

发明人： Dinesh Mohan ,  Timothy Mancour ,  Marc Holness

IPC分类号： G01R31/08 ,  H04L12/56

CPC分类号： H04L47/10

摘要： Ethernet OAM domains may be defined by defining reference points on the Ethernet network and using the reference points to insert and extract Ethernet OAM flows. The reference points may be network elements at the edge of a provider's domain, customer elements, or network elements configured to perform OAM flow handoffs between domains. By defining OAM multicast addresses and OAM flow identifiers, and allowing the reference points to be addressed by the multicast address and filtering to be performed by the reference points based on the OAM flow identifiers, OAM flows may be defined on the network. For example, customer-customer OAM flows may be defined, intra-provider and inter-provider OAM flows may be defined, and various segment OAM flows may be defined. An OAM frame format is provided to enable the OAM flows to be carried in a conventional Ethernet network.

摘要翻译： 可以通过在以太网上定义参考点并使用参考点插入和提取以太网OAM流来定义以太网OAM域。 参考点可以是提供商域的边缘处的网络元件，客户元素或被配置为在域之间执行OAM流切换的网络元件。 通过定义OAM多播地址和OAM流标识符，并且允许基于OAM流标识符的多播地址和由参考点执行的过滤来引用参考点，可以在网络上定义OAM流。 例如，可以定义客户 - 客户OAM流，可以定义内部提供商和提供商之间的OAM流，并且可以定义各种分段OAM流。 提供OAM帧格式以使得OAM流能够在传统的以太网中承载。

公开(公告)号：US07009983B2

公开(公告)日：2006-03-07

申请号：US10288243

申请日：2002-11-05

申请人： Timothy Mancour

发明人： Timothy Mancour

IPC分类号： H04L12/56

CPC分类号： H04L29/12018 ,  H04L29/12009 ,  H04L61/10

摘要： A P device interworks CE devices connected to the P device using different types of data links. The P device learns the address of a local CE device by monitoring the control messages, such as address resolution messages, originating from the local device. The P device may share the address of a local CE device with another local CE device by initiating a control message or responding to a control message issued by one of the local CE devices. This latter mechanism in effect hides the heterogeneous nature of the network.

摘要翻译： P设备使用不同类型的数据链路连接到P设备连接的CE设备。 P设备通过监视源自本地设备的控制消息（如地址解析消息）来学习本地CE设备的地址。 P设备可以通过发起控制消息或响应由本地CE设备之一发出的控制消息来与本地CE设备共享本地CE设备的地址。 后一种机制实际上隐藏了网络的异质性质。

公开(公告)号：US20050078602A1

公开(公告)日：2005-04-14

申请号：US10714080

申请日：2003-11-14

申请人： Timothy Mancour ,  Michael Loomis

发明人： Timothy Mancour ,  Michael Loomis

IPC分类号： H04L1/00 ,  H04L12/56

CPC分类号： H04L47/10 ,  H04L47/17 ,  H04L47/20 ,  H04L47/215 ,  H04L47/2441 ,  H04L47/31 ,  H04L47/525

摘要： Packets in a Per Hop Basis (PHB) are metered by a network element to see if they fall within a Committed Information Rate (CIR) or Committed Burst Size (CBS) for that PHB. Packets that are within the CIR or CBS for the given PHB are marked as in profile. Packets to be output over a given port that are not in profile are metered by a common Surplus Information Rate (SIR) meter, which is used to meter commonly excess packets from all PHBs configured through that port. By using a common SIR meter to meter out of profile packets for all PHBs on a given port, it is possible to allow packets from multiple PHBs to share the surplus bandwidth on a link connected to that port fairly, while not allocating bandwidth to PHBs that do not require surplus bandwidth. Token buckets may be used to implement the meters.

摘要翻译： 每个基站（PHB）的分组由网络元素计量，以查看它们是否落入该PHB的承诺信息速率（CIR）或承诺突发大小（CBS）。 在给定PHB的CIR或CBS内的数据包将被标记为配置文件。 要在不在配置文件中的给定端口上输出的数据包由普通剩余信息速率（SIR）计量表，用于通过该端口配置的所有PHB的通常过量数据包进行计费。 通过使用通用SIR仪表来计算给定端口上的所有PHB的配置文件包，可以允许来自多个PHB的分组在连接到该端口的链路上公平地共享剩余带宽，而不向PHB分配带宽 不要求带宽过剩。 令牌桶可用于实现仪表。

公开(公告)号：US08040890B2

公开(公告)日：2011-10-18

申请号：US12412677

申请日：2009-03-27

申请人： Arnold Sodder ,  Timothy Mancour ,  Louis Didiodato

发明人： Arnold Sodder ,  Timothy Mancour ,  Louis Didiodato

IPC分类号： H04L12/56 ,  H04L12/66

CPC分类号： H04L12/4641 ,  A61B6/488 ,  H04L12/4625 ,  H04L45/04 ,  H04L45/502

摘要： A method and apparatus are provided for creating a virtual hierarchical local area network. The method and apparatus provide a hierarchical framing technique that allows a network architecture to realize a local area network hierarchy within the network. In this manner, a first local area network hierarchy is defined by communication in a first frame format between a first set of network devices and a second set of network devices. A second local area network hierarchy is defined by communication in a second frame format between members of the second set of network devices. The second frame format includes the fields of a frame in the first frame format that is used to communicate between the first set of communication devices and the second set of communication devices.

摘要翻译： 提供了一种用于创建虚拟分层局域网的方法和装置。 该方法和装置提供了允许网络架构实现网络内的局域网层次结构的分级成帧技术。 以这种方式，通过在第一组网络设备和第二组网络设备之间的第一帧格式的通信来定义第一局域网层级。 第二局域网层级由第二组网络设备的成员之间以第二帧格式的通信来定义。 第二帧格式包括用于在第一组通信设备和第二组通信设备之间进行通信的第一帧格式的帧的字段。

公开(公告)号：US20050100026A1

公开(公告)日：2005-05-12

申请号：US10736108

申请日：2003-12-15

申请人： Timothy Mancour

发明人： Timothy Mancour

IPC分类号： H04L12/56

CPC分类号： H04L45/18 ,  H04L45/00 ,  H04L45/16

摘要： Capability based addressing in a communication network enables protocol data units (PDUs) to be addressed to network constructs such as network elements or interfaces with particular capabilities rather than with specific addresses. This allows PDUs to be addressed to network constructs without first identifying the network constructs or even knowing of the existence of the construct. By broadcasting a capability based PDU onto a network it is therefore possible to communicate with a particular type of device rather than with a particular identified device. This is applicable, for example, in connection with loop and backdoor detection. By broadcasting a PDU onto a network, e.g. using a hello-response protocol, it is possible to identify network constructs that should not be present on the network if the communication network is configured properly. An alarm or corrective action may be taken upon detection of a response.

摘要翻译： 通信网络中的基于能力的寻址使协议数据单元（PDU）能够被寻址到诸如具有特定能力而不是特定地址的网络元件或接口的网络结构。 这允许将PDU解决到网络构造而不首先识别网络构造或甚至知道构造的存在。 通过在网络上广播基于能力的PDU，因此可以与特定类型的设备进行通信，而不是与特定的识别设备进行通信。 这适用于例如环路和后门检测。 通过在网络上广播PDU，例如 使用hello-response协议，如果通信网络配置正确，可以识别网络中不应该存在的网络结构。 在检测到响应时可以采取警报或纠正措施。

公开(公告)号：US07529243B2

公开(公告)日：2009-05-05

申请号：US10621849

申请日：2003-07-16

申请人： Arnold Sodder ,  Timothy Mancour ,  Louis Didiodato

发明人： Arnold Sodder ,  Timothy Mancour ,  Louis Didiodato

IPC分类号： H04L12/56 ,  H04L12/66

CPC分类号： H04L12/4641 ,  A61B6/488 ,  H04L12/4625 ,  H04L45/04 ,  H04L45/502

摘要： A method and apparatus are provided for creating a virtual hierarchical local area network. The method and apparatus provide a hierarchical framing technique that allows a network architecture to realize a local area network hierarchy within the network. In this manner, a first local area network hierarchy is defined by communication in a first frame format between a first set of network devices and a second set of network devices. A second local area network hierarchy is defined by communication in a second frame format between members of the second set of network devices. The second frame format includes the fields of a frame in the first frame format that is used to communicate between the first set of communication devices and the second set of communication devices.

摘要翻译： 提供了一种用于创建虚拟分层局域网的方法和装置。 该方法和装置提供了允许网络架构实现网络内的局域网层次结构的分级成帧技术。 以这种方式，通过在第一组网络设备和第二组网络设备之间的第一帧格式的通信来定义第一局域网层级。 第二局域网层级由第二组网络设备的成员之间以第二帧格式的通信来定义。 第二帧格式包括用于在第一组通信设备和第二组通信设备之间进行通信的第一帧格式的帧的字段。

公开(公告)号：US07525974B2

公开(公告)日：2009-04-28

申请号：US10736108

申请日：2003-12-15

申请人： Timothy Mancour

发明人： Timothy Mancour

IPC分类号： H04L12/28 ,  H04L12/56

CPC分类号： H04L45/18 ,  H04L45/00 ,  H04L45/16

摘要： Capability based addressing in a communication network enables protocol data units (PDUs) to be addressed to network constructs such as network elements or interfaces with particular capabilities rather than with specific addresses. This allows PDUs to be addressed to network constructs without first identifying the network constructs or even knowing of the existence of the construct. By broadcasting a capability based PDU onto a network it is therefore possible to communicate with a particular type of device rather than with a particular identified device. This is applicable, for example, in connection with loop and backdoor detection. By broadcasting a PDU onto a network, e.g. using a hello-response protocol, it is possible to identify network constructs that should not be present on the network if the communication network is configured properly. An alarm or corrective action may be taken upon detection of a response.

摘要翻译： 通信网络中的基于能力的寻址使协议数据单元（PDU）能够被寻址到诸如具有特定能力而不是特定地址的网络元件或接口的网络结构。 这允许将PDU解决到网络构造而不首先识别网络构造或甚至知道构造的存在。 通过在网络上广播基于能力的PDU，因此可以与特定类型的设备进行通信，而不是与特定的识别设备进行通信。 这适用于例如环路和后门检测。 通过在网络上广播PDU，例如 使用hello-response协议，如果通信网络配置正确，可以识别网络中不应该存在的网络结构。 在检测到响应时可以采取警报或纠正措施。