公开(公告)号：US08031630B2

公开(公告)日：2011-10-04

申请号：US10737219

申请日：2003-12-16

申请人： David Elie-Dit-Cosaque ,  Girish Chiruvolu ,  Jessy Rouyer ,  Ljubisa Tancevski ,  Jean-Francois Cartier ,  Laurence Rose ,  L. Michele Goodwin

发明人： David Elie-Dit-Cosaque ,  Girish Chiruvolu ,  Jessy Rouyer ,  Ljubisa Tancevski ,  Jean-Francois Cartier ,  Laurence Rose ,  L. Michele Goodwin

IPC分类号： H04L12/28

CPC分类号： H04L12/4625 ,  H04L12/4641

摘要： Customer virtual local area networks (C-VLANs) connecting multiple LAN segments are set up through a provider network (12). Provider edge bridges (PEs) are coupled to customer edge bridges (CEs) to provide a transparent link between LAN segments. To determine whether a backdoor link is used in the C-VLAN topology, PEs monitor MAC address from a predetermined time after a TCN is received to determine if there are contradictory addresses or new addresses relative to the existing MAC address tables (or forwarding databases) that are indicative of a backdoor link. If so, an unlearning message is sent to bridges in the provider domain. In another embodiment, CEs set a snoop bit to indicate which TCNs must be snooped.

摘要翻译： 通过提供商网络（12）设置连接多个LAN段的客户虚拟局域网（C-VLAN）。 提供商边缘网桥（PE）耦合到客户边缘网桥（CE），以提供LAN段之间的透明链路。 为了确定在C-VLAN拓扑中是否使用后门链路，PE在接收到TCN之后的预定时间内监视MAC地址，以确定相对于现有MAC地址表（或转发数据库）是否存在矛盾地址或新地址， 这表示后门链接。 如果是这样，将向提供商域中的网桥发送一个不学习的消息。 在另一个实施例中，CE设置窥探位以指示哪个TCN必须被窥探。

公开(公告)号：US08199636B1

公开(公告)日：2012-06-12

申请号：US10674220

申请日：2003-09-29

申请人： Jessy Rouyer ,  Girish Chiruvolu ,  Ljubisa Tancevski

发明人： Jessy Rouyer ,  Girish Chiruvolu ,  Ljubisa Tancevski

IPC分类号： G01R31/08 ,  H04L12/28 ,  H04L12/56 ,  G06F15/173

CPC分类号： H04L45/66 ,  H04L69/40

摘要： A bridged network system (10, 10′) is described comprising a plurality of nodes (N1-N7). Each node in the plurality of nodes is coupled to communicate with at least one other node in the plurality of nodes. The plurality of nodes comprise a bridge network between external nodes located externally from the plurality of nodes. Each node of the plurality of nodes is operable to perform the steps of receiving a packet (20, 20′), wherein the packet comprises a route indicator field, and responsive to the packet being received prior to a time of failure along a communication link between two of the plurality of nodes, transmitting the packet along a first route in the system to another node in the plurality of nodes. Conversely, each node of the plurality of nodes is also operable to perform the step of, responsive to the packet being received after a time of failure along a communication link between two of the plurality of nodes and in response to the route indicator field, transmitting the packet along a second route in the system to another node in the plurality of nodes, wherein the second route differs from the first route and is identified prior to the time of failure.

摘要翻译： 描述了包括多个节点（N1-N7）的桥接网络系统（10,10'）。 多个节点中的每个节点被耦合以与多个节点中的至少一个其他节点进行通信。 多个节点包括位于多个节点外部的外部节点之间的桥接网络。 多个节点的每个节点可操作以执行接收分组（20,20'）的步骤，其中分组包括路由指示符字段，并且响应于沿着通信链路在故障发生之前接收到的分组 在所述多个节点中的两个之间，将所述分组沿着所述系统中的第一路由发送到所述多个节点中的另一节点。 相反，多个节点中的每个节点也可操作以执行以下步骤：响应于在多个节点中的两个节点之间的通信链路上的故障发生时间之后接收到的数据包，并响应于路由指示符字段，发送 所述分组沿着所述系统中的第二路由到所述多个节点中的另一节点，其中所述第二路由与所述第一路由不同，并且在故障之前被识别。

公开(公告)号：US20060056414A1

公开(公告)日：2006-03-16

申请号：US11221276

申请日：2005-09-06

申请人： David Elie-Dit-Cosaque ,  Kamakshi Sridhar ,  Maarten Petrus Vissers ,  Jessy Rouyer

发明人： David Elie-Dit-Cosaque ,  Kamakshi Sridhar ,  Maarten Petrus Vissers ,  Jessy Rouyer

IPC分类号： H04L12/56

CPC分类号： H04L12/4687 ,  H04L12/4641 ,  H04L12/4691

摘要： A system and method for securing an Ethernet Connectivity Fault Management (CFM) domain defined on a Virtual Local Area Network (VLAN). In one embodiment, the scheme includes, responsive to registering by an external port with the VLAN, whereby the VLAN is extended to include the external port, monitoring by a boundary Maintenance End Point (MEP) node of the Ethernet CFM domain to determine if bidirectional control frame flow (e.g., Continuity Check (CC) frame flow) is observed thereat; and, responsive to determining by the boundary MEP node that there is no bidirectional control frame flow therethrough, generating an alarm indicative of a potential breach of the Ethernet CFM domain by the external port.

摘要翻译： 一种用于保护在虚拟局域网（VLAN）上定义的以太网连接故障管理（CFM）域的系统和方法。 在一个实施例中，该方案包括响应于外部端口与VLAN的注册，由此扩展VLAN以包括外部端口，由以太网CFM域的边界维护端点（MEP）节点监视以确定是否双向 在那里观察到控制帧流（例如，连续性检查（CC）帧流）; 并且响应于由边界MEP节点确定没有双向控制帧流过其中，从而产生指示由外部端口潜在地违反以太网CFM域的警报。

公开(公告)号：US07930741B2

公开(公告)日：2011-04-19

申请号：US11221276

申请日：2005-09-06

申请人： David Elie-Dit-Cosaque ,  Kamakshi Sridhar ,  Maarten Petrus Joseph Vissers ,  Jessy Rouyer

发明人： David Elie-Dit-Cosaque ,  Kamakshi Sridhar ,  Maarten Petrus Joseph Vissers ,  Jessy Rouyer

IPC分类号： G06F11/00 ,  G06F12/14 ,  G06F12/16 ,  G08B23/00

CPC分类号： H04L12/4687 ,  H04L12/4641 ,  H04L12/4691

摘要： A system and method for securing an Ethernet Connectivity Fault Management (CFM) domain defined on a Virtual Local Area Network (VLAN). In one embodiment, the scheme includes, responsive to registering by an external port with the VLAN, whereby the VLAN is extended to include the external port, monitoring by a boundary Maintenance End Point (MEP) node of the Ethernet CFM domain to determine if bidirectional control frame flow (e.g., Continuity Check (CC) frame flow) is observed thereat; and, responsive to determining by the boundary MEP node that there is no bidirectional control frame flow therethrough, generating an alarm indicative of a potential breach of the Ethernet CFM domain by the external port.

摘要翻译： 一种用于保护在虚拟局域网（VLAN）上定义的以太网连接故障管理（CFM）域的系统和方法。 在一个实施例中，该方案包括响应于外部端口与VLAN的注册，由此扩展VLAN以包括外部端口，由以太网CFM域的边界维护端点（MEP）节点监视以确定是否双向 在那里观察到控制帧流（例如，连续性检查（CC）帧流）; 并且响应于由边界MEP节点确定没有双向控制帧流过其中，从而产生指示由外部端口潜在地违反以太网CFM域的警报。

公开(公告)号：US07391744B2

公开(公告)日：2008-06-24

申请号：US10967873

申请日：2004-10-18

申请人： Jessy Rouyer ,  Kamakshi Sridhar ,  Ljubisa Tancevski

发明人： Jessy Rouyer ,  Kamakshi Sridhar ,  Ljubisa Tancevski

IPC分类号： G01R31/08

CPC分类号： H04L12/462 ,  H04L45/48

摘要： A bridged network system (20). The bridged network system comprises a plurality of bridge nodes (N0-N7). Each bridge node in the plurality of bridge nodes is coupled to communicate with at least one other bridge node in the plurality of nodes. Further, bridge nodes in the plurality of bridge nodes are connected to one another to form a communications-possible line of bridge nodes (N0, N7, N6, N5, N1, N4, N3, N2). Each bridge node comprises circuitry for associating a bridge priority, selected from a plurality of bridge priorities, with the respective bridge node. The plurality of bridge priorities may be arranged in an ordered sequence, but the bridge priorities associated with successive bridge nodes along the communications-possible line of bridge nodes comprises at least two discontinuities (N0/N7; N1/N5; N1/N4) in the ordered sequence.

摘要翻译： 桥接网络系统（20）。 桥接网络系统包括多个桥接节点（N N-N 7）。 多个桥接节点中的每个桥节点被耦合以与多个节点中的至少一个其他网桥节点进行通信。 此外，多个桥接节点中的桥节点彼此连接以形成桥接节点（N SUB，N N，N N，N N） 6，N 5，N 1，N 4，N 3，N 3， 2 ）。 每个桥节点包括用于将从多个桥优先级中选择的桥优先级与相应的桥节点相关联的电路。 多个桥优先级可以以有序的顺序排列，但是沿着桥接节点的通信可能线路的连续网桥节点相关联的桥优先级包括至少两个不连续性（N N 0 / N _{7 N N 1 N N N N N N N N N N N N N N N N N N N N N N N 序列。}

公开(公告)号：US20080159304A1

公开(公告)日：2008-07-03

申请号：US11619225

申请日：2007-01-03

申请人： Timucin Ozugur ,  Sig Hal Badt ,  Jessy Rouyer ,  Ljubisa Tancevski

发明人： Timucin Ozugur ,  Sig Hal Badt ,  Jessy Rouyer ,  Ljubisa Tancevski

IPC分类号： H04L12/56

CPC分类号： H04L12/2832 ,  H04L2012/2849

摘要： Apparatus, and an associated method, for facilitating performance of multi-media, and other communication, services at an Ethernet network. A bridge provides communication control operations at the Ethernet network. Audio-video bridge domains are defined at the network. Service discovery messages generated by communication devices of a particular domain are forwarded only to other communication devices of the same domain. Redefinition and reconfiguration of the domains is made, as needed, all best to facilitate performance of the communication service.

摘要翻译： 装置和相关方法，用于促进以太网网络中的多媒体和其他通信服务的性能。 桥提供以太网网络的通信控制操作。 视频网桥域在网络上定义。 由特定域的通信设备生成的服务发现消息仅被转发到同一域的其他通信设备。 根据需要重新定义和重新配置域，以便于通信服务的性能。

公开(公告)号：US20070097859A1

公开(公告)日：2007-05-03

申请号：US11265866

申请日：2005-11-03

申请人： Ljubisa Tancevski ,  An Ge ,  Jessy Rouyer ,  Nicolas Sauze

发明人： Ljubisa Tancevski ,  An Ge ,  Jessy Rouyer ,  Nicolas Sauze

IPC分类号： H04J3/14

CPC分类号： H04Q11/0067 ,  H04Q11/0066 ,  H04Q11/0071 ,  H04Q2011/0081

摘要： System and method for providing fast protection in a passive optical network (“PON”) including two central hubs and a plurality of network nodes, wherein the network nodes are connected to a first of the central hubs by a first optical path and to a second of the central hubs by a second optical path. The method comprises setting the first and second central hubs to master mode and slave mode, respectively, such that only the first central hub transmits traffic to and from the network nodes; detecting a failure in the first optical path; exchanging status information between the first and second central hubs; and if no failure has occurred in the second optical path, setting the first and second central hubs to slave mode and master mode, respectively, such that only the second central hub transmits traffic to and from the network nodes.

摘要翻译： 在包括两个中央集线器和多个网络节点的无源光网络（“PON”）中提供快速保护的系统和方法，其中网络节点通过第一光路连接到第一中央集线器，并且连接到第二 的第二光路。 该方法包括将第一和第二中央集线器分别设置为主模式和从模式，使得只有第一中央集线器向网络节点和从网络节点传送业务; 检测第一光路中的故障; 在第一和第二中心枢纽之间交换状态信息; 并且如果在第二光路中没有发生故障，则分别将第一和第二中央集线器设置为从模式和主模式，使得只有第二中央集线器向网络节点传送业务和从网络节点传送业务。

公开(公告)号：US08693482B2

公开(公告)日：2014-04-08

申请号：US11619225

申请日：2007-01-03

申请人： Timucin Ozugur ,  Sig Hal Badt, Jr. ,  Jessy Rouyer ,  Ljubisa Tancevski

发明人： Timucin Ozugur ,  Sig Hal Badt, Jr. ,  Jessy Rouyer ,  Ljubisa Tancevski

IPC分类号： H04L12/54 ,  H04H60/89 ,  H04L29/06

CPC分类号： H04L12/2832 ,  H04L2012/2849

摘要： Apparatus, and an associated method, for facilitating performance of multi-media, and other communication, services at an Ethernet network. A bridge provides communication control operations at the Ethernet network. Audio-video bridge domains are defined at the network. Service discovery messages generated by communication devices of a particular domain are forwarded only to other communication devices of the same domain. Redefinition and reconfiguration of the domains is made, as needed, all best to facilitate performance of the communication service.

摘要翻译： 装置和相关方法，用于促进以太网网络中的多媒体和其他通信服务的性能。 桥提供以太网网络的通信控制操作。 视频网桥域在网络上定义。 由特定域的通信设备生成的服务发现消息仅被转发到同一域的其他通信设备。 根据需要重新定义和重新配置域，以便于通信服务的性能。

公开(公告)号：US20060083255A1

公开(公告)日：2006-04-20

申请号：US10967873

申请日：2004-10-18

申请人： Jessy Rouyer ,  Kamakshi Sridhar ,  Ljubisa Tancevski

发明人： Jessy Rouyer ,  Kamakshi Sridhar ,  Ljubisa Tancevski

IPC分类号： H04L12/28 ,  H04L12/56

CPC分类号： H04L12/462 ,  H04L45/48

摘要： A bridged network system (20). The bridged network system comprises a plurality of bridge nodes (N0-N7). Each bridge node in the plurality of bridge nodes is coupled to communicate with at least one other bridge node in the plurality of nodes. Further, bridge nodes in the plurality of bridge nodes are connected to one another to form a communications-possible line of bridge nodes (N0, N7, N6, N5, N1, N4, N3, N2). Each bridge node comprises circuitry for associating a bridge priority, selected from a plurality of bridge priorities, with the respective bridge node. The plurality of bridge priorities may be arranged in an ordered sequence, but the bridge priorities associated with successive bridge nodes along the communications-possible line of bridge nodes comprises at least two discontinuities (N0/N7; N1/N5; N1/N4) in the ordered sequence.

摘要翻译： 桥接网络系统（20）。 桥接网络系统包括多个桥接节点（N N-N 7）。 多个桥接节点中的每个桥接节点被耦合以与多个节点中的至少一个其他网桥节点进行通信。 此外，多个桥接节点中的桥节点彼此连接以形成桥接节点（N SUB，N N，N N，N N） 6，N 5，N 1，N 4，N 3，N 3， 2 ）。 每个桥节点包括用于将从多个桥优先级中选择的桥优先级与相应的桥节点相关联的电路。 多个桥优先级可以以有序的顺序排列，但是沿着桥接节点的通信可能线路的连续网桥节点相关联的桥优先级包括至少两个不连续性（N N 0 / N _{7 N N 1 N N N N N N N N N N N N N N N N N N N N N N N 序列。}

公开(公告)号：US20050050220A1

公开(公告)日：2005-03-03

申请号：US10648865

申请日：2003-08-26

申请人： Jessy Rouyer ,  Girish Chiruvolu

发明人： Jessy Rouyer ,  Girish Chiruvolu

IPC分类号： H04L12/56 ,  G06F15/16 ,  G06F15/177

CPC分类号： H04L45/02 ,  H04L45/028 ,  H04L45/48

摘要： A network (e.g., RSTP-based network) and method are described herein that can selectively eliminate latencies in the exchange of to-be-transmitted control messages (e.g., BPDUs) between bridges during the re/convergence of the network. The method includes a step of classifying to-be-transmitted control messages as either low-priority control messages or high-priority control messages. The method also has a step of limiting the transmission rate of the low-priority control messages in accordance with a traditional IEEE 802.1 RSTP. And, the method also includes a step of immediately transmitting the high-priority control messages that contain information that contributes to the re/convergence of the network.

摘要翻译： 这里描述了一种网络（例如，基于RSTP的网络）和方法，其可以在网络的重新/收敛期间有选择地消除交换桥间之间的待发送控制消息（例如，BPDU）的延迟。 该方法包括将要发送的控制消息分类为低优先级控制消息或高优先级控制消息的步骤。 该方法还具有根据传统IEEE 802.1 RSTP限制低优先级控制消息的传输速率的步骤。 而且，该方法还包括立即发送包含有助于网络的重新/收敛的信息的高优先级控制消息的步骤。