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1.发明授权System and method for securing an ethernet connectivity fault management (CFM) domain defined on a VLAN 有权在VLAN上定义的以太网连接故障管理（CFM）域的系统和方法公开(公告)号：US07930741B2
公开(公告)日：2011-04-19
申请号：US11221276
申请日：2005-09-06
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。
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公开(公告)号：US08054751B2
公开(公告)日：2011-11-08
申请号：US11024077
申请日：2004-12-28
IPC分类号： H04L1/00
CPC分类号： H04L41/0677 , H04L43/0811 , H04L43/10
摘要： A network environment including a provider network coupled to a first customer network site via a first access link and to a second customer network site via a second access link. The provider network is operable with the IEEE 802.1ag standard for propagating a remote link fault condition via an Ethernet Alarm Indication and Suppression (AIS) frame or a Continuity Check (CC) frame, which is translated into a locally compliant non-IEEE 802.1ag error delivery condition so that a management entity associated with the first customer network site is appropriately alerted.
摘要翻译： 网络环境，包括经由第一接入链路耦合到第一客户网络站点的提供商网络，以及经由第二接入链路到达第二客户网络站点的网络环境。 提供商网络可以通过IEEE 802.1ag标准操作，用于通过以太网报警指示和抑制（AIS）帧或连续性检查（CC）帧传播远程链路故障状况，该帧被转换为本地兼容的非IEEE 802.1ag 错误传送条件，使得与第一客户网络站点相关联的管理实体被适当地提醒。
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3.发明授权Alarm indication and suppression (AIS) mechanism in an ethernet OAM network 有权以太网OAM网络中的告警指示和抑制（AIS）机制公开(公告)号：US07855968B2
公开(公告)日：2010-12-21
申请号：US11023784
申请日：2004-12-28
IPC分类号： G01R31/08
CPC分类号： H04L41/06 , H04L12/2856 , H04L12/462 , H04L41/0681 , H04L43/00 , H04L43/04 , H04L43/0829
摘要： A system and method for propagating fault information in an Ethernet OAM network having multiple levels of OAM domains. An Alarm Indication and Suppression (AIS) frame is generated by a Maintenance Intermediate Point (MIP) node upon detecting a fault condition in a first OAM domain, which is transmitted to one or more Maintenance End Points (MEPs) of the first OAM domain. Upon receiving the AIS frames, the MEP nodes are operable generate another AIS frame for propagating to an adjacent higher level second OAM domain. Responsive to the AIS frame from the lower level first OAM domain, any alarms caused in the second OAM domain due to the fault condition in the first OAM domain are suppressed.
摘要翻译： 一种用于在具有多级OAM域的以太网OAM网络中传播故障信息的系统和方法。 在检测到第一OAM域中的故障状况时，由维护中间点（MIP）节点生成报警指示和抑制（AIS）帧，该第一OAM域被发送到第一OAM域的一个或多个维护端点（MEP）。 在接收到AIS帧时，MEP节点可操作地生成另一个AIS帧，用于传播到相邻的较高级别的第二OAM域。 响应来自较低级别的第一OAM域的AIS帧，由于第一OAM域中的故障状况而导致的在第二OAM域中引起的任何警报被抑制。
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公开(公告)号：US08274899B2
公开(公告)日：2012-09-25
申请号：US11020898
申请日：2004-12-22
IPC分类号： G01R31/08
CPC分类号： H04L41/0879 , H04L41/0803
摘要： A system and method for configuring Maintenance Intermediate Point (MIP) nodes of an Ethernet OAM network based on absolute level indicia as well as relative level indicia encoded in OAM frames generated by Maintenance End Point (MEP) nodes. A first OAM level field in a payload portion of an Ethernet OAM frame is encoded with an absolute OAM level associated with the originating MEP's OAM domain. A second OAM level field is encoded with a relative OAM level indicative of the number of OAM domain levels traversed by the Ethernet OAM frame.
摘要翻译： 一种用于基于绝对级别标记配置以太网OAM网络的维护中间点（MIP）节点以及由维护端点（MEP）节点生成的OAM帧中编码的相对级别标记的系统和方法。 以太网OAM帧的有效载荷部分中的第一个OAM级别字段用与起始MEP的OAM域相关联的绝对OAM级编码。 第二OAM级别字段用指示由以太网OAM帧遍历的OAM域级别的数量的相对OAM级编码。
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5.发明授权Alarm indication and suppression (AIS) mechanism in an Ethernet OAM network 有权以太网OAM网络中的报警指示和抑制（AIS）机制公开(公告)号：US08699353B2
公开(公告)日：2014-04-15
申请号：US12950715
申请日：2010-11-19
IPC分类号： H04J3/14
CPC分类号： H04L41/06 , H04L12/2856 , H04L12/462 , H04L41/0681 , H04L43/00 , H04L43/04 , H04L43/0829
摘要： A system and method for propagating fault information in an Ethernet OAM network having multiple levels of OAM domains. An Alarm Indication and Suppression (AIS) frame is generated by a Maintenance Intermediate Point (MIP) node upon detecting a fault condition in a first OAM domain, which is transmitted to one or more Maintenance End Points (MEPs) of the first OAM domain. Upon receiving the AIS frames, the MEP nodes are operable generate another AIS frame for propagating to an adjacent higher level second OAM domain. Responsive to the AIS frame from the lower level first OAM domain, any alarms caused in the second OAM domain due to the fault condition in the first OAM domain are suppressed.
摘要翻译： 一种用于在具有多级OAM域的以太网OAM网络中传播故障信息的系统和方法。 在检测到第一OAM域中的故障状况时，由维护中间点（MIP）节点生成报警指示和抑制（AIS）帧，该第一OAM域被发送到第一OAM域的一个或多个维护端点（MEP）。 在接收到AIS帧时，MEP节点可操作地生成另一个AIS帧，用于传播到相邻的较高级别的第二OAM域。 响应来自较低级别的第一OAM域的AIS帧，由于第一OAM域中的故障状况而导致的在第二OAM域中引起的任何告警被抑制。
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6.发明申请ALARM INDICATION AND SUPPRESSION (AIS) MECHANISM IN AN ETHERNET OAM NETWORK 有权以太网OAM网络中的报警指示和抑制（AIS）机制公开(公告)号：US20110116363A1
公开(公告)日：2011-05-19
申请号：US12950715
申请日：2010-11-19
IPC分类号： H04L12/26
CPC分类号： H04L41/06 , H04L12/2856 , H04L12/462 , H04L41/0681 , H04L43/00 , H04L43/04 , H04L43/0829
摘要： A system and method for propagating fault information in an Ethernet OAM network having multiple levels of OAM domains. An Alarm Indication and Suppression (AIS) frame is generated by a Maintenance Intermediate Point (MIP) node upon detecting a fault condition in a first OAM domain, which is transmitted to one or more Maintenance End Points (MEPs) of the first OAM domain. Upon receiving the AIS frames, the MEP nodes are operable generate another AIS frame for propagating to an adjacent higher level second OAM domain. Responsive to the AIS frame from the lower level first OAM domain, any alarms caused in the second OAM domain due to the fault condition in the first OAM domain are suppressed.
摘要翻译： 一种用于在具有多级OAM域的以太网OAM网络中传播故障信息的系统和方法。 在检测到第一OAM域中的故障状况时，由维护中间点（MIP）节点生成报警指示和抑制（AIS）帧，该第一OAM域被发送到第一OAM域的一个或多个维护端点（MEP）。 在接收到AIS帧时，MEP节点可操作地生成另一个AIS帧，用于传播到相邻的较高级别的第二OAM域。 响应来自较低级别的第一OAM域的AIS帧，由于第一OAM域中的故障状况而导致的在第二OAM域中引起的任何告警被抑制。
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7.发明授权公开(公告)号：US07512141B2
公开(公告)日：2009-03-31
申请号：US11023716
申请日：2004-12-28
IPC分类号： H04L12/28 , H04J3/26 , G06F15/177
CPC分类号： H04L41/0893
摘要： A domain configuration system and method operable in an Ethernet OAM network having multiple levels of OAM domains. A port of a first end bridge of the network is configured as a first MEP node belonging to a predetermined OAM domain having a particular level. GARP or CC frames are transmitted from the first MEP node in a forward attribute registration process towards the remaining bridges of the network. A port of a second end bridge of the network is configured as a second MEP node of the predetermined OAM domain. In a backward attribute registration process, GARP or CC frames are transmitted from the second MEP node towards the remaining bridges of the network. Responsive to the frame flow, ports in bridges disposed between the first and second end bridges are automatically configured as MIP nodes having the particular level.
摘要翻译： 在具有多层OAM域的以太网OAM网络中可操作的域配置系统和方法。 网络的第一端桥的端口被配置为属于具有特定级别的预定OAM域的第一MEP节点。 在前向属性注册过程中，从第一MEP节点向网络的剩余网桥发送GARP或CC帧。 网络的第二端桥的端口被配置为预定OAM域的第二MEP节点。 在反向属性注册过程中，从第二MEP节点向网络的剩余网桥发送GARP或CC帧。 响应于帧流，布置在第一和第二端桥之间的桥中的端口被自动配置为具有特定级别的MIP节点。
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8.发明申请System and method for securing an Ethernet connectivity fault management (CFM) domain defined on a VLAN 有权用于保护VLAN上定义的以太网连接故障管理（CFM）域的系统和方法公开(公告)号：US20060056414A1
公开(公告)日：2006-03-16
申请号：US11221276
申请日：2005-09-06
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。
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9.发明授权公开(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。
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10.发明授权Diagnostic tool and method for troubleshooting multicast connectivity flow problem(s) in a layer 2 aggregation network 有权针对第2层聚合网络中的组播连接流问题进行故障排除的诊断工具和方法公开(公告)号：US07843845B2
公开(公告)日：2010-11-30
申请号：US11469223
申请日：2006-08-31
IPC分类号： G01R31/08
CPC分类号： H04L12/185 , H04L12/1863 , H04L12/1868 , H04L41/0677 , H04L43/0811 , H04N17/004
摘要： A diagnostic tool and method are described herein that are capable of diagnosing and localizing a multicast connectivity flow fault within a layer 2 aggregation network. In one application, the diagnostic tool and method can be used by a customer service representative to diagnose why a customer cannot receive a television channel even though they can receive other television channels within an IPTV network.
摘要翻译： 本文描述了能够诊断和定位第2层聚合网络内的多播连通性流故障的诊断工具和方法。 在一个应用中，诊断工具和方法可以被客户服务代表用来诊断为什么客户不能接收电视频道，即使他们可以在IPTV网络内接收其他电视频道。
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