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51. 发明授权

US07881314B2 Network device providing access to both layer 2 and layer 3 services on a single physical interface 有权
标题翻译：网络设备提供对单个物理接口上的第2层和第3层服务的访问
公开(公告)号：US07881314B2
公开(公告)日：2011-02-01
申请号：US11415008
申请日：2006-05-01
申请人： Chiara Regale , Ali Sajassi , Vijay Nain , Shobana Biederman , Robert G. Pothier
发明人： Chiara Regale , Ali Sajassi , Vijay Nain , Shobana Biederman , Robert G. Pothier
IPC分类号： H04L12/28
CPC分类号： H04L12/465 , H04L12/2856 , H04L45/50
摘要： A network node includes a first port and a second port, the second port being operable to carry a first type of data traffic over a main physical interface, the first type of data traffic including Layer 2 services. The second port is operable to simultaneously carry a second type of data traffic over a sub-interface of the main physical interface. The second type of data traffic consisting of Layer 3 services that include point-to-point (P2P), point-to-multipoint (P2MP), and multipoint services.
摘要翻译：网络节点包括第一端口和第二端口，所述第二端口可操作以在主物理接口上承载第一类型的数据业务，所述第一类型的数据业务包括第2层服务。第二端口可操作以在主物理接口的子接口上同时携带第二类型的数据业务。第二类数据流量由包括点对点（P2P），点对多点（P2MP）和多点服务的第3层服务组成。

52. 发明授权

US07843917B2 Half-duplex multicast distribution tree construction 有权
标题翻译：半双工组播分布树构建
公开(公告)号：US07843917B2
公开(公告)日：2010-11-30
申请号：US11983678
申请日：2007-11-08
申请人： Frank Brockners , Ali Sajassi , Robert James Goguen , Ijsbrand Wijnands
发明人： Frank Brockners , Ali Sajassi , Robert James Goguen , Ijsbrand Wijnands
IPC分类号： H04L12/28
CPC分类号： H04L45/00 , H04L45/16 , H04L45/48 , H04L45/50 , H04L45/507
摘要： In one embodiment, a method includes sending upstream to a nearest neighbor node, by a Client Label Switched Router (LSR), a downstream label map message of a Server-Forwarding Equivalence Class type (S-FEC-DOWN). In response to the S-FEC-DOWN, a downstream forwarding state from the nearest neighbor node to the Client LSR is established. An upstream label map message of a Client-Forwarding Equivalence Class type (C-FEC UP) is received from the nearest neighbor node. An upstream forwarding state corresponding to the C-FEC UP is then established by the Client LSR.
摘要翻译：在一个实施例中，一种方法包括由客户端标签交换路由器（LSR）向服务器转发等价类型（S-FEC-DOWN）的下游标签映射消息向上游发送最近邻居节点。响应S-FEC-DOWN，建立从最近邻节点到客户端LSR的下游转发状态。从最近邻节点接收到客户转发等价类型（C-FEC UP）的上游标签映射消息。然后由客户端LSR建立与C-FEC UP对应的上行转发状态。

53. 发明授权

US07751399B2 Scalable virtual private local area network service 有权
标题翻译：可扩展的虚拟专用局域网服务
公开(公告)号：US07751399B2
公开(公告)日：2010-07-06
申请号：US11834663
申请日：2007-08-06
申请人： Luca Martini , Ali Sajassi , William Mark Townsley , Richard Mandfred Pruss
发明人： Luca Martini , Ali Sajassi , William Mark Townsley , Richard Mandfred Pruss
IPC分类号： H04L12/28
CPC分类号： H04L12/4641 , H04L45/50
摘要： In one embodiment, a method includes receiving a data link layer packet, such as an Ethernet packet, at a local provider edge node in a provider network from a first customer edge node of multiple customer edge nodes connected directly to the local provider edge node. A tunnel data packet for a particular tunneling protocol is generated. The tunnel data packet includes tunnel data that indicates tunnel termination at a different provider edge in the provider network. The tunnel data packet also includes customer identifier data and the data link layer packet. The customer identifier data uniquely indicates a customer associated with the first customer edge node. The tunnel data packet is sent over the provider network.
摘要翻译：在一个实施例中，一种方法包括从提供商网络中的本地提供商边缘节点接收来自直接连接到本地提供商边缘节点的多个客户边缘节点的第一客户边缘节点的数据链路层分组，诸如以太网分组。生成用于特定隧道协议的隧道数据包。隧道数据包包括指示在提供商网络中的不同提供商边缘处的隧道终止的隧道数据。隧道数据分组还包括客户标识符数据和数据链路层分组。客户标识符数据唯一地指示与第一客户边缘节点相关联的顾客。隧道数据包通过提供商网络发送。

54. 发明申请

US20100061379A1 SYSTEM AND METHOD FOR PROVIDING SUPPORT FOR MULTIPOINT L2VPN SERVICES IN DEVICES WITHOUT LOCAL BRIDGING 有权
标题翻译：在没有局部桥接的设备中为多个L2VPN服务提供支持的系统和方法
公开(公告)号：US20100061379A1
公开(公告)日：2010-03-11
申请号：US12620390
申请日：2009-11-17
申请人： Harshavardhan Parandekar , Ali Sajassi , Sanjay Dhar
发明人： Harshavardhan Parandekar , Ali Sajassi , Sanjay Dhar
IPC分类号： H04L12/28
CPC分类号： H04L12/465 , H04L12/2859 , H04L12/2898
摘要： A network device has a network interface to allow the device to send and receive traffic across a network. The device also has a cable connection to allow the device to exchange data with at least one cable modem and a processor to associate a cable interface and cable service identifier with a cable modem; receive a packet from the cable modem; and insert a layer 2 network identifier, the identifier comprising two service provider VLAN (SP-VLAN) tags, into the packet. The processor in the network device identifies a virtual trunk interface based on the outer SP-VLAN tag and identifies the virtual private network based on the inner SP-VLAN tag.
摘要翻译：网络设备具有允许设备通过网络发送和接收流量的网络接口。该设备还具有电缆连接，以允许设备与至少一个电缆调制解调器和处理器交换数据，以将电缆接口和有线服务标识符与电缆调制解调器相关联; 从电缆调制解调器接收数据包; 并将包含两个服务提供商VLAN（SP-VLAN）标签的标识符插入到分组中。网络设备中的处理器基于外部SP-VLAN标签识别虚拟中继接口，并根据内部SP-VLAN标签识别虚拟专用网络。

55. 发明授权

US07644317B1 Method and apparatus for fault detection/isolation in metro Ethernet service 有权
标题翻译：城域以太网业务故障检测/隔离方法及装置
公开(公告)号：US07644317B1
公开(公告)日：2010-01-05
申请号：US10858810
申请日：2004-06-02
申请人： Ali Sajassi , Norman W. Finn
发明人： Ali Sajassi , Norman W. Finn
IPC分类号： G06F11/00
CPC分类号： H04L41/0659 , H04L12/2852 , H04L12/462 , H04L43/10
摘要： Apparatus and method of detecting a fault in a network service includes an Ethernet access network domain in which a heartbeat message is broadcast at a periodic interval by each of a plurality of edge devices associated with an instance of the network service. Each of the edge devices also receives the heartbeat messages broadcast at the periodic interval from other edge devices. A fault occurrence is identified when the edge device fails to receive an expected heartbeat message at the periodic interval from one of the other edge devices.
摘要翻译：检测网络服务中的故障的装置和方法包括：以太网接入网络域，其中通过与网络服务的实例相关联的多个边缘设备中的每一个以周期性间隔广播心跳消息。每个边缘设备还接收从其他边缘设备以周期性间隔广播的心跳消息。当边缘设备未能以其他边缘设备之一的周期性间隔接收到预期的心跳消息时，会发现故障发生。

56. 发明申请

US20090034413A1 Redundancy for point-to-multipoint and multipoint-to-multipoint ethernet virtual connections 有权
标题翻译：点对多点和多点到多点以太网虚拟连接的冗余
公开(公告)号：US20090034413A1
公开(公告)日：2009-02-05
申请号：US11881917
申请日：2007-07-30
申请人： Ali Sajassi , Samer Salam
发明人： Ali Sajassi , Samer Salam
IPC分类号： H04L12/26
CPC分类号： H04L12/1863 , H04L12/413 , H04L41/0668 , H04L41/0677
摘要： A method and system for redundancy in Ethernet Virtual Connections (EVCs) are disclosed. In one embodiment, a method includes transmitting continuity check messages from a node in an Ethernet Virtual Connection connecting at least one root node and a plurality of leaf nodes in a point-to-multipoint or multipoint-to-multipoint connection, identifying a failure in a primary path between the root node and the leaf nodes, switching to a backup path, and advertising the switching to the backup path to at least one node.
摘要翻译：公开了以太网虚拟连接（EVC）中冗余的方法和系统。在一个实施例中，一种方法包括：从连接至少一个根节点和多个叶节点的点对多点或多点到多点连接中的以太网虚拟连接中的节点发送连续性检查消息，识别故障根节点和叶节点之间的主要路径，切换到备份路径，并且向至少一个节点通告到备份路径的切换。

57. 发明申请

US20080267198A1 Support of C-tagged service interface in an IEEE 802.1ah bridge 有权
标题翻译：支持IEEE 802.1ah网桥中的C-tagged业务接口
公开(公告)号：US20080267198A1
公开(公告)日：2008-10-30
申请号：US11796636
申请日：2007-04-27
申请人： Ali Sajassi
发明人： Ali Sajassi
IPC分类号： H04L12/28
CPC分类号： H04L12/4625
摘要： In one embodiment, a Provider Backbone Edge Bridge (BEB) IEEE 802.1ah compliant apparatus includes a B-component having one or more provider backbone ports, and a first I-component coupled with the B-component, the first I-component being configured to support a S-tagged interface. A second I-component is also coupled with the B-component, the second I-component being configured to support a C-tagged interface, thereby facilitating direct connection to a device operating in compliance with IEEE 802.1Q specification. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure.
摘要翻译：在一个实施例中，提供商骨干边缘桥（BEB）IEEE 802.1ah兼容设备包括具有一个或多个提供商主干端口的B组件和与该B组件耦合的第一I组件，该第一I组件被配置以支持S-tagged接口。第二I分量还与B分量耦合，第二I分量被配置为支持C标记的接口，从而有助于直接连接到符合IEEE 802.1Q规范的设备。要强调的是，该摘要被提供以符合要求抽象的规则，允许搜索者或其他读者快速确定技术公开的主题。

58. 发明申请

US20070253432A1 Network device providing access to both layer 2 and layer 3 services on a single physical interface 有权
标题翻译：网络设备提供对单个物理接口上的第2层和第3层服务的访问
公开(公告)号：US20070253432A1
公开(公告)日：2007-11-01
申请号：US11415008
申请日：2006-05-01
申请人： Chiara Regale , Ali Sajassi , Vijay Nain , Shobana Biederman , Robert Pothier
发明人： Chiara Regale , Ali Sajassi , Vijay Nain , Shobana Biederman , Robert Pothier
IPC分类号： H04L12/56
CPC分类号： H04L12/465 , H04L12/2856 , H04L45/50
摘要： A network node includes a first port and a second port, the second port being operable to carry a first type of data traffic over a main physical interface, the first type of data traffic including Layer 2 services. The second port is operable to simultaneously carry a second type of data traffic over a sub-interface of the main physical interface. The second type of data traffic consisting of Layer 3 services that include point-to-point (P2P), point-to-multipoint (P2MP), and multipoint services. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
摘要翻译：网络节点包括第一端口和第二端口，所述第二端口可操作以在主物理接口上承载第一类型的数据业务，所述第一类型的数据业务包括第2层服务。第二端口可操作以在主物理接口的子接口上同时携带第二类型的数据业务。第二类数据流量由包括点对点（P2P），点对多点（P2MP）和多点服务的第3层服务组成。要强调的是，该摘要被提供以符合要求抽象的规则，允许搜索者或其他读者快速确定技术公开的主题。提交它的理解是，它不会用于解释或限制权利要求的范围或含义。

59. 发明申请

US20060245438A1 Metro ethernet network with scaled broadcast and service instance domains 有权
标题翻译：具有扩展广播和服务实例域的Metro以太网网络
公开(公告)号：US20060245438A1
公开(公告)日：2006-11-02
申请号：US11117016
申请日：2005-04-28
申请人： Ali Sajassi , Norman Finn
发明人： Ali Sajassi , Norman Finn
IPC分类号： H04L12/56
CPC分类号： H04L69/22 , H04L12/18 , H04L12/2852 , H04L12/4645 , H04L12/465 , H04L12/4662 , H04L12/4691 , H04L45/16 , H04L49/351
摘要： A method of operation for a provider edge device of a core network includes receiving a customer frame from an access network; the customer frame having a first Virtual Local Area Network (VLAN) tag of a first predetermined bit length. The first VLAN tag including a service instance identifier. The service instance identifier of the first VLAN tag is then mapped into a second VLAN tag of a second predetermined bit length greater than the first predetermined bit length. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).
摘要翻译：核心网络的提供商边缘设备的操作方法包括从接入网络接收客户帧; 所述客户帧具有第一预定位长度的第一虚拟局域网（VLAN）标签。第一个VLAN标签包含服务实例标识符。然后将第一VLAN标签的服务实例标识符映射到大于第一预定位长度的第二预定位长度的第二VLAN标签。要强调的是，该摘要被提供以符合要求抽象的规则，允许搜索者或其他读者快速确定技术公开内容的主题。提交它的理解是，它不会用于解释或限制权利要求的范围或含义。 37 CFR 1.72（b）。

60. 发明授权

US09350665B2 Congestion mitigation and avoidance 有权
标题翻译：阻塞和避免拥塞
公开(公告)号：US09350665B2
公开(公告)日：2016-05-24
申请号：US13601957
申请日：2012-08-31
申请人： Derek Man-Kit Yeung , Ali Sajassi , Hong Zhang
发明人： Derek Man-Kit Yeung , Ali Sajassi , Hong Zhang
IPC分类号： H04J1/16 , H04L12/803
CPC分类号： H04L47/125
摘要： In one embodiment, a method is provided for congestion mitigation. In this method, a congestion level of data flows along a path is monitored relative to a threshold. Here, each data flow is associated with a flow identifier. Based on detection that the congestion level exceeds the threshold, the flow identifier of a number (e.g., one or more) of the data flows is changed to a different flow identifier. This change results in the number of the data flows redirected to a different path. In an alternate embodiment, another method is provided for congestion avoidance. In this method, a data flow transmitted along a single path is received, and the data flow is split into multiple micro data flows. A different flow identifier is then assigned to each micro data flow. This change results in the multiple micro data flows distributed along multiple different paths.
摘要翻译：在一个实施例中，提供了一种用于拥塞缓解的方法。在该方法中，相对于阈值监视沿着路径的数据流的拥塞级别。这里，每个数据流与流标识符相关联。基于拥塞级别超过阈值的检测，数据流（例如，一个或多个）的流标识被改变为不同的流标识符。此更改导致重定向到不同路径的数据流的数量。在替代实施例中，提供了另一种用于拥塞避免的方法。在该方法中，接收沿着单个路径发送的数据流，并将数据流分割为多个微数据流。然后将不同的流标识符分配给每个微数据流。这种变化导致沿着多个不同路径分布的多个微数据流。

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