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1. 发明授权

US08804534B2 Interworking between MPLS/IP and Ethernet OAM mechanisms 有权
标题翻译： MPLS / IP和以太网OAM机制之间的互通
公开(公告)号：US08804534B2
公开(公告)日：2014-08-12
申请号：US11804615
申请日：2007-05-19
申请人： Samer M. Salam , Thomas D. Nadeau , Luca Martini , Ali Sajassi
发明人： Samer M. Salam , Thomas D. Nadeau , Luca Martini , Ali Sajassi
IPC分类号： H04L1/00 , H04L12/24
CPC分类号： H04L41/06 , H04L41/0226 , H04L45/50 , H04L67/28 , H04L67/2861 , H04L69/40
摘要： In one embodiment, a method includes receiving, by a provider edge (PE) device, a transport layer status message indicative of a defect on a pseudowire (PW) running across a core of a service provider (SP) network. The status message is translated to a service layer message indicative of the defect. The service layer message is then transmitted across an access domain of the SP network.
摘要翻译：在一个实施例中，一种方法包括由提供者边缘（PE）设备接收指示在服务提供商（SP）网络的核心上运行的伪线（PW）上的缺陷的传输层状态消息。状态消息被转换为指示缺陷的服务层消息。服务层消息然后通过SP网络的接入域传输。

2. 发明申请

US20080285466A1 Interworking between MPLS/IP and Ethernet OAM mechanisms 有权
标题翻译： MPLS / IP和以太网OAM机制之间的互通
公开(公告)号：US20080285466A1
公开(公告)日：2008-11-20
申请号：US11804615
申请日：2007-05-19
申请人： Samer M. Salam , Thomas D. Nadeau , Luca Martini , Ali Sajassi
发明人： Samer M. Salam , Thomas D. Nadeau , Luca Martini , Ali Sajassi
IPC分类号： H04L12/26 , H04L12/24
CPC分类号： H04L41/06 , H04L41/0226 , H04L45/50 , H04L67/28 , H04L67/2861 , H04L69/40
摘要： In one embodiment, a method includes receiving, by a provider edge (PE) device, a transport layer status message indicative of a defect on a pseudowire (PW) running across a core of a service provider (SP) network. The status message is translated to a service layer message indicative of the defect. The service layer message is then transmitted across an access domain of the SP network. 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，一种方法包括由提供商边缘（PE）设备接收指示在跨服务提供商（SP）网络的核心运行的伪线（PW）上的缺陷的传输层状态消息。状态消息被转换为指示缺陷的服务层消息。服务层消息然后通过SP网络的接入域传输。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。

3. 发明申请

US20130121150A1 Modifying Backbone Service Instance Identifiers based on an Identified Flow of Associated Frames 有权
标题翻译：基于相关帧的识别流修改骨干服务实例标识符
公开(公告)号：US20130121150A1
公开(公告)日：2013-05-16
申请号：US13294164
申请日：2011-11-10
申请人： Ali Sajassi , Samer M. Salam
发明人： Ali Sajassi , Samer M. Salam
IPC分类号： H04L12/56 , H04L12/26
CPC分类号： H04L12/4633 , H04L12/462 , H04L12/4662 , H04L47/24 , H04L47/2483
摘要： In one embodiment, backbone service instance identifiers (I-SIDs) of backbone frames are modified based on flow identification of frames encapsulated therein to induce entropy into the headers of the backbone frames. Backbone packet switching devices use the modified service instance identifier to load balance the corresponding frame through the backbone network. At an exit point of the backbone network, the original backbone service instance identifier (I-SID) associated with a frame encapsulated in a backbone frame is recovered from the modified service instance identifier, with this recovery typically including determining the flow identification of the frame encapsulated in the backbone frame.
摘要翻译：在一个实施例中，骨干帧的骨干服务实例标识符（I-SID）基于其中封装的帧的流标识被修改，以将熵引入到主干帧的报头中。骨干分组交换设备使用经过修改的业务实例标识符通过骨干网对相应帧进行负载均衡。在骨干网的出口处，从被修改的服务实例标识符中恢复与被封装在骨干帧中的帧相关联的原始骨干服务实例标识符（I-SID），该恢复通常包括确定帧的流标识封装在骨干框架中。

4. 发明申请

US20120213222A1 Single-homing and Active-Active Multi-homing in a Virtual Private LAN Service 有权
标题翻译：虚拟专用LAN服务中的单归属和主动主动多重归属
公开(公告)号：US20120213222A1
公开(公告)日：2012-08-23
申请号：US13031909
申请日：2011-02-22
申请人： Clarence Filsfils , Sami Boutros , Samer M. Salam , Ali Sajassi
发明人： Clarence Filsfils , Sami Boutros , Samer M. Salam , Ali Sajassi
IPC分类号： H04L12/28
CPC分类号： H04L12/4641 , H04L45/16 , H04L45/50 , H04L45/68
摘要： In one embodiment, single-homing and active-active multi-homing is provided in a Virtual Private LAN Service (VPLS). A customer edge node actively communicates frames of a same Virtual Private Network (VPN) instance with two or more VPLS nodes of a VPLS network. The VPLS nodes are configured to appropriately forward frames throughout the VPLS network: without looping of a frame sent by the same external node back to the same external node, without flooding multiple copies of a frame to the same external node, and while performing learning of addresses in forwarding tables of said VPLS nodes such that said forwarding tables of said VPLS nodes converge despite frames of the same LAN service being received by said at least two of said VPLS nodes from the same external node.
摘要翻译：在一个实施例中，在虚拟专用LAN服务（VPLS）中提供单归属和主动主动多归位。客户边缘节点主动将相同虚拟专用网（VPN）实例的帧与VPLS网络的两个或多个VPLS节点进行通信。 VPLS节点被配置为在整个VPLS网络中适当地转发帧：不将相同外部节点发送的帧循环回相同的外部节点，而不会将帧的多个拷贝淹没到同一个外部节点，同时执行学习在所述VPLS节点的转发表中的地址，使得所述VPLS节点的所述转发表收敛，尽管所述至少两个所述VPLS节点从相同外部节点接收到相同LAN服务的帧。

5. 发明申请

US20090196298A1 Transportation of IEEE 802.1ah Frames over Multiprotocol Label Switching Pseudowires for Virtual Private LAN Services 有权
标题翻译：通过多协议标签交换伪虚拟专用LAN服务的IEEE 802.1ah帧的传输
公开(公告)号：US20090196298A1
公开(公告)日：2009-08-06
申请号：US12025998
申请日：2008-02-05
申请人： Ali Sajassi , Samer M. Salam , Christopher Y. Metz
发明人： Ali Sajassi , Samer M. Salam , Christopher Y. Metz
IPC分类号： H04L12/56
CPC分类号： H04L12/4658 , H04L12/4662 , H04L45/50 , H04L45/68
摘要： Disclosed are, inter alia, methods, apparatus, computer-storage media, mechanisms, and means for transportation of IEEE 802.1ah frames over Multiprotocol Label Switching (MPLS) pseudowires for Virtual Private LAN Services (VPLS). The IEEE 802.1ah frames include a corresponding B-VLAN tag, while the MPLS packets including these frames do not include the corresponding B-VLAN tag, and disclosed are methods and apparatus for performing such translation.
摘要翻译：公开了用于通过用于虚拟专用LAN服务（VPLS）的多协议标签交换（MPLS）伪线传输IEEE 802.1ah帧的方法，装置，计算机存储介质，机制和装置。 IEEE 802.1ah帧包括对应的B-VLAN标签，而包括这些帧的MPLS分组不包括相应的B-VLAN标签，并且公开了用于执行这种转换的方法和装置。

6. 发明授权

US08503329B2 Signaling of attachment circuit status and automatic discovery of inter-chassis communication peers 有权
公开(公告)号：US08503329B2
公开(公告)日：2013-08-06
申请号：US12536427
申请日：2009-08-05
申请人： John J. Mullooly , Ali Sajassi , Pradosh K. Mohapatra , Samer M. Salam
发明人： John J. Mullooly , Ali Sajassi , Pradosh K. Mohapatra , Samer M. Salam
IPC分类号： H04L12/28
CPC分类号： H04L49/15 , H04L45/04 , H04L45/58
摘要： In an embodiment, a method of signaling status at a routing device is provided. In this method, the routing device establishes an inter-chassis control plane channel session with a remote routing device. Here, the routing device and the remote routing device are linked to a multi-homed routing device. The routing device then synchronizes with the remote routing device by way of the inter-chassis control plane channel session to identify a state of a link from the routing device to the multi-homed routing device. The state of the link is thereafter advertised by way of Border Gateway Protocol (BGP). Additionally, a method of discovering inter-chassis communication peers via BGP between the first and remote routing devices is provided.

7. 发明申请

US20120106360A1 DUAL-HOMING FOR ETHERNET LINE SERVICES 有权
标题翻译：以太网线服务的双重兴趣
公开(公告)号：US20120106360A1
公开(公告)日：2012-05-03
申请号：US12914722
申请日：2010-10-28
申请人： ALI SAJASSI , Samer M. Salam
发明人： ALI SAJASSI , Samer M. Salam
IPC分类号： H04L12/26
CPC分类号： H04L12/437 , H04L45/22 , H04L45/28 , H04L45/68
摘要： Techniques are described which provide mechanisms for dual-homing an access ring for virtual private wire service (VPWS) Ethernet line (E-Line) services. The mechanism may provide resiliency against access ring failures and offer a restoration time of 50 msec upon failure. A method to provide such resiliency may generally include determining, at a first ring port of an access node, a ring failure in an Ethernet ring. Upon determining the first ring port of the access node is not situated on a same side of the Ethernet ring as a node designated as a ring protection link (RPL) owner, a message is transmitted on a second ring port of the access node towards a provider edge (PE) node. The message is used to activate pseudowires (PWs) at the PE node for virtual local area networks (VLANs) of the access node.
摘要翻译：描述了提供用于虚拟专线服务（VPWS）以太网线路（E-Line）服务的双归属接入环的机制的技术。该机制可以提供针对接入环故障的弹性，并且在故障时提供恢复时间为50毫秒。提供这种弹性的方法通常可以包括在接入节点的第一环形端口处确定以太环中的环路故障。在确定接入节点的第一环形端口不与作为指定为环形保护链路（RPL）所有者的节点位于以太网环的同一侧上时，消息在接入节点的第二环形端口上朝向提供商边缘（PE）节点。该消息用于在接入节点的虚拟局域网（VLAN）的PE节点处激活伪线（PW）。

8. 发明申请

US20110032945A1 SIGNALING OF ATTACHMENT CIRCUIT STATUS AND AUTOMATIC DISCOVERY OF INTER-CHASSIS COMMUNICATION PEERS 有权
标题翻译：附件电路状态信号和内部通信对等体的自动发现
公开(公告)号：US20110032945A1
公开(公告)日：2011-02-10
申请号：US12536427
申请日：2009-08-05
申请人： John Joseph Mullooly , Ali Sajassi , Pradosh Kumar Mohapatra , Samer M. Salam
发明人： John Joseph Mullooly , Ali Sajassi , Pradosh Kumar Mohapatra , Samer M. Salam
IPC分类号： H04L12/56
CPC分类号： H04L49/15 , H04L45/04 , H04L45/58
摘要： In an embodiment, a method of signaling status at a routing device is provided. In this method, the routing device establishes an inter-chassis control plane channel session with a remote routing device. Here, the routing device and the remote routing device are linked to a multi-homed routing device. The routing device then synchronizes with the remote routing device by way of the inter-chassis control plane channel session to identify a state of a link from the routing device to the multi-homed routing device. The state of the link is thereafter advertised by way of Border Gateway Protocol (BGP). Additionally, a method of discovering inter-chassis communication peers via BGP between the first and remote routing devices is provided.
摘要翻译：在一个实施例中，提供了一种在路由设备处发信号通知状态的方法。在该方法中，路由设备与远程路由设备建立机柜间控制平面信道会话。这里，路由设备和远程路由设备链接到多宿主路由设备。然后，路由设备通过机架间控制平面信道会话与远程路由设备同步，以识别从路由设备到多归属路由设备的链路的状态。之后通过边界网关协议（BGP）通告链路的状态。另外，提供了一种通过第一和远程路由设备之间的BGP发现机架间通信对等体的方法。

9. 发明授权

US08644134B2 Dual-homing for ethernet line services 有权
标题翻译：以太网线路业务的双归属
公开(公告)号：US08644134B2
公开(公告)日：2014-02-04
申请号：US12914722
申请日：2010-10-28
申请人： Ali Sajassi , Samer M. Salam
发明人： Ali Sajassi , Samer M. Salam
IPC分类号： G01R31/08
CPC分类号： H04L12/437 , H04L45/22 , H04L45/28 , H04L45/68
摘要： Techniques are described which provide mechanisms for dual-homing an access ring for virtual private wire service (VPWS) Ethernet line (E-Line) services. The mechanism may provide resiliency against access ring failures and offer a restoration time of 50 msec upon failure. A method to provide such resiliency may generally include determining, at a first ring port of an access node, a ring failure in an Ethernet ring. Upon determining the first ring port of the access node is not situated on a same side of the Ethernet ring as a node designated as a ring protection link (RPL) owner, a message is transmitted on a second ring port of the access node towards a provider edge (PE) node. The message is used to activate pseudowires (PWs) at the PE node for virtual local area networks (VLANs) of the access node.
摘要翻译：描述了提供用于虚拟专线服务（VPWS）以太网线路（E-Line）服务的双归属接入环的机制的技术。该机制可以提供针对接入环故障的弹性，并且在故障时提供恢复时间为50毫秒。提供这种弹性的方法通常可以包括在接入节点的第一环形端口处确定以太网环中的环路故障。在确定接入节点的第一环形端口不与作为指定为环形保护链路（RPL）所有者的节点位于以太网环的同一侧上时，消息在接入节点的第二环形端口上朝向提供商边缘（PE）节点。该消息用于在接入节点的虚拟局域网（VLAN）的PE节点处激活伪线（PW）。

10. 发明授权

US08385353B2 Connectivity fault management (CFM) auto-provisioning using virtual private LAN service (VPLS) auto-discovery 有权
标题翻译：使用虚拟专用LAN服务（VPLS）自动发现的连接故障管理（CFM）自动配置
公开(公告)号：US08385353B2
公开(公告)日：2013-02-26
申请号：US12409314
申请日：2009-03-23
申请人： Samer M. Salam , Ali Sajassi , Samuel Henderson
发明人： Samer M. Salam , Ali Sajassi , Samuel Henderson
IPC分类号： H04L12/28
CPC分类号： H04L41/0659 , H04L12/4641 , H04L12/4675 , H04L43/0811
摘要： Connectivity Fault Management (CFM) auto-provisioning using Virtual Private LAN Service (VPLS) auto-discovery is described. In one embodiment, an apparatus comprises VPLS logic and configuration logic. The VPLS logic is operable at least to receive and send configuration information for a VPLS instance, where the configuration information comprises: a first value that uniquely identifies the VPLS instance; and a plurality of second values that respectively and uniquely identify a plurality of network elements that are operable to provide the VPLS instance. The configuration logic is operable at least to automatically configure, based on the first value and on the plurality of second values, a CFM association and a local maintenance endpoint (MEP) for the VPLS instance on the apparatus.
摘要翻译：描述了使用虚拟专用LAN服务（VPLS）自动发现的连接故障管理（CFM）自动配置。在一个实施例中，一种装置包括VPLS逻辑和配置逻辑。所述VPLS逻辑至少可操作地接收和发送VPLS实例的配置信息，其中所述配置信息包括：唯一地标识所述VPLS实例的第一值; 以及分别唯一地识别可操作以提供VPLS实例的多个网络元件的多个第二值。所述配置逻辑至少可操作地基于所述第一值和所述多个第二值自动配置所述设备上的VPLS实例的CFM关联和本地维护端点（MEP）。

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