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公开(公告)号：US20070025276A1
公开(公告)日：2007-02-01
申请号：US11296149
申请日：2005-12-07
申请人： John Zwiebel , Ali Sajassi , Dino Farinacci , Daniel Alvarez
发明人： John Zwiebel , Ali Sajassi , Dino Farinacci , Daniel Alvarez
IPC分类号： H04L12/28
CPC分类号： H04L45/00 , H04L12/1836 , H04L12/185 , H04L45/16 , H04L45/48 , H04L45/50
摘要： A mechanism that provides congruent forwarding paths for unicast and multicast data traffic over a service provider core network includes issuing, by a receiver edge node, a request to join a multicast tree structure. A unicast path from the receiver edge node to a source node of the provider network is then established using a special message that contains an identifier. The identifier allows the unicast path through the core network to be aligned with the multicast tree structure. 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： 通过服务提供商核心网络为单播和组播数据流量提供一致的转发路径的机制包括由接收者边缘节点发出加入多播树结构的请求。 然后使用包含标识符的特殊消息来建立从接收器边缘节点到提供商网络的源节点的单播路径。 标识符允许通过核心网络的单播路径与多播树结构对齐。 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。
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2.发明申请Optimal bridging over MPLS / IP through alignment of multicast and unicast paths 有权通过组播和单播路径对齐，实现MPLS / IP上的最佳桥接公开(公告)号：US20070025277A1
公开(公告)日：2007-02-01
申请号：US11296550
申请日：2005-12-07
申请人： Ali Sajassi , Dino Farinacci , John Zwiebel , Daniel Alvarez
发明人： Ali Sajassi , Dino Farinacci , John Zwiebel , Daniel Alvarez
IPC分类号： H04L12/28
摘要： A provider edge (PE) node of a network operates to send a trace path message over the network to a receiver PE node, the trace path message recording a list of intermediate nodes of a unicast path from the PE node to the receiver PE node; and receive a join message initiated from the receiver PE node, the join message using the list to propagate to the source PE node through the intermediate nodes such that a branch of a multicast tree is aligned with the unicast path. 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： 网络的提供者边缘（PE）节点操作以通过网络向接收者PE节点发送跟踪路径消息，跟踪路径消息记录从PE节点到接收者PE节点的单播路径的中间节点列表; 并接收从接收者PE节点发起的加入消息，使用该列表的加入消息通过中间节点传播到源PE节点，使得多播树的分支与单播路径对齐。 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）。
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公开(公告)号：US07855950B2
公开(公告)日：2010-12-21
申请号：US11296149
申请日：2005-12-07
申请人： John M. Zwiebel , Ali Sajassi , Dino Farinacci , Daniel Alvarez
发明人： John M. Zwiebel , Ali Sajassi , Dino Farinacci , Daniel Alvarez
CPC分类号： H04L45/00 , H04L12/1836 , H04L12/185 , H04L45/16 , H04L45/48 , H04L45/50
摘要： A mechanism that provides congruent forwarding paths for unicast and multicast data traffic over a service provider core network includes issuing, by a receiver edge node, a request to join a multicast tree structure. A unicast path from the receiver edge node to a source node of the provider network is then established using a special message that contains an identifier. The identifier allows the unicast path through the core network to be aligned with the multicast tree structure. 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： 通过服务提供商核心网络为单播和组播数据流量提供一致的转发路径的机制包括由接收者边缘节点发出加入多播树结构的请求。 然后使用包含标识符的特殊消息来建立从接收器边缘节点到提供商网络的源节点的单播路径。 标识符允许通过核心网络的单播路径与多播树结构对齐。 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。
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4.发明授权Optimal bridging over MPLS/IP through alignment of multicast and unicast paths 有权通过组播和单播路径对齐，实现MPLS / IP上的最佳桥接公开(公告)号：US08169924B2
公开(公告)日：2012-05-01
申请号：US11296550
申请日：2005-12-07
申请人： Ali Sajassi , Dino Farinacci , John M. Zwiebel , Daniel Alvarez
发明人： Ali Sajassi , Dino Farinacci , John M. Zwiebel , Daniel Alvarez
IPC分类号： G01R31/08
摘要： A provider edge (PE) node of a network operates to send a trace path message over the network to a receiver PE node, the trace path message recording a list of intermediate nodes of a unicast path from the PE node to the receiver PE node; and receive a join message initiated from the receiver PE node, the join message using the list to propagate to the source PE node through the intermediate nodes such that a branch of a multicast tree is aligned with the unicast path. 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： 网络的提供者边缘（PE）节点操作以通过网络向接收者PE节点发送跟踪路径消息，跟踪路径消息记录从PE节点到接收者PE节点的单播路径的中间节点列表; 并接收从接收者PE节点发起的加入消息，使用该列表的加入消息通过中间节点传播到源PE节点，使得多播树的分支与单播路径对齐。 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）。
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5.发明授权公开(公告)号：US08988984B2
公开(公告)日：2015-03-24
申请号：US13021530
申请日：2011-02-04
IPC分类号： H04L12/26 , H04L12/715 , H04L12/703
摘要： In one embodiment, a network device may participate in an election process to elect one of two or more Provider Edge devices of a Redundancy Group to be a Designated Forwarder for the Redundancy Group, where the Redundancy Group is in a Service Provider network, and where the Redundancy Group serves a Customer Edge device of a customer network. The network device may forward multi-destination traffic to the Customer Edge device according to whether the network device is elected to be the Designated Forwarder for the Redundancy Group. Multi-destination traffic may include multicast traffic, broadcast traffic, or destination unknown unicast traffic.
摘要翻译： 在一个实施例中，网络设备可以参与选举过程，以选择冗余组的两个或更多个提供者边缘设备之一作为冗余组的指定转发器，其中冗余组在服务提供商网络中，并且其中 冗余组为客户网络的客户端设备提供服务。 根据网络设备是否被选为冗余组的指定转发器，网络设备可以将多目标流量转发到客户边缘设备。 多目标流量可以包括多播流量，广播流量或目的地未知单播流量。
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6.发明申请公开(公告)号：US20140198795A1
公开(公告)日：2014-07-17
申请号：US14153669
申请日：2014-01-13
申请人： Ali Sajassi , Norman W. Finn
发明人： Ali Sajassi , Norman W. Finn
IPC分类号： H04L29/06
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）。
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7.发明授权Single-homing and active-active multi-homing in a virtual private LAN service 有权虚拟专用LAN服务中的单归属和主动主动多归属公开(公告)号：US08724627B2
公开(公告)日：2014-05-13
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。
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8.发明申请Single-homing and Active-Active Multi-homing in a Virtual Private LAN Service 有权虚拟专用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。
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9.发明申请公开(公告)号：US20120201124A1
公开(公告)日：2012-08-09
申请号：US13021530
申请日：2011-02-04
IPC分类号： H04L12/56
摘要： In one embodiment, a network device may participate in an election process to elect one of two or more Provider Edge devices of a Redundancy Group to be a Designated Forwarder for the Redundancy Group, where the Redundancy Group is in a Service Provider network, and where the Redundancy Group serves a Customer Edge device of a customer network. The network device may forward multi-destination traffic to the Customer Edge device according to whether the network device is elected to be the Designated Forwarder for the Redundancy Group. Multi-destination traffic may include multicast traffic, broadcast traffic, or destination unknown unicast traffic.
摘要翻译： 在一个实施例中，网络设备可以参与选举过程，以选择冗余组的两个或更多个提供者边缘设备之一作为冗余组的指定转发器，其中冗余组在服务提供商网络中，以及其中 冗余组为客户网络的客户端设备提供服务。 根据网络设备是否被选为冗余组的指定转发器，网络设备可以将多目标流量转发到客户边缘设备。 多目标流量可以包括多播流量，广播流量或目的地未知单播流量。
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10.发明授权System and method for providing support for multipoint L2VPN services in devices without local bridging 有权在没有本地桥接的设备中为多点L2VPN服务提供支持的系统和方法公开(公告)号：US08228928B2
公开(公告)日：2012-07-24
申请号：US12620390
申请日：2009-11-17
IPC分类号： H04L12/56
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。
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