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1. 发明申请

US20090268731A1 Point-to -multipoint for multicast and unicast forwarding 有权
标题翻译：点到多点传输和单播转发
公开(公告)号：US20090268731A1
公开(公告)日：2009-10-29
申请号：US12148816
申请日：2008-04-23
申请人： Ashok Narayanan , Robert Goguen , Ali Sajassi , Samir Vapiwala
发明人： Ashok Narayanan , Robert Goguen , Ali Sajassi , Samir Vapiwala
IPC分类号： H04L12/56
CPC分类号： H04L12/18 , H04L45/00 , H04L45/16 , H04L45/50
摘要： A method and apparatus for establishing multicast and unicast forwarding are disclosed. In one embodiment, a method includes transmitting path messages to a plurality of receivers, receiving a plurality of messages in response to the path messages and establishing unicast and multicast forwarding based on received unicast and multicast labels. Each of the receivers is associated with a sub-LSP (Label Switched Path) in a Point-to-Multipoint (P2MP) LSP and the response messages include a multicast label and at least one unicast label corresponding to a unicast path to one of the receivers.
摘要翻译：公开了一种建立组播和单播转发的方法和装置。在一个实施例中，一种方法包括向多个接收机发送路径消息，响应于路径消息接收多条消息，并基于接收的单播和多播标签建立单播和多播转发。每个接收机与点对多点（P2MP）LSP中的子LSP（标签交换路径）相关联，并且响应消息包括多播标签和对应于单播路径中的一个的至少一个单播标签接收器。

2. 发明授权

US07792111B2 Point-to-multipoint for multicast and unicast forwarding 有权
标题翻译：点对多点进行组播和单播转发
公开(公告)号：US07792111B2
公开(公告)日：2010-09-07
申请号：US12148816
申请日：2008-04-23
申请人： Ashok Narayanan , Robert Goguen , Ali Sajassi , Samir Vapiwala
发明人： Ashok Narayanan , Robert Goguen , Ali Sajassi , Samir Vapiwala
IPC分类号： H04L12/28 , H04L12/56
CPC分类号： H04L12/18 , H04L45/00 , H04L45/16 , H04L45/50
摘要： A method and apparatus for establishing multicast and unicast forwarding are disclosed. In one embodiment, a method includes transmitting path messages to a plurality of receivers, receiving a plurality of messages in response to the path messages and establishing unicast and multicast forwarding based on received unicast and multicast labels. Each of the receivers is associated with a sub-LSP (Label Switched Path) in a Point-to-Multipoint (P2MP) LSP and the response messages include a multicast label and at least one unicast label corresponding to a unicast path to one of the receivers.
摘要翻译：公开了一种建立组播和单播转发的方法和装置。在一个实施例中，一种方法包括向多个接收机发送路径消息，响应于路径消息接收多条消息，并基于接收的单播和多播标签建立单播和多播转发。每个接收机与点对多点（P2MP）LSP中的子LSP（标签交换路径）相关联，并且响应消息包括多播标签和对应于单播路径中的一个的至少一个单播标签接收器。

3. 发明授权

US07697534B1 Virtual private LAN service networks with mixed mode network devices 有权
标题翻译：具有混合模式网络设备的虚拟专用LAN服务网络
公开(公告)号：US07697534B1
公开(公告)日：2010-04-13
申请号：US12148340
申请日：2008-04-18
申请人： Ashok Narayanan , Richard Bradford , George Swallow , Ali Sajassi , Samer Salam
发明人： Ashok Narayanan , Richard Bradford , George Swallow , Ali Sajassi , Samer Salam
IPC分类号： H04L12/56
CPC分类号： H04L12/4633 , H04L12/4625 , H04L12/4658 , H04L12/4662 , H04L45/68
摘要： In one embodiment, a method generally includes identifying at a local Virtual Private LAN Service Provider Edge (VPLS PE) device whether remote VPLS PE devices are configured for operation as a Provider Backbone Bridge (PBB), negotiating pseudowire connections with the remote VPLS PE devices based on identification of the remote VPLS PE device configuration, receiving a frame destined for one of the remote VPLS PE devices, and transmitting the frame in a format compatible with the remote VPLS PE device. The local VPLS PE is configured for operation as a PBB and at least one of the remote VPLS PE devices is not configured for operation as a PBB. An apparatus for use in mixed mode VPLS network is also disclosed.
摘要翻译：在一个实施例中，一种方法通常包括在本地虚拟专用LAN服务提供商边缘（VPLS PE）设备处识别远端VPLS PE设备是否配置为作为提供商骨干桥（PBB）进行操作，与远程VPLS PE设备协商伪线连接基于远程VPLS PE设备配置的识别，接收目的地为远程VPLS PE设备之一的帧，并以与远程VPLS PE设备兼容的格式发送帧。本地VPLS PE配置为PBB操作，至少有一个远程VPLS PE设备未配置为作为PBB操作。还公开了一种用于混合模式VPLS网络的装置。

4. 发明授权

US08988984B2 Designated forwarder election for VPLS with BGP-based MAC learning 有权
标题翻译：基于BGP的MAC学习的VPLS指定的转发器选举
公开(公告)号：US08988984B2
公开(公告)日：2015-03-24
申请号：US13021530
申请日：2011-02-04
申请人： Pedro Miguel Martins Roque Marques , Ali Sajassi , Samer Salam , Keyur Patel
发明人： Pedro Miguel Martins Roque Marques , Ali Sajassi , Samer Salam , Keyur Patel
IPC分类号： H04L12/26 , H04L12/715 , H04L12/703
CPC分类号： H04L45/04 , H04L45/28
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。

5. 发明申请

US20140198795A1 Metro Ethernet Network With Scaled Broadcast and Service Instance Domains 有权
标题翻译：城域以太网网络与扩展广播和服务实例域
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）。

6. 发明授权

US08724627B2 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。

7. 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。

8. 发明申请

US20120201124A1 DESIGNATED FORWARDER ELECTION FOR VPLS WITH BGP-BASED MAC LEARNING 有权
标题翻译：用于基于BGP的MAC学习的VPLS的指定前向选择
公开(公告)号：US20120201124A1
公开(公告)日：2012-08-09
申请号：US13021530
申请日：2011-02-04
申请人： Pedro Miguel Martins Roque Marques , Ali Sajassi , Samer Salam , Keyur Patel
发明人： Pedro Miguel Martins Roque Marques , Ali Sajassi , Samer Salam , Keyur Patel
IPC分类号： H04L12/56
CPC分类号： H04L45/04 , H04L45/28
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。

9. 发明授权

US08228928B2 System and method for providing support for multipoint L2VPN services in devices without local bridging 有权
标题翻译：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
申请人： Harshavardhan Parandekar , Ali Sajassi , Sanjay Dhar
发明人： Harshavardhan Parandekar , Ali Sajassi , Sanjay Dhar
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。

10. 发明申请

US20120177054A1 Managing Active Edge Devices in VPLS Using BGP Signaling 有权
标题翻译：使用BGP信令管理VPLS中的主动边缘设备
公开(公告)号：US20120177054A1
公开(公告)日：2012-07-12
申请号：US12987815
申请日：2011-01-10
申请人： Manas Pati , Samer Salam , Keyur Patel , Ali Sajassi
发明人： Manas Pati , Samer Salam , Keyur Patel , Ali Sajassi
IPC分类号： H04L12/28 , H04L12/56
CPC分类号： H04L45/68 , H04L12/4625 , H04L12/4633 , H04L12/4641 , H04L45/04 , H04L45/24 , H04L45/54
摘要： In one embodiment, a method includes establishing in a Virtual Private Local Area Network (LAN) Service (VPLS) over Multi-Protocol Label Switching (MPLS) network a floating pseudowire between a first provider edge router and a redundancy group having a plurality of provider edge routers each configured to forward data toward a external device. Each provider edge router in the redundancy group is configured to maintain an active link to the external device. A provider edge router that is not a member of the redundancy group sends data directed to the external device through the floating pseudowire. Only one provider edge router in the redundancy group receives and forwards the particular data to the external device.
摘要翻译：在一个实施例中，一种方法包括在通过多协议标签交换（MPLS）网络的虚拟专用局域网（LAN）服务（VPLS）中建立第一供应商边缘路由器与具有多个提供商的冗余组之间的浮动伪线每个边缘路由器配置为向外部设备转发数据。冗余组中的每个提供商边缘路由器被配置为维持到外部设备的活动链路。不是冗余组成员的提供商边缘路由器通过浮动伪线发送定向到外部设备的数据。冗余组中只有一个提供商边缘路由器接收并将特定数据转发到外部设备。

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