公开(公告)号：US20060047851A1

公开(公告)日：2006-03-02

申请号：US10925743

申请日：2004-08-25

申请人： Eric Voit ,  Steve Phillips ,  Ali Sajassi ,  Yves Hertoghs

发明人： Eric Voit ,  Steve Phillips ,  Ali Sajassi ,  Yves Hertoghs

IPC分类号： G06F15/173

CPC分类号： H04L45/48

摘要： A computer network includes a core network connected with first and second Ethernet access domain networks, each of Ethernet access domain networks including a user-facing provider edge (u-PE) device, a primary network-facing provider edge (n-PE) device, a redundant n-PE device, and a plurality of aggregation provider edge (Agg-PE) devices providing connectivity between to the u-PE device and the primary and redundant n-PE devices, the Agg-PE devices running a spanning-tree protocol (STP) algorithm. A primary data path is provided along with first and second redundant data paths that include first and second redundant pseudowires (PWs), respectively, connected across the core network, the first and second redundant data paths being blocked by the STP algorithm when the primary data path is available, the STP algorithm unblocking either the first or second redundant data path in response to a failure of the primary data path. 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： 计算机网络包括与第一和第二以太网接入域网络连接的核心网络，每个以太网接入域网络包括面向用户的提供商边缘（u-PE）设备，主要面向网络的提供商边缘（n-PE）设备 ，冗余n-PE设备，以及提供与u-PE设备和主冗余n-PE设备之间的连通性的多个聚合提供商边缘（Agg-PE）设备，运行生成树的Agg-PE设备 协议（STP）算法。 主数据路径与第一和第二冗余数据路径一起提供，其包括分别连接在核心网络上的第一和第二冗余伪线（PW），当主数据 路径可用，STP算法响应于主数据路径的故障解除阻塞第一或第二冗余数据路径。 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。

公开(公告)号：US07643409B2

公开(公告)日：2010-01-05

申请号：US10925743

申请日：2004-08-25

申请人： Eric Voit ,  Steve Phillips ,  Ali Sajassi ,  Yves Hertoghs

发明人： Eric Voit ,  Steve Phillips ,  Ali Sajassi ,  Yves Hertoghs

IPC分类号： G01R31/08 ,  G06F15/173

CPC分类号： H04L45/48

摘要： A computer network includes a core network connected with first and second Ethernet access domain networks, each of Ethernet access domain networks including a user-facing provider edge (u-PE) device, a primary network-facing provider edge (n-PE) device, a redundant n-PE device, and a plurality of aggregation provider edge (Agg-PE) devices providing connectivity between to the u-PE device and the primary and redundant n-PE devices, the Agg-PE devices running a spanning-tree protocol (STP) algorithm. A primary data path is provided along with first and second redundant data paths that include first and second redundant pseudowires (PWs), respectively, connected across the core network, the first and second redundant data paths being blocked by the STP algorithm when the primary data path is available, the STP algorithm unblocking either the first or second redundant data path in response to a failure of the primary data path. 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： 计算机网络包括与第一和第二以太网接入域网络连接的核心网络，每个以太网接入域网络包括面向用户的提供商边缘（u-PE）设备，主要面向网络的提供商边缘（n-PE）设备 ，冗余n-PE设备，以及提供与u-PE设备和主冗余n-PE设备之间的连通性的多个聚合提供商边缘（Agg-PE）设备，运行生成树的Agg-PE设备 协议（STP）算法。 主数据路径与第一和第二冗余数据路径一起提供，第一和第二冗余数据路径分别包括连接在核心网络上的第一和第二冗余伪线（PW），第一和第二冗余数据路径被主要数据 路径可用，STP算法响应于主数据路径的故障解除阻塞第一或第二冗余数据路径。 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）。

公开(公告)号：US07515542B2

公开(公告)日：2009-04-07

申请号：US11180003

申请日：2005-07-12

申请人： Yves Hertoghs ,  Ali Sajassi ,  Norman W. Finn ,  Wojciech Dec

发明人： Yves Hertoghs ,  Ali Sajassi ,  Norman W. Finn ,  Wojciech Dec

IPC分类号： H04J1/16

CPC分类号： H04L12/4633

摘要： A broadband access node includes a port for connection with a Digital Subscriber Line and a processor to run code that implements a virtual maintenance end point (vMEP). The vMEP translates an IEEE 802.1ag Loopback Message (LBM) received from a device on an Ethernet access network into a legacy operations and maintenance (OAM) message that is transmitted to a residential gateway (RG) device. The legacy OAM message determines a link-level connectivity status between broadband access node and the RG device. The vMEP also transmits a reply message back to the device on an Ethernet access network in compliance with the IEEE 802.1ag 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. 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： 宽带接入节点包括用于与数字用户线路连接的端口和用于运行实现虚拟维护终点（vMEP）的代码的处理器。 vMEP将从以太网接入网络上的设备接收的IEEE 802.1ag环回消息（LBM）转换为传输到住宅网关（RG）设备的传统操作和维护（OAM）消息。 传统的OAM消息确定宽带接入节点和RG设备之间的链路级连接状态。 vMEP还根据IEEE 802.1ag规范在以太网接入网络上将回复消息发送回设备。 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）。

公开(公告)号：US20070025256A1

公开(公告)日：2007-02-01

申请号：US11180003

申请日：2005-07-12

申请人： Yves Hertoghs ,  Ali Sajassi ,  Norman Finn ,  Wojciech Dec

发明人： Yves Hertoghs ,  Ali Sajassi ,  Norman Finn ,  Wojciech Dec

IPC分类号： H04L12/26

CPC分类号： H04L12/4633

摘要： A broadband access node includes a port for connection with a Digital Subscriber Line and a processor to run code that implements a virtual maintenance end point (vMEP). The vMEP translates an IEEE 802.1ag Loopback Message (LBM) received from a device on an Ethernet access network into a legacy operations and maintenance (OAM) message that is transmitted to a residential gateway (RG) device. The legacy OAM message determines a link-level connectivity status between broadband access node and the RG device. The vMEP also transmits a reply message back to the device on an Ethernet access network in compliance with the IEEE 802.1ag 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. 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： 宽带接入节点包括用于与数字用户线路连接的端口和用于运行实现虚拟维护终点（vMEP）的代码的处理器。 vMEP将从以太网接入网络上的设备接收的IEEE 802.1ag环回消息（LBM）转换为传输到住宅网关（RG）设备的传统操作和维护（OAM）消息。 传统的OAM消息确定宽带接入节点和RG设备之间的链路级连接状态。 vMEP还根据IEEE 802.1ag规范在以太网接入网络上发送回应消息给设备。 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）。

公开(公告)号：US07715310B1

公开(公告)日：2010-05-11

申请号：US10857716

申请日：2004-05-28

申请人： Ali Sajassi ,  Eric Voit

发明人： Ali Sajassi ,  Eric Voit

IPC分类号： H04L1/00 ,  H04L12/26 ,  G06F15/173

CPC分类号： H04L1/22 ,  H04L41/0659

摘要： Redundancy for Virtual Private Network (VPN) service with an Ethernet access network is provided by a full-mesh of dedicated pseudowires connected among the network-facing provider edge (n-PE) devices, each of which is associated with the same Ethernet access network. A provider Bridge Protocol Data Unit (BPDU) generated by a provider bridge node in the Ethernet access network and received at an input interface of one n-PE device is relayed (without being processed) to all other n-PEs associated with that access network over the full-mesh of dedicated pseudowires. 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： 使用以太网接入网络进行虚拟专用网（VPN）业务的冗余由面向网络的提供商边缘（n-PE）设备之间连接的全网状专用伪线提供，每个专用网络与相同的以太网接入网络 。 由以太网接入网络中的提供商网桥节点生成并在一个n-PE设备的输入接口处接收的提供商桥接协议数据单元（BPDU）被中继（而不被处理）到与该接入网络相关联的所有其他n-PE 超过专用伪线的全网格。 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。

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。

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）。

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。

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。

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。