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：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。

公开(公告)号：US08213435B2

公开(公告)日：2012-07-03

申请号：US11117250

申请日：2005-04-28

申请人： Ali Sajassi

发明人： Ali Sajassi

IPC分类号： H04L12/28 ,  G06F15/16

CPC分类号： H04L12/2898 ,  H04L12/4645 ,  H04L12/465 ,  H04L12/4691

摘要： A VPLS model is implemented in a network-facing provider edge (n-PE) device configured to receive a packet from an access network; the packet having a first Virtual Local Area Network (VLAN) tag of a first predetermined bit length. The n-PE device mapping the service instance identifier of the first VLAN tag into a second VLAN tag of a second predetermined bit length greater than the first predetermined bit length, the second VLAN tag identifying a Virtual Private LAN Service (VPLS) instance. The n-PE device then sends the packet with the second VLAN tag across a service provider (SP) core network via a pseudowire (PW) that functions as a logical link to another PE device. 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： 在面向网络的提供商边缘（n-PE）设备中实现VPLS模型，其被配置为从接入网络接收分组; 该分组具有第一预定比特长度的第一虚拟局域网（VLAN）标签。 n-PE设备将第一VLAN标签的服务实例标识符映射到大于第一预定比特长度的第二预定比特长度的第二VLAN标签，第二VLAN标签标识虚拟专用LAN服务（VPLS）实例。 然后，n-PE设备通过用作到另一个PE设备的逻辑链路的伪线（PW）在服务提供商（SP）核心网络上发送具有第二VLAN标签的分组。 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：US08194656B2

公开(公告)日：2012-06-05

申请号：US11117016

申请日：2005-04-28

申请人： Ali Sajassi ,  Norman W. Finn

发明人： Ali Sajassi ,  Norman W. Finn

IPC分类号： H04L12/28

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.

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。

公开(公告)号：US20100158024A1

公开(公告)日：2010-06-24

申请号：US12342917

申请日：2008-12-23

申请人： Ali Sajassi ,  Francois Edouard Tallet

发明人： Ali Sajassi ,  Francois Edouard Tallet

IPC分类号： H04L12/56

CPC分类号： H04L12/4625 ,  H04L12/4633 ,  H04L12/4641 ,  H04L45/00 ,  H04L45/66

摘要： In one embodiment, when a frame is directed to one or more customer instance ports (CIPs) of a switch having received the frame, the frame (a “local frame”) may be forwarded on the one or more CIPs based on only a customer space (C-space) lookup operation. Also, if the frame is not directed to any CIPs of the switch, the frame (a “transient frame”) may be forwarded on at least one or more provider backbone ports (PBPs) of the switch based on only a backbone space (B-space) lookup operation. For example, a unicast frame may be forwarded based on whether the frame terminates at the switch having received the frame (to a CIP of the switch), while a multicast frame may be forwarded based on determining whether an instance service identifier (I-SID) of the frame maps to a local VLAN ID (L-VID) at the switch (to any CIPs servicing that L-VID).

摘要翻译： 在一个实施例中，当帧被定向到已经接收到帧的交换机的一个或多个客户实例端口（CIP）时，该帧（“本地帧”）可以仅基于客户端在一个或多个CIP上转发 空间（C空间）查找操作。 而且，如果该帧不是指向交换机的任何CIP，那么帧（“瞬态帧”）可以仅在一个主干空间（B）的交换机的至少一个或多个提供商骨干端口（PBP）上转发 -space）查找操作。 例如，可以基于帧在接收到帧的交换机（到交换机的CIP）是否终止，而可以基于确定实例服务标识符（I-SID）来转发多播帧来转发单播帧 ）映射到交换机处的本地VLAN ID（L-VID）（用于为L-VID提供服务的任何CIP）。

公开(公告)号：US20100146324A1

公开(公告)日：2010-06-10

申请号：US12655108

申请日：2009-12-23

申请人： Ali Sajassi ,  Norman W. Finn

发明人： Ali Sajassi ,  Norman W. Finn

IPC分类号： G06F11/07

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。

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。

公开(公告)号：US20090041038A1

公开(公告)日：2009-02-12

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。

公开(公告)号：US20060245439A1

公开(公告)日：2006-11-02

申请号：US11117017

申请日：2005-04-28

申请人： Ali Sajassi

发明人： Ali Sajassi

IPC分类号： H04L12/56

CPC分类号： H04L12/465 ,  H04L12/2881 ,  H04L12/66 ,  H04L45/00

摘要： A DSLAM aggregation topology VLAN bundling mechanism includes an edge device port that receives a packet from a Digital Subscriber Line Access Multiplexer (DSLAM) device, the packet including an inner Virtual Local Area Network (VLAN) tag that identifies a Digital Subscriber Line (DSL) subscriber. A processor of the edge device adds an outer VLAN tag to the packet, the outer VLAN tag identifying the DSLAM and a destination server coupled to an Ethernet access 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. 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： DSLAM聚合拓扑VLAN绑定机制包括从数字用户线路接入复用器（DSLAM）设备接收分组的边缘设备端口，该分组包括标识数字用户线路（DSL）的内部虚拟局域网（VLAN）标签， 订户。 边缘设备的处理器将一个外部VLAN标签添加到数据包，外部VLAN标签标识DSLAM，以及一个目标服务器耦合到以太网接入网络。 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）。