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：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。

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：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。

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：US20100315946A1

公开(公告)日：2010-12-16

申请号：US12456100

申请日：2009-06-10

申请人： Samer Salam ,  Ali Sajassi

发明人： Samer Salam ,  Ali Sajassi

IPC分类号： H04L1/00 ,  H04L12/26 ,  H04L12/28

CPC分类号： H04L45/28 ,  H04L12/437 ,  H04L12/4641 ,  H04L45/50 ,  H04L45/68

摘要： In one embodiment, a method includes configuring a first node, located at an edge of a core network and connected to an access ring, with a maintenance end point for a virtual local area network on a port connecting the first node to the access ring. The first node operates in an active mode for the virtual local area network and is in communication with a second node located at the edge of the core network and connected to the access ring. The method further includes receiving and processing at a processor at the first node, continuity check messages from access nodes on the access ring, synchronizing the first node with the second node, and communicating from the first node to the second node to initiate switching of the second node from a backup mode to the active mode for the virtual local area network upon identification of a failure.

摘要翻译： 在一个实施例中，一种方法包括在连接第一节点到接入环的端口上配置位于核心网的边缘并连接到接入环的第一节点，其具有用于虚拟局域网的维护端点。 第一节点以虚拟局域网的活动模式运行，并且与位于核心网络边缘并连接到接入环的第二节点进行通信。 该方法还包括在第一节点处的处理器处接收和处理来自接入环上的接入节点的连续性检查消息，使第一节点与第二节点同步，以及从第一节点到第二节点的通信，以启动 第二节点从备份模式到虚拟局域网的活动模式。

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：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）。