公开(公告)号：WO2012058300A1

公开(公告)日：2012-05-03

申请号：PCT/US2011/057871

申请日：2011-10-26

Applicant: CISCO TECHNOLOGY, INC. ,  SAJASSI, Ali ,  SALAM, Samer M.

Inventor： SAJASSI, Ali ,  SALAM, Samer M.

IPC: H04L12/437 ,  H04L12/56

CPC classification number: H04L12/437 ,  H04L45/22 ,  H04L45/28 ,  H04L45/68

Abstract: Techniques are described which provide mechanisms for dual-homing an access ring for virtual private wire service (VPWS) Ethernet line (E-Line) services. The mechanism may provide resiliency against access ring failures and offer a restoration time of 50 msec upon failure. A method to provide such resiliency may generally include determining, at a first ring port of an access node, a ring failure in an Ethernet ring. Upon determining the first ring port of the access node is not situated on a same side of the Ethernet ring as a node designated as a ring protection link (RPL) owner, a message is transmitted on a second ring port of the access node towards a provider edge (PE) node. The message is used to activate pseudowires (PWs) at the PE node for virtual local area networks (VLANs) of the access node.

Abstract translation: 描述了提供用于虚拟专线服务（VPWS）以太网线路（E-Line）服务的双归属接入环的机制的技术。 该机制可以提供针对接入环故障的弹性，并且在故障时提供恢复时间为50毫秒。 提供这种弹性的方法通常可以包括在接入节点的第一环形端口处确定以太网环中的环路故障。 在确定接入节点的第一环形端口不与作为指定为环形保护链路（RPL）所有者的节点位于以太网环的同一侧上时，消息在接入节点的第二环形端口上朝向 提供商边缘（PE）节点。 该消息用于在接入节点的虚拟局域网（VLAN）的PE节点处激活伪线（PW）。

公开(公告)号：WO2013086376A1

公开(公告)日：2013-06-13

申请号：PCT/US2012/068519

申请日：2012-12-07

Applicant: CISCO TECHNOLOGY, INC. ,  SALAM, Samer ,  SAJASSI, Ali ,  BOUTROS, Sami

Inventor： SALAM, Samer ,  SAJASSI, Ali ,  BOUTROS, Sami

IPC: H04L12/28 ,  H04L12/66 ,  H04L12/70 ,  G06F15/173

CPC classification number: H04L45/68 ,  H04L12/4641 ,  H04L45/66

Abstract: In one embodiment, a network device in a set of network devices obtains a pseudowire label for a Provider Edge (PE) device, where the pseudowire label corresponds to a Virtual Local Area Network (VLAN) on the PE device. In addition, the network device obtains a set of one or more MAC addresses reachable via the PE device, wherein the set of network devices support Ethernet Virtual Private Network (E-VPN) and are in the same redundancy group such that the set of network devices are coupled to the same customer edge device. The network device stores the pseudowire label in association with the set of one or more MAC addresses. The network device uses the pseudowire label to encapsulate traffic associated with the VLAN that is received from the customer edge device and destined to the set of MAC addresses reachable via the PE device.

Abstract translation: 在一个实施例中，一组网络设备中的网络设备获得用于提供商边缘（PE）设备的伪线标签，其中伪线标签对应于PE设备上的虚拟局域网（VLAN）。 另外，网络设备获得通过PE设备可达到的一个或多个MAC地址的集合，其中该组网络设备支持以太网虚拟专用网（E-VPN），并且处于相同的冗余组中，使得该组网络 设备耦合到相同的客户边缘设备。 网络设备将伪线标签与一组或多个MAC地址相关联地存储。 网络设备使用伪线标签封装与客户边缘设备接收到的VLAN相关联的流量，并发往可通过PE设备到达的一组MAC地址。

公开(公告)号：WO2009018113A1

公开(公告)日：2009-02-05

申请号：PCT/US2008/071094

申请日：2008-07-25

Applicant: CISCO TECHNOLOGY, INC. ,  SAJASSI, Ali ,  SALAM, Samer

Inventor： SAJASSI, Ali ,  SALAM, Samer

IPC: H04L12/24 ,  H04L12/18 ,  H04L12/46

CPC classification number: H04L12/1863 ,  H04L12/413 ,  H04L41/0668 ,  H04L41/0677

Abstract: A method and system for redundancy in Ethernet Virtual Connections (EVCs) are disclosed. In one embodiment, a method includes transmitting continuity check messages from a node in an Ethernet Virtual Connection connecting at least one root node and a plurality of leaf nodes in a point-to-multipoint or multipoint-to-multipoint connection, identifying a failure in a primary path between the root node and the leaf nodes, switching to a backup path, and advertising the switching to the backup path to at least one node.

Abstract translation: 公开了以太网虚拟连接（EVC）中冗余的方法和系统。 在一个实施例中，一种方法包括：从连接至少一个根节点和多个叶节点的点对多点或多点到多点连接中的以太网虚拟连接中的节点发送连续性检查消息，识别故障 根节点和叶节点之间的主要路径，切换到备份路径，并且向至少一个节点发布到备份路径的切换。

公开(公告)号：WO2008144606A1

公开(公告)日：2008-11-27

申请号：PCT/US2008/064041

申请日：2008-05-19

Applicant: CISCO TECHNOLOGY, INC. ,  SALAM, Samer, M. ,  NADEAU, Thomas, D. ,  MARTINI, Luca ,  SAJASSI, Ali

Inventor： SALAM, Samer, M. ,  NADEAU, Thomas, D. ,  MARTINI, Luca ,  SAJASSI, Ali

IPC: H04L12/24 ,  H04L12/40 ,  H04L12/56 ,  H04L29/08

CPC classification number: H04L41/06 ,  H04L41/0226 ,  H04L45/50 ,  H04L67/28 ,  H04L67/2861 ,  H04L69/40

Abstract: In one embodiment, a method includes receiving, by a provider edge (PE) device, a transport layer status message indicative of a defect on a pseudowire (PW) running across a core of a service provider (SP) network. The status message is translated to a service layer message indicative of the defect. The service layer message is then transmitted across an access domain of the SP network.

Abstract translation: 在一个实施例中，一种方法包括由提供商边缘（PE）设备接收指示在服务提供商（SP）网络的核心上运行的伪线（PW）上的缺陷的传输层状态消息。 状态消息被转换为指示缺陷的服务层消息。 服务层消息然后通过SP网络的接入域传输。

公开(公告)号：WO2006118714A3

公开(公告)日：2007-10-25

申请号：PCT/US2006011287

申请日：2006-03-27

Applicant: CISCO TECH INC ,  SAJASSI ALI

Inventor： SAJASSI ALI

IPC: G06F15/16

CPC classification number: H04L12/2898 ,  H04L12/4645 ,  H04L12/465 ,  H04L12/4691

Abstract: 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

Abstract translation: 在面向网络的提供商边缘（n-PE）设备中实现VPLS模型，该设备被配置为从接入网络接收具有第一预定比特长度的第一虚拟局域网（VLAN）标签的分组.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标签中，第二VLAN标签标识虚拟专用LAN服务（VPLS）实例然后n-PE设备 通过伪线（PW）将服务提供商（SP）核心网络上的第二个VLAN标签的数据包发送到另一个PE设备的逻辑链路

公开(公告)号：WO2006118696A3

公开(公告)日：2007-11-01

申请号：PCT/US2006010862

申请日：2006-03-24

Applicant: CISCO TECH INC ,  SAJASSI ALI

Inventor： SAJASSI ALI

IPC: G06F15/16

CPC classification number: H04L69/22 ,  H04L12/18 ,  H04L12/2852 ,  H04L12/4645 ,  H04L12/465 ,  H04L12/4662 ,  H04L12/4691 ,  H04L45/16 ,  H04L49/351

Abstract: 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.

Abstract translation: 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。

公开(公告)号：WO2006118714A2

公开(公告)日：2006-11-09

申请号：PCT/US2006/011287

申请日：2006-03-27

Applicant: CISCO TECHNOLOGY, INC. ,  SAJASSI, Ali

Inventor： SAJASSI, Ali

IPC: H04L12/28

CPC classification number: H04L12/2898 ,  H04L12/4645 ,  H04L12/465 ,  H04L12/4691

Abstract: 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.

Abstract translation: VPLS模型在被配置为从接入网络接收分组的面向网络的提供商边缘（n-PE）设备中实现; 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：WO2006118696A2

公开(公告)日：2006-11-09

申请号：PCT/US2006/010862

申请日：2006-03-24

Applicant: CISCO TECHNOLOGY, INC. ,  SAJASSI, Ali

Inventor： SAJASSI, Ali

IPC: H04L12/56

CPC classification number: H04L69/22 ,  H04L12/18 ,  H04L12/2852 ,  H04L12/4645 ,  H04L12/465 ,  H04L12/4662 ,  H04L12/4691 ,  H04L45/16 ,  H04L49/351

Abstract: 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.

Abstract translation: 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：WO2006118676A3

公开(公告)日：2011-06-03

申请号：PCT/US2006009878

申请日：2006-03-17

Applicant: CISCO TECH INC ,  SAJASSI ALI

Inventor： SAJASSI ALI

IPC: H04L12/56

CPC classification number: H04L12/465 ,  H04L12/2881 ,  H04L12/66 ,  H04L45/00

Abstract: 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).

Abstract translation: 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）。

公开(公告)号：WO2006118712A3

公开(公告)日：2006-11-09

申请号：PCT/US2006/011224

申请日：2006-03-27

Applicant: CISCO TECHNOLOGY, INC. ,  SAJASSI, Ali

Inventor： SAJASSI, Ali

IPC: H04L12/28

Abstract: Identifying and forwarding traffic to/from Digital Subscriber Line Access Multiplex (DSLAM) devices and feature servers without ambiguity includes a user-facing provider edge (u-PE) device that receives a customer frame from a DSLAM device, the customer frame of a first format including a first virtual local area network (VLAN) tag of a first bit length. The first VLAN tag identifies a DSL subscriber. The customer frame is re-formatted by the u-PE device such that the first VLAN tag is mapped to a second VLAN tag of a second bit length greater than the first bit length, the second VLAN tag identifying a service instance of the Ethernet access network. The u-PE device encapsulating the customer frame inside a provider frame, with a provider source Media Access Control (MAC) address represents a MAC address associated with the DSLAM, and a provider destination MAC address represents a MAC address of a destination device.