公开(公告)号：US20060245435A1

公开(公告)日：2006-11-02

申请号：US11117249

申请日：2005-04-28

申请人： Ali Sajassi

发明人： Ali Sajassi

IPC分类号： H04L12/28

CPC分类号： H04M11/062 ,  H04L12/2881 ,  H04L12/4662 ,  H04L29/12839 ,  H04L61/6022

摘要： A system and method for identifying and forwarding traffic to/from Digital Subscriber Line Access Multiplexer (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 being of a first format that includes a first Virtual Local Area Network (VLAN) tag of a first bit length. The first VLAN tag identifies a Digital Subscriber Line (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. 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： 用于识别和转发来自数字用户线路接入复用器（DSLAM）设备和特征服务器的流量的系统和方法，不含歧义，包括从DSLAM设备接收客户帧的面向用户的提供商边缘（u-PE）设备， 客户帧是包括第一位长度的第一虚拟局域网（VLAN）标签的第一格式。 第一个VLAN标签标识数字用户线路（DSL）用户。 客户帧由u-PE设备重新格式化，使得第一VLAN标签被映射到大于第一位长度的第二位长度的第二VLAN标签，第二VLAN标签标识以太网接入的服务实例 网络。 用提供商源媒体访问控制（MAC）地址表示与DSLAM相关联的MAC地址，并且提供者目的地MAC地址表示目的地设备的MAC地址，将客户帧封装在提供商帧内的u-PE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：US5953676A

公开(公告)日：1999-09-14

申请号：US918470

申请日：1997-08-26

申请人： Kirk Berry ,  Louis King ,  Ali Sajassi

发明人： Kirk Berry ,  Louis King ,  Ali Sajassi

IPC分类号： H04W84/14 ,  H04Q7/20

CPC分类号： H04W84/14

摘要： An improved fixed wired system and method of originating a call in a fixed wired system in which a remote station (10), which is wired to a communication terminal (15), such as a standard telephone, detects an off-hook state of the communication terminal (15), transmits a call origination request signal to a base station (20,25) via a radio link in response to the off-hook state detection, and delivers a dial tone to the communication terminal (15) upon receiving an acknowledgment from the base station (20,25). After a dial tone is delivered to the communication terminal (15) and the user begins dialing a directory number, the remote station (10) collects the dialed digits and forwards the dialed digits separately or in groups, to the base station (20,25) where the digits are analyzed to determine whether a complete directory number has been dialed. When the base station (20,25) detects that a complete directory number has been dialed, it forwards the dialed digits to a communication network (40), such as a public switched telephone network or an integrated services digital network for further processing.

摘要翻译： 一种在固定有线系统中发起呼叫的改进的固定有线系统和方法，其中连接到诸如标准电话的通信终端（15）的远程站（10）检测到所述呼叫的摘机状态 通信终端（15）响应于摘机状态检测经由无线电链路向基站（20,25）发送呼叫发起请求信号，并且在接收到通知终端（15）时向通信终端（15）发送拨号音 来自基站的确认（20,25）。 拨号音被传送到通信终端（15）并且用户开始拨打电话号码后，远程站（10）收集拨号数字，并将拨号数字分组或分组转发给基站（20,25 ）其中数字被分析以确定是否已经拨打完整的目录号码。 当基站（20,25）检测到已经拨出完整的目录号码时，它将拨出的数字转发到诸如公共交换电话网络或综合业务数字网络的通信网络（40）以进一步处理。

公开(公告)号：US09553737B2

公开(公告)日：2017-01-24

申请号：US13294164

申请日：2011-11-10

申请人： Ali Sajassi ,  Samer M Salam

发明人： Ali Sajassi ,  Samer M Salam

IPC分类号： H04L12/28 ,  H04L12/46 ,  H04L12/851

CPC分类号： H04L12/4633 ,  H04L12/462 ,  H04L12/4662 ,  H04L47/24 ,  H04L47/2483

摘要： In one embodiment, backbone service instance identifiers (I-SIDs) of backbone frames are modified based on flow identification of frames encapsulated therein to induce entropy into the headers of the backbone frames. Backbone packet switching devices use the modified service instance identifier to load balance the corresponding frame through the backbone network. At an exit point of the backbone network, the original backbone service instance identifier (I-SID) associated with a frame encapsulated in a backbone frame is recovered from the modified service instance identifier, with this recovery typically including determining the flow identification of the frame encapsulated in the backbone frame.

摘要翻译： 在一个实施例中，骨干帧的骨干服务实例标识符（I-SID）基于其中封装的帧的流标识被修改，以将熵引入到主干帧的报头中。 骨干分组交换设备使用经过修改的业务实例标识符通过骨干网对相应帧进行负载均衡。 在骨干网的出口处，从被修改的服务实例标识符中恢复与被封装在骨干帧中的帧相关联的原始骨干服务实例标识符（I-SID），该恢复通常包括确定帧的流标识 封装在骨干框架中。

公开(公告)号：US09548959B2

公开(公告)日：2017-01-17

申请号：US13428436

申请日：2012-03-23

申请人： Sami Boutros ,  Samer Salam ,  Ali Sajassi ,  Clarence Filsfils

发明人： Sami Boutros ,  Samer Salam ,  Ali Sajassi ,  Clarence Filsfils

IPC分类号： G06F15/173 ,  H04L29/12

CPC分类号： H04L61/103 ,  H04L61/6009

摘要： An example method is provided that includes determining whether an address resolution protocol reply from a local machine has been received at an edge node; updating a local cache based on the reply from the local machine; and sending the reply to a plurality of edge nodes through a data plane of a data center interconnect. In more specific implementations, the method can include determining whether an address resolution protocol request has been received from the local machine. The method could also include updating a local machine cache based on the request. In certain implementations, the method can include determining whether the request is targeting the local machine; and dropping the request if the request is targeting the local machine. The method could also include sending the request through the data center interconnect if the request is not targeting the local machine.

摘要翻译： 提供了一种示例性方法，其包括确定在边缘节点处是否已经接收到来自本地机器的地址解析协议应答; 根据本地机器的回复更新本地缓存; 并通过数据中心互连的数据平面将答复发送到多个边缘节点。 在更具体的实现中，该方法可以包括确定是否已经从本地机器接收到地址解析协议请求。 该方法还可以包括基于该请求更新本地机器缓存。 在某些实现中，该方法可以包括确定请求是否针对本地机器; 如果请求针对本地机器，则删除该请求。 该方法还可以包括如果请求不针对本地机器，则通过数据中心互连发送请求。

公开(公告)号：US20160021015A1

公开(公告)日：2016-01-21

申请号：US14335622

申请日：2014-07-18

申请人： Samir D. Thoria ,  Keyur Patel ,  Ali Sajassi

发明人： Samir D. Thoria ,  Keyur Patel ,  Ali Sajassi

IPC分类号： H04L12/851 ,  H04L12/46

CPC分类号： H04L47/2483 ,  H04L12/4633 ,  H04L45/32 ,  H04L45/50

摘要： In one embodiment, a method includes obtaining, at a first provider edge (PE) included a plurality of PEs multi-homed to a first customer edge (CE), traffic intended for the first CE, wherein the traffic includes a first indication, the first indication being configured to identify the traffic as flood traffic. A forwarding PE included in the plurality of PEs suitable to use to forward the traffic to the first CE is identified based on identifying traffic as the flood traffic. The method also includes determining whether the first PE is the forwarding PE, and providing the traffic to the first CE using the first PE when it is determined that the first PE is the forwarding PE. When it is determined that the first PE is not the forwarding PE, the traffic is filtered using the first PE.

摘要翻译： 在一个实施例中，一种方法包括在包括多归属于第一客户边缘（CE）的多个PE的第一提供者边缘（PE）处获得旨在用于第一CE的流量，其中流量包括第一指示， 第一指示被配置为将流量识别为洪泛流量。 基于将流量识别为洪泛流量，识别适合于将流量转发到第一CE的多个PE中包括的转发PE。 该方法还包括确定第一PE是否是转发PE，并且当确定第一PE是转发PE时，使用第一PE将流量提供给第一CE。 当确定第一PE不是转发PE时，使用第一PE过滤流量。

公开(公告)号：US09088517B2

公开(公告)日：2015-07-21

申请号：US13369142

申请日：2012-02-08

申请人： Ali Sajassi ,  Samer Salam ,  Sami Boutros

发明人： Ali Sajassi ,  Samer Salam ,  Sami Boutros

IPC分类号： H04L12/753 ,  H04L12/723

CPC分类号： H04L12/4679 ,  H04L12/1863 ,  H04L45/02 ,  H04L45/48 ,  H04L45/50 ,  H04L61/2069

摘要： Techniques for stitching multicast trees in a multiple data center environment. According to one embodiment, a technique for stitching multicast trees is provided, which includes determining, at an edge device of a data center, one or more Virtual Local Area Networks (VLANs) assigned to the edge device as a result of a designated forwarder election. An assigned forwarder message is sent by the edge device to one or more devices on the data center, the assigned forwarder message advertising the edge device as a designated forwarder for the VLANs assigned to the edge device. For each of the VLANs assigned to the edge device, the assigned forwarder message causes the edge device to be included in a multicast tree for the VLAN when the assigned forwarder message is received by specific ones of the devices in the data center that are associated with the VLAN.

摘要翻译： 在多数据中心环境中拼接多播树的技术。 根据一个实施例，提供了一种用于拼接多播树的技术，其包括在数据中心的边缘设备处确定由于指定的转发器选举而分配给边缘设备的一个或多个虚拟局域网（VLAN） 。 分配的转发器消息由边缘设备发送到数据中心上的一个或多个设备，所分配的转发器消息将边缘设备通告为分配给边缘设备的VLAN的指定转发器。 对于分配给边缘设备的每个VLAN，分配的转发器消息使得边缘设备被包含在VLAN的多播树中，当分配的转发器消息被数据中心中与数据中心相关联的特定设备接收时 VLAN。

公开(公告)号：US08948169B2

公开(公告)日：2015-02-03

申请号：US13313968

申请日：2011-12-07

申请人： Samer Salam ,  Ali Sajassi ,  Sami Boutros

发明人： Samer Salam ,  Ali Sajassi ,  Sami Boutros

IPC分类号： H04L12/56 ,  H04L12/721 ,  H04L12/46

CPC分类号： H04L45/68 ,  H04L12/4641 ,  H04L45/66

摘要： 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.

摘要翻译： 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：US08743886B2

公开(公告)日：2014-06-03

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：US08644134B2

公开(公告)日：2014-02-04

申请号：US12914722

申请日：2010-10-28

申请人： Ali Sajassi ,  Samer M. Salam

发明人： Ali Sajassi ,  Samer M. Salam

IPC分类号： G01R31/08

CPC分类号： H04L12/437 ,  H04L45/22 ,  H04L45/28 ,  H04L45/68

摘要： 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.

摘要翻译： 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：US20140010232A1

公开(公告)日：2014-01-09

申请号：US14019728

申请日：2013-09-06

申请人： Ali Sajassi ,  Keyur Patel ,  Chandrashekhar Appanna ,  Stefano Previdi

发明人： Ali Sajassi ,  Keyur Patel ,  Chandrashekhar Appanna ,  Stefano Previdi

IPC分类号： H04L12/741

CPC分类号： H04L45/745 ,  H04L45/02 ,  H04L45/04 ,  H04L45/50

摘要： In one embodiment, a method includes receiving, by a first autonomous system border router (ASBR) of a first autonomous system (AS), a first plurality of provider-provisioned media access control (B-MAC) addresses via Interior Border Gateway Protocol (I-BGP). Each of first plurality of B-MAC addresses is associated with a provider edge (PE) device of the first AS. The first ASBR sends the first plurality of B-MAC addresses to a second ASBR of a second AS using Exterior Border Gateway Protocol (E-BGP). The first ASBR also receives via E-BGP a second plurality of B-MAC addresses each of which is associated with a PE device of the second AS. The first ASBR then distributes the second plurality of B-MAC addresses to each of the PE devices of the first AS using I-BGP.

摘要翻译： 在一个实施例中，一种方法包括由第一自治系统（AS）的第一自治系统边界路由器（ASBR）通过内部边界网关协议（第一自治系统边界路由器（ASBR））接收第一多个提供商提供的媒体访问控制（B-MAC） I-BGP）。 第一多个B-MAC地址中的每一个与第一AS的提供商边缘（PE）设备相关联。 第一ASBR使用外部边界网关协议（E-BGP）向第二AS的第二ASBR发送第一多个B-MAC地址。 第一ASBR还经由E-BGP接收第二多个B-MAC地址，每个B-MAC地址与第二AS的PE设备相关联。 第一ASBR然后使用I-BGP将第二多个B-MAC地址分配给第一AS的每个PE设备。