公开(公告)号：US20090190504A1

公开(公告)日：2009-07-30

申请号：US12218169

申请日：2008-07-11

申请人： Norman W. Finn ,  Francois E. Tallet ,  Ali Sajassi

发明人： Norman W. Finn ,  Francois E. Tallet ,  Ali Sajassi

IPC分类号： H04L12/28

CPC分类号： H04L12/4662 ,  H04L12/2878 ,  H04L12/4687 ,  H04L45/48 ,  H04L45/66

摘要： In one embodiment, a method associated with a multiple I-service registration protocol (MIRP) includes receiving into an 802.1ah I-component an MVRP TCN from an 802.1ad component. The TCN may be received, for example, from an 802.1ad bridge. The TCN may identify an affected service using an S-VID. Therefore, the example method may include identifying the S-VID specified by the TCN. The method may also include identifying I-SIDs related to the S-VID. The I-SIDs may be identified by consulting an S-VID to I-SID translation table associated with the 802.1ah I-component. The method may also include providing an 802.1ah MIRP PDU to another 802.1ah component. The MIRP PDU may be based on the MVRP TCN and on the I-SID.

摘要翻译： 在一个实施例中，与多个I服务注册协议（MIRP）相关联的方法包括从802.1ad组件向802.1ah I组件接收MVRP TCN。 TCN可以例如从802.1ad桥接收。 TCN可以使用S-VID来识别受影响的服务。 因此，示例性方法可以包括识别由TCN指定的S-VID。 该方法还可以包括识别与S-VID相关的I-SID。 可以通过咨询与802.1ah I组件相关联的S-VID到I-SID转换表来识别I-SID。 该方法还可以包括向另一个802.1ah组件提供802.1ah MIRP PDU。 MIRP PDU可以基于MVRP TCN和I-SID。

公开(公告)号：US20090073989A1

公开(公告)日：2009-03-19

申请号：US11857711

申请日：2007-09-19

申请人： Dezhong Cai ,  Ali Sajassi ,  Roberto Kobo

发明人： Dezhong Cai ,  Ali Sajassi ,  Roberto Kobo

IPC分类号： H04L12/56

CPC分类号： H04L45/00 ,  H04L12/4641 ,  H04L45/48 ,  H04L45/50 ,  H04L45/66

摘要： In one embodiment, a method includes receiving configuration data at a particular node of a first set of multiple nodes. The configuration data includes data that indicates a particular zero or more instances for which the particular node is primary among multiple virtual local area network (VLAN) instances to be forwarded. It is determined whether a VLAN indicated in a data packet received at the particular node is included in the particular instances for which the particular node is primary. If so, then the data packet is forwarded. In another embodiment, multiple nodes are configured to perform as a single virtual node, and the single virtual node is configured to forward data packets for the multiple VLAN.

摘要翻译： 在一个实施例中，一种方法包括在第一组多个节点的特定节点处接收配置数据。 配置数据包括指示要转发的多个虚拟局域网（VLAN）实例中特定节点为主要特定零个或多个实例的数据。 确定在特定节点处接收到的数据分组中指示的VLAN是否包括在特定节点是主节点的特定实例中。 如果是，则转发数据包。 在另一个实施例中，多个节点被配置为执行单个虚拟节点，并且单个虚拟节点被配置为转发用于多个VLAN的数据分组。

公开(公告)号：US20070025276A1

公开(公告)日：2007-02-01

申请号：US11296149

申请日：2005-12-07

申请人： John Zwiebel ,  Ali Sajassi ,  Dino Farinacci ,  Daniel Alvarez

发明人： John Zwiebel ,  Ali Sajassi ,  Dino Farinacci ,  Daniel Alvarez

IPC分类号： H04L12/28

CPC分类号： H04L45/00 ,  H04L12/1836 ,  H04L12/185 ,  H04L45/16 ,  H04L45/48 ,  H04L45/50

摘要： A mechanism that provides congruent forwarding paths for unicast and multicast data traffic over a service provider core network includes issuing, by a receiver edge node, a request to join a multicast tree structure. A unicast path from the receiver edge node to a source node of the provider network is then established using a special message that contains an identifier. The identifier allows the unicast path through the core network to be aligned with the multicast tree structure. 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： 通过服务提供商核心网络为单播和组播数据流量提供一致的转发路径的机制包括由接收者边缘节点发出加入多播树结构的请求。 然后使用包含标识符的特殊消息来建立从接收器边缘节点到提供商网络的源节点的单播路径。 标识符允许通过核心网络的单播路径与多播树结构对齐。 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：US20060245436A1

公开(公告)日：2006-11-02

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

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：US09794180B2

公开(公告)日：2017-10-17

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 ,  H04L12/721 ,  H04L12/723

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.

公开(公告)号：US20140064082A1

公开(公告)日：2014-03-06

申请号：US13601957

申请日：2012-08-31

申请人： Derek Man-Kit Yeung ,  Ali Sajassi ,  Hong Zhang

发明人： Derek Man-Kit Yeung ,  Ali Sajassi ,  Hong Zhang

IPC分类号： H04L12/803

CPC分类号： H04L47/125

摘要： In one embodiment, a method is provided for congestion mitigation. In this method, a congestion level of data flows along a path is monitored relative to a threshold. Here, each data flow is associated with a flow identifier. Based on detection that the congestion level exceeds the threshold, the flow identifier of a number (e.g., one or more) of the data flows is changed to a different flow identifier. This change results in the number of the data flows redirected to a different path. In an alternate embodiment, another method is provided for congestion avoidance. In this method, a data flow transmitted along a single path is received, and the data flow is split into multiple micro data flows. A different flow identifier is then assigned to each micro data flow. This change results in the multiple micro data flows distributed along multiple different paths.

摘要翻译： 在一个实施例中，提供了一种用于拥塞缓解的方法。 在该方法中，相对于阈值监视沿着路径的数据流的拥塞级别。 这里，每个数据流与流标识符相关联。 基于拥塞级别超过阈值的检测，数据流（例如，一个或多个）的流标识被改变为不同的流标识符。 此更改导致重定向到不同路径的数据流的数量。 在替代实施例中，提供了另一种用于拥塞避免的方法。 在该方法中，接收沿着单个路径发送的数据流，并将数据流分割为多个微数据流。 然后将不同的流标识符分配给每个微数据流。 这种变化导致沿着多个不同路径分布的多个微数据流。

公开(公告)号：US08650285B1

公开(公告)日：2014-02-11

申请号：US13069249

申请日：2011-03-22

申请人： Ali Sajassi ,  Samer Salam

发明人： Ali Sajassi ,  Samer Salam

IPC分类号： G06F15/173

CPC分类号： H04L45/586 ,  H04L45/16 ,  H04L45/18 ,  H04L45/50

摘要： A first multicast data packet can be received by a particular edge node, forwarded from another network element in a network, the first packet including data received from a particular device interfacing with the network through a first edge node. The first packet is multicast by the first edge node. The particular edge node is included in a redundancy group including at least one other edge node. The first multicast data packet is examined to identify a first hint corresponding to the particular device. In response to identifying the particular device, it is determined that the particular edge node does not interface with the particular device. It is further determined that the particular edge node is designated as a forwarding node for the redundancy group. Based on these determinations, the first packet is forwarded by the particular edge node while preventing looping and duplicate packet delivery.

摘要翻译： 第一组播数据分组可以由特定边缘节点接收，从网络中的另一网络元件转发，第一分组包括从通过第一边缘节点与网络接口的特定设备接收的数据。 第一个分组由第一个边缘节点组播。 特定边缘节点包括在包括至少一个其他边缘节点的冗余组中。 检查第一组播数据分组以识别与特定设备相对应的第一提示。 响应于识别特定设备，确定特定边缘节点不与特定设备接口。 进一步确定特定边缘节点被指定为冗余组的转发节点。 基于这些确定，第一分组由特定边缘节点转发，同时防止循环和重复分组传送。

公开(公告)号：US20130308646A1

公开(公告)日：2013-11-21

申请号：US13471724

申请日：2012-05-15

申请人： Ali Sajassi ,  Samer Salam ,  Keyur Patel

发明人： Ali Sajassi ,  Samer Salam ,  Keyur Patel

IPC分类号： H04L12/56

CPC分类号： H04L45/66 ,  H04L45/04 ,  H04L45/50 ,  H04L61/6022

摘要： In one embodiment, a method includes obtaining an indication that a device is attached to a provider edge. The device has a media access control (MAC) address, wherein the device was previously attached to a first provider edge (PE) of a Multiprotocol Label Switching (MPLS) network. The method also includes issuing a first advertisement that identifies the MAC address. The first advertisement includes a first MAC address mobility attribute arranged to indicate a number of times the MAC address has moved with respect to the MPLS network.

摘要翻译： 在一个实施例中，一种方法包括获得设备附接到提供商边缘的指示。 该设备具有媒体访问控制（MAC）地址，其中该设备先前连接到多协议标签交换（MPLS）网络的第一提供商边缘（PE）。 该方法还包括发出标识MAC地址的第一广告。 第一广告包括被配置为指示MAC地址相对于MPLS网络移动的次数的第一MAC地址移动性属性。

公开(公告)号：US08169924B2

公开(公告)日：2012-05-01

申请号：US11296550

申请日：2005-12-07

申请人： Ali Sajassi ,  Dino Farinacci ,  John M. Zwiebel ,  Daniel Alvarez

发明人： Ali Sajassi ,  Dino Farinacci ,  John M. Zwiebel ,  Daniel Alvarez

IPC分类号： G01R31/08

CPC分类号： H04L45/00 ,  H04L45/26

摘要： A provider edge (PE) node of a network operates to send a trace path message over the network to a receiver PE node, the trace path message recording a list of intermediate nodes of a unicast path from the PE node to the receiver PE node; and receive a join message initiated from the receiver PE node, the join message using the list to propagate to the source PE node through the intermediate nodes such that a branch of a multicast tree is aligned with the unicast path. 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： 网络的提供者边缘（PE）节点操作以通过网络向接收者PE节点发送跟踪路径消息，跟踪路径消息记录从PE节点到接收者PE节点的单播路径的中间节点列表; 并接收从接收者PE节点发起的加入消息，使用该列表的加入消息通过中间节点传播到源PE节点，使得多播树的分支与单播路径对齐。 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：US20120014261A1

公开(公告)日：2012-01-19

申请号：US12835777

申请日：2010-07-14

申请人： Samer Salam ,  Ali Sajassi

发明人： Samer Salam ,  Ali Sajassi

IPC分类号： H04L12/26

CPC分类号： H04L43/10 ,  H04L43/026 ,  H04L43/0811

摘要： In certain embodiments, monitoring a flow set to detect faults includes identifying, by a first maintenance end point, a flow set comprising flows that utilize a paths from the first maintenance end point through one or more intermediate nodes to a second maintenance end point. Continuity check messages are generated. Each continuity check message is formatted as a data packet that an intermediate node forwards. Each continuity check message comprises a header comprising a maintenance indicator. The continuity check messages are transmitted on the flows to allow the second maintenance end point to monitor the paths.

摘要翻译： 在某些实施例中，监视流程集以检测故障包括由第一维护终点识别包括利用从第一维护终点通过一个或多个中间节点到第二维护终点的路径的流的流集合。 生成连续性检查消息。 每个连续性检查消息被格式化为中间节点转发的数据包。 每个连续性检查消息包括包括维护指示符的报头。 连续性检查消息在流上传输，以允许第二维护终点监视路径。