公开(公告)号：US20140192804A1

公开(公告)日：2014-07-10

申请号：US13737919

申请日：2013-01-09

Applicant: DELL PRODUCTS L.P.

Inventor： Anoop Ghanwani ,  Krishnamurthy Subramanian ,  Mohnish Anumala ,  Shivakumar Sundaram ,  Pathangi Janardhanan

IPC: H04L12/18 ,  G06F9/455

CPC classification number: H04L12/18 ,  G06F9/45558 ,  G06F9/5072 ,  G06F2009/45595 ,  H04L12/185 ,  H04L45/021 ,  H04L49/201 ,  H04L49/70 ,  H04L61/103

Abstract: An information handling system is provided. The information handling system includes a first hypervisor running on a first host and a second hypervisor running on a second host. The first hypervisor managing a first virtual switch, and the second hypervisor managing a second virtual switch. The information handling system also includes a plurality of virtual machines (VMs), including a first VM, which is part of a first tenant, running on the first host, and a second VM, part of a second tenant, running on the second host. The first virtual switch has a mapping in memory that maps a customer-specific multicast IP address, used by the plurality of VMs to indicate a multicast group that includes VMs on the first and second tenants, to a global multicast IP address used by the first and second hosts.

Abstract translation: 提供信息处理系统。 信息处理系统包括在第一主机上运行的第一虚拟机管理程序和在第二主机上运行的第二管理程序。 管理第一虚拟交换机的第一管理程序，以及管理第二虚拟交换机的第二管理程序。 信息处理系统还包括多个虚拟机（VM），其包括作为在第一主机上运行的第一租户的一部分的第一VM和在第二主机上运行的第二租户的第二VM 。 所述第一虚拟交换机具有映射存储器中的映射，所述映射映射由所述多个VM使用的用户特定的多播IP地址，以将包括所述第一和第二租户的VM的多播组指示到所述第一 和第二主机。

公开(公告)号：US08717944B2

公开(公告)日：2014-05-06

申请号：US13593190

申请日：2012-08-23

Applicant: Chia Alex Tsai ,  Yibin Yang ,  Minjie Lin ,  Yuchen Zhou ,  Weng Hong Chan

Inventor： Chia Alex Tsai ,  Yibin Yang ,  Minjie Lin ,  Yuchen Zhou ,  Weng Hong Chan

IPC: H04L12/28

CPC classification number: H04L49/201 ,  H04L45/12 ,  H04L45/48 ,  H04L45/66 ,  H04L49/65

Abstract: In one embodiment, a plurality of leaf switches that include host facing ports are configured as a cloud switch. An indication of connectivity between the leaf switches of the cloud switch and routing bridges (RBridges) external to the cloud switch may be added to link state packets (LSPs) sent over the at least one logical shared media link. A lookup table may be generated that specifies next hop leaf switches. The generated lookup table may be used to forward frames to one or more particular nexthop leaf switches. Further, traffic engineering parameters may be collected. Equal cost multipath (ECMP) nexthop leaf switches and distribution trees to reach one or more destinations may be examined. Traffic may be distributed across ones of them based on the traffic engineering parameters.

Abstract translation: 在一个实施例中，包括主机面向端口的多个叶片交换机被配置为云交换机。 可以将云交换机的叶交换机和云交换机外部的路由网桥（RBridge）之间的连接性的指示添加到通过至少一个逻辑共享媒体链路发送的链路状态分组（LSP）。 可以生成一个指定下一跳叶切换的查找表。 生成的查找表可以用于将帧转发到一个或多个特定的下一页叶开关。 此外，可以收集交通工程参数。 可以检查等成本多路径（ECMP）下一叶叶开关和分布树到达一个或多个目的地。 流量可以根据流量工程参数分布在其中。

公开(公告)号：US20140078923A1

公开(公告)日：2014-03-20

申请号：US14057579

申请日：2013-10-18

Applicant: FUJITSU LIMITED

Inventor： Na GUAN ,  Lin TIAN ,  Yi HUANG ,  Weiwei WANG ,  Hua ZHOU

IPC: H04W24/10

CPC classification number: H04W36/0016 ,  H04L49/201 ,  H04W4/06 ,  H04W24/10 ,  H04W36/0005 ,  H04W36/0022

Abstract: An information acquiring method and a base station. The method comprises: receiving by a target base station reception status information of a multimedia broadcast multicast service of user equipment reported by a source base station when the user equipment is handed over between cells; wherein the reception status information comprises information indicating that the user equipment is receiving a multimedia broadcast multicast service, or information indicating that the user equipment finishes receiving a multimedia broadcast multicast service. With the embodiments of the present invention, the source base station of the user equipment notifies the target base station of reception status information of multimedia broadcast multicast service of the user equipment when the user equipment is handed over between cells, thereby guaranteeing the continuity of the MBMS of the user equipment.

Abstract translation: 信息获取方法和基站。 该方法包括：当用户设备在小区之间切换时，由目标基站接收由源基站报告的用户设备的多媒体广播多播服务的接收状态信息; 其中，所述接收状态信息包括指示所述用户设备正在接收多媒体广播多播服务的信息，或指示所述用户设备完成接收多媒体广播多播服务的信息。 利用本发明的实施例，当用户设备在小区之间切换时，用户设备的源基站向目标基站通知用户设备的多媒体广播多播服务的接收状态信息，从而保证用户设备的连续性 MBMS用户设备。

公开(公告)号：US20140071988A1

公开(公告)日：2014-03-13

申请号：US13894484

申请日：2013-05-15

Applicant: Cisco Technology, Inc.

Inventor： Mingzhe Li

IPC: H04L12/18

CPC classification number: H04L12/18 ,  G06F3/0484 ,  G06T11/60 ,  H04L45/16 ,  H04L49/201

Abstract: A multi-destination expansion table is stored that comprises a first database containing data representing all nodes in a singly linked list that is a superset of nodes for a plurality of multi-destination groups and a second database storing data representing multi-destination group specific arcs across one or more nodes. The singly linked list is traversed to determine how to replicate a packet for a particular multi-destination group. The packet is replicated based on interface data stored in the first database associated with the current node address. When a match is found in the second database, a next node address is determined from the second database. When a match is not found in the second database, a next node address determined from accessing the first database. Traversing of the singly linked list is terminated when the next node address is determined to be invalid or null.

Abstract translation: 存储多目的地扩展表，其包括第一数据库，其包含表示作为多个多目的地组的节点的超集合的单链表中的所有节点的数据，以及存储表示多目的地组特定弧的数据的第二数据库 跨越一个或多个节点。 遍历单链表以确定如何复制特定多目标组的数据包。 基于存储在与当前节点地址相关联的第一数据库中的接口数据来复制分组。 当在第二数据库中找到匹配时，从第二数据库确定下一个节点地址。 当在第二数据库中找不到匹配时，从访问第一数据库确定下一个节点地址。 当下一个节点地址被确定为无效或为空时，单链接列表的遍历将被终止。

公开(公告)号：US20140056178A1

公开(公告)日：2014-02-27

申请号：US13593190

申请日：2012-08-23

Applicant: Chia Alex Tsai ,  Yibin Yang ,  Minjie Lin ,  Yuchen Zhou ,  Weng Hong Chan

Inventor： Chia Alex Tsai ,  Yibin Yang ,  Minjie Lin ,  Yuchen Zhou ,  Weng Hong Chan

IPC: H04L12/28

CPC classification number: H04L49/201 ,  H04L45/12 ,  H04L45/48 ,  H04L45/66 ,  H04L49/65

Abstract: In one embodiment, a plurality of leaf switches that include host facing ports are configured as a cloud switch. An indication of connectivity between the leaf switches of the cloud switch and routing bridges (RBridges) external to the cloud switch may be added to link state packets (LSPs) sent over the at least one logical shared media link. A lookup table may be generated that specifies next hop leaf switches. The generated lookup table may be used to forward frames to one or more particular nexthop leaf switches. Further, traffic engineering parameters may be collected. Equal cost multipath (ECMP) nexthop leaf switches and distribution trees to reach one or more destinations may be examined. Traffic may be distributed across ones of them based on the traffic engineering parameters.

Abstract translation: 在一个实施例中，包括主机面向端口的多个叶片交换机被配置为云交换机。 可以将云交换机的叶交换机和云交换机外部的路由网桥（RBridge）之间的连接性的指示添加到通过至少一个逻辑共享媒体链路发送的链路状态分组（LSP）。 可以生成一个指定下一跳叶切换的查找表。 生成的查找表可以用于将帧转发到一个或多个特定的下一页叶开关。 此外，可以收集交通工程参数。 可以检查等成本多路径（ECMP）下一叶叶开关和分布树到达一个或多个目的地。 流量可以根据流量工程参数分布在其中。

公开(公告)号：US08661172B2

公开(公告)日：2014-02-25

申请号：US10568046

申请日：2004-03-02

Applicant: Carl Christensen ,  Lynn Howard Arbuckle

Inventor： Carl Christensen ,  Lynn Howard Arbuckle

IPC: G06F13/00

CPC classification number: G06F13/10 ,  H04L49/201 ,  H04L49/45 ,  H04L49/65 ,  H05K7/10

Abstract: There is provided a broadcast router that includes a plurality of input cards, a plurality of output cards, at least one programmable device, and a configuration control card. The plurality of input cards input data into the broadcast router. The plurality of output cards output the data from the broadcast router. The configuration control card stores configuration information for configuring the at least one programmable device to perform a first set of functions. The configuration control card is adapted for removal and replacement by at least one other configuration control card that stores other configuration information for configuring the at least one programmable device to perform a second set of functions having a difference from the first set of functions so as to change a functionality of the broadcast router.

Abstract translation: 提供了包括多个输入卡，多个输出卡，至少一个可编程装置和配置控制卡的广播路由器。 多个输入卡将数据输入广播路由器。 多个输出卡从广播路由器输出数据。 配置控制卡存储用于配置至少一个可编程设备以执行第一组功能的配置信息。 所述配置控制卡适于由至少一个其他配置控制卡进行移除和替换，所述其他配置控制卡存储用于配置所述至少一个可编程设备的其他配置信息，以执行与所述第一组功能不同的第二组功能，以便 改变广播路由器的功能。

公开(公告)号：US20140003428A1

公开(公告)日：2014-01-02

申请号：US14004489

申请日：2012-03-07

Applicant: Lin Li ,  Yuehua Wei ,  Jinghai Yu ,  Ting Ao

Inventor： Lin Li ,  Yuehua Wei ,  Jinghai Yu ,  Ting Ao

IPC: H04L12/18

CPC classification number: H04L12/18 ,  H04L12/287 ,  H04L12/56 ,  H04L45/16 ,  H04L49/201

Abstract: Disclosed are a multicast data forwarding method and device supporting a virtual terminal. The method includes: a bridge forwarding module receiving multicast data sent by an end station and determining output ports; when a certain output port is the same with the input port of the multicast data and the input port has enabled reflective relay function, not carrying Ingress extended channel identifier (Ingress_E-CID) in the forwarded message information or the value of the Ingress_E-CID being zero. By modifying the source port filtering mechanism, the present invention enables a Port Extender (PE) supporting the virtual terminal technology to transmit and receive data normally while multicasting.

Abstract translation: 公开了支持虚拟终端的多播数据转发方法和装置。 该方法包括：桥接转发模块，接收终端发送的组播数据，并确定输出端口; 当某个输出端口与组播数据的输入端口相同，并且输入端口启用了反射中继功能时，在转发的消息信息中不携带Ingress扩展信道标识符（Ingress_E-CID）或Ingress_E-CID的值 为零。 通过修改源端口过滤机制，本发明使支持虚拟终端技术的端口扩展器（PE）能够在组播时正常发送和接收数据。

公开(公告)号：US20130336319A1

公开(公告)日：2013-12-19

申请号：US13646547

申请日：2012-10-05

Applicant: Liwu LIU ,  Jianlin Zeng

Inventor： Liwu LIU ,  Jianlin Zeng

IPC: H04L12/56

CPC classification number: H04L12/1886 ,  H04L12/18 ,  H04L12/1881 ,  H04L47/15 ,  H04L47/215 ,  H04L47/30 ,  H04L47/32 ,  H04L47/527 ,  H04L47/621 ,  H04L47/6215 ,  H04L47/629 ,  H04L47/6295 ,  H04L49/201 ,  H04L65/4076 ,  H04L65/80 ,  H04L69/08 ,  H04W4/06 ,  H04W28/0268 ,  H04W28/14

Abstract: A technique allows stations to utilize an equal share of resources (e.g., airtime or throughput). This prevents slow stations from consuming too many resources (e.g., using up too much air time). Fairness is ensured by selective dropping after a multicast packet is converted to unicast. This prevents slow stations from using more than their share of buffer resources. Multicast conversion aware back-pressure into the network layer can be used to prevent unnecessary dropping of packets after multicast to unicast (1:n) conversion by considering duplicated transmit buffers. This technique helps achieve airtime/resource fairness among stations.

公开(公告)号：US08605722B1

公开(公告)日：2013-12-10

申请号：US12759850

申请日：2010-04-14

Applicant: Pradeep Sindhu ,  Jean-Marc Frailong ,  Sarin Thomas ,  Srihari Vegesna ,  David J. Ofelt ,  Chang-Hong Wu

Inventor： Pradeep Sindhu ,  Jean-Marc Frailong ,  Sarin Thomas ,  Srihari Vegesna ,  David J. Ofelt ,  Chang-Hong Wu

IPC: H04L12/28

CPC classification number: H04L45/16 ,  H04L12/1863 ,  H04L49/201 ,  H04L49/90 ,  H04L67/1095

Abstract: In general, the invention is directed to techniques for reducing deadlocks that may arise when performing fabric replication. For example, as described herein, a network device includes packet replicators that each comprises a plurality of resource partitions. A replication data structure for a packet received by the network device includes packet replicator nodes that are arranged hierarchically to occupy one or more levels of the replication data structure. Each of the resource partitions in each of the plurality of packet replicators is associated with a different level of the replication data structure. The packet replicators replicate the packet according to the replication data structure, and each of the packet replicators handles the packet using the one of the resource partitions of the packet replicator that is associated with the level of the replication data structure occupied by the node that corresponds to that particular packet replicator.

公开(公告)号：US08572278B2

公开(公告)日：2013-10-29

申请号：US11848430

申请日：2007-08-31

Applicant: David S. Bill ,  Scott K. Brown ,  William J. Raduchel ,  Gilbert G. Weigand ,  Christopher L. Amen-Kroeger

Inventor： David S. Bill ,  Scott K. Brown ,  William J. Raduchel ,  Gilbert G. Weigand ,  Christopher L. Amen-Kroeger

IPC: G06F15/16 ,  H04Q11/00

CPC classification number: H04L49/206 ,  H04L49/201

Abstract: A switch having a first communications interface to receive a stream of data units, a buffer to store the payload portion of the data unit, a replicator to duplicate at least the payload portion of the data unit, and a second communications interface to enable access to the stream of data units by two or more terminals.