公开(公告)号：US20130242991A1

公开(公告)日：2013-09-19

申请号：US13707688

申请日：2012-12-07

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Claude Basso ,  Todd A. Greenfield ,  Bruce M. Walk

IPC: H04L12/56

CPC classification number: H04L45/16 ,  H04L49/201 ,  H04L49/351 ,  H04L49/70

Abstract: A distributed switch may include a plurality of sub-switches. These sub-switches may be arranged in a hierarchy that increases the available bandwidth for transmitting multicast data frames across the switch fabric. Moreover, the distributed switch may be compatible with link aggregation where multiple physical connections are grouped together to create an aggregated (logical) link. Link aggregation requires similar data frames to use the same data path when traversing the distributed switch. With a unicast data frame, the sub-switch in the distributed switch that receives the data frame typically identifies the destination port (during a process called link selection) and forwards the data frame to the sub-switch containing that port. However, with multicast data frames, instead of the receiving sub-switch performing link selection to determine the destination port, link selection may be done by a different sub-switch or not done at all.

公开(公告)号：US20130242988A1

公开(公告)日：2013-09-19

申请号：US13420259

申请日：2012-03-14

Applicant: Claude Basso ,  Todd A. Greenfield ,  Bruce M. Walk

Inventor： Claude Basso ,  Todd A. Greenfield ,  Bruce M. Walk

IPC: H04L12/56

CPC classification number: H04L45/16 ,  H04L49/201 ,  H04L49/351 ,  H04L49/70

Abstract: A distributed switch may include a plurality of sub-switches. These sub-switches may be arranged in a hierarchy that increases the available bandwidth for transmitting multicast data frames across the switch fabric. Moreover, the distributed switch may be compatible with link aggregation where multiple physical connections are grouped together to create an aggregated (logical) link. Link aggregation requires similar data frames to use the same data path when traversing the distributed switch. With a unicast data frame, the sub-switch in the distributed switch that receives the data frame typically identifies the destination port (during a process called link selection) and forwards the data frame to the sub-switch containing that port. However, with multicast data frames, instead of the receiving sub-switch performing link selection to determine the destination port, link selection may be done by a different sub-switch or not done at all.

Abstract translation: 分布式交换机可以包括多个子交换机。 这些子交换机可以以层次结构来布置，从而增加跨越交换结构传输多播数据帧的可用带宽。 此外，分布式交换机可以与链路聚合兼容，其中多个物理连接被分组在一起以创建聚合（逻辑）链路。 链路聚合需要相似的数据帧才能在穿过分布式交换机时使用相同的数据路径。 通过单播数据帧，接收数据帧的分布式交换机中的子交换机通常标识目的端口（在称为链路选择的过程中），并将数据帧转发到包含该端口的子交换机。 然而，使用组播数据帧，代替执行链路选择的接收子交换机来确定目的地端口，链路选择可以由不同的子交换机完成，或者根本不完成。

公开(公告)号：US20130242986A1

公开(公告)日：2013-09-19

申请号：US13420203

申请日：2012-03-14

Applicant: Claude Basso ,  Todd A. Greenfield ,  Bruce M. Walk

Inventor： Claude Basso ,  Todd A. Greenfield ,  Bruce M. Walk

IPC: H04L12/56

CPC classification number: H04L45/16 ,  H04L49/201 ,  H04L49/351 ,  H04L49/70

Abstract: A distributed switch may include a hierarchy with one or more levels of surrogate sub-switches (and surrogate bridge elements) that enable the distributed switch to scale bandwidth based on the size of the membership of a multicast group. When a sub-switch receives a multicast data frame, it forwards the packet to one of the surrogate sub-switches. Each surrogate sub-switch may then forward the packet to another surrogate in a different hierarchical level or to a destination computing device. Because the surrogates may transmit the data frame in parallel using two or more connection interfaces, the bandwidth used to forward the multicast packet increases for each surrogate used.

Abstract translation: 分布式交换机可以包括具有使得分布式交换机能够基于多播组的成员资格的大小来缩放带宽的代理子交换机（和代理桥元素）的一个或多个级别的层级。 当子交换机接收到组播数据帧时，它将数据包转发到其中一个代理子交换机。 然后，每个代理子交换机可以将分组转发到不同层级的另一个代理或转发到目的地计算设备。 由于代理可以使用两个或多个连接接口并行传输数据帧，所以用于转发组播数据包的带宽随着使用的每个代理而增加。

公开(公告)号：US08516139B2

公开(公告)日：2013-08-20

申请号：US12045399

申请日：2008-03-10

Applicant: Naofumi Kobayashi

Inventor： Naofumi Kobayashi

IPC: G06F15/16

CPC classification number: H04L45/16 ,  H04L12/185 ,  H04L41/00 ,  H04L49/201 ,  H04L49/254 ,  H04L49/351

Abstract: A multicast processing section constructs, when it is determined that a received packet is a packet on a multicast packet and multicast group management protocol, a table showing a correlation between a host device and a multicast group in a port number-multicast physical address correlation storing section as well as in a multicast router-connected port storing section according to the received packet, and controls to transfer a packet for each multicast group between a multicast router and host devices according to the table.

公开(公告)号：US20130182704A1

公开(公告)日：2013-07-18

申请号：US13729867

申请日：2012-12-28

Applicant: Cisco Technology

Inventor： Mick R. Jacobs ,  Michael A. Benning

IPC: H04L12/56

CPC classification number: H04L49/25 ,  H04L47/2441 ,  H04L47/245 ,  H04L49/101 ,  H04L49/15 ,  H04L49/201 ,  H04L49/205 ,  H04L49/254 ,  H04L49/3018

Abstract: Network switching and/or routing devices can use multiple priority data streams and queues to support prioritized serial transmission of data from line cards (or the like) through a fabric switch to other line cards (or the like). Preemption logic is used to insert within a data stream commands indicating a switch from one priority level data to another. Delimiter commands and combination switch/delimiter commands can also be used. Multiple crossbars are implemented in the fabric switch to support the various data stream priority levels.

Abstract translation: 网络交换和/或路由设备可以使用多个优先级数据流和队列来支持通过布线交换机将线路卡（或诸如此类）数据的优先级串行传输到其它线卡（等）。 抢占逻辑用于在数据流中插入指示从一个优先级数据切换到另一个优先级数据的命令。 也可以使用分隔符命令和组合开关/分隔符命令。 在结构交换机中实现多个十字路口以支持各种数据流优先级。

公开(公告)号：US08488604B2

公开(公告)日：2013-07-16

申请号：US13016696

申请日：2011-01-28

Applicant: Wenhua Du

Inventor： Wenhua Du

IPC: H04L12/54

CPC classification number: H04L45/54 ,  H04L45/16 ,  H04L49/201 ,  H04L49/203 ,  H04L49/25 ,  H04L49/30

Abstract: In the field of switching networks, a method, a device and a system for forwarding multicast packets are disclosed, which significantly reduce the requirement on the storage capacity of the switching network, thus implementing forwarding of a large number of multicast packets. The method includes: receiving a multicast packet, and a first forwarding identifier and a second forwarding identifier of the multicast packet; obtaining a destination line card corresponding to the multicast packet according to the first forwarding identifier; and forwarding the multicast packet and the second forwarding identifier to the destination line card. The method, device and system for forwarding multicast packets are applicable to situations where it is required to forward multicast packets in a single-level switching network or a multi-level switching network.

Abstract translation: 在交换网络领域，公开了一种转发组播报文的方法，设备和系统，显着降低了对交换网络存储容量的需求，从而实现了大量组播报文的转发。 该方法包括：接收组播分组，以及组播分组的第一转发标识符和第二转发标识; 根据第一转发标识获得对应于该多播包的目的地线路卡; 并将所述组播分组和所述第二转发标识符转发到所述目的线路卡。 转发组播报文的方法，设备和系统适用于需要在单层交换网络或多层交换网络中转发组播报文的情况。

公开(公告)号：US08483217B2

公开(公告)日：2013-07-09

申请号：US12720986

申请日：2010-03-10

Applicant: William B. Sebastian

Inventor： William B. Sebastian

IPC: H04L12/56

CPC classification number: H04L65/4076 ,  H04L12/18 ,  H04L45/16 ,  H04L49/201 ,  H04L67/2804 ,  H04N7/17318 ,  H04N21/2402 ,  H04N21/252 ,  H04N21/4532 ,  H04N21/6125 ,  H04N21/6405 ,  H04N21/8405

Abstract: Methods, apparatuses, and systems are provided for improving utilization of a communications system through various atom-based techniques for enhancing the viewing experience for Internet protocol content. Some embodiments exploit atom-based processing to determine which content atoms to broadcast (e.g., multicast) over which channels to which subscribers. Other embodiments make atom-based filtering, caching, and/or other determinations at the user terminal. For example, low-level (e.g., physical layer) filtering may be used to limit the amount of user-layer processing needed, and to facilitate delivery of content to those users most likely to desire that content. Still other embodiments allow users to create customized channels of cached content for viewing as a shared channel. Embodiments include techniques for addressing synchronization of channel content and viewing, and social networking, for subscribers to the shared channel. The shared channels may be further used to facilitate social networking among subscribers.

公开(公告)号：US20130156029A1

公开(公告)日：2013-06-20

申请号：US13765614

申请日：2013-02-12

Applicant: GIGAMON LLC

Inventor： Tom GALLATIN ,  Denny K. MIU ,  King L. WON ,  Patrick Pak Tak LEONG ,  Ted HO

IPC: H04L12/26

CPC classification number: H04L49/351 ,  H04L12/4641 ,  H04L12/4645 ,  H04L41/0213 ,  H04L41/046 ,  H04L41/0896 ,  H04L43/028 ,  H04L43/0823 ,  H04L43/0882 ,  H04L43/12 ,  H04L43/16 ,  H04L43/18 ,  H04L49/201 ,  H04L49/354 ,  H04L49/555 ,  H04L63/0227 ,  H04L63/1408

Abstract: The present invention relates to a packet switch and a packet switching method. An example embodiment of the present invention comprises at least three network ports, at least one instrument port, a mux-switch, a packet switch fabric, and an address table. The embodiment updates the address table to include the source address of each ingress packet of each network port and associate the source address with that network port. The mux-switch routes the ingress packet traffic of each network port according to the identity of the network port so that at least a copy of the packet traffic of one of the network ports is routed to an instrument port. The packet switch fabric routes the packets from the instrument ports to the network ports according the destination address of the packet and the identity of the network port that is associated with the destination address as recorded in the address table.

公开(公告)号：US20130136123A1

公开(公告)日：2013-05-30

申请号：US13687010

申请日：2012-11-28

Applicant: International Business Machines Corporation

Inventor： Yi Ge ,  Hang Liu ,  Yue Zhang ,  Kai Zheng

IPC: H04L12/46

CPC classification number: H04L12/4641 ,  H04L12/4645 ,  H04L12/4675 ,  H04L49/201 ,  H04L49/351

Abstract: A method and apparatus for implementing a virtual local area network. The method includes determining a global virtual local area network for transmitting a data frame in response to receiving the data frame at a first switch, encapsulating the data frame based at least in part on said determination and transmitting it to at least one second switch over the determined global virtual local area network. The data frame is received at the second switch and an identifier of the global virtual local area network is obtained according to the data frame. Based at least in part on the identifier of the global virtual local area network, it is determined that which local virtual local area network served by the second switch the de-capsulated data frame can be sent to.

Abstract translation: 一种用于实现虚拟局域网的方法和装置。 该方法包括：确定全局虚拟局域网，用于响应于在第一交换机处接收数据帧来发送数据帧，至少部分地根据所述确定封装数据帧，并将其发送到至少一个第二交换机 确定全球虚拟局域网。 在第二交换机处接收数据帧，并且根据数据帧获得全局虚拟局域网的标识符。 至少部分地基于全局虚拟局域网的标识符，确定由第二交换机服务的哪个本地虚拟局域网可以发送去封装的数据帧。

公开(公告)号：US08451730B2

公开(公告)日：2013-05-28

申请号：US11396618

申请日：2006-04-04

Applicant: William Dai

Inventor： William Dai

IPC: G01R31/08

CPC classification number: H04L12/413 ,  H04L12/42 ,  H04L49/201 ,  H04L49/352 ,  H04L49/602

Abstract: A network device for implementing a high speed transmission protocol. The network device includes a plurality of high speed modules which are connected by a plurality of high speed links. Each of the plurality of high speed modules implements the high speed transmission protocol and each of the plurality of high speed modules being implemented in an Ethernet ring topology. A medium access control layer in each of the plurality of high speed modules is modified in a manner that is transparent to a switching entity in each of the plurality of high speed modules. The high speed transmission protocol comprises a plurality of aspects including an in-banding messaging mechanism for efficient and responsive traffic management and network operation.

Abstract translation: 一种用于实现高速传输协议的网络设备。 网络装置包括通过多个高速链路连接的多个高速模块。 多个高速模块中的每一个实现高速传输协议，并且多个高速模块中的每一个以以太网环形拓扑实现。 在多个高速模块的每一个中的介质访问控制层以对多个高速模块中的每一个中的切换实体是透明的方式进行修改。 高速传输协议包括多个方面，包括用于有效和响应的业务管理和网络操作的带内消息传递机制。