Metro switch and method for transporting data configured according to multiple different formats
    21.
    发明申请
    Metro switch and method for transporting data configured according to multiple different formats 审中-公开
    Metro交换机和根据多种不同格式配置的数据传输方法

    公开(公告)号:US20020085567A1

    公开(公告)日:2002-07-04

    申请号:US09974134

    申请日:2001-10-09

    IPC分类号: H04L012/56

    摘要: A metro switch and method for transporting data configured according to multiple different formats. In one aspect, a network system and method that provides for point-to-point communication of data of various different formats such as ATM, frame relay, PPP, Ethernet, etc. Accordingly, the invention may interface disparate network devices, such as private networks and other entities that operate according to various different protocols and that use various different media. At ingress points to the system, the data is received from data sources and configured according to a universal format. This allows data from origins that use different data formats and/or transmission media to be mixed and transported onto the same media. The data is then transported to one or more destinations using this format. At egress points of the system, the data is reconverted to its original format for use at its destination. Thus, transportation of various different communication services and distribution to respective destinations is provided through a high-speed interconnect. Because the data is converted to a universal format and reconverted to its original format as needed, various different data formats may be accommodated and may share the same communication media.

    摘要翻译: 一种城域交换机和方法,用于传输根据多种不同格式配置的数据。 在一方面,提供了诸如ATM,帧中继,PPP,以太网等各种不同格式的数据的点对点通信的网络系统和方法。因此,本发明可以接入不同的网络设备,诸如私有 网络和其他根据各种不同协议操作并使用各种不同媒体的实体。 在入口指向系统时,数据从数据源接收并根据通用格式进行配置。 这允许使用不同数据格式和/或传输介质的来源的数据被混合并传输到相同的介质上。 然后使用此格式将数据传输到一个或多个目的地。 在系统的出口点,数据将重新转换为其原始格式,以便在其目的地使用。 因此,通过高速互连提供各种不同的通信服务和分配到各个目的地的传送。 由于数据被转换为通用格式并根据需要重新转换为其原始格式,所以可以容纳各种不同的数据格式并且可以共享相同的通信介质。

    Programmable architecture fast packet switch
    23.
    发明授权
    Programmable architecture fast packet switch 失效
    可编程架构快速分组交换机

    公开(公告)号:US06275491B1

    公开(公告)日:2001-08-14

    申请号:US09086779

    申请日:1998-05-28

    IPC分类号: H04J324

    摘要: A programmable fast packet switch testbed (10) for use in the evaluation of prototype architectures and traffic management algorithms is disclosed. The programmable switch (10) is arranged as an add-on peripheral to a conventional computer system including a host central processing unit (CPU) (2). The switch (10) includes a plurality of port processors (14) in communication with port interfaces (12); each of the port interfaces (12) is a conventional interface for high data rate communication, while the port processors (14) are programmable logic devices. The switch fabric is realized in a multiple slice fashion, by multiple programmable logic devices (18). A central arbiter (30), also realized in programmable logic, controls routing of cells within the switch (10). Programming of the port processors (14), fabric slices (18), and arbiter (30) is effected by downloading, into these devices, bit-streams supplied by the host CPU (2) that define the switch architecture, including selection of input or output queuing and the fabric type, along with the implementation of traffic management algorithms in the port processors (14), fabric slices (18), and arbiter (30). Each of the port processors (14), fabric slices (18), and arbiter (30) also contain memory locations for storing results of operation, which are read by the management port (24) over a management bus (COMET), and may then be forwarded to the host CPU (2), without interfering with switch traffic. The programmable switch (10) is therefore capable of full speed operation as a fast packet switch, thus providing accurate evaluation results.

    摘要翻译: 公开了一种可用于评估原型架构和流量管理算法的可编程快速分组交换机测试台(10)。 可编程开关(10)被布置为包括主机中央处理单元(CPU)(2)的常规计算机系统的附加外围设备。 交换机(10)包括与端口接口(12)通信的多个端口处理器(14)。 每个端口接口(12)是用于高数据速率通信的常规接口,而端口处理器(14)是可编程逻辑器件。 交换结构由多个可编程逻辑器件(18)以多切片方式实现。 在可编程逻辑中实现的中央仲裁器(30)控制开关(10)内的单元的布线。 端口处理器(14),结构片(18)和仲裁器(30)的编程通过将定义开关结构的主机CPU(2)提供的比特流下载到这些设备中来实现,包括选择输入 或者输出队列和结构类型,以及端口处理器(14),结构片(18)和仲裁器(30)中的流量管理算法的实现。 每个端口处理器(14),结构片(18)和仲裁器(30)还包含用于存储由管理端口(24)经由管理总线(COMET)读取的操作结果的存储器位置,并且可以 然后转发到主机CPU(2),而不会干扰交换机流量。 因此,可编程开关(10)能够作为快速分组交换机进行全速操作,从而提供准确的评估结果。

    Network node for switching digital information of different protocol types
    24.
    发明申请
    Network node for switching digital information of different protocol types 有权
    用于切换不同协议类型的数字信息的网络节点

    公开(公告)号:US20010003524A1

    公开(公告)日:2001-06-14

    申请号:US09729776

    申请日:2000-12-06

    IPC分类号: H04L012/56

    摘要: A network node (10) for switching digital information of different protocol types is described. A plurality of modules (12-x, 13-x, 14-x) are provided which are arranged in an input stage (12), a central stage (13) and an output stage (14). Each module (12-x) of the input stage (12) is connected to each module (13-x) of the central stage (13) and each module (13-x) of the central stage (13) is connected to each module (14-x) of the output stage (14). A standard interface (15) for all protocol types is in each case provided between the input stage (12) and the central stage (13) and between the central stage (13) and the output stage (14). Each of the modules (13-x) of the central stage (13) is designed for one protocol type. The interfaces (15) comprise means for forwarding information as a function of the protocol type to a module (13-x) of the central stage (13) adapted thereto.

    摘要翻译: 描述用于切换不同协议类型的数字信息的网络节点(10)。 设置有多个模块(12-x,13-x,14-x),其布置在输入级(12),中央级(13)和输出级(14)中。 输入级(12)的每个模块(12-x)连接到中央级(13)的每个模块(13-x),并且中央级(13)的每个模块(13-x)连接到每个 模块(14-x)。 在每种情况下,在输入级(12)和中央级(13)之间以及中央级(13)和输出级(14)之间提供所有协议类型的标准接口(15)。 中央级(13)的每个模块(13-x)被设计用于一种协议类型。 接口(15)包括用于将信息作为协议类型的函数转发到适于其的中央级(13)的模块(13-x)的装置。

    Switching system comprising distributed elements allowing attachment to
line adapters, and having multicasting capabilities
    26.
    发明授权
    Switching system comprising distributed elements allowing attachment to line adapters, and having multicasting capabilities 失效
    交换系统包括允许附加到线路适配器并具有多播功能的分布式元件

    公开(公告)号:US6125114A

    公开(公告)日:2000-09-26

    申请号:US992015

    申请日:1997-12-17

    摘要: A switching system comprising a switching structure for routing cells from a set of M input ports towards a set of M output ports. The system includes a set of distributed individual Switch Core Access layer elements which communicate with one input and output port of the switching structure by means of a set of serial communication links. Each SCAL element provides attachment to at least one Protocol Adapter and comprises a set of circuits. The receive part of each circuit includes means for introducing at least one extra byte to every cell. The extra byte is reserved for carrying a routing header for controlling the switching structure in a first step, and then for use by the PINT circuit when the cell will be received by the transmit part in a second step. The transmit part of each PINT circuit comprises a control module that receives all the cells generated at the corresponding output port and controls whether to discard the cell based on the value of the extra byte.

    摘要翻译: 一种交换系统,包括用于将一组M个输入端口的单元路由到一组M个输出端口的交换结构。 该系统包括一组分布式的交换机核心接入层元件,它们通过一组串行通信链路与交换结构的一个输入和输出端口通信。 每个SCAL元件提供至少一个协议适配器的附件,并且包括一组电路。 每个电路的接收部分包括用于向每个单元引入至少一个额外字节的装置。 额外的字节被保留用于携带用于在第一步骤中控制交换结构的路由报头,然后由PINT电路用于第二步中由发送部分接收信元。 每个PINT电路的发送部分包括控制模块,其接收在相应输出端口处生成的所有单元,并根据额外字节的值来控制是否丢弃该单元。

    Method of and system for exchanging information of payload fields of ATM
cells
    27.
    发明授权
    Method of and system for exchanging information of payload fields of ATM cells 失效
    交换ATM信元有效载荷信息的方法和系统

    公开(公告)号:US6044078A

    公开(公告)日:2000-03-28

    申请号:US825915

    申请日:1997-04-02

    申请人: Hisashi Manabe

    发明人: Hisashi Manabe

    摘要: A method of and a system for exchanging information of payload field of ATM cells wherein the minimum exchanging unit is 1 byte removing the limitation of the current ATM exchanging unit to 48 bytes (1 cell). The payload fields of ATM cells are divided into units of 8.times.N bits to effect exchanging operation, and the exchanging operation is performed by a function of copying ATM cells and rearrangement in position of information of payload field. The rearrangement in position of information of payload field is performed by a position switch which performs rearrangement within an ATM cell and between ATM cells. The position switch selects divided part informations in the payload fields with a signaling signal. The division of the payload field into units of 8.times.N bits may be a division other than a division beginning with the first bit of an ATM cell immediately following a header.

    摘要翻译: 一种用于交换ATM信元的有效载荷域的信息的方法和系统,其中最小交换单元是1字节,将当前ATM交换单元的限制移除到48字节(1个小区)。 ATM信元的有效载荷字段被划分为8×N位的单位以进行交换操作,并且通过复制ATM信元和在有效载荷字段的信息的位置重排的功能来执行交换操作。 有效负载字段的信息位置的重新排列由在ATM信元内和ATM信元之间进行重排的位置切换进行。 位置开关用信号信号选择有效载荷字段中的分割部分信息。 将有效负载字段划分为8×N位的单元可以是除了紧随在报头之后的ATM信元的第一位开始的除法之外的除法。

    Multipurpose synchronous switch architecture
    28.
    发明授权
    Multipurpose synchronous switch architecture 失效
    多功能同步开关架构

    公开(公告)号:US6041055A

    公开(公告)日:2000-03-21

    申请号:US716253

    申请日:1996-10-24

    申请人: Geoffrey Chopping

    发明人: Geoffrey Chopping

    摘要: The flexibility of a telecommunications switch fabric can be improved by making the fabric multipurpose. Where a switch fabric has two or more switches of different granularities, they may be connected by a terminating device in which the higher granularity circuits from the first switch are terminated and demultiplexed into the lower granularity circuits for the second switch, in addition to the lower granularity circuits from the second switch being multiplexed together to form higher granularity circuits for the first switch.

    摘要翻译: PCT No.PCT / GB95 / 00661 Sec。 371日期1996年10月24日第 102(e)日期1996年10月24日PCT 1995年3月23日PCT公布。 WO95 / 26600 PCT出版物 日期1995年10月5日通过使结构多用途,可以提高电信交换结构的灵活性。 在交换结构具有不同粒度的两个或更多个交换机的情况下,它们可以通过终端设备来连接,其中来自第一交换机的较高粒度电路被终止并且被解复用到第二交换机的下粒度电路中, 来自第二开关的粒度电路被多路复用以形成用于第一开关的较高粒度电路。