公开(公告)号：US5606664A

公开(公告)日：1997-02-25

申请号：US46405

申请日：1993-04-12

申请人： Brian Brown ,  Shabbir A. Chowdhury ,  Jean-Luc Fontaine ,  Chao-Yu Liang ,  Ronald V. Schmidt ,  Chang-Jung Wang

发明人： Brian Brown ,  Shabbir A. Chowdhury ,  Jean-Luc Fontaine ,  Chao-Yu Liang ,  Ronald V. Schmidt ,  Chang-Jung Wang

IPC分类号： G06F11/30 ,  G06F11/32 ,  H04L12/24 ,  G06F15/16 ,  G06F15/177 ,  H04L12/28

CPC分类号： H04L41/12 ,  G06F11/3006 ,  G06F11/3048 ,  G06F11/3055 ,  H04L41/22 ,  H04L41/24 ,  H04L41/26 ,  G06F11/32 ,  Y10S715/969 ,  Y10S715/97

摘要： Apparatus for monitoring and displaying the status of a local area network. The network includes a hub with ports for connection to various data terminal equipment in a star configuration and for connection to other hubs of the network. The hubs each have different types of plug-in modules which have ports for connecting the hub to different types of network cable such as fiber optic cable, unshielded twisted pair cable and shielded twisted pair cable. Information is automatically provided to a control console identifying the types of modules and the location of the modules in the hub so that an image of the actual hub can be displayed on the screen of the control console. The actual hub image shows the location and types of modules installed in the hub. In addition, information regarding the connection of each of the hubs to other hubs of the network is obtained and provided to the control console. The information is processed so as to automatically produce a topology map on the control console display showing the overall topology of the network.

摘要翻译： 用于监视和显示局域网状态的装置。 该网络包括具有用于连接到星形配置中的各种数据终端设备并用于连接到网络的其他集线器的端口的集线器。 集线器各有不同类型的插入式模块，它们具有用于将集线器连接到不同类型的网络电缆的端口，例如光纤电缆，非屏蔽双绞线电缆和屏蔽双绞线电缆。 信息自动提供给控制台，以便识别模块的类型和集线器中模块的位置，以便可以在控制台的屏幕上显示实际集线器的图像。 实际的集线器映像显示了集线器中安装的模块的位置和类型。 此外，获得关于每个集线器与网络的其他集线器的连接的信息并将其提供给控制台。 处理信息，以便在控制台显示屏上自动生成拓扑图，显示网络的总体拓扑。

公开(公告)号：US5889776A

公开(公告)日：1999-03-30

申请号：US791868

申请日：1997-01-31

申请人： Chao-Yu Liang

发明人： Chao-Yu Liang

IPC分类号： H04L12/56 ,  H04L12/44

CPC分类号： H04L49/25 ,  H04L49/351

摘要： A physical switch system employing a N:M switch circuit, coupled with a layer 2 switch at one end and with a network interface at the other end, for data network system is disclosed. The N:M switch comprises N number of ports on one side and M number of ports on the other side, wherein N and M are not necessarily the same. Based on the addresses describing each of the ports, the N:M switch is capable of establishing electronic links between the ports on both sides and further disengaging the links therebetween upon detecting the completion of data transmission. The disclosed switch system provides an efficient switching mechanism of rescalabitity and modularity in network switch systems.

摘要翻译： 公开了一种采用N：M开关电路的物理交换机系统，与一端的第二层交换机和另一端的网络接口一起用于数据网络系统。 N：M交换机包括一侧的N个端口和另一侧的M个端口，其中N和M不一定相同。 基于描述每个端口的地址，N：M交换机能够在两侧的端口之间建立电子链路，并且在检测到数据传输完成之后进一步分离它们之间的链路。 所公开的交换机系统在网络交换机系统中提供了高可靠性和模块化的高效交换机制。

公开(公告)号：US5319644A

公开(公告)日：1994-06-07

申请号：US933394

申请日：1992-08-21

申请人： Chao-Yu Liang

发明人： Chao-Yu Liang

IPC分类号： H04L12/42 ,  H04L12/46

CPC分类号： H04L12/42

摘要： A method and apparatus for associating stations to a port on a network concentrator. The network concentrator implements a network having a Ring based topology. Associating stations to ports provides for the coupling of multiple stations to a single port. Three maps are created which describe the network, a port map, a station map and an exit station map. The port map identifies the ports having one or more stations coupled to it. The station map identifies each station in the network. The exit station map identifies for each port with a station coupled to it, the station which transmits data into the port. By identifying the stations between two exit stations on adjacent ports in the network concentrator, the stations coupled to a port are determined. The identification of exit stations is facilitated by the use of an exit station detection circuit located at the port.

摘要翻译： 一种用于将站点与网络集中器上的端口相关联的方法和装置。 网络集中器实现具有基于环的拓扑的网络。 将站点与端口相关联，可将多个站点耦合到单个端口。 创建了三个映射，描述网络，端口映射，站点映射和出站站图。 端口映射标识具有与其耦合的一个或多个站的端口。 车站地图识别网络中的每个车站。 出站台地图识别每个端口与一个与之相连的站，该站将数据发送到端口。 通过识别网络集中器中相邻端口上的两个出站之间的站，确定耦合到端口的站。 通过使用位于港口的出站检测电路便利出口站的识别。

公开(公告)号：US5933427A

公开(公告)日：1999-08-03

申请号：US812379

申请日：1997-03-05

申请人： Chao-Yu Liang

发明人： Chao-Yu Liang

IPC分类号： H04L12/56 ,  H04L12/50 ,  H04Q11/00

CPC分类号： H04L49/25 ,  H04L49/351

摘要： It is disclosed hereby that a switch system comprises a N:M switch circuit, a plurality of layer 2 switches, each comprising a plurality of packet processing channels, and a plurality of network interfaces, each comprising a fixed number of pairs of ports to be directly connected to the same number of devices. The N:M switch is coupled with the N number of the packet processing channels of the layer 2 switches at the N-side and with the M number of the ports of the network interfaces at the M-side. When a packet containing a destination to a receiving device sent by a sending device arrives at the network interface, the N:M switch establishes an electronic connection between an available packet processing channel and a port to which the sending device is connected, the packet passes through to the packet processing channel in which the packet is processed and stored. The N:M switch establishes another connection between the packet processing channel and a new port of the network interface to which the receiving device is connected to, thereby the stored packet passes through to the receiving device to finish a transmission of the packet between the sending device and the receiving device.

摘要翻译： 因此公开了一种开关系统，包括：N：M开关电路，多个第2层开关，每个包括多个分组处理通道，以及多个网络接口，每个网络接口包括固定数量的端口对 直接连接到相同数量的设备。 N：M交换机与N侧的第2层交换机的N个数据包处理通道和M侧的网络接口的M个端口相连。 当包含发送设备发送的接收设备的目的地的分组到达网络接口时，N：M交换机在可用分组处理信道与发送设备连接的端口之间建立电子连接，分组通过 直到处理和存储分组的分组处理信道。 N：M交换机在分组处理信道和接收设备连接的网络接口的新端口之间建立另一连接，从而存储的分组通过接收设备完成分组在发送之间的传输 设备和接收设备。

公开(公告)号：US5537099A

公开(公告)日：1996-07-16

申请号：US245812

申请日：1994-05-18

申请人： Chao-Yu Liang

发明人： Chao-Yu Liang

IPC分类号： H04L12/22 ,  H04L12/44 ,  H04L29/06 ,  H04Q1/00

CPC分类号： H04L12/44 ,  H04L12/22 ,  H04L63/0227

摘要： A method and apparatus for preventing intrusive access to a network. The method and apparatus are implemented in a network having a star topology. Utilizing a network management module of a network concentrator as a centralized functional base, unauthorized Data Terminal Elements (DTEs) may be prevented from transmitting messages on a network. By providing a centrally located means by which a set of unique DTE addresses can be associated with a particular port on the network concentrator, valid DTE addresses can be associated with a message packet that contains the address of the transmitting DTE. If the DTE address matches those associated with the port from which it was received, the message packet is authorized. If the DTE address does not match those addresses associated with from which it was received, the message packet is unauthorized. When an unauthorized message packet is received, the port from which the frame was received, is partitioned. The centralized approach utilizing a network manager as a functional base has certain advantages in comparison to distributed security implementations. Such advantages include lower cost and the ease of using existing network management functionality.

摘要翻译： 一种用于防止对网络的入侵访问的方法和装置。 该方法和装置在具有星形拓扑的网络中实现。 利用网络集中器的网络管理模块作为集中式功能基础，可以防止未经授权的数据终端元件（DTE）在网络上传输消息。 通过提供一个集中定位的方式，一组唯一的DTE地址可以与网络集线器上的特定端口相关联，有效的DTE地址可以与包含发送DTE的地址的消息包相关联。 如果DTE地址与其接收到的端口相关联的地址匹配，那么该消息包被授权。 如果DTE地址与那些与其相关的地址不匹配，那么该消息包是未授权的。 当接收到未经授权的消息包时，接收到帧的端口被分区。 与分布式安全实现相比，利用网络管理器作为功能基础的集中式方法具有一定的优势。 这些优点包括降低成本和易于使用现有的网络管理功能。