公开(公告)号：US5910955A

公开(公告)日：1999-06-08

申请号：US921872

申请日：1997-08-25

申请人： Takashi Nishimura ,  Naohide Sekiya ,  Takeshi Kimura ,  Hideki Inoue ,  Hiroshi Nagano ,  Ikuo Taoka

发明人： Takashi Nishimura ,  Naohide Sekiya ,  Takeshi Kimura ,  Hideki Inoue ,  Hiroshi Nagano ,  Ikuo Taoka

IPC分类号： H04Q11/04 ,  H04L12/28 ,  H04L12/44 ,  H04L12/46

CPC分类号： H04L12/4645 ,  H04L12/4625

摘要： In a switching hub capable of realizing a high-speed LAN communication, this switching hub is equipped with a switch unit and a plurality of ports connected to this switch unit. When a frame is received from a terminal, each of these ports attaches a tag to which a transmission source LAN number has been set to this received frame, and thereafter supplies the frame with this tag to the switch unit. When the frame with tag is received from another port within another switching hub, the port directly supplies this frame with tag to the switch unit. The switch unit registers the transmission source LAN number of the supplied frame, a transmission source MAC address, and an input port number into a LAN table. While such a port for supplying a frame is determined, either a transmission source address of this frame or a transmission source LAN number thereof is used as a retrieve key so as to try to read out the port number from the LAN table. In the case that the port number cannot be read out, the switch unit performs the broadcast operation. When the destination LAN number can be found out by retrieving the LAN table, the next switching hub is notified by setting a tag to this destination LAN number.

摘要翻译： 在能够实现高速LAN通信的交换集线器中，该交换集线器配备有开关单元和连接到该开关单元的多个端口。 当从终端接收到帧时，这些端口中的每一个将已经设置有发送源LAN号码的标签附加到该接收帧，然后将该标签的帧提供给开关单元。 当带有标签的帧从另一个交换集线器中的另一端口接收时，端口直接将该帧带有标签给交换机单元。 开关单元将所提供的帧的发送源LAN号，发送源MAC地址和输入端口号注册到LAN表中。 虽然确定了用于提供帧的这种端口，但是将该帧的发送源地址或其发送源LAN号码用作检索密钥，以尝试从LAN表中读出端口号。 在无法读出端口号的情况下，开关单元进行广播操作。 当通过检索LAN表可以找出目的地LAN号码时，通过将标签设置到该目的LAN号码来通知下一个交换集线器。

公开(公告)号：US5982773A

公开(公告)日：1999-11-09

申请号：US822831

申请日：1997-03-24

申请人： Takashi Nishimura ,  Naohide Sekiya ,  Takeshi Kimura ,  Hideki Inoue ,  Hiroshi Nagano ,  Ikuo Taoka

发明人： Takashi Nishimura ,  Naohide Sekiya ,  Takeshi Kimura ,  Hideki Inoue ,  Hiroshi Nagano ,  Ikuo Taoka

IPC分类号： H04Q3/00 ,  H04L12/46 ,  H04L12/66 ,  H04L12/70 ,  H04Q11/04 ,  H04L12/28

CPC分类号： H04Q11/0478 ,  H04L12/4608 ,  H04L2012/5617 ,  H04L2012/562

摘要： A local area network (LAN) connection method runs an existing LAN application in an asynchronous transfer mode (ATM) network to connect LANS. The LAN connection method includes the steps of (a) in a LAN emulation (LANE) protocol which operates an existing network in the ATM network, connecting LAN emulation servers (LESs) which mainly cope with addresses from medial access control (MAC) addresses to ATM addresses in emulated LANs (ELANs) by a virtual channel connection (VCC) for transferring a LAN emulation address resolution protocol (LE ARP) which inquires the ATM address from the MAC address, and (b) transferring a LE ARP request with respect to a LAN emulation client (LEC) in a second ELAN to a LES in the second ELAN when a LES in a first ELAN receives the LE ARP request from a LEC in the first ELAN.

摘要翻译： 局域网（LAN）连接方法在异步传输模式（ATM）网络中运行现有的局域网应用程序来连接LANS。 LAN连接方法包括以下步骤：（a）在ATM网络中操作现有网络的LAN仿真（LANE）协议中，将主要处理来自内部访问控制（MAC）地址的地址的LAN仿真服务器（LES）连接到 通过虚拟通道连接（VCC）的仿真LAN（ELAN）中的ATM地址，用于传送从MAC地址查询ATM地址的LAN仿真地址解析协议（LE ARP），以及（b）相对于 当第一ELAN中的LES从第一ELAN中的LEC接收到LE ARP请求时，第二ELAN中的LAN仿真客户端（LEC）到第二ELAN中的LES。

公开(公告)号：US06381244B1

公开(公告)日：2002-04-30

申请号：US09042979

申请日：1998-03-17

申请人： Takashi Nishimura ,  Naohide Sekiya ,  Takeshi Kimura ,  Hideki Inoue ,  Hiroshi Nagano ,  Ikuo Taoka

发明人： Takashi Nishimura ,  Naohide Sekiya ,  Takeshi Kimura ,  Hideki Inoue ,  Hiroshi Nagano ,  Ikuo Taoka

IPC分类号： H04L1256

CPC分类号： H04L12/5601 ,  H04L2012/562 ,  H04L2012/5645

摘要： A plurality of datagram VCCs, each of which is exclusively for connectionless transfer of data, are established between mutually adjacent exchanges in advance, one of these datagram VCCs is assigned exclusively for connectionless data communication and connectionless communication is performed using this datagram VCC. Specifically, an originating terminal disassembles connectionless data into data cells, inserts a cell (a leading cell), which indicates the destination address of a terminal that is the destination of the data, at the head of the data cells and then sends the leading cell to the exchange prior to the data cells. The exchange assigns a prescribed datagram VCC for connectionless communication upon referring to the destination terminal address indicated by the leading cell and thenceforth uses this VCC to transmit data cells having line identifier identical with that of the leading cell.

摘要翻译： 预先在彼此相邻的交换机之间建立多个专用于数据无连接传输的数据报VCC，这些数据报VCC之一被专门用于无连接数据通信，并且使用该数据报VCC执行无连接通信。 具体来说，始发终端将无连接数据分解成数据单元，将数据单元的头部表示作为数据的目的地的终端的目的地地址的单元（前导单元）插入前端单元 在数据单元之前交换。 交换机在参考由前导小区指示的目的地终端地址时分配用于无连接通信的规定数据报VCC，然后使用该VCC发送具有与前导小区的行标识符相同的线路标识符的数据信元。

公开(公告)号：US06501764B1

公开(公告)日：2002-12-31

申请号：US09195048

申请日：1998-11-18

申请人： Satoshi Fudatate ,  Hiroshi Nagano ,  Minoru Yamaguchi ,  Hiroaki Hamano ,  Naohide Sekiya

发明人： Satoshi Fudatate ,  Hiroshi Nagano ,  Minoru Yamaguchi ,  Hiroaki Hamano ,  Naohide Sekiya

IPC分类号： H04L12413

CPC分类号： H04L12/4015 ,  H04L12/413

摘要： A method of transmitting a large amount of data with priority for use with a CSMA/CD system includes the steps of checking to see if a transmission line has a free space in response to a data transmission request from a node serving as a source node, transmitting, if the transmission line has a free space, a priority transmission notice carried by a data-link-layer protocol signal of the CSMA/CD system from the source node to the other nodes, transmitting data for which the data transmission request has been made from the source node to a node serving as a destination node, and putting the nodes except the source node in a transmission-disabled, reception-enabled state when the priority transmission notice is received by the nodes. Also provided is an apparatus for achieving such a method.

摘要翻译： 一种发送大量数据的优先权用于CSMA / CD系统的方法包括以下步骤：响应于来自作为源节点的节点的数据传输请求，检查传输线路是否具有可用空间， 如果传输线具有可用空间，则将由CSMA / CD系统的数据链路层协议信号承载的优先级传输通知从源节点发送到其他节点，发送数据传输请求的数据 从源节点到作为目的地节点的节点，并且当节点接收到优先发送通知时，将除了源节点之外的节点放置在发送禁止的接收使能状态中。 还提供了一种用于实现这种方法的装置。