公开(公告)号：US06212191B1

公开(公告)日：2001-04-03

申请号：US09017308

申请日：1998-01-30

Applicant: Cedell A. Alexander ,  Matthew B. Squire

Inventor： Cedell A. Alexander ,  Matthew B. Squire

IPC: G01R3108

CPC classification number: H04L63/104 ,  H04L12/4608 ,  H04L2012/5617 ,  H04L2012/563 ,  H04L2012/5687 ,  H04Q11/0478

Abstract: A method for providing a security mechanism to an Asynchronous Transfer Mode (ATM) emulated local-area network (LAN) is disclosed. The ATM emulated LAN is served by a LAN Emulation Server (LES), a Broadcast and Unknown Server (BUS), and a LAN Emulation Configuration Server (LECS). After receiving a LE_JOIN_REQUEST from an LE client within the emulated LAN, the LES forms a LE_CONFIGURE_REQUEST on behalf of the LE client, by utilizing the information from the LE_JOIN_REQUEST. The LES then sends the LE_CONFIGURE_REQUEST to the LECS. In turn, the LECS sends back a LE_CONFIGURE_RESPONSE to the LES. After receiving the LE_CONFIGURE_RESPONSE from the LECS, a determination is made as to whether or not a status field within the LE_CONFIGURE_RESPONSE indicates a success and a target ATM address field within the LE_CONFIGURE_RESPONSE contains an ATM address of the LES. If both of the above-mentioned conditions are met, the LES then sends a LE_JOIN_RESPONSE with a success status back to the requesting LE client such that the requesting LE client is allowed to join the emulated LAN.

Abstract translation: 公开了一种用于向异步传输模式（ATM）模拟的局域网（LAN）提供安全机制的方法。 ATM模拟LAN由LAN仿真服务器（LES），广播和未知服务器（BUS）和LAN仿真配置服务器（LECS）提供。 在模拟LAN内的LE客户端收到LE_JOIN_REQUEST后，LES通过利用LE_JOIN_REQUEST中的信息代表LE客户端形成LE_CONFIGURE_REQUEST。 LES然后将LE_CONFIGURE_REQUEST发送到LECS。 反过来，LECS将LE_CONFIGURE_RESPONSE发送回LES。 在从LECS接收到LE_CONFIGURE_RESPONSE之后，确定LE_CONFIGURE_RESPONSE中的状态字段是否指示成功，并且LE_CONFIGURE_RESPONSE内的目标ATM地址字段包含LES的ATM地址。 如果满足上述两个条件，则LES然后将具有成功状态的LE_JOIN_RESPONSE发送回请求的LE客户端，使得允许请求的LE客户端加入仿真的LAN。

公开(公告)号：US06198747B1

公开(公告)日：2001-03-06

申请号：US09016736

申请日：1998-01-30

Applicant: Brian N. Bingham ,  Jackie Jackson, Jr. ,  Rosemary V. Slager ,  Deepak Vig ,  Charles A. Carriker ,  Cedell A. Alexander ,  John Kevin Frick ,  Edward J. Rovner ,  Matthew B. Squire

Inventor： Brian N. Bingham ,  Jackie Jackson, Jr. ,  Rosemary V. Slager ,  Deepak Vig ,  Charles A. Carriker ,  Cedell A. Alexander ,  John Kevin Frick ,  Edward J. Rovner ,  Matthew B. Squire

IPC: H04L1228

CPC classification number: H04L12/1886 ,  H04L12/4608

Abstract: Provided are a method and system for use within at least one network wherein broadcast occurs. The method and system achieve their objects as follows. In response to reception of a data frame with at least one destination indicator ordinarily requiring broadcast to a first defined group of stations, at least one attribute of the received data frame is examined. In response to the step of examining, the received data frame is transmitted to a defined second group of stations, smaller in number than the first group of stations.

Abstract translation: 提供了一种用于在发生广播的至少一个网络内使用的方法和系统。 方法和系统实现其对象如下。 响应于具有通常要求广播到第一定义的站组的至少一个目的地指示符的数据帧的接收，检查所接收的数据帧的至少一个属性。 响应于检查步骤，接收的数据帧被发送到定义的第二组站，数量小于第一组站。

公开(公告)号：US07142509B1

公开(公告)日：2006-11-28

申请号：US09951169

申请日：2001-09-12

Applicant: Edward Joel Rovner ,  Lance Richardson ,  Cedell A. Alexander

Inventor： Edward Joel Rovner ,  Lance Richardson ,  Cedell A. Alexander

IPC: H04L1/00

CPC classification number: H04L29/06027 ,  H04L1/18 ,  H04L65/4076 ,  H04L65/605

Abstract: A network switch receives a data packet, recognizes the data packet as belonging to a given stream, and directs the data packet to a stream processing module in the network switch in response to recognizing the stream to which the packet belongs. The stream processing module further recognizes the source of the stream from which the packet was transmitted, and stores the data packet in a buffer for later transmission, as controlled by the stream processing module, to a destination for the stream. In this way, the stream may be replicated and transmitted by the stream processing module any number of times to multiple destinations in an efficient, cost-effective manner.

Abstract translation: 网络交换机接收数据分组，将数据分组识别为属于给定流，并响应于识别分组所属的流而将数据分组引导到网络交换机中的流处理模块。 流处理模块进一步识别从其发送分组的流的源，并将该数据分组存储在缓冲器中以便随后由流处理模块控制传输到流的目的地。 以这种方式，流可以由流处理模块以有效的，成本有效的方式任意次数复制和发送到多个目的地。

公开(公告)号：US20070177512A1

公开(公告)日：2007-08-02

申请号：US11670873

申请日：2007-02-02

Applicant: Cedell A. Alexander

Inventor： Cedell A. Alexander

IPC: H04J3/14 ,  H04L12/28

CPC classification number: H04L45/742 ,  H04L45/12 ,  H04L45/122 ,  H04L45/46

Abstract: The solution to the shortest path between a source node and multiple destination nodes is accelerated using a grouping of nodes, where the nodes are grouped based on distance from the source node, and a corresponding set of memory locations that indicate when a group includes one or more nodes. The memory locations can be quickly searched to determine the group that represents the shortest distance from the source node and that includes one or more nodes. Nodes may be grouped into additional groupings that do not correspond to the set of memory locations, when the distance from the source node to the nodes exceeds the range of memory locations. Advantageously, the disclosed system and method provide the ability to reach asymptotically optimal performance.

Abstract translation: 使用一组节点来加速在源节点和多个目的地节点之间的最短路径的解决方案，其中根据与源节点的距离对节点进行分组，以及相应的一组存储器位置，其指示组何时包括一个或 更多的节点。 可以快速搜索存储器位置以确定代表距离源节点的最短距离并且包括一个或多个节点的组。 当从源节点到节点的距离超过存储器位置的范围时，节点可以被分组成不对应于该组存储器位置的附加分组。 有利地，所公开的系统和方法提供达到渐近最佳性能的能力。

公开(公告)号：US06956816B1

公开(公告)日：2005-10-18

申请号：US09784841

申请日：2001-02-15

Applicant: Cedell A. Alexander ,  Donald B. Grosser

Inventor： Cedell A. Alexander ,  Donald B. Grosser

IPC: H04J1/16 ,  H04J3/08 ,  H04J3/14 ,  H04L12/56 ,  H04Q11/04

CPC classification number: H04J3/14 ,  H04J3/08 ,  H04J2203/006 ,  H04J2203/0083 ,  H04L45/22 ,  H04L45/28 ,  H04L45/58 ,  H04L45/586

Abstract: A working router is coupled to a SONET add-drop multiplexor (ADM) through a working line and a protection router is coupled to the ADM through a protection line. The routers are coupled to each other by a separate side-band connection and comprise a virtual router from the perspective of the neighboring router, which communicates with the virtual router over the SONET network using the Point-to-Point Protocol (PPP). The protection router transmits a heartbeat message to the working router over the side-band connection. If the protection router does not receive a response thereto, it initiates a line switch within the add-drop multiplexor. Once the line switch is complete, the protection router exchanges datagrams with the neighboring router, via the ADM and SONET ring to which the ADM is coupled. The protection router establishes a PPP connection between itself and the neighboring router device coupled to the SONET ring, utilizing the Link Control Protocol (LCP). The protection router includes a predetermined identifier value that identifies the originator of the request, in the LCP Identifier field of LCP request datagrams. The neighboring router includes the Identifier value received in a request datagram in the corresponding response datagram transmitted over the SONET ring to the ADM. Because datagrams received by the ADM from the SONET link are transmitted over both the working and the protect lines, the working router receives the same response as the protection router. Thus, by examining the identifier field, and recognizing the identifier value as that assigned to the protection router, the working router determines that the line switch to the protection router has occurred.

Abstract translation: 工作路由器通过工作线耦合到SONET分插复用器（ADM），保护路由器通过保护线耦合到ADM。 路由器通过单独的边带连接彼此耦合，并且包括从相邻路由器的视角的虚拟路由器，其通过使用点对点协议（PPP）通过SONET网络与虚拟路由器进行通信。 保护路由器通过侧带连接向工作路由器发送心跳消息。 如果保护路由器没有收到响应，则它启动分插复用器内的线路交换机。 一旦线路交换机完成，保护路由器将通过与ADM耦合的ADM和SONET环路与相邻路由器交换数据报。 保护路由器利用链路控制协议（LCP）在其自身与耦合到SONET环的相邻路由器设备之间建立PPP连接。 在LCP请求数据报的LCP标识符字段中，保护路由器包括标识请求的发起者的预定标识符值。 相邻路由器包括在通过SONET环传送到ADM的对应响应数据报中的请求数据报中接收的标识符值。 由于ADM从SONET链路接收到的数据报是通过工作线路和保护线路传输的，所以工作路由器收到与保护路由器相同的响应。 因此，通过检查标识符字段，并识别标识符值作为分配给保护路由器的标识符值，工作路由器确定已经发生到保护路由器的线路交换机。

公开(公告)号：US06226297B1

公开(公告)日：2001-05-01

申请号：US09017306

申请日：1998-01-30

Applicant: Cedell A. Alexander ,  J. Kevin Frick ,  Edward J. Rovner ,  Matthew B. Squire

Inventor： Cedell A. Alexander ,  J. Kevin Frick ,  Edward J. Rovner ,  Matthew B. Squire

IPC: G01R3108

CPC classification number: H04L45/00 ,  H04L45/22

Abstract: A method for providing redundancy to an Asynchronous Transfer Mode (ATM) emulated local-area network (LAN) is disclosed. The ATM emulated LAN is served by a primary LAN Emulation Server, a Broadcast and Unknown Server (LES/BUS), and a LAN Emulation Configuration Server (LECS). A backup LES/BUS is coupled to the ATM emulated LAN. A logical redundancy virtual channel connection (VCC) is then established between the primary LES/BUS and the backup LES/BUS. When the redundancy VCC is present between the primary LES/BUS and the backup LES/BUS, the backup LES/BUS is placed in a dormant mode. However, when the redundancy VCC is absence between the primary LES/BUS and the backup LES/BUS, the backup LES/BUS is activated to serve any request generated by the ATM emulated LAN.

Abstract translation: 公开了一种用于向异步传输模式（ATM）仿真局域网（LAN）提供冗余的方法。 ATM仿真LAN由主要LAN仿真服务器，广播和未知服务器（LES / BUS）和LAN仿真配置服务器（LECS）提供。 备用LES / BUS耦合到ATM模拟LAN。 然后在主LES / BUS和备用LES / BUS之间建立逻辑冗余虚拟通道连接（VCC）。 当主LES / BUS和备用LES / BUS之间存在冗余VCC时，备用LES / BUS处于休眠模式。 然而，当主LES / BUS和备用LES / BUS之间的冗余VCC不存在时，备份LES / BUS被激活以服务由ATM仿真LAN产生的任何请求。