COMMUNICATION DEVICE, COMMUNICATION SYSTEM, AND COMMUNICATION FAULT DETECTION METHOD
    1.
    发明申请
    COMMUNICATION DEVICE, COMMUNICATION SYSTEM, AND COMMUNICATION FAULT DETECTION METHOD 审中-公开
    通信设备,通信系统和通信故障检测方法

    公开(公告)号:US20120026894A1

    公开(公告)日:2012-02-02

    申请号:US13270305

    申请日:2011-10-11

    IPC分类号: G01R31/08

    CPC分类号: H04L1/22 H04L1/24

    摘要: The communication device has a frame transfer unit that executes frame transfer via the first communication link and the second communication link, a link confirmation frame sending unit, and a return link confirmation frame monitoring unit. The link confirmation frame sending unit causes the frame transfer processing unit to send a link confirmation frame for use in confirming a normal link status via the first communication link from the communication device to the counterpart communication device. The return link confirmation frame monitoring unit performs fault detection of the first and second communication links by monitoring a return link confirmation frame which is to be returned from the counterpart communication device to the communication device via the second communication link when the counterpart communication device receives the link confirmation frame via the first communication link.

    摘要翻译: 通信装置具有经由第一通信链路和第二通信链路执行帧传送的帧传送单元,链路确认帧发送单元和返回链路确认帧监视单元。 链接确认帧发送单元使得帧传送处理单元经由第一通信链路从通信装置向对方通信装置发送用于确认正常链路状态的链路确认帧。 返回链路确认帧监视单元,当对方通信装置接收到所述第一和第二通信链路时,通过监视从对方通信装置向通信装置返回的返回链路确认帧,对第一通信链路和第二通信链路进行故障检测 链路确认帧通过第一通信链路。

    COMMUNICATION DEVICE, COMMUNICATION SYSTEM, AND COMMUNICATION FAULT DETECTION METHOD
    2.
    发明申请
    COMMUNICATION DEVICE, COMMUNICATION SYSTEM, AND COMMUNICATION FAULT DETECTION METHOD 失效
    通信设备,通信系统和通信故障检测方法

    公开(公告)号:US20090141641A1

    公开(公告)日:2009-06-04

    申请号:US12177938

    申请日:2008-07-23

    IPC分类号: G06F11/00

    CPC分类号: H04L1/22 H04L1/24

    摘要: The communication device has a frame transfer unit that executes frame transfer via the first communication link and the second communication link, a link confirmation frame sending unit, and a return link confirmation frame monitoring unit. The link confirmation frame sending unit causes the frame transfer processing unit to send a link confirmation frame for use in confirming a normal link status via the first communication link from the communication device to the counterpart communication device. The return link confirmation frame monitoring unit performs fault detection of the first and second communication links by monitoring a return link confirmation frame which is to be returned from the counterpart communication device to the communication device via the second communication link when the counterpart communication device receives the link confirmation frame via the first communication link.

    摘要翻译: 通信装置具有经由第一通信链路和第二通信链路执行帧传送的帧传送单元,链路确认帧发送单元和返回链路确认帧监视单元。 链接确认帧发送单元使得帧传送处理单元经由第一通信链路从通信装置向对方通信装置发送用于确认正常链路状态的链路确认帧。 返回链路确认帧监视单元,当对方通信装置接收到所述第一和第二通信链路时,通过监视从对方通信装置向通信装置返回的返回链路确认帧,对第一通信链路和第二通信链路进行故障检测 链路确认帧通过第一通信链路。

    Communication device, communication system, and communication fault detection method
    3.
    发明授权
    Communication device, communication system, and communication fault detection method 有权
    通信设备,通信系统和通信故障检测方法

    公开(公告)号:US08937869B2

    公开(公告)日:2015-01-20

    申请号:US13270305

    申请日:2011-10-11

    IPC分类号: H04J3/14 H04L1/22 H04L1/24

    CPC分类号: H04L1/22 H04L1/24

    摘要: The communication device has a frame transfer unit that executes frame transfer via the first communication link and the second communication link, a link confirmation frame sending unit, and a return link confirmation frame monitoring unit. The link confirmation frame sending unit causes the frame transfer processing unit to send a link confirmation frame for use in confirming a normal link status via the first communication link from the communication device to the counterpart communication device. The return link confirmation frame monitoring unit performs fault detection of the first and second communication links by monitoring a return link confirmation frame which is to be returned from the counterpart communication device to the communication device via the second communication link when the counterpart communication device receives the link confirmation frame via the first communication link.

    摘要翻译: 通信装置具有经由第一通信链路和第二通信链路执行帧传送的帧传送单元,链路确认帧发送单元和返回链路确认帧监视单元。 链接确认帧发送单元使得帧传送处理单元经由第一通信链路从通信装置向对方通信装置发送用于确认正常链路状态的链路确认帧。 返回链路确认帧监视单元,当对方通信装置接收到所述第一和第二通信链路时,通过监视从对方通信装置向通信装置返回的返回链路确认帧,对第一通信链路和第二通信链路进行故障检测 链路确认帧通过第一通信链路。

    Communication device, communication system, and communication fault detection method
    4.
    发明授权
    Communication device, communication system, and communication fault detection method 失效
    通信设备,通信系统和通信故障检测方法

    公开(公告)号:US08064353B2

    公开(公告)日:2011-11-22

    申请号:US12177938

    申请日:2008-07-23

    IPC分类号: G01R31/08

    CPC分类号: H04L1/22 H04L1/24

    摘要: The communication device has a frame transfer unit that executes frame transfer via the first communication link and the second communication link, a link confirmation frame sending unit, and a return link confirmation frame monitoring unit. The link confirmation frame sending unit causes the frame transfer processing unit to send a link confirmation frame for use in confirming a normal link status via the first communication link from the communication device to the counterpart communication device. The return link confirmation frame monitoring unit performs fault detection of the first and second communication links by monitoring a return link confirmation frame which is to be returned from the counterpart communication device to the communication device via the second communication link when the counterpart communication device receives the link confirmation frame via the first communication link.

    摘要翻译: 通信装置具有经由第一通信链路和第二通信链路执行帧传送的帧传送单元,链路确认帧发送单元和返回链路确认帧监视单元。 链接确认帧发送单元使得帧传送处理单元经由第一通信链路从通信装置向对方通信装置发送用于确认正常链路状态的链路确认帧。 返回链路确认帧监视单元,当对方通信装置接收到所述第一和第二通信链路时,通过监视从对方通信装置向通信装置返回的返回链路确认帧,对第一通信链路和第二通信链路进行故障检测 链路确认帧通过第一通信链路。

    Communication statistic information collection apparatus
    5.
    发明申请
    Communication statistic information collection apparatus 有权
    通信统计信息采集装置

    公开(公告)号:US20050276230A1

    公开(公告)日:2005-12-15

    申请号:US11049128

    申请日:2005-02-03

    IPC分类号: H04L12/70 H04L12/26 H04L12/56

    摘要: A communication statistic information collection apparatus comprises a unit for searching a flow table for a flow entry corresponding to a searching key, a unit for collecting statistics information for each of flows, a unit for generating a packet for notifying a collector apparatus of stored statistics information, a unit for updating the flow table in accordance with statistics control information shown by a statistics control entry found as a result of searching the flow table, and a unit for generating a sample packet to be transferred to the collect or apparatus at a specified sampling rate in accordance with the statistics control information shown by a specified entry found from the flow table.

    摘要翻译: 通信统计信息收集装置包括:用于搜索流表的单元,用于搜索与搜索关键字对应的流入条目;收集每个流的统计信息的单元;生成用于通知收集装置的分组的单元存储的统计信息的单元 ,用于根据由作为搜索流程表的结果找到的统计控制条目所示的统计控制信息来更新流程表的单元,以及用于产生要以特定采样传送到收集器或装置的样本分组的单元 根据从流表中找到的指定条目显示的统计控制信息的速率。

    Network repeater and network next transfer desitination searching method
    6.
    发明授权
    Network repeater and network next transfer desitination searching method 有权
    网络中继器和网络下一代转移寻找方法

    公开(公告)号:US06874033B1

    公开(公告)日:2005-03-29

    申请号:US09622484

    申请日:1998-03-23

    摘要: The present invention improves a network forwarding device, such as a router, in a computer network system. When an address to which a received packet is to be forwarded is searched for based on path information, a path search data structure is changed to the one in which, in a 2-branch tree search in which a destination address of the received packet is checked, one bit at a time beginning at a highest-order bit, p (p is an integer equal to or larger than 2) levels are combined into one 2P-branch tree to perform a search of the p levels of the 2-branch tree as a one-level search. This data structure speeds up path search processing.

    摘要翻译: 本发明改进了计算机网络系统中的诸如路由器的网络转发设备。 当基于路径信息搜索要转发接收到的分组的地址时,将路径搜索数据结构改变为在其中所接收分组的目的地地址为2的分支树搜索中的路径搜索数据结构 检查,一个位从一个最高位开始,p(p是等于或大于2的整数)的级别被组合成一个2 分支树,以执行对p 2分支树作为一级搜索。 该数据结构加速了路径搜索处理。

    Packet relaying apparatus and high speed multicast system
    7.
    发明授权
    Packet relaying apparatus and high speed multicast system 有权
    分组中继设备和高速组播系统

    公开(公告)号:US06778532B1

    公开(公告)日:2004-08-17

    申请号:US09389301

    申请日:1999-09-02

    IPC分类号: H04J110

    摘要: In a high speed multicast route searching method of searching information of a transmission port to which a received multicast packet is next transferred: a route address is formed by coupling a receiver address and a sender address in this order; one p-th power-of-2-branch tree node is configured by a collection of one two-branch tree node and two-branch tree nodes of p−1 stages totalling ((p-th power of 2)−1) nodes just under the one two-branch tree node to form a p-th power-of-2-branch tree which is stored in a memory; not one bit but consecutive p bits of the route address coupling the receiver address and sender address in a received multicast packet in this order are checked at the same time; and in accordance with the values of the consecutive bits, a search tree stored in the memory is searched. In this manner, a search process can be completed by tracing nodes (the number of bits of a search key divided by p) times at a maximum, independently from the number of entries.

    摘要翻译: 在高速多播路由搜索方法中,搜索接收到的多播分组的下一个传输的传输端口的信息:通过按照该顺序耦合接收机地址和发送方地址来形成路由地址; 一个p个2分支树状节点由一个两分支树节点和总共((p-th功率为2)-1)个节点的p-1级的两分支树节点的集合来配置 恰好在一个双分支树节点之下,以形成存储在存储器中的第p个2分支树枝; 不是一个位,而是同时检查在接收到的组播数据包中按顺序耦合接收器地址和发送方地址的路由地址的连续p位; 并且根据连续比特的值,搜索存储在存储器中的搜索树。 以这种方式,可以独立于条目的数量,通过跟踪节点(搜索关键字的比特数除以p)乘以最大值来完成搜索处理。

    Communication statistic information collection apparatus
    8.
    发明授权
    Communication statistic information collection apparatus 有权
    通信统计信息采集装置

    公开(公告)号:US07787442B2

    公开(公告)日:2010-08-31

    申请号:US11049128

    申请日:2005-02-03

    摘要: A communication statistic information collection apparatus comprises a unit for searching a flow table for a flow entry corresponding to a searching key, a unit for collecting statistics information for each of flows, a unit for generating a packet for notifying a collector apparatus of stored statistics information, a unit for updating the flow table in accordance with statistics control information shown by a statistics control entry found as a result of searching the flow table, and a unit for generating a sample packet to be transferred to the collect or apparatus at a specified sampling rate in accordance with the statistics control information shown by a specified entry found from the flow table.

    摘要翻译: 通信统计信息收集装置包括:用于搜索流表的单元,用于搜索与搜索关键字对应的流入条目;收集每个流的统计信息的单元;生成用于通知收集装置的分组的单元存储的统计信息的单元 ,用于根据由作为搜索流程表的结果找到的统计控制条目所示的统计控制信息来更新流程表的单元,以及用于产生要以特定采样传送到收集器或装置的样本分组的单元 根据从流表中找到的指定条目显示的统计控制信息的速率。

    Bandwidth monitoring device
    9.
    发明授权
    Bandwidth monitoring device 有权
    带宽监控设备

    公开(公告)号:US07397765B2

    公开(公告)日:2008-07-08

    申请号:US10769082

    申请日:2004-01-30

    IPC分类号: H04L1/00

    摘要: In one embodiment, a bandwidth monitoring device comprises a packet receiving circuit configured to receive packets; a counter configured to count a total packet length by adding up inputted packet lengths including a packet length of a next input packet and subtracting outputted packet lengths to produce a counted value; a timer configured to time a packet receiving time; a memory configured to store a number of packet receiving times and a number of counted values counted by the counter which correspond to the packet receiving times, respectively; a counter rate-of-change calculating portion configured to calculate a change rate by a first counted value corresponding to an oldest packet receiving time stored in the memory representing an oldest time at which a packet was received and a second counted value corresponding to a latest packet receiving time stored in the memory representing a latest time at which a packet was received; and a determining portion configured to decide whether the next input packet will be discarded based on a probability computed by the change rate and the counted value counted by the counter when the packet receiving circuit receives the next input packet.

    摘要翻译: 在一个实施例中,带宽监视设备包括被配置为接收分组的分组接收电路; 配置为通过将包括下一个输入分组的分组长度的输入分组长度相加并减去输出的分组长度以产生计数值来计数总分组长度; 定时器,配置为对分组接收时间进行计时; 存储器,被配置为分别存储与所述分组接收时间对应的由所述计数器计数的多个分组接收时间和多个计数值; 计数变化率计算部分,被配置为计算与存储在表示接收到分组的最旧时间的存储器中的最旧的分组接收时间相对应的第一计数值的变化率,以及对应于最新的 分组接收时间存储在存储器中,表示接收到分组的最新时间; 以及确定部分,被配置为基于当分组接收电路接收到下一个输入分组时由所述改变率计算的概率和由所述计数器计数的计数值来决定下一个输入分组是否将被丢弃。

    Packet forwarding apparatus and method for multicast packets
    10.
    发明申请
    Packet forwarding apparatus and method for multicast packets 失效
    分组转发装置和组播报文的方法

    公开(公告)号:US20070133531A1

    公开(公告)日:2007-06-14

    申请号:US11387810

    申请日:2006-03-24

    IPC分类号: H04L12/56 H04J3/26

    摘要: The present invention provides a technology for processing packets, such as VoIP packets, with priority. A priority-designating unit designates priority information based on header information. A pointer searching unit refers to a pointer table to obtain pointer information corresponding to a destination address. A sorting unit sorts the pointer information into a high-priority queue and a low-priority queue according to the priority information. A next queue holds pointer information obtained from a destination information table. A scheduler extracts and outputs the pointer information from each queue in the following order of priority: the next queue, a high-priority queue, and a low-priority queue. A destination-information-table searching unit obtains destination information and/or the pointer information from the destination information table based on the pointer information, and outputs the destination information to a packet forwarding and duplicating unit and outputs the pointer information to the next queue.

    摘要翻译: 本发明提供了优先处理诸如VoIP分组之类的分组的技术。 优先级指定单元基于头信息指定优先级信息。 指针搜索单元参考指针表来获得与目的地地址对应的指针信息。 排序单元根据优先级信息将指针信息分类为高优先级队列和低优先级队列。 下一个队列保存从目的地信息表获得的指针信息。 调度器按照以下优先级顺序从每个队列中提取并输出指针信息:下一个队列,高优先级队列和低优先级队列。 目的地信息表搜索单元基于指针信息从目的地信息表获取目的地信息和/或指针信息,并将目的地信息输出到分组转发和复制单元,并将指针信息输出到下一个队列。