公开(公告)号：US20100039943A1

公开(公告)日：2010-02-18

申请号：US12447075

申请日：2006-12-06

申请人： Jeong-Dong Ryoo ,  Kyung-Mook Lim ,  Tae-sik Cheung ,  Yoo-Kyoung Lee

发明人： Jeong-Dong Ryoo ,  Kyung-Mook Lim ,  Tae-sik Cheung ,  Yoo-Kyoung Lee

IPC分类号： H04J3/14 ,  G06F11/00

CPC分类号： H04L12/18 ,  H04L43/0835

摘要： An apparatus and method for measuring frame loss in multicast service traffic are provided. The method of measuring frame loss includes: counting the number of data frames of a predetermined multicast service flowing into an object network of frame loss measurement; counting the number of data frames of the predetermined multicast service flowing out of the network; and measuring frame loss by comparing the counted number of incoming frames and the counted number of outgoing frames. According to the method and apparatus, in a multicast service environment which is dynamically changing, frame loss of a predetermined multicast service can be conveniently and easily measured.

摘要翻译： 提供了一种用于测量组播业务流量帧丢失的装置和方法。 测量帧丢失的方法包括：对流入对象网络的预定多播服务的帧丢失测量的数据帧数进行计数; 对流出网络的预定多播服务的数据帧数进行计数; 并通过比较输入帧的计数和计数的出帧数来测量帧丢失。 根据该方法和装置，在动态变化的组播业务环境中，可以容易地测量预定组播业务的帧丢失。

公开(公告)号：US20090254676A1

公开(公告)日：2009-10-08

申请号：US12096758

申请日：2006-12-06

申请人： Seong-Soon Joo ,  Young-Sik Chung ,  Tae-Joon Park ,  Jin-Young Lee ,  Yoo-Kyoung Lee ,  Hae-Won Jung ,  Young-Cheol Bang ,  Moon-Sung Kim ,  Kang-Yong Lee ,  Kyung-Mook Lim

发明人： Seong-Soon Joo ,  Young-Sik Chung ,  Tae-Joon Park ,  Jin-Young Lee ,  Yoo-Kyoung Lee ,  Hae-Won Jung ,  Young-Cheol Bang ,  Moon-Sung Kim ,  Kang-Yong Lee ,  Kyung-Mook Lim

IPC分类号： G06F15/16

CPC分类号： H04L12/4625

摘要： A method for transferring data frame end-to-end in a local area network is provided. In the method, a virtual synch frame shaper is loaded on a frame transmission layer structure provided in end stations in transmitting and receiving sides, which transmits data frame passing through a plurality of Ethernet switches in the LAN. Then, slot counters, which are counted through the virtual synch frame shaper, are exchanged between the end stations, and the slot counters are synchronized. Afterward, the transmit time slot is allocated based on the synchronized slot counters for transmitting data frames between the end stations. Finally, data frames are transmitted based on the synchronized slot counters and the allocated transmit time slot.

摘要翻译： 提供了一种在局域网中端到端传送数据帧的方法。 在该方法中，虚拟同步帧整形器被加载在发送和接收侧的终端站中提供的帧传输层结构上，发送和接收侧发送通过LAN中的多个以太网交换机的数据帧。 然后，通过虚拟同步帧整形器计数的时隙计数器在终端站之间交换，并且时隙计数器被同步。 之后，基于用于在终端站之间发送数据帧的同步时隙计数器分配发送时隙。 最后，基于同步的时隙计数器和分配的发送时隙来发送数据帧。

公开(公告)号：US07873041B2

公开(公告)日：2011-01-18

申请号：US11947353

申请日：2007-11-29

申请人： Won-Kyoung Lee ,  Jae-Woo Park ,  Young-Sik Chung ,  Yoo-Kyoung Lee

发明人： Won-Kyoung Lee ,  Jae-Woo Park ,  Young-Sik Chung ,  Yoo-Kyoung Lee

IPC分类号： H04L12/28 ,  H04L12/56

CPC分类号： G06F17/30949 ,  H04L12/66

摘要： A method and apparatus for searching a forwarding table are provided. The apparatus includes: a data storage unit storing a forwarding table including a plurality of forwarding entries aligned in the order of MAC address values and stored in each group after being classified into a plurality of groups and a plurality of forwarding databases having hash keys corresponding to the groups and; a hashing unit transforming an externally input MAC address into a hash key and selecting a search group and a search-forwarding entry by respectively using some bits and the other bits of the hash key; and a port information output unit outputting output port information of the search-forwarding entry, when the input MAC address is the same as a MAC address extracted from the search-forwarding entry and outputting output port information after searching and acquiring a forwarding entry having the input MAC address while dividing a search area in the search group, when the input MAC address is different from the extracted MAC address. Accordingly, it is possible to speedily search a forwarding table.

摘要翻译： 提供了一种用于搜索转发表的方法和装置。 该装置包括：数据存储单元，存储转发表，该转发表包括按照MAC地址值的顺序排列的多个转发条目，并且在被分类为多个组之后存储在每个组中，并且多个转发数据库具有对应于 团体和 散列单元将外部输入的MAC地址变换为散列密钥，并分别使用所述散列密钥的一些比特和其他比特来选择搜索组和搜索转发条目; 以及端口信息输出单元，当输入的MAC地址与从搜索转发表项提取的MAC地址相同时输出搜索转发表项的输出端口信息，并且在搜索并获取具有 当输入MAC地址与提取的MAC地址不同时，输入MAC地址，同时分割搜索组中的搜索区域。 因此，可以快速搜索转发表。

公开(公告)号：US20080267074A1

公开(公告)日：2008-10-30

申请号：US12023767

申请日：2008-01-31

申请人： Jee Yon Choi ,  Yoo-Kyoung Lee

发明人： Jee Yon Choi ,  Yoo-Kyoung Lee

IPC分类号： G01R31/08

CPC分类号： H04L49/9078 ,  H04L49/205 ,  H04L49/254 ,  H04L49/30 ,  H04L49/3045 ,  H04L49/90

摘要： Provided is a method of setting a QoS packet flow and processing a QoS packet for providing a QoS service. In the method of setting a QoS packet flow in the packet switching system, whether there are VOQs that are not pre-allocated is determined in response to a QoS packet flow setting request. If there are no VOQs that are not pre-allocated, it is determined whether there are VOQs that have not been used for a predetermined period. If there are VOQs that have not been used for the predetermined period, one of the VOQs is selected. Thereafter, an inactive state of a flow using the selected VOQ is indicated and QoS parameters set for the flow are released. Therefore, metro Ethernet services such as E-LINE and E-LAN can be provided in an Ethernet network and custom QoS services such as Diff Serv and ACL can be provided in an IP network. Also, limited resources can be efficiently used and thus costs can be reduced.

摘要翻译： 提供了一种设置QoS分组流并处理用于提供QoS服务的QoS分组的方法。 在分组交换系统中设置QoS分组流的方法中，是否响应于QoS分组流设置请求来确定是否存在未预分配的VOQ。 如果没有没有预分配的VOQ，则确定是否存在在预定时间段内尚未使用的VOQ。 如果在预定时间段内没有使用VOQ，则选择一个VOQ。 此后，指示使用所选择的VOQ的流的不活动状态，并且释放为流设置的QoS参数。 因此，可以在以太网中提供诸如E-LINE和E-LAN​​的城域以太网业务，并且可以在IP网络中提供诸如Diff Serv和ACL之类的定制QoS服务。 此外，可以有效地使用有限的资源，因此可以降低成本。

公开(公告)号：US5926102A

公开(公告)日：1999-07-20

申请号：US891494

申请日：1997-07-11

申请人： Kyung-Gyu Chun ,  Yoo-Kyoung Lee

发明人： Kyung-Gyu Chun ,  Yoo-Kyoung Lee

IPC分类号： H04B7/155 ,  H04J3/14 ,  H04L1/22 ,  H04L29/14 ,  H04Q11/04 ,  H04L1/00

CPC分类号： H04J3/14 ,  H04L1/22 ,  H04L69/40 ,  H04J2203/006 ,  Y10S379/905

摘要： A method for controlling bidirectional line protection switching by using a remote defect indication signal. The method includes the following steps of: inserting and transmitting a remote defect indication signal through the opposite directional link, in case the receiving end of working line detects a defect while a traffic is transmitted via a bidirectional link, and then switching to a back-up line by controlling the selector of the receiving station; and switching to the protection line by controlling the selector of the transmitting station, in case the remote defect indication signal is detected via the opposite directional link.

摘要翻译： 一种通过使用远程缺陷指示信号来控制双向线路保护切换的方法。 该方法包括以下步骤：通过相对的定向链路插入和发送远程缺陷指示信号，在工作线路的接收端通过双向链路传输业务时检测到缺陷，然后切换到后端， 控制接收站的选择器; 并且在通过相对的定向链路检测到远程缺陷指示信号的情况下，通过控制发送站的选择器来切换到保护线路。