公开(公告)号：US20090031044A1

公开(公告)日：2009-01-29

申请号：US12107567

申请日：2008-04-22

申请人： Craig Barrack ,  James Ching-Shau Yik ,  Rong-Feng Chang ,  Eric Lin

发明人： Craig Barrack ,  James Ching-Shau Yik ,  Rong-Feng Chang ,  Eric Lin

IPC分类号： G06F15/16 ,  G06F15/173

CPC分类号： H04L49/351 ,  H04L45/745 ,  H04L49/3009

摘要： Disclosed is an apparatus and method for storing and searching computer node addresses in a computer network system. In one embodiment, the apparatus comprises a frame forwarding device such as a switch. The switch includes two MAC address tables including a primary MAC address table and secondary MAC address table both for storing and searching MAC addresses. The primary table stores records that contain compressed values of MAC addresses. The records are contained in storage locations that are referenced using the compressed value of the MAC address as a search index. In order to account for searching collisions that may result from different MAC addresses compressing to the same value, each record in the primary address table is linked to a chain of records in the secondary table. The records in the secondary table store the full value of the MAC address. Each chain of records in the secondary address table contains MAC addresses the present invention.

摘要翻译： 公开了一种用于在计算机网络系统中存储和搜索计算机节点地址的装置和方法。 在一个实施例中，该装置包括诸如开关的帧转发装置。 交换机包括两个MAC地址表，包括主MAC地址表和辅MAC地址表，用于存储和搜索MAC地址。 主表存储包含MAC地址压缩值的记录。 记录包含在使用MAC地址的压缩值作为搜索索引引用的存储位置。 为了解决可能由不同MAC地址压缩到相同值的搜索冲突，主地址表中的每个记录链接到辅助表中的记录链。 辅助表中的记录存储MAC地址的全部值。 辅助地址表中的每个记录链包含本发明的MAC地址。

公开(公告)号：US07373425B2

公开(公告)日：2008-05-13

申请号：US10750445

申请日：2003-12-31

申请人： Craig Barrack ,  James Ching-Shau Yik ,  Rong-Feng Chang ,  Eric Lin

发明人： Craig Barrack ,  James Ching-Shau Yik ,  Rong-Feng Chang ,  Eric Lin

IPC分类号： G06F15/173 ,  G06F15/16

CPC分类号： H04L49/351 ,  H04L45/745 ,  H04L49/3009

摘要： Disclosed is an apparatus and method for storing and searching computer node addresses in a computer network system. In one embodiment, the apparatus comprises a frame forwarding device such as a switch. The switch includes two MAC address tables including a primary MAC address table and secondary MAC address table both for storing and searching MAC addresses. The primary table stores records that contain compressed values of MAC addresses. The records are contained in storage locations that are referenced using the compressed value of the MAC address as a search index. In order to account for searching collisions that may result from different MAC addresses compressing to the same value, each record in the primary address table is linked to a chain of records in the secondary table. The records in the secondary table store the full value of the MAC address. Each chain of records in the secondary address table contains MAC addresses the present invention.

摘要翻译： 公开了一种用于在计算机网络系统中存储和搜索计算机节点地址的装置和方法。 在一个实施例中，该装置包括诸如开关的帧转发装置。 交换机包括两个MAC地址表，包括主MAC地址表和辅MAC地址表，用于存储和搜索MAC地址。 主表存储包含MAC地址压缩值的记录。 记录包含在使用MAC地址的压缩值作为搜索索引引用的存储位置。 为了解决可能由不同MAC地址压缩到相同值的搜索冲突，主地址表中的每个记录链接到辅助表中的记录链。 辅助表中的记录存储MAC地址的全部值。 辅助地址表中的每个记录链包含本发明的MAC地址。

公开(公告)号：US07260066B2

公开(公告)日：2007-08-21

申请号：US10326352

申请日：2002-12-20

申请人： Linghsiao Wang ,  Rong-Feng Chang ,  Eric Lin ,  James Ching-Shau Yik

发明人： Linghsiao Wang ,  Rong-Feng Chang ,  Eric Lin ,  James Ching-Shau Yik

IPC分类号： G01R31/08

CPC分类号： H04L41/0663 ,  H04L41/0677 ,  H04L43/0811 ,  H04L43/10 ,  H04L43/103 ,  H04L49/1523 ,  H04L49/351 ,  H04L49/552 ,  H04L69/40

摘要： A method for actively detecting link failures on a high availability backplane architecture. The backplane system includes redundant node boards operatively communicating with redundant switch fabric boards. Uplink ports of the node boards are logically grouped into trunk ports at one end of the communication link with the switch fabric boards. A probe packet is sent, and a probing timer is set whenever either a specified number of bad packets are received, or an idle timer expires. If a response to the probe packet is received before the probe timer expires then the link is deemed valid, otherwise the link is presumed to have failed. Preferably, either the node boards or the switch fabric boards are configured to properly handle a probe pack, which preferably has identical source and destination addresses.

摘要翻译： 一种在高可用性背板架构上主动检测链路故障的方法。 背板系统包括与冗余交换矩阵板操作地通信的冗余节点板。 节点板的上行端口在与交换矩阵板的通信链路的一端在逻辑上分组成中继端口。 发送探测分组，每当接收到指定数量的不良分组，或者空闲定时器到期时，都会设置探测定时器。 如果在探测定时器到期之前接收到对探测分组的响应，则该链路被认为有效，否则链路被认为是失败的。 优选地，节点板或交换矩阵板被配置为适当地处理优选具有相同的源和目的地址的探针包。

公开(公告)号：US20060002386A1

公开(公告)日：2006-01-05

申请号：US10881226

申请日：2004-06-30

申请人： James Yik ,  Rong-Feng Chang ,  Eric Lin ,  John Ta ,  Craig Barrack

发明人： James Yik ,  Rong-Feng Chang ,  Eric Lin ,  John Ta ,  Craig Barrack

IPC分类号： H04L12/56

CPC分类号： H04L49/3063 ,  H04L49/201 ,  H04L49/602

摘要： A packet switching node having a pipelined packet processing architecture processing packets received via an input port associated with the packet switching node is presented. The method performed by the apparatus includes: determining a packet frame type of the packet received; selectively extracting packet header field values specific to a packet frame type, the extracted packet header field value including packet addressing information; ascribing to the packet a preliminary action to be performed in respect of the packet; searching packet switching information tracked by the packet switching node based on extracted packet addressing information; formulating a preliminary switch response for the packet; classifying the packet into one of a plurality of packet flows; modifying the preliminary switch response in accordance with one of the preliminary action, the packet flow into which the packet was classified, and a default port action corresponding to the input port; modifying the packet header in accordance with one of the preliminary action, the packet flow, and the default port action; and processing the packet in accordance with the switch response. Advantages are derived from: pipelined processing of packets which enables short-cutting the rest of the processing for improper packets; a flexible frame type determination which is fast for well know frame types yet flexible in support of new frame types delaying obsolescence of a particular implementation; an early determination of a processing action which is successively refined by subsequent stages; a combined Layer-2 and Layer-3 network addressing search engine operating on short bit length indexed Layer-2 and Layer-3 network addresses reducing network address table storage requirements, requiring a reduced data transfer bandwidth for network address table access, a large external hashed primary network address table, and a small internal secondary network address table; an early determination of a switch response; and packet-classification-based switch response and packet header modification.

公开(公告)号：US20060002292A1

公开(公告)日：2006-01-05

申请号：US10903437

申请日：2004-07-30

申请人： Rong-Feng Chang ,  Eric Lin ,  Craig Barrack

发明人： Rong-Feng Chang ,  Eric Lin ,  Craig Barrack

IPC分类号： H04L1/00

CPC分类号： H04L12/462 ,  H04L43/10 ,  H04L45/02 ,  H04L45/22 ,  H04L45/28

摘要： A hardware-based failover scheme enabling rapid end-to-end recovery is provided. Hardware logic periodically generates, transmits, receives, and processes heartbeat packets, sent from one end of the communications network to another, and then returned back. If a communications network node or communications link failure is being experienced along the transport path, then the hardware logic rapidly swaps the affected traffic conveyed to a pre-established backup transport path, typically within microseconds. Advantages are derived from the rapid failover effected end-to-end which enables continued delivery of provisioned communications services improving the resiliency and/or availability of a communications network.

摘要翻译： 提供了基于硬件的故障转移方案，实现快速的端到端恢复。 硬件逻辑周期性地生成，发送，接收和处理从通信网络的一端发送到另一端的心跳信息包，然后返回。 如果沿着传输路径遇到通信网络节点或通信链路故障，则硬件逻辑快速地将传送到预先建立的备份传输路径的受影响的业务交换，通常在微秒内。 优点来源于端对端的快速故障转移，从而能够持续提供所提供的通信服务，从而提高通信网络的弹性和/或可用性。

公开(公告)号：US07813263B2

公开(公告)日：2010-10-12

申请号：US10903437

申请日：2004-07-30

申请人： Rong-Feng Chang ,  Eric Lin ,  Craig Barrack

发明人： Rong-Feng Chang ,  Eric Lin ,  Craig Barrack

IPC分类号： G01R31/08 ,  G06F11/00

CPC分类号： H04L12/462 ,  H04L43/10 ,  H04L45/02 ,  H04L45/22 ,  H04L45/28

摘要： A hardware-based failover scheme enabling rapid end-to-end recovery is provided. Hardware logic periodically generates, transmits, receives, and processes heartbeat packets, sent from one end of the communications network to another, and then returned back. If a communications network node or communications link failure is being experienced along the transport path, then the hardware logic rapidly swaps the affected traffic conveyed to a pre-established backup transport path, typically within microseconds. Advantages are derived from the rapid failover effected end-to-end which enables continued delivery of provisioned communications services improving the resiliency and/or availability of a communications network.

摘要翻译： 提供了基于硬件的故障转移方案，实现快速的端到端恢复。 硬件逻辑周期性地生成，发送，接收和处理从通信网络的一端发送到另一端的心跳信息包，然后返回。 如果沿着传输路径遇到通信网络节点或通信链路故障，则硬件逻辑快速地将传送到预先建立的备份传输路径的受影响的业务交换，通常在微秒内。 优点来源于端对端的快速故障转移，从而能够持续提供所提供的通信服务，从而提高通信网络的弹性和/或可用性。

公开(公告)号：US07760719B2

公开(公告)日：2010-07-20

申请号：US10881226

申请日：2004-06-30

申请人： James Yik ,  Rong-Feng Chang ,  Eric Lin ,  John Ta ,  Craig Barrack

发明人： James Yik ,  Rong-Feng Chang ,  Eric Lin ,  John Ta ,  Craig Barrack

IPC分类号： H04L12/28

CPC分类号： H04L49/3063 ,  H04L49/201 ,  H04L49/602

摘要： A packet switching node in a pipelined architecture processing packets received via an input port associated with the packet switching node performs a method, which includes: determining a packet frame type; selectively extracting packet header field values specific to a packet frame type, including packet addressing information; ascribing to the packet a preliminary action to be performed; searching packet switching information tracked by the packet switching node based on extracted packet addressing information; formulating a preliminary switch response for the packet; classifying the packet into a packet flow; modifying the preliminary switch response in accordance with one of the preliminary action, the packet flow into which the packet was classified, and a default port action corresponding to the input port; modifying the packet header in accordance with one of the preliminary action, the packet flow, and the default port action; and processing the packet.

摘要翻译： 处理经由与分组交换节点相关联的输入端口接收的分组的流水线架构中的分组交换节点执行一种方法，其包括：确定分组帧类型; 选择性地提取特定于分组帧类型的分组报头字段值，包括分组寻址信息; 归因于要执行的初步动作; 基于提取的分组寻址信息来搜索由分组交换节点跟踪的分组交换信息; 制定分组的初步切换响应; 将分组分组成分组流; 根据预备动作，数据包被分类到的分组流中的一个以及与输入端口对应的默认端口动作来修改初始切换响应; 根据预备动作，分组流和默认端口动作之一修改分组报头; 并处理数据包。

公开(公告)号：US08356334B2

公开(公告)日：2013-01-15

申请号：US09866259

申请日：2001-05-25

申请人： James Ching-Shau Yik ,  Eric Lin

发明人： James Ching-Shau Yik ,  Eric Lin

IPC分类号： G06F7/04

CPC分类号： H04L63/10 ,  H04L49/3009 ,  H04L49/351 ,  H04L63/20 ,  H04L69/324

摘要： An apparatus and methods for securely forwarding data packets at a data switching node in a data transport network is provided. The data switching node maintains a switching database of switching entries. Each switching entry has a modification protection feature preventing its modification when activated. Dynamic topology discovery of data network nodes can be disabled via topology discovery control flags associated with individual physical communications ports of the data switching node. Unknown destination flood data traffic is not replicated to physical communications ports having topology discovery disabled or specifying the suppression of replication of such unknown destination data traffic thereto. The advantages are derived from a data switching node being enabled to operate concurrently in friendly and hostile environments while detecting, preventing and reporting incidences of hostile MAC ADDR attacks.

公开(公告)号：US07257134B2

公开(公告)日：2007-08-14

申请号：US09969702

申请日：2001-10-03

申请人： James Ching-Shau Yik ,  Eric Lin

发明人： James Ching-Shau Yik ,  Eric Lin

IPC分类号： H04J3/06 ,  H04L12/66 ,  H04L12/56 ,  G06F15/173

CPC分类号： H04L45/02 ,  H04L49/25 ,  H04L49/3009

摘要： A method of synchronizing the information held in a switching database associated with a switching function of a data switching node, with a data network node identifier record associated with a management processor enabling a managed mode thereof is provided. An entry of the switching database is modified. A status specifier corresponding to the modified entry is set to signify the modification thereof. An inspection of the switching database is initiated on the expiration of an adjustable timer, and the information held in modified switching database entries is synchronized with the data network node identifier record. This method of synchronization of the information held in the switching database spreads out of burst changes thereof over time. The advantages are derived from the use of a more economical management processor while providing the same or enhanced levels of service of the data switching node.

摘要翻译： 提供一种将与数据交换节点的切换功能相关联的交换数据库中保存的信息与与启用管理模式的管理处理器相关联的数据网络节点标识符记录同步的方法。 交换数据库的条目被修改。 对应于修改的条目的状态说明符被设置为表示其修改。 切换数据库的检查在可调计时器的到期时启动，并且保存在修改的交换数据库条目中的信息与数据网络节点标识符记录同步。 保持在切换数据库中的信息的这种同步方法随着时间的推移而突破其突发变化。 优点来源于使用更经济的管理处理器，同时提供数据交换节点的相同或增强的服务级别。

公开(公告)号：US08636426B2

公开(公告)日：2014-01-28

申请号：US13180435

申请日：2011-07-11

申请人： Eric Lin ,  Jim Zhao ,  Jia-Hau Liu

发明人： Eric Lin ,  Jim Zhao ,  Jia-Hau Liu

IPC分类号： G02B6/36

CPC分类号： G02B6/4201

摘要： An optical coupling device includes a substrate loaded with a first optical module and IC drivers, and a second optical module intending to couple with the first optical module. The substrate defines an electrical connection port at one end thereof, the first optical module is located at another end of the substrate. The second optical module includes a first insulating holder and fiber cores embedded in the insulating holder. The first optical module includes a second insulating holders and VCSELS and PDS embedded with the second insulating holder, the fiber cores are directly coupled with VCSELS and PDS to transmit light lines therein.

摘要翻译： 光耦合装置包括装载有第一光学模块和IC驱动器的基板，以及用于与第一光学模块耦合的第二光学模块。 衬底在其一端限定电连接端口，第一光学模块位于衬底的另一端。 第二光学模块包括第一绝缘支架和嵌入绝缘支架的纤芯。 第一光学模块包括第二绝缘保持器和嵌入第二绝缘保持器的VCSELS和PDS，光纤芯与VCSELS和PDS直接耦合以在其中透射光线。