公开(公告)号：US20090031044A1

公开(公告)日：2009-01-29

申请号：US12107567

申请日：2008-04-22

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

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

IPC: G06F15/16 ,  G06F15/173

CPC classification number: H04L49/351 ,  H04L45/745 ,  H04L49/3009

Abstract: 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.

Abstract translation: 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

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

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

IPC: G01R31/08

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

Abstract: 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.

Abstract translation: 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：US08356334B2

公开(公告)日：2013-01-15

申请号：US09866259

申请日：2001-05-25

Applicant: James Ching-Shau Yik ,  Eric Lin

Inventor： James Ching-Shau Yik ,  Eric Lin

IPC: G06F7/04

CPC classification number: H04L63/10 ,  H04L49/3009 ,  H04L49/351 ,  H04L63/20 ,  H04L69/324

Abstract: 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：US07373425B2

公开(公告)日：2008-05-13

申请号：US10750445

申请日：2003-12-31

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

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

IPC: G06F15/173 ,  G06F15/16

CPC classification number: H04L49/351 ,  H04L45/745 ,  H04L49/3009

Abstract: 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.

Abstract translation: 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：US07257134B2

公开(公告)日：2007-08-14

申请号：US09969702

申请日：2001-10-03

Applicant: James Ching-Shau Yik ,  Eric Lin

Inventor： James Ching-Shau Yik ,  Eric Lin

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

CPC classification number: H04L45/02 ,  H04L49/25 ,  H04L49/3009

Abstract: 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.

Abstract translation: 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：US07835265B2

公开(公告)日：2010-11-16

申请号：US10284856

申请日：2002-10-31

Applicant: Linghsiao Wang ,  Rong-Feng Chang ,  Eric (Changhwa) Lin ,  James Ching-Shau Yik

Inventor： Linghsiao Wang ,  Rong-Feng Chang ,  Eric (Changhwa) Lin ,  James Ching-Shau Yik

IPC: G06F11/00 ,  H04L12/28

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

Abstract: 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. The node boards and the switch fabric boards routinely perform link integrity checks when operating in a normal mode such that each can independently initiate failover to working ports when a link failure is detected. Link failure is detected either by sending a link heartbeat message after the link has had no traffic for a predetermined interval, or after receiving a predetermined consecutive number of invalid packets. Once the link failure is resolved, operation resumes in normal mode.

Abstract translation: 高可用性背板架构。 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。 节点板和交换矩阵板在正常模式下运行时，会定期执行链路完整性检查，以便在检测到链路故障时，每个节点单板都能独立地启动到工作端口的故障切换。 在链路没有预定间隔的流量之后或在接收到预定的连续数量的无效分组之后，通过发送链路心跳消息来检测链路故障。 一旦链路故障解决，操作在正常模式下恢复。

公开(公告)号：US07082138B2

公开(公告)日：2006-07-25

申请号：US09966691

申请日：2001-09-28

Applicant: James Ching-Shau Yik ,  Linghsiao Wang

Inventor： James Ching-Shau Yik ,  Linghsiao Wang

IPC: A04L12/56 ,  G06F3/00 ,  G06F13/00

CPC classification number: G06F13/1605 ,  G06F13/4027

Abstract: A protocol enabling the exchange of information between data switching node components and a supervisory management processor is provided. The protocol defines a data frame format, data fields, data field values of a group of command frames. The exchange of information therebetween via the defined frames enables the production of data switching equipment having a generic implementation with a deployable, upgradeable and expandable feature set providing and enhancing support for current and future services.