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1. 发明授权

US06279037B1 Methods and apparatus for collecting, storing, processing and using network traffic data 有权
标题翻译：收集，存储，处理和使用网络流量数据的方法和装置
公开(公告)号：US06279037B1
公开(公告)日：2001-08-21
申请号：US09131717
申请日：1998-08-10
申请人： Jonathan Tams , Mark Adrian Pearce , Robin Iddon , Ronnie Brown
发明人： Jonathan Tams , Mark Adrian Pearce , Robin Iddon , Ronnie Brown
IPC分类号： G06F15173
CPC分类号： H04L43/12 , H04L43/026 , H04L43/106
摘要： Methods and apparatus for collecting, storing, processing and using data, such a RMON2 network traffic data, are described. Network traffic probes are identified and attempts are made to configure the identified probes to generate network traffic data sets which are as close to a preselected common data format as possible. Application layer traffic data is collected in addition to network layer traffic data when possible. In an RMON2 embodiment, the common data format includes the use of delta count values as opposed to absolute count values. The common data format of the present invention utilizes terminal count mode format as opposed to all count mode format for the presentation of RMON2 application layer information. To minimize the amount of data processing required to put a probe's network traffic data into the desired common format and to maximize the amount of information collected, network data is obtained from a probe using one of the available RMON2 table formats. In order to avoid various problems with known data aging processes used to limit the growth of network traffic databases, a database of collected network traffic information which includes multiple parallel sets of data stored at different resolutions is created and maintained. The data sets for each individual resolution are stored in a separate FIFO data structure and with the oldest data records in the FIFO being overwritten when allocated data space becomes fully utilized.
摘要翻译：描述了用于收集，存储，处理和使用数据的方法和装置，例如RMON2网络业务数据。识别网络流量探测器，并尝试配置所识别的探测器以生成尽可能接近预选公共数据格式的网络流量数据集。除了网络层流量数据之外，应用层流量数据也可能被收集。在RMON2实施例中，公共数据格式包括与绝对计数值相反的增量计数值的使用。本发明的公共数据格式使用终端计数模式格式，而不是用于呈现RMON2应用层信息的所有计数模式格式。为了最小化将探测器的网络流量数据放入所需的通用格式并最大限度地收集信息所需的数据处理量，使用可用的RMON2表格格式之一从探测器获取网络数据。为了避免用于限制网络流量数据库增长的已知数据老化过程的各种问题，创建并维护了收集的网络流量信息的数据库，其包含以不同分辨率存储的多个并行数据。每个单独分辨率的数据集存储在单独的FIFO数据结构中，并且当分配的数据空间被充分利用时，FIFO中的最早的数据记录被覆盖。

2. 发明申请

US20060200793A1 Synchronization scheme 有权
公开(公告)号：US20060200793A1
公开(公告)日：2006-09-07
申请号：US11364018
申请日：2006-02-27
申请人： Mark Duffy , Ephraim Ezekiel , Robin Iddon , Eric Schott , Aruna Thirumalai , Chris Cook
发明人： Mark Duffy , Ephraim Ezekiel , Robin Iddon , Eric Schott , Aruna Thirumalai , Chris Cook
IPC分类号： G06F9/44
CPC分类号： G06F1/12
摘要： A synchronization scheme is provided that includes querying a managed device to obtain an initial device state, synchronizing the device state in a plurality of management processes, detecting a change in the initial device state, and maintaining a synchronized current device state between the managed device and the plurality of management processes.

3. 发明授权

US06233613B1 High impedance probe for monitoring fast ethernet LAN links 失效
标题翻译：用于监控快速以太网LAN链路的高阻探头
公开(公告)号：US06233613B1
公开(公告)日：2001-05-15
申请号：US08914294
申请日：1997-08-18
申请人： Douglas Walker , Robin Iddon
发明人： Douglas Walker , Robin Iddon
IPC分类号： G06F1300
CPC分类号： H04L25/0266 , H04L1/24
摘要： A high impedance tap for monitoring traffic over a communication link of a fast Ethernet local area network (LAN). The circuit of the present invention is advantageously used for tapping into a fast Ethernet communication link (e.g., bi-directional communication channel) of a LAN using, for instance, {fraction (10/100)} BaseT Ethernet communication protocol. The novel circuit is particularly useful in point to point communication links (e.g., supporting fast Ethernet communication) where two communication nodes are coupled together using a bi-directional communication link (e.g., two twisted pair cables). Unlike the prior art monitoring probes, the probe of the present invention does not insert itself in series between the communication link, but rather taps onto the communication link in parallel using a high impedance termination circuit thereby leaving the existing communication link undisturbed electrically. By leaving the communication link undisturbed electrically, the probe of the present invention does not introduce latency into the communication link nor does it interrupt the communication link for any reason (e.g., during auto-negotiation sessions or on power down, power interruption, etc.). The high impedance value selected for the present invention is approximately one order of magnitude greater than the individual termination impedance of the communication nodes. The particular termination circuit used can employ a parallel coupled resistor with optional capacitors coupled to each wire of a twisted pair cable. The probe can be attached to a number of different statistics gathering systems (e.g., of the RMOD and RMOD2 standard) or various types of traffic accounting systems.
摘要翻译：用于监控快速以太网局域网（LAN）通信链路上的流量的高阻抗抽头。本发明的电路有利地用于使用例如{fraction（10/100）} BaseT以太网通信协议来窃听LAN的快速以太网通信链路（例如，双向通信信道）。该新颖的电路在使用双向通信链路（例如，双绞线电缆）将两个通信节点耦合在一起的点对点通信链路（例如，支持快速以太网通信）中特别有用。与现有技术的监测探头不同，本发明的探针不会将其自身插入到通信链路之间，而是使用高阻抗终端电路并联连接到通信链路上，从而使现有的通信链路不受电扰动。通过使通信链路不受干扰地进行，本发明的探测器不会将延迟引入到通信链路中，也不会由于任何原因（例如在自动协商会话期间或掉电，断电等）中断通信链路。）。为本发明选择的高阻抗值大约比通信节点的各个终端阻抗大一个数量级。所使用的特定终端电路可以采用并联耦合电阻器，其中可选的电容器耦合到双绞线电缆的每根导线。探测器可以连接到许多不同的统计信息收集系统（例如，RMOD和RMOD2标准）或各种类型的流量计费系统。

4. 发明授权

US08015268B2 Methods, systems, and computer readable media for synchronizing device state 有权
标题翻译：用于同步设备状态的方法，系统和计算机可读介质
公开(公告)号：US08015268B2
公开(公告)日：2011-09-06
申请号：US11364018
申请日：2006-02-27
申请人： Mark Duffy , Ephraim Ezekiel , Robin Iddon , Eric Schott , Aruna Thirumalai , Chris Cook
发明人： Mark Duffy , Ephraim Ezekiel , Robin Iddon , Eric Schott , Aruna Thirumalai , Chris Cook
IPC分类号： G06F15/177
CPC分类号： G06F1/12
摘要： A synchronization scheme is provided that includes querying a managed device to obtain an initial device state, synchronizing the device state in a plurality of management processes, detecting a change in the initial device state, and maintaining a synchronized current device state between the managed device and the plurality of management processes.
摘要翻译：提供了一种同步方案，其包括查询被管理设备以获得初始设备状态，在多个管理过程中同步设备状态，检测初始设备状态的变化，以及保持被管理设备与被管理设备之间的同步当前设备状态多个管理流程。

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