公开(公告)号：US07515546B2

公开(公告)日：2009-04-07

申请号：US10029124

申请日：2001-12-19

申请人： Moise Gaspard ,  Philip Andrew Brown ,  Andre Neil Dominic Jacob ,  Chuong Ngoc Ngo ,  Denis Proulx ,  Attaullah Zabihi ,  Afshan Zabihi-Seissan

发明人： Moise Gaspard ,  Philip Andrew Brown ,  Andre Neil Dominic Jacob ,  Chuong Ngoc Ngo ,  Denis Proulx ,  Attaullah Zabihi ,  Afshan Zabihi-Seissan

IPC分类号： H04L12/16

CPC分类号： H04L41/0213 ,  H04L41/12 ,  H04L43/50

摘要： In one embodiment, the present invention sends SNMP queries to sets and/or ranges of IP numbers to determine whether a network device exists at each IP number and whether the network device has IP forwarding capabilities. The set of IP numbers searched may be specified by specifying ranges or subnets or by providing a list of discrete IP numbers. When a new network device with IP forwarding capabilities is discovered, that network device is added to a list of discovered network devices. The list is displayed to the network manager. In one embodiment, in addition to discovering newly added devices via IP number polling, the invention also discovers newly added devices from SNMP messages (“traps”) broadcast by a newly added device. In one embodiment, each network device discovered as a result of a SNMP trap is added to the newly discovered device list.

摘要翻译： 在一个实施例中，本发明向IP号码的设置和/或范围发送SNMP查询，以确定网络设备是否存在于每个IP号码以及网络设备是否具有IP转发能力。 可以通过指定范围或子网或提供离散IP号码列表来指定搜索到的IP号码集。 当发现具有IP转发功能的新网络设备时，该网络设备被添加到已发现的网络设备的列表中。 列表将显示给网络管理员。 在一个实施例中，除了通过IP号轮询发现新添加的设备之外，本发明还从新添加的设备广播的SNMP消息（“陷阱”）中发现新添加的设备。 在一个实施例中，作为SNMP陷阱的结果发现的每个网络设备被添加到新发现的设备列表中。

公开(公告)号：US08040869B2

公开(公告)日：2011-10-18

申请号：US10029123

申请日：2001-12-19

申请人： Moise Gaspard ,  Thomas Flynn ,  Chuong Ngoc Ngo ,  Denis Proulx ,  Attaullah Zabihi

发明人： Moise Gaspard ,  Thomas Flynn ,  Chuong Ngoc Ngo ,  Denis Proulx ,  Attaullah Zabihi

IPC分类号： H04J3/24

CPC分类号： H04L45/48 ,  H04L41/0213 ,  H04L41/12 ,  H04L45/02 ,  H04L45/26

摘要： The present invention comprises a method and apparatus for automatic discovery of logical links between network devices. In one embodiment, the present invention comprises part of a network management system (“NM”) that manages a discrete set of network devices. The NM sends SNMP queries to individual network devices managed by the NM to obtain interface configuration data for each of the network interfaces of the device. The information requested includes destination information (“next hop” or “neighbor” IP address) for data packets sent from the interface. The NM checks to see whether a logical link corresponding to the received configuration information already exists in a logical link database maintained by the NM. If such a link exists the NM checks to see if the existing information for the link is valid. If the existing link data is valid, no change is made. If the existing information is not valid, or if no corresponding link is found in the link database, the NM creates a new link corresponding to the new configuration information. In one or more embodiments, the NM displays a graphical view of the discovered IP links on a graphical network map.

摘要翻译： 本发明包括一种用于自动发现网络设备之间的逻辑链路的方法和装置。 在一个实施例中，本发明包括管理离散的一组网络设备的网络管理系统（“NM”）的一部分。 NM向NM管理的各个网络设备发送SNMP查询，以获取设备的每个网络接口的接口配置数据。 所请求的信息包括从接口发送的数据包的目的地信息（“下一跳”或“邻居”IP地址）。 NM检查由NM维护的逻辑链路数据库中是否存在与接收到的配置信息相对应的逻辑链路。 如果存在这样的链接，NM会检查链接的现有信息是否有效。 如果现有的链接数据有效，则不进行任何更改。 如果现有信息无效，或链路数据库中没有找到相应的链接，则NM会创建一个与新配置信息对应的新链路。 在一个或多个实施例中，NM在图形网络图上显示所发现的IP链路的图形视图。

公开(公告)号：US07263553B2

公开(公告)日：2007-08-28

申请号：US10411263

申请日：2003-04-11

申请人： Moise Gaspard

发明人： Moise Gaspard

IPC分类号： G06F11/00

CPC分类号： H04L43/16 ,  H04L41/0213 ,  H04L41/0622 ,  H04L63/1458

摘要： Methods and apparatus for controllably suppressing, at a network management system, SNMP event trap messages received from network nodes in a communications network are presented. The rate at which the traps are received from the network nodes is monitored and if the rate exceeds a threshold all subsequent traps received over a set time interval are not processed. The rate is calculated by counting received event traps over a time interval which is either preset or programmed. After the set time interval has passed all newly received traps are monitored. Information regarding traps received during the set time interval may be logged. Additionally, nodes from which excessive traps are received and indicating an event such as a Denial of Service (DoS) attack, are identified so that remedial action can be taken.

摘要翻译： 在网络管理系统中可控制地抑制从通信网络中的网络节点接收到的SNMP事件陷阱消息的方法和装置。 监视从网络节点接收到陷阱的速率，如果速率超过阈值，则不会处理在设定的时间间隔内接收的所有后续陷阱。 通过在预设或编程的时间间隔内计数接收的事件陷阱来计算速率。 经过设定的时间间隔后，监控所有新收到的陷阱。 可以记录在设定的时间间隔期间收到的陷阱信息。 此外，识别收到过多陷阱并指示诸如拒绝服务（DoS）攻击等事件的节点，以便采取补救措施。