公开(公告)号：US07496055B2

公开(公告)日：2009-02-24

申请号：US10955961

申请日：2004-09-30

申请人： Kiichi Sugitani ,  Ryouichi Mutoh ,  Tetsuya Nishi

发明人： Kiichi Sugitani ,  Ryouichi Mutoh ,  Tetsuya Nishi

IPC分类号： H04L12/28

CPC分类号： H04L41/06 ,  H04L12/462 ,  H04L41/0213 ,  H04L41/046 ,  H04L41/12 ,  H04L43/10 ,  H04L45/00 ,  H04L45/18

摘要： A layer 2 loop detection apparatus includes a unit recognizing a topology of an L2 network at normal time by collecting MIB information including information concerning ports of a plurality of L2 switches from the plurality of L2 switches through SNMP communication; a unit discriminating, based on a topology recognition processing, a blocking port for traffic blocking and a disable port under a port disable state each set under a Spanning Tree Protocol (STP); a unit setting each of the blocking port and the disable port as a monitoring point and periodically monitoring a state thereof; and a unit performing detection of an L2 loop by re-collecting a part of the MIB information from the plurality of L2 switches through SNMP communication and re-recognizing the topology of the L2 network, the detection of the L2 loop detection being triggered by a change of a state of one of the blocking port and the disable port.

摘要翻译： 层2环路检测装置包括通过SNMP通信收集包括与多个L2交换机的端口有关的信息的MIB信息，正常时识别L2网络拓扑的单元; 基于拓扑识别处理，根据生成树协议（STP）在每个端口禁用状态下识别用于流量阻塞的阻塞端口和禁用端口的单元; 将阻塞端口和禁用端口中的每一个设置为监视点并周期性地监视其状态的单元; 以及通过从多个L2交换机通过SNMP通信重新收集一部分MIB信息并重新识别L2网络的拓扑来执行L2环路检测的单元，由L2的网络触发的L2环路检测的检测 更改阻塞端口和禁用端口之一的状态。

公开(公告)号：US20050220036A1

公开(公告)日：2005-10-06

申请号：US10955961

申请日：2004-09-30

申请人： Kiichi Sugitani ,  Ryouichi Mutoh ,  Tetsuya Nishi

发明人： Kiichi Sugitani ,  Ryouichi Mutoh ,  Tetsuya Nishi

IPC分类号： H04L12/24 ,  H04L12/26 ,  H04L12/44

CPC分类号： H04L41/06 ,  H04L12/462 ,  H04L41/0213 ,  H04L41/046 ,  H04L41/12 ,  H04L43/10 ,  H04L45/00 ,  H04L45/18

摘要： A layer 2 loop detection apparatus includes a unit recognizing a topology of an L2 network at normal time by collecting MIB information including information concerning ports of a plurality of L2 switches from the plurality of L2 switches through SNMP communication; a unit discriminating, based on a topology recognition processing, a blocking port for traffic blocking and a disable port under a port disable state each set under a Spanning Tree Protocol (STP); a unit setting each of the blocking port and the disable port as a monitoring point and periodically monitoring a state thereof; and a unit performing detection of an L2 loop by re-collecting a part of the MIB information from the plurality of L2 switches through SNMP communication and re-recognizing the topology of the L2 network, the detection of the L2 loop detection being triggered by a change of a state of one of the blocking port and the disable port.

摘要翻译： 层2环路检测装置包括通过SNMP通信收集包括与多个L2交换机的端口有关的信息的MIB信息，正常时识别L2网络拓扑的单元; 基于拓扑识别处理，根据生成树协议（STP）在每个端口禁用状态下识别用于流量阻塞的阻塞端口和禁用端口的单元; 将阻塞端口和禁用端口中的每一个设置为监视点并周期性地监视其状态的单元; 以及通过从多个L2交换机通过SNMP通信重新收集一部分MIB信息并重新识别L2网络的拓扑来执行L2环路检测的单元，由L2的网络触发的L2环路检测的检测 更改阻塞端口和禁用端口之一的状态。