发明名称 |
Layer 2 loop detection system |
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.
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申请公布号 |
US2005220036(A1) |
申请公布日期 |
2005.10.06 |
申请号 |
US20040955961 |
申请日期 |
2004.09.30 |
申请人 |
SUGITANI KIICHI;MUTOH RYOUICHI;NISHI TETSUYA |
发明人 |
SUGITANI KIICHI;MUTOH RYOUICHI;NISHI TETSUYA |
分类号 |
H04L12/24;H04L12/26;H04L12/56;(IPC1-7):H04L12/26 |
主分类号 |
H04L12/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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