发明名称 |
COMMUNICATIONS NETWORK TAP WITH HEARTBEAT MONITOR |
摘要 |
A communications network tap, comprises a first terminal and a second terminal adapted to couple the tap in-line in the network and communicate data packets with network devices. A heartbeat generator is configured to generate a heartbeat signal, and a heartbeat insert circuit coupled to the first terminal and the heartbeat generator and configured to insert the heartbeat signal into data packets. A third terminal is coupled to the heartbeat insert circuit and adapted to couple the tap to a network monitor and communicate data packets with network monitor. A heartbeat remove circuit is coupled to the third terminal and configured to receive data packets from a network monitor and remove the heartbeat signal from the data packets. A heartbeat detector coupled to the heartbeat remove circuit and configured to detect whether the data packets include the heartbeat signal, and if not, to generate an alarm signal. A switch is coupled to the second terminal and configured to transmit data packets onto the network. Advantages of the invention include ensuring the integrity of network monitoring equipment. |
申请公布号 |
EP1902545(A1) |
申请公布日期 |
2008.03.26 |
申请号 |
EP20060785879 |
申请日期 |
2006.06.29 |
申请人 |
NET OPTICS, INC. |
发明人 |
MATITYAHU, ELDAD;SHAW, ROBERT, E.;STRONG, STEPHEN, H. |
分类号 |
H04L12/26;H04L12/24 |
主分类号 |
H04L12/26 |
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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