Method, system and device for detecting network intercept of direct-connecting link and network equipment

A technology of direct link and detection device, applied in the network field, can solve the problems of inability to detect the existence of intermediate equipment, inability to effectively prevent packet interception, etc., achieve strong versatility and universal applicability, and prevent network interception. Effect
CN102014024AActive Publication Date: 2011-04-13RUIJIE NETWORKS CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
RUIJIE NETWORKS CO LTD
Publication Date
2011-04-13

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Abstract

The invention discloses a method, system and device for detecting network intercept of a direct-connecting link and network equipment. The method comprises the following steps: a first port of first equipment and a second port of second equipment are connected through the direct-connecting link, and the first port is controlled to trigger the link to jitter according to the set link jitter time after the first port is detected to be in a linkup state; whether the second port is subjected to link jitter is monitored; if yes, intermediate equipment does not exist between the first equipment and the second equipment; and if no, the intermediate equipment exists between the first equipment and the second equipment. By detecting whether the intermediate equipment exists or not by link jitter, the invention prevents the transmitted massages from being intercepted, and the invention is simple and convenient to realize and does not affect the massage transmitting efficiency.
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Description

technical field

[0001] The invention relates to the field of network technology, in particular to a direct link network interception detection method, system, device and network equipment. Background technique

[0002] A direct link refers to the situation where two ports on two network devices are directly connected through a link, such as figure 1 As shown, port 1 on device 1 is directly connected to port 2 on device 2 through a network cable, and packets sent from port 1 directly reach port 2 through the network cable, and vice versa.

[0003] In the above direct link, an intermediate device can be connected, such as figure 2 As shown, an intermediate device is added between device 1 and device 2. The packet sent by device 1 from port 1 enters port 3 of the intermediate device, and then sends out from port 4 of the intermediate device to port 2 of device 2. All packets transmitted between device 1 and device 2 are transferred through the intermediate device. Since the...

Claims

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