Loop detection method and system based on tolerance mechanism

Abstract

The invention provides a loop detection method and a loop detection system based on a tolerance mechanism. The loop detection method comprises the following steps of: sending a detection message to the outside according to a period t to detect whether a loop exists in a network; If the detection message is received, it is judged that the loop exists, the received detection message is counted, andthe tolerance time is counted. When the loop duration is longer than the preset tolerance time, the loop damage measures are taken. When the loop duration is less than or equal to the preset tolerancetime, the loop damage measures are not taken. The invention adopts breaking measures to protect the network environment by introducing a ring-tolerant mechanism for long-time loops. For short-term loops, no breakage measures is taken to prevent business disruption and maintain smooth operation.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a loop detection method and system based on a tolerance mechanism. Background technique [0002] Loop detection is a technology that detects whether there is a link layer loop in the network and takes special actions when a loop is found. [0003] The existing loop detection scheme is: the switch port with loop detection enabled periodically sends a loop detection message (broadcast or multicast message), if there is a loop in the network connected to the port, or the port itself is On a loop, the switch will receive the detection message sent by itself, thereby judging that there is a loop. The existence of the loop will waste bandwidth, waste network resources and even cause network paralysis. Generally, after a loop is detected, the switch takes measures such as closing ports and blocking ports to destroy the loop. [0004] The sensitivity of loop detection in ...

AI Technical Summary

Problems solved by technology

In some practical application scenarios, there may be some intermittent, short-duration loops, which may have little impact on the actual business

Under the existing loop detection mechanism, after the loop is detected, the port will be closed frequently to break the loop, which may cause frequent business interruption and have a great impact

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