Traffic congestion detection method and system based on BFD

The invention discloses a flow congestion detection method and a flow congestion detection system based on BFD, relating to the flow congestion detection field. The method comprises the following steps: setting a jitter threshold; calculating the jitter value of the BFD message according to the receiving interval of the BFD message; comparing the jitter value and jitter threshold of BFD packets todetermine whether the BFD link is congested or not. The invention detects the congestion of the link according to the jitter value of the BFD message, can quickly detect the flow congestion, and avoids the occurrence of a large number of packet loss. 本发明公开了种基于BFD的流量拥塞检测方法及系统，涉及流量拥塞检测领域。该方法包括以下步骤：设置抖动阈值；根据BFD报文的接收间隔，计算BFD报文的抖动值；比较BFD报文的抖动值与抖动阈值，判断BFD链路是否发生流量拥塞。本发明根据BFD报文的抖动值来检测链路发生拥塞，能够快速检测出流量拥塞，避免出现大量丢包。