LOSSY LINK DETECTION METHOD, APPARATUS, NODE AND SYSTEM

摘要

Disclosed are a lossy link detection method, an apparatus, a node and a system, belonging to the field of Internet Protocol Television (IPTV). The method comprises: receiving statistical data reported by all nodes every preset number of packets carrying the program clock reference value, wherein all the nodes start to collect statistical data from a unified program clock reference; acquiring the number of packets lost between an upstream node and a downstream node among all the nodes according to the statistical data; and identifying the lossy link according to the packets lost between the upstream node and the downstream node. The lossy link detection apparatus provided in the embodiments of the present invention acquires the statistical data collected at a uniform reference time by different nodes, and determines the number of packets lost between the upstream node and the downstream mode by comparison to identify the lossy link, thus the IPTV service provider is able to quickly and accurately pinpoint network faults.