Topological algorithm for displaying and analyzing multicast distribution

Disclosed is a topological algorithm for displaying and analyzing multicast distribution. A client side or server side architecture is adopted, a server side is divided into a communication thread and a service thread. The communication thread is responsible for receiving neighbor information of a client side and multicast address information and establishing a public data structure, and the public data structure stores equipment information, neighbor information with ports connected and the multicast address information and establishes correlation among the equipment information, the neighbor information and the multicast address information. The service thread is responsible for drawing a topological graph and receiving user query, and a user can check multicast address of the equipment and inquire distribution of a specific multicast address in a network. A client side thread synchronously cooperates with an LLDP (link layer discovery protocol), a GMRP (general multicast registration protocol) and an IGMP