OVERLAY NETWORK BASED MULTICAST AND BROADCAST METHOD AND SYSTEM

摘要

Disclosed are an overlay network based multicast and broadcast method and system, the method comprising: dividing an overlay network system into domains and sub-domains, and configuring the domains and sub-domains to which each node in the overlay network system belongs; and setting a target overlay network address format in a message according to the configured domains and sub-domains; a message transmitter encapsulates a to-be-transmitted message according to the preset target overlay network address format, and conducts message routing over the overlay network; and an SN in the overlay network receives the message, and forwards the message according to the target overlay network address in the message and the information of the domain and sub-domain to which the SN belongs. The present invention realizes message multicast and broadcast in an overlay network.