| 摘要 |
The present invention discloses a multicast realization method and a network device. The method includes: a first network device receives an Internet Group Management Protocol (IGMP) message from a terminal, wherein the IGMP message includes a multicast group information requested by the terminal; a multicast backup information is obtained, and the multicast backup information includes the information of the port through which the IGMP message is received, the information of the terminal and the multicast group information; the multicast backup information is sent to a second network device so as to enable the second network device to forward a multicast stream to the terminal according to the multicast backup information when the first network device fails. By adopting the technical solution provided by embodiments of the present invention, the problems of the interruption of Internet Protocol Television (IPTV) service caused by the failure of a master router or a master link and bad user experience in the art are solved. |
