A multicast service guiding method and network device

Abstract

The invention discloses a multicast business draining method and network equipment, which comprises the following steps: a) setting the drained multicast group in the network equipment; b) reporting the drained multicast group from network equipment to the upper grade network equipment at network side; providing the multicast business data based on the report through upper grade network equipment; c) receiving the multicast business data through the network equipment. The invention realizes rapid drainage of specific multicast, which overcomes the waste problem of broad band under static condition.

Description

technical field [0001] The invention relates to a communication network, in particular to a multicast service diversion method in the communication network and network equipment thereof. Background technique [0002] In the communication network using the Ethernet technology, the multicast service is increasingly becoming a common public service. [0003] Figure 1 is a schematic diagram of a typical IP multicast architecture. A multicast routing protocol is used between the local multicast router and the remote multicast router, which can be DVMRP (Distance Vector Multicast Routing Protocol), PIM-DM (protocol irrelevant multicast-intensive mode), etc., the multicast routing protocol forms a multicast routing forwarding table according to the interface topology that joins the multicast group; a group membership protocol is used between the terminal host-local multicast router, such as IPV4 The typical IGMP (Internet Group Management Protocol) protocol in the environment, the...

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Problems solved by technology

Therefore, when the user is the first user to request the video service on the DSLAM, there may be a large delay from sending the multicast service request to the delivery of the corresponding multicast service data flow, which affects the user experience

[0005] With the transformation of access network "fiber into copper out", future access network equipment is likely to be small and medium-sized and closer to users. A network access device usually only has dozens of subscriber lines. A user is more likely to be the first user of a program channel (multicast group) on the network access device. To improve user experience, it is a simple method to statically deliver the multicast stream directly to the edge network access device However, when developing IPTV services on a large scale, as the number of channels increases, the static delivery of multicast streams will occupy a large amount of bandwidth, even exceeding the uplink bandwidth of small node devices. Therefore, from the perspective of bandwidth, static delivery is unrealistic ; Even if some multicast streams are delivered statically, it is difficult to satisfy the preferences of different user groups to a certain extent

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