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Multicast data transmission method and equipment

A technology of multicast data and transmission method, applied in the field of communication

Active Publication Date: 2013-03-20
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, receiver 2 will receive double copies of multicast data packets, and similarly, receiver 1 will also receive double copies of multicast data packets, resulting in a loop in the multicast data flow

Method used

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  • Multicast data transmission method and equipment
  • Multicast data transmission method and equipment
  • Multicast data transmission method and equipment

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Embodiment Construction

[0051] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0052] When the switching chips of network devices (such as routers and switches that transmit multicast data through switching chips) do not support bidirectional PIM, you can send (*.G) entries to the switching chips to implement bidirectional PIM. broadcast data transmission process, but at this time there will be a loop problem in the multicast data flow in the network that forms a ring shared network segment. To solve the above problems, the present invention provides a transmission method for multicast data, such as Figure 4 The network diagram of the network that forms a ring and shares a network segment is shown. exist Figure 4 Among them, each network device (in the present invention, a switch is taken as an example, and the processing method for a router is similar) includes LSW1, LSW2, LSW3 and LSW4, and LSW1, LSW2 and LSW4 are connected ...

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Abstract

The invention discloses a multicast data transmission method and multicast data transmission equipment. The method comprises that: network equipment determines the DF interfaces of the network equipment, and sets corresponding (*.G.V) table entries of the DF interfaces; and when receiving multicast data, and the network equipment forwards the multicast data through an outlet interface if a matched (*.G.V) table entry is found according to the inlet interface of the multicast data or discard the multicast data. In the invention, bidirectional protocol independent multicast (PIM) forwarding can be realized, and the problem of loop of a multicast data stream is solved.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a method and equipment for transmitting multicast data. Background technique [0002] With the development of network services, multicast services are more and more widely used on the network. As a communication method parallel to unicast and broadcast, multicast technology can effectively solve the problem of single-point transmission and multi-point reception, thereby realizing It ensures efficient data transmission from point to multipoint in the network, saves a lot of network bandwidth and reduces network load. In traditional multicast applications, there are fewer multicast sources and more multicast receivers. In this networking application, the PIM DM (PIM Dense Mode, protocol-independent Multicast intensive mode), PIM SM (PIM SparseMode, protocol-independent multicast sparse mode) and PIM SSM (PIM Source-Specific Multicast, protocol-independent multicast s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/18H04L29/06
Inventor 达呼巴雅尔
Owner NEW H3C TECH CO LTD
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