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Multi-cast method and multi-cast network system

A multicast group address and multicast technology, applied in the field of communication, can solve problems such as wasting bandwidth and affecting user services, and achieve the effects of reducing workload, good compatibility, and improving network bandwidth utilization

Active Publication Date: 2012-02-08
RAISECOM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Not only wastes bandwidth, but also may affect user business

Method used

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  • Multi-cast method and multi-cast network system

Examples

Experimental program
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Embodiment 1

[0038] Embodiment 1, a multicast method, comprising:

[0039] The multicast router requests multicast data from the multicast source according to the received multicast protocol message, and sends the received multicast data to the first switch; the first switch is the one closest to the user terminal in the multicast network system switch;

[0040] The first switch converts the multicast data from the multicast VLAN to one or more user VLANs, and sends the data to user terminals in the user VLANs.

[0041] The "closest to the user terminal" in this embodiment does not refer to the physical distance, but refers to the minimum number of devices passed through when transmitting data between the user terminal and the multicast network system; for example figure 1In the shown multicast network system, switch A is the first switch, and switches B and C are intermediate switches; according to the method of this embodiment, switch A converts the multicast data into user VLANs 5 and ...

Embodiment 2

[0065] Embodiment 2, a multicast network system, comprising:

[0066] One or more switches, including at least a first switch closest to the user terminal;

[0067] A multicast router, configured to request multicast data from a multicast source according to the received multicast protocol message, and send the received multicast data to the first switch;

[0068] The first switch is used to convert the multicast data from the multicast VLAN to one or more user VLANs, and send the data to user terminals in the user VLANs.

[0069] "The closest to the user terminal" in this embodiment does not refer to the physical distance, but refers to the least number of devices passed through when transmitting data between the multicast network system and the user terminal.

[0070] In this embodiment, the replication point of the multicast data is fully moved down, and the multicast data is replicated on the switch closest to the user, so that network bandwidth resources can be saved, an...

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Abstract

The invention discloses a multi-cast method and a multi-cast network system. The method comprises the following steps that a multi-cast router requests multi-cast data from a multi-cast source according to a received multi-cast protocol message and sends the received multi-cast data to a first switchboard; the first switchboard is a switchboard which is closest to a user terminal in the multi-cast network system; and the first switchboard converts the multi-cast data from a multi-cast VLAN (Virtual Local Area Network) to one or a plurality of user VLANs and sends the multi-cast data to the user terminal in the user VLANs. With the invention, the network bandwidth utilization rate during multi-cast can be improved.

Description

technical field [0001] The invention relates to the communication field, in particular to a multicast method and a multicast network system. Background technique [0002] Multicast refers to the realization of a point-to-multipoint network connection between the sender and each receiver. If a sender transmits the same data to multiple receivers at the same time, it only needs to send one copy of the same data packet. It improves data transfer efficiency and reduces the possibility of backbone network congestion. [0003] With the development of broadband, the growing demand for multimedia-related services has stimulated the popularization and development of IP multicast technology, which has become an indispensable key technology for the new generation of networks. [0004] The current multicast implementation mechanism is: the multicast routing protocol running on the multicast router is responsible for forwarding the multicast data to the terminal multicast router connec...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L12/18H04L12/46
Inventor 袁宝安
Owner RAISECOM TECH
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