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Multicast method, device and system for software-defined network

A software-defined network and defined technology, which is applied in the branch offices providing special services, transmission systems, digital transmission systems, etc., can solve the problems of high networking costs, large numbers, and inconvenient network expansion, and achieves lower network costs and lower costs. The effect of complexity

Active Publication Date: 2019-06-21
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of using MCU to realize multi-point video conferencing system is that MCU networking requires a lot of special equipment, the networking cost is high, and network expansion is inconvenient

Method used

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  • Multicast method, device and system for software-defined network
  • Multicast method, device and system for software-defined network
  • Multicast method, device and system for software-defined network

Examples

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Embodiment Construction

[0058] refer to figure 1 , a software-defined network (Software Defined Network, SDN) multicast system according to an embodiment of the present invention, including a first conference server or an application end, an SDN device, a signaling server, a NAT server, and a second conference server or an application end, The third conference server or application end, the Nth conference server or application end. Wherein, the first conference server or application end is a multicast sending device, the second conference server or application end, the third conference server or application end, and the Nth conference server or application end are multicast receiving devices, and the multicast sending device sends The data is copied by the SDN device, and then forwarded to several multicast receiving devices.

[0059] like figure 2 As shown, the first application further includes a group management service module and a multicast routing tree management service module. The group m...

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Abstract

The invention discloses a multicast method, device and system for a software-defined network. The method includes: a multicast sending device creates a multicast group; the multicast sending device manages members of the multicast group; The multicast routing tree management service module of the network SDN controller completes the planning of the multicast routing tree, and converts the planning of the multicast routing tree into flow entry modification instructions executable by the SDN controller, so that the SDN controller executes the flow entry Modify the instruction, and instruct the SDN switch to execute the multicast task according to the modified flow entry through the southbound application programming interface API. In the embodiment of the present invention, the multicast is completed through the mutual cooperation of the multicast sending device and the SDN network, which greatly reduces the complexity of multicast configuration, and can reduce the construction cost of the network at the same time.

Description

technical field [0001] Embodiments of the present invention relate to the field of communication services, and in particular to a multicast method, device and system for a software-defined network. Background technique [0002] Multicast technology is a network technology in which a host sends a single data packet to multiple specific hosts at one time. Multicast is one of the basic communication modes of the Internet. As a point-to-multipoint communication, it is also a very effective method to save network bandwidth. [0003] A multipoint video conferencing system is a common multicast technology application scenario, and a multipoint control unit (Multipoint Control Unit, MCU) of the video conferencing system can be regarded as a special-purpose server. In a multi-party conference, each conference participant is connected to the MCU. The audio and video sending device sends its own audio and video stream to the MCU, and the MCU copies the audio and video stream and dist...

Claims

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Application Information

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IPC IPC(8): H04L12/18H04L45/16H04L45/42
CPCH04L12/185H04L45/48H04L12/00H04L12/18H04L61/5069H04L12/4641H04L43/0817H04L61/256H04L67/1046
Inventor 丘志宏李栗蔡涛
Owner HUAWEI TECH CO LTD
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