Method and device for transmitting multicast data

A technology of multicast data and forwarding method, which is applied in the field of communication and can solve problems such as bandwidth waste

Active Publication Date: 2010-01-20
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention is proposed in view of the problem that the multicast source in the related art needs to copy multiple data streams for transmission on the PW, resulting in a waste of bandwidth. Therefore, the present invention The main purpose is to provide a method and device for multicast data forwarding to solve at least one of the above problems

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  • Method and device for transmitting multicast data
  • Method and device for transmitting multicast data
  • Method and device for transmitting multicast data

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Embodiment Construction

[0029] Functional Overview

[0030] Considering the problem that the multicast source in the related art needs to copy multiple data streams for transmission on the PW, resulting in waste of bandwidth, the present invention provides a solution for multicast data forwarding. The processing principles of the solution are as follows: After the join request, determine the multicast VSI corresponding to the user information according to the user information carried in the join request; determine the information of all users requesting to join managed by the multicast VSI according to the forwarding table, and determine the The information forwards the multicast data from the multicast VSI to all users who request to join managed by the multicast VSI, wherein the forwarding table is used to record the correspondence between the multicast VSI and the information of all users who request to join. Through the embodiment of the invention, the bandwidth of the network can be saved and th...

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Abstract

The invention discloses a method and a device for transmitting multicast method, wherein the method comprises the following steps: determining a multicast virtual switching instance (VSI) corresponding to user information according to the user information carried in joint requests after receiving the joint requests sent by a user; determining user information of all joint requests managed by the multicast VSI according to a transmission list, and transmitting the multicast data from the multicast VSI to all users required to joint according to the information of the users required to joint, wherein the transmission list is used for recording a corresponding relation of the multicast VSI and the information of all users required to joint. The invention achieves the purposes of saving network bandwidth and reducing the quantity of protocol messages.

Description

technical field [0001] The present invention relates to the communication field, in particular to a multicast data forwarding method and device. Background technique [0002] Internet Group Management Protocol (Internet Group Management Protocol, referred to as IGMP) snooping (Snooping) is used to listen to the IGMP message transmitted between the host and the router, analyze the information it carries, and establish and maintain the multicast address table on the second layer , and then the multicast packets sent from the router are forwarded according to the multicast address table. Without IGMPSnooping, multicast packets will be broadcast at Layer 2. After IGMP Snooping is implemented, multicast packets will no longer be broadcast at Layer 2, but will be multicast at Layer 2. [0003] Virtual Private Lan Service (VPLS for short) is a layer-2 virtual private network (Virtual Private Network, VPN) that utilizes Multi-Protocol Label Switching (MPLS for short) technology to ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L12/56H04L12/18
CPCH04L12/185H04L45/00
Inventor 王怀滨宋刚赵艳华
Owner ZTE CORP
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