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Forwarding method and forwarding device of multicast data message

A technology for multicasting data and messages, applied in the field of communications, can solve problems such as reducing data transmission efficiency, increasing router load pressure, and wasting network bandwidth, and achieves the effect of improving data transmission efficiency, reducing load pressure, and saving network bandwidth.

Active Publication Date: 2016-09-14
HANGZHOU DPTECH TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the router sends data to the downstream switch, because it needs to transmit multiple copies of the same data, the network bandwidth is wasted, the data transmission efficiency is reduced, and the load pressure on the router is increased.

Method used

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  • Forwarding method and forwarding device of multicast data message
  • Forwarding method and forwarding device of multicast data message
  • Forwarding method and forwarding device of multicast data message

Examples

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Embodiment Construction

[0023] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.

[0024] The terminology used in the present invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used herein and in the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term "and / or" as use...

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Abstract

The invention provides a forwarding method and a forwarding device of a multicast data message. The method is applied to a switch supporting the Internet Group Management Protocol IGMP Snooping, and comprises the following steps of: when the multicast data message from a router is received, judging whether a destination MAC address of the multicast data message is matched from a preset layer 2 forwarding table; if so, acquiring the destination MAC address of the multicast data message and an index value of a table item of a multicast VLAN from the layer 2 forwarding table; judging whether the index value of the table item of the destination MAC address of the multicast data message in the layer 2 forwarding table is matched from a preset layer 3 forwarding table; if so, based on the table item corresponding to the index value matched from the layer 3 forwarding table, forwarding the multicast data message. By application of the embodiment of the invention, layer 2 forwarding and layer 3 forwarding are combined together for forwarding the multicast data message, network bandwidth is saved, data transmission efficiency is improved, and load pressure of the router is reduced.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method and device for forwarding multicast data messages. Background technique [0002] Multicast refers to sending data to a certain set of nodes (that is, a multicast group) in the form of best-effort delivery in an IP (Internet Protocol, a protocol for interconnecting networks). The basic idea is: the source host ( That is, the multicast source) only sends one copy of data, and its destination address is the multicast group address; all receivers in the multicast group can receive the same copied data, and only the hosts in the multicast group can receive the data. Other hosts cannot receive it. [0003] In the related technology, when any multicast source sends the same data to multiple hosts in different VLANs (Virtual Local Area Network, virtual local area network), the router that is arranged between the multicast source and the multiple hosts is receiving After ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/761H04L12/46H04L45/16
CPCH04L12/4641H04L49/201
Inventor 刘晓贺
Owner HANGZHOU DPTECH TECH
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