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A message forwarding method and device

A technology of message forwarding and multicast message, which is applied in the field of network communication and can solve problems such as the inability to realize two-way multicast in Layer 2 multicast network

Active Publication Date: 2019-09-06
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention provides a message forwarding method and device to solve the problem in the prior art that the two-way multicast of the two-layer multicast network cannot be realized

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  • A message forwarding method and device
  • A message forwarding method and device

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Embodiment Construction

[0021] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, and to make the above-mentioned objectives, features, and advantages of the embodiments of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention are described below with reference to the accompanying drawings. Give further details.

[0022] See figure 1 , Is a schematic flowchart of a message forwarding method provided by an embodiment of the present invention, such as figure 1 As shown, the message forwarding method may include the following steps:

[0023] It should be noted that the execution subject of steps 101 to 102 may be a Layer 2 device (referred to as a target Layer 2 device in this article) or a processor of a target Layer 2 device with multicast VLAN enabled, such as a CPU (Center Process Unit, Central processing unit). For ease of description, the following tak...

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Abstract

The present invention provides a message forwarding method and device, the method comprising: when receiving the multicast message of the main VLAN, forwarding the multicast message of the main VLAN according to the mapping relationship between the main VLAN and multiple sub-VLANs Duplicate into multiple copies, and replace the VLAN IDs carried in the multiple multicast messages with the VLAN IDs of the corresponding sub-VLANs respectively, and replace the multiple VLAN IDs according to the corresponding multicast message forwarding entry The subsequent multicast packets are forwarded to the corresponding sub-VLANs respectively; when the multicast packets of the multiple sub-VLANs are received, the VLAN IDs carried in the multicast packets of the multiple sub-VLANs are replaced with the VLAN ID, and send the multicast packet with the VLAN ID replaced to the corresponding upstream Layer 3 device. The application of the embodiment of the present invention can realize bidirectional multicasting in the two-layer multicasting network.

Description

Technical field [0001] The present invention relates to the technical field of network communication, in particular to a method and device for message forwarding. Background technique [0002] The traditional multicast VLAN (Virtual Local Area Network, virtual local area network) forwarding model is as follows: After the multicast VLAN is configured on the Layer 2 device, the Layer 3 device only needs to send multicast data to the Layer 2 device through the multicast VLAN. Just copy, and perform traffic replication on the device that enables multicast VLAN (that is, the above-mentioned Layer 2 device configured with multicast VLAN). Between the third-tier equipment and the second-tier equipment, only one traffic is forwarded, which saves network bandwidth and reduces the burden of the third-tier equipment. [0003] The application scenario of traditional multicast VLAN is aimed at the application model of unidirectional forwarding of multicast traffic, that is, the model of forwar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/761H04L12/46H04L45/16
CPCH04L12/4641H04L45/16
Inventor 赵飞
Owner NEW H3C TECH CO LTD