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Message forwarding method and message forwarding apparatus

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: 2017-01-04
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

Method used

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  • Message forwarding method and message forwarding apparatus
  • Message forwarding method and message forwarding apparatus

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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 purposes, features and advantages of the embodiments of the present invention more obvious and understandable, the following describes the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings For further detailed explanation.

[0022] See figure 1 , is a schematic flowchart of a message forwarding method provided by an embodiment of the present invention, as shown in 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 can be a Layer 2 device (referred to as the target Layer 2 device herein) or a processor of the target Layer 2 device, such as a CPU (Center Process Unit, central processing unit). For ease of description, the execution subject of ...

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Abstract

The invention provides a message forwarding method and a message forwarding apparatus. The method comprises the following steps: when a multicast message of a main VLAN is received, creating multiple duplicates of the multicast message of the main VLAN according to the mapping relation between the main VLAN and multiple sub VLANs, replacing VLAN IDs carried in the multiple duplicates of the multicast message with VLAN IDs of the corresponding sub VLANs, andrespectively forwarding the multiple duplicates of the multicast message with replaced VLAN IDs to the corresponding sub VLAN IDs according to the corresponding multicast message entry type; when the multiple sub VLAN multicast messages are received, replacing the VLAN IDs carried in the multiple sub VLAN multicast messages with the corresponding VLAN IDs of the main VLAN; and transmitting the multicast messages with replaced VLAN IDs to corresponding three layers of upstream devices. By the application of the embodiments of the invention, bidirectional multicast of two layers of multicast networks can be realized.

Description

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

Claims

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Application Information

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