Method for determining multicast designated router and multicast device

A determination method and router technology, applied in the field of data communication, can solve the problems of non-optimal forwarding path and long delay of multicast services, and achieve the effects of reducing pressure, improving stability and reducing delay.

Active Publication Date: 2018-01-19
MAIPU COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The present invention provides a method for determining a multicast designated router and a multicast device, which are used to solve the problem in the prior art that the forwarding path of multicast is not an optimal path, which causes the time delay of multicast services to increase

Method used

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  • Method for determining multicast designated router and multicast device
  • Method for determining multicast designated router and multicast device
  • Method for determining multicast designated router and multicast device

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0056] An embodiment of the present invention provides a method for determining a multicast designated router, such as figure 2 As shown, the method is applied in the first multicast device that enables the anti-loop technology, and the method includes:

[0057] Step 201. When the first multicast device determines that the device is the root node of the loop prevention technology, it records that the device is the root node.

[0058] In the embodiment of the present invention, the loop prevention technology may be a multiple spanning tree protocol MSTP, or an Ethernet protection switching protocol.

[0059] Step 202, setting the device as the designated router DR of the multicast service, and setting the device as the highest priority.

[0060] Another possible implementation of the embodiment of the present invention, as in figure 2 On the basis of the multicast designated router determination method shown, it also includes such as image 3 As shown in step 303,

[0061...

Embodiment 2

[0069] The embodiment of the present invention provides a method for determining a multicast designated router, such as Figure 5 As shown, the method is applied in the first multicast device that enables multiple instances of the loop prevention technology, and the method includes:

[0070] Step 501. When the first multicast device determines that the device is the root node of at least one loop prevention technology instance, record that the device is the root node of the at least one loop prevention technology instance. In the embodiment of the present invention, the loop prevention technology may be a multiple spanning tree protocol MSTP, or an Ethernet protection switching protocol.

[0071] Step 502: Set the device as the designated router DR for the multicast service in the at least one loop prevention technology instance, and set the DR as the device with the highest priority in the at least one loop prevention technology instance.

[0072] In the multi-instance of th...

Embodiment 3

[0079] Such as Figure 7 As shown, the embodiment of the present invention provides a multicast device 70, and the multicast device 70 includes:

[0080] The judging module 701 is configured to record that the multicast device is the root node when it is determined that the multicast device is the root node of the loop prevention technology. In the embodiment of the present invention, the loop prevention technology may be a multiple spanning tree protocol MSTP, or an Ethernet protection switching protocol.

[0081] The setting module 702 is configured to set the multicast device as the designated router DR for the multicast service according to the record of the judging module when the multicast device is the root node, and set the multicast device as the highest priority.

[0082] Another possible implementation of the embodiment of the present invention, as in Figure 7 The basis shown also includes the Figure 8 The sending module 803 is shown, and the sending module 803...

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Abstract

The invention discloses a method for determining a multicast designated router. The method is applied to a first multicast device that enables the loop prevention technology, and includes the steps ofwhen the first multicast device determines itself as a root node of the loop prevention technology, recording the device as the root node, setting the device as a designated router (DR) of the multicast service, and setting the device as the highest priority. The invention also provides a multicast device. The beneficial effects of the invention are: the DR election generated delay is reduced bysetting the root node of the loop prevention technology as the DR of the multicast service; the delay of the multicast service forwarding is also reduced; and in multiple instances of the loop prevention technology, the root node in each instance is distributed on a different network device, the load diversion for multicast services is achieved, the pressure on the network devices is reduced and the stability is improved.

Description

technical field [0001] The invention relates to the field of data communication, in particular to a method for determining a multicast designated router in a two-layer network and a multicast device. Background technique [0002] With the development of Layer 3 network switch technology, network flat design has gradually become the mainstream, and Layer 2 networks have been widely deployed and used. With the promotion of video applications, multicast is often connected to a large-scale Layer 2 network for terminals. Used with anti-loop technology. The state of the loop prevention technology will change with the change of the network, but the Designated Router (Designated Router, DR) of the multicast service cannot be changed dynamically. [0003] The currently widely used anti-loop technology is generally Multiple Spanning Tree Protocol (Multiple Spanning Tree Protocol, MSTP), and the MSTP protocol mainly introduces the concepts of instances and domains. The concept of the...

Claims

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Application Information

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IPC IPC(8): H04L12/705H04L12/761H04L45/18H04L45/16
Inventor陈可
OwnerMAIPU COMM TECH CO LTD