Method and device for allowing public network to support data multicast distribution tree

A technology of data group and distribution tree, applied in data exchange network, digital transmission system, electrical components, etc., can solve the problem of uncertain replacement of Data-MDT, etc.

Active Publication Date: 2014-01-01
XINHUASAN INFORMATION TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

PE3 has received two different switching requests. According to the existing protocol mechanism, PE3 cannot determine whether to replace the Data-MD

Method used

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  • Method and device for allowing public network to support data multicast distribution tree
  • Method and device for allowing public network to support data multicast distribution tree
  • Method and device for allowing public network to support data multicast distribution tree

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Embodiment Construction

[0064] In the existing SDN network architecture, the SDN controller establishes connections with all network devices, can obtain information such as the status, resources, and protocol operation of all network devices in real time, and issue control commands to control the table entries of network devices. Additions and deletions, business configuration, traffic optimization and monitoring, etc. In short, the SDN controller can maintain connection with various network devices, obtain the status of network devices in real time, and control network devices.

[0065] In order to realize the purpose of the present invention, the present invention utilizes the SDN controller to allocate Data-Groups to each PE. When the public network and the private network run bidirectional PIM, the PE initiates a Data-MDT switchover, and the SDN controller reuses the same Data-Group for different PEs with the same private network multicast group information, and selects the same Data-Group The a...

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Abstract

The invention provides a method and device for allowing a public network to support a data multicast distribution tree. The method includes the steps of building a Data-Group resource pool database which comprises Data-Group fields and relevant private network fields, judging whether private network multicast information carried by a switching request exists in the Data-Group resource pool database if the switching request launched by PE is received, if the answer is negative, allocating an unoccupied Data-Group to the PE from the Data-Group resource pool database and updating the private network multicast information carried by the switching request to the relevant private network field corresponding to the allocated Data-Group, and if the answer is yes, reusing the Data-Group corresponding to the private network multicast information carried by the switching request. According to the method and device, when two-way PIM is operated in the public network and the private network, the public network supports efficient Data-MDT by means of monitoring of an SDN controller for network equipment, and unnecessary flooding of public network multicast flow is reduced.

Description

technical field [0001] The present invention relates to the technical field of bidirectional protocol-independent multicast PIM running on both the public network and the private network, and in particular to a method and device for realizing and assisting in realizing the data multicast distribution tree supported by the public network by using a software-defined network SDN controller. Background technique [0002] Bidirectional PIM (Protocol Independent Multicast) protocol, its basic principle is: use multicast entry (*, G) for forwarding, does not distinguish the source address of the multicast flow, and can forward messages from multiple source directions multicast stream. Default-MDT (Default-Multicast Distribution Tree, shared multicast distribution tree): The MDT with Default-Group (shared group) as the group address is called Default-MDT. Default-MDT is automatically generated after the configuration is completed, and will always exist in the public network, regard...

Claims

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Application Information

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IPC IPC(8): H04L12/801H04L12/26
Inventor 游君平王锋
Owner XINHUASAN INFORMATION TECH CO LTD
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