A multicast group management method and system based on separation of forwarding and control

Abstract

The present invention provides a multicast group management method based on the separation of forwarding and control, which includes: sending a first network group management protocol message carrying the information that the multicast member is about to go online to perform the online operation of the multicast member; After the online operation, send the second network group management protocol message to query the multicast members in real time to perform the query operation of the multicast members; judge whether the multicast members need to go offline according to the user's needs, and if so, send the multicast member to be offline soon The third network group management protocol message of the message is used to perform the offline operation of the multicast member; if not, the query operation is performed when the multicast member does not enter the offline mode. The present invention introduces SDN technology to separate multicast group control and multicast data replication, so that multicast group control is concentrated on the multicast control unit logic device, and OLT and ONU devices are only used as multicast data forwarding; multicast data forwarding And control functions are separated from hardware devices to avoid complex configuration caused by differences between different devices.

Description

technical field [0001] The invention belongs to the technical field of optical fiber communication, and relates to a multicast group management method and system, in particular to a multicast group management method and system based on separation of forwarding and control. Background technique [0002] PON (Passive optical network) network system consists of OLT (Optical Line Terminal, optical line terminal), ONU (Optical Network Unit, optical network unit) on the user side and ODN (Optical distribution network, optical distribution network). point network structure. ODN is composed of passive optical components such as single-mode optical fibers, optical splitters, and optical connectors, and provides optical transmission media for the physical connection between OLT and ONU. see figure 1 , is shown as a schematic diagram of a typical PON system reference model. [0003] SDN is a new type of network architecture, which separates the control plane of the network from the ...

AI Technical Summary

Problems solved by technology

[0010] First, the multicast group control protocol is distributed on different hardware devices of the PON network. When the multicast service changes or the protocol is updated, the software of the OLT and ONU equipment needs to be upgraded, which affects the use of user services;

[0011] Second, the multicast data forwarding and control functions are coupled with hardware devices, the scalability of multicast services is poor, and the differences between different devices lead to complex configurations;

[0012] Therefore, how to provide a multicast group management method and system based on the separation of forwarding and control to solve the problem in the prior art when the multicast service changes or the protocol is updated because the multicast group control protocol is distributed on different hardware devices of the PON network. , both the OLT and ONU equipment software need to be upgraded, which affects the use of user services; due to the coupling of multicast data forwarding and control functions with hardware equipment, the scalability of multicast services is poor, and the differences between different equipment lead to complex configuration, which makes it impossible to solve the problem of a large number of equipment scattered in the network. Various defects such as independent operation and management have become technical problems urgently to be solved by practitioners in this field

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