Method for realizing interaction multicast in PON, system and device thereof

Abstract

The present invention discloses a method for realizing interaction multicast in PON (passive optical network), being characterized by receiving the multicast policy management entity and the multicast user information entity, wherein the multicast policy management entity comprises a dynamic access control list ACL; and the multicast user information entity and the ACL entry of the multicast policy management entity have a corresponding relationship; receiving the internet group management protocal IGMP joint message; acquiring the multicast user information carried by the IGMP joint message; looking for the multicast user information entity being matched with the multicast user information acquired from the IGMP joint message; determining uniquely and looking for the ACL entry corresponding to the multicast user information according to the corresponding relationship between the multicast user information entity and the ACL entry; and establishing a two-layer forward entry according to the uniquely determined ACL entry. Besides, the present invention also discloses a system and device for realizing interaction multicast in PON.

Description

technical field [0001] The present invention relates to passive optical network technology, in particular to a method, system and device for realizing interworking multicast in passive optical network. Background technique [0002] A passive optical network (GPON, Gigabit-Capable Passive Optical Network) includes an optical line terminal (OLT, Optical Line Terminal), an optical network terminal (ONT, Optical Network Terminal) / optical network unit (ONU, Optical Network Unit). In the early stage of GPON deployment, operators purchased OLTs and ONTs from different equipment manufacturers. Since each equipment manufacturer has formulated its own unique multicast communication protocol, normal multicast cannot be performed between OLTs and ONUs produced by different equipment manufacturers. communication. [0003] The ITU-T G984.4 and G988 standard protocols describe in detail how OLTs and ONTs produced by different equipment manufacturers in GPON perform intercommunication and ...

AI Technical Summary

Problems solved by technology

In the early stage of GPON deployment, operators purchased OLTs and ONTs from different equipment manufacturers. Since each equipment manufacturer has formulated its own unique multicast communication protocol, normal multicast cannot be performed between OLTs and ONUs produced by different equipment manufacturers. communication

[0003] The ITU-T G984.4 and G988 standard protocols describe in detail how OLTs and ONTs produced by different equipment manufacturers in GPON perform intercommunication and multicast, which solves the problem that multiple users under the same Ethernet port of the ONT can watch different MVLAN (Multicast Virtual Local Area Network (multicast virtual local area network), the problem of different multicast programs, but for the scene where multiple users under the same ONT watch the same program under multiple different MVLANs, the above standard protocol does not describe

[0004] The existing technology solves the above problem by issuing multiple layer-2 forwarding entries to a user watching a program, but this method of the prior art will cause the layer-2 forwarding entries to be used quickly in a multi-MVLAN scenario This will cause new users to be unable to watch the program. At the same time, because the MVLAN of the multicast program cannot be determined, the OLT will not be able to monitor the multicast service of the multicast user normally.

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