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

Abstract

The present invention disclose a method for implementing interworking multicast in a passive optical network, which includes: receiving a multicast operations profile entity and a multicast subscriber information entity, where the multicast operations profile entity includes a dynamic access control list ACL, and correspondence exists between the multicast subscriber information entity and an ACL entry of the multicast operations profile entity; receiving an Internet group management protocol IGMP join packet, and obtaining multicast subscriber information carried in the IGMP join packet; searching for a multicast subscriber information entity matched with the multicast subscriber information that is obtained from the IGMP join packet; uniquely determining, according to the correspondence between the multicast subscriber information entity and the ACL entry, an ACL entry corresponding to the found multicast subscriber information entity; and creating a layer 2 forwarding entry according to the uniquely determined ACL entry. In addition, the embodiments of the present invention further disclose a system and an apparatus for implementing interworking multicast in a passive optical network.

Description

Technical field [0001] The present invention relates to passive optical network technology, in particular to a method, system and device for realizing intercommunication multicast in a 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 days 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 the implementation method of intercommunication multicast between OLT and ONT produced by different equ...

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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