Adaptive system and method of multicast cascade connection in PON system

Abstract

Disclosed are an adaptive system and method of multicast cascade connection in a PON system. The adaptive system comprises a multicast protocol module, a multicast adapter module, and a plurality of chip driving modules, wherein the multicast protocol module is used for treating a multicast protocol message according to a multicast protocol requirement; each chip driving module is used for driving one chip; the multicast adapter module is used for treating adaption between the multicast protocol module and the chip driving modules and for shielding the multicast protocol module against sensing cascade connection of a plurality of chips; the multicast adapter module stores a first terminal information table; and the multicast protocol module stores a second terminal information table. The adaptive system further includes a registration interface information sheet, which includes two parts of a multicast two-layer forwarding table registration interface and a multicast protocol message reception-transmission registration interface. The adaptive system and method of multicast cascade connection in the PON system are suitable for a situation of cascade connection of various kinds of or a plurality of chips, and for shielding chip multicast information and difference between each chip cascade manner, and enable the multicast protocol module to completely run on a unified chip in logical.

Description

technical field [0001] The present invention relates to the field of multicast cascading in a PON (Passive Optical System, Passive Optical Network) system, and specifically relates to an adaptation system and method for multicast cascading in the PON system. Background technique [0002] IGMP (Internet Group Management Protocol, Internet Group Management Protocol) protocol is a protocol responsible for management of IP multicast members in the TCP / IP (Transfer Control Protocol / Internet Protocol) protocol suite. Establish and maintain multicast group membership with its directly adjacent multicast routers. The PON system mainly implements Layer 2 multicast protocols such as IGMP Snooping and IGMP Proxy, and dynamically joins, exits, and maintains multicast group members through IGMP Report / Leave / Query messages. [0003] The implementation mechanism of IGMP Snooping is: the device listens to and intercepts the IGMP request from the user host to the upper router, and forms a m...

AI Technical Summary

Problems solved by technology

However, if the chip does not support the cascade mode, or the corresponding port does not support the configuration of the cascade mode, or the cascaded chips are chips with completely different functions (for example, one is a PON chip, the other is an Ethernet switch chip, etc.), or The cascaded chips are chips from different manufacturers, and the cascaded functions provided by the chips cannot be used directly.

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