以太网无源光网络系统中组播的设计  

Design of multicast in ethernet passive optical network system

作　　者：谭锋[1] 谭钦红[1] 黄俊[1] 

机构地区：[1]重庆邮电大学光通信重点实验室,重庆400065

出　　处：《光通信技术》2009年第6期15-17,共3页Optical Communication Technology

基　　金：2008重庆教委自然科学基金(KJ080507)资助

摘　　要：设计了EPON系统中基于VLAN的组播实现方案。该方案在OLT和ONU上使它们同时具有监听和代理的功能,减少了组播控制报文的带宽开销;并且改进了ONU设备的功能与结构,通过逻辑链路标识承载着与IP组播地址相对应的组播VLANID,使系统传输过程中在RS子层就能准确过滤转发数据。This paper presents a design of Multicast based on the VLAN in the EPON system. The program makes the OLT and ONU have the same function of monitoring and agent, reducing the bandwidth costs of multicast control packet, also improves the function and structure of ONU. Through the LLID carries with Multicast VLAN ID which corresponding to the IP Multicast addresses, the system can filter forward packets accurately in the RS.

关 键 词：IGMP SNOOPING IGMP Proxy LLID 组播 VLAN 以太网无源光网络 

分 类 号：TN914[电子电信—通信与信息系统]