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基于VLAN的组播方案在EPON系统中的设计与实现
引用本文:朱敏,邹君妮,林如俭.基于VLAN的组播方案在EPON系统中的设计与实现[J].上海大学学报(自然科学版),2007,13(3):230-236.
作者姓名:朱敏  邹君妮  林如俭
作者单位:上海大学 通信与信息工程学院,上海 200072
摘    要:提出一种新型的EPON(Ethernet Passive Optical Network)系统中基于VLAN(Virtual Loc al Access Network,虚拟局域网)的组播实现方案.该方案在OLT(Optical Line Terminal) 和ONU(Optial Network Unit)上 同时部署监听(Snooping)和代理(Proxy)功能,大大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(LLID)承载着与IP组播地址相对应的组播VLAN ID,实现了在RS(Reconcitiation Sub layer)子层准确过滤转发数据.并且详细论述了方案的基本思想与实现细节,给出了验证方案的实验过程与结果.

关 键 词:逻辑链路标识(LLID)  虚拟局域网(VLAN)  以太无源光网络(EPON)  因特网组管理协议(IGMP)监听  组播  
文章编号:1007-2861(2007)03-0230-07
收稿时间:2006-08-02
修稿时间:2006-08-02

A Novel Implementation of VLAN-Based Multicast Carried on LLID in EPON
ZHU Min,ZOU Jun-ni,LIN Ru-jian.A Novel Implementation of VLAN-Based Multicast Carried on LLID in EPON[J].Journal of Shanghai University(Natural Science),2007,13(3):230-236.
Authors:ZHU Min  ZOU Jun-ni  LIN Ru-jian
Institution:School of Communication and Information Engineering, Shanghai University, Shanghai 200072, China
Abstract:This paper presents a novel implementation of VLAN-based multicast in EPON system.In the implementation,OLT and ONU have all IGMP snooping and proxy capability,greatly reducing the bandwidth required for multicast control message.It also improves ONU's functions and structures.Using logical link identifier(LLID) to carry multicast VLAN that is mapped with IP multicast address,RS sub-layer can exactly filter and distribute multicast data frames.The basic idea and process of implementation are given in detail,verification procedure and test results are provided.
Keywords:IGMP snooping  LLID  muhicast  VLAN  EPON
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