This paper first discusses the practical significance of implementing multicasting in EPON systems and then presents a scheme for achieving this goal by adopting IGMP Snooping on the basis of analysis and comparison of the existing layer two(L_2) multicasting protocols and in connection with the characteristics of EPON itself.
文章首先讨论了在以太网无源光网络(EPON)系统上实现组播的现实意义,然后在对现有的二层组播协议分析与比较的基础上,提出采用IGMP Snooping(英特网组管理协议侦听)在EPON上实现组播,并结合EPON自身的特点,提出了实现方案,最后详细描述了光线路终端(OLT)和光网络单元(ONU)是如何支持IP组播业务的。
