基于PIM-SM组播的园区网IPTV的架构与实现  

Architecture and Realization of IPTV in Campus Network Based on PIM-SM

作　　者：朱维嘉[1] 郭晓[1] 帅千钧[1] 

机构地区：[1]中国传媒大学计算机与网络中心,北京100024

出　　处：《中国传媒大学学报（自然科学版）》2013年第4期22-26,共5页Journal of Communication University of China：Science and Technology

摘　　要：MPEG2编码的视音频TS流直接封装在UDP的组播数据包中,通过IP承载网发送给接收用户,组播协议PIM-SM通过生成(*,G)和(S,G)表项实现RPT/SPT转发组播数据包,TCAM结构支持系统的硬件转发。系统实现在园区网内IPTV的组播方式转发,满足用户需求的同时对网络系统本身无影响。TS traffic encoded with MPEG2 is encapsulated in muhicast packet of UDP, sending ers over IP network. Through matching （ ＊ , G） and （ S, G） lists following RPT/SPT, multicast forwarding by PIM -SM . Hardware Forwarding is supported by TCAM o The system achieve muhicast in campus network, influence. Fulfilling to receiv- packets is IPTV with the requirement of users, simultaneously, the network system has no

关 键 词：PIM-SM RP DR RPT SPT RPF (* G) (S G) IIF OIF 

分 类 号：TN915.6[电子电信—通信与信息系统]