多核单向共享树多播路由协议  

Multicast Routing Protocol Using Multi Cores Uni Directional Shared Trees

作　　者：马钰璐[1] 王重钢[1] 程时端[1] 

机构地区：[1]北京邮电大学交换技术与通信网国家实验室,北京100876

出　　处：《计算机学报》2001年第7期710-715,共6页Chinese Journal of Computers

摘　　要：CBT和 PIM- SM是两类典型的域内多播路由协议 .但是 CBT缺乏可行的组成员管理机制 ,如对于发送源的接纳控制和认证 .PIM- SM虽然可以提供类似的机制 ,但此时多播业务流大量集中在 RP处 ,容易导致网络拥塞 ,并且频繁的认证很容易使 RP处理器过载 ,PIM- SM还是单点故障协议 ,RP的失效将导致整个多播树失效 .文中提出一种新的域内多播路由协议 ,通过多点 (核 )接入与单向传送机制 ,有效地解决了多播的发送方管理。The current service model in IP multicast does not consider group management, including sender and receiver authorization. The lack of such functions presents a danger for companies providing content over multicast groups as well as receivers that pay for a given service. We propose a new multicast routing protocol to settle down such issues. The MC-UD-ST protocol introduces the combination of two ideas of multiple cores and uni-directional transporting that are parts of CBT and PIM-SM respectively. Uni-directional transporting is the base and presupposition of access control and authentication for multicast senders, and can prevent from potential attacks. Although Pim-Sm protocol possesses this virtue, it is single-failure and vulnerable, RP failure can destroy whole multicast tree in autonomous domain, furthermore, traffic concentration and frequent authorization operation may overload RP. Although CBT tree is most reliable, it is hard to apply access control policy to all on tree nodes. MC-UD-ST is the compromise between CBT and PIM-SM. Through selective multiple cores and uni-directional transporting mechanism, it achieves both objects, and the reliability of MC-UD-ST multicast tree is quantifiable.

关 键 词：接纳控制 业务量控制 INTERNET 域内多播路由协议 

分 类 号：TN915.04[电子电信—通信与信息系统] TP393.4[电子电信—信息与通信工程]