摘要
由于组播报文总是沿着从组播接收者到组播发送者单播路由的相反方向进行转发,这决定了同一主机收到的同一组播源的不同组播流通常总是沿着相同的路径传送。针对某些应用场景中需要将这些报文人工分流到不同的链路传送的情况,在阐述组播转发原理的基础上,探讨了组播路径控制的关键技术,并提出了解决此类组播分流问题的思路,在现网上部署后满足了业务系统需求,同时方案简单和易于工程实现。
As the multicast messages are always forwarded along the path contrary to the unicast routing from the multicast receivers to the multicast senders, the different multicast streams of same multicast source received by the same host are always transmitted along the same path. Aiming at the condition that these messages need to be artificially distributed to the different links for transimmision in some application scenarios, this paper discusses the key technologies of multicast routing control, and proposes the solutions of multicast distribution problems based on the elaboration of multicast forwarding principles. The results show that this technology satisfies the business system requirements after deployment across Internet, and has the advantages such as simple scheme and easy to realize.
出处
《计算机与网络》
2014年第7期64-66,共3页
Computer & Network
关键词
指定源组播
组播路由控制
反向路径检查
RPF
source-specific multicast
multicast routing control
reverse path check
reverse path forwarding
