QoS scalable tree aggregation

Abstract

Some of the main reasons which prevents the deployment of IP multicast are forwarding state scalability and control explosion problems. In this paper, we propose an algorithm called Q-STA (QoS Scalable Tree Aggregation) which reduces the number of forwarding states by allowing several groups to share the same tree. Q-STA accepts groups only if there is enough available bandwidth. Q-STA accepts much more groups and performs faster aggregations than previous algorithms. © IFIP International Federation for Information Processing 2005.