Journal of South China University of Technology (Natural Science Edition) ›› 2010, Vol. 38 ›› Issue (7): 7-13.doi: 10.3969/j.issn.1000-565X.2010.07.002

• Computer Science & Technology • Previous Articles     Next Articles

DiffServ Multicast Scheme Based on Encapsulation and Aggregation

Zhou Jie  Peng Bo  Li Ming   

  1. Comunication and Computer Network Lab of Guangdong,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2009-12-04 Revised:2010-03-16 Online:2010-07-25 Published:2010-07-25
  • Contact: 周杰（1964-）,男,教授,博士,主要从事IP-QoS、IP-组播研究 E-mail: jiezhou@scut.edu.cn
  • About author:周杰（1964-）,男,教授,博士,主要从事IP-QoS、IP-组播研究.
  • Supported by:

    国家科技支撑计划资助项目（2008BAH37B08）

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Abstract:

Proposed in this paper is an encapsulation-and-aggregation-based DiffServ multicast scheme named EADSMCast （ Encapsulated and Aggregated DiffServ Multicast） . Derived from the encapsulation-based DSMCast, EADSMCast encapsulates the forwarding information of all core routers of the aggregated tree into each multicast packet head,thus ensuring the statelessness and scalability of core routers in the service domain. Moreover,by improving the group-tree matching algorithm,several multicast groups with similar forwarding structure may share the same aggregated tree,thus reducing the size of multicast routing table maintained by edge routers. Simulated results indicate that EADSMCast is a scalable scheme for supporting heterogeneous QoS multicast.

Key words: DiffServ, multicast, DSMCast, aggregated multicast