A scalable issue in multicast protocols: Reducing forwarding states

Sheng Xu, Ng Chee Hock, Liren Zhang

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


Forwarding state explosion may cause a scalability problem in multicast protocols. In this paper we describe a technique, called dynamic overlap tree path (DOTP), to improve the scalability of existing multicast protocols. This technique, which can be incorporated in both the dense and sparse modes of multicast protocols, dynamically finds overlapped tree paths and merges their forwarding states to reduce the storage requirement in multicast routers without introducing any additional control-message overheads. Using the OPNET simulation package, we implemented some multicast protocols such as CBT and PIM and their modifications to investigate the efficiency of our proposed technique. According to the simulation, the overall average forwarding-state table size of the networks simulated can be reduced by about 30%.

Original languageEnglish
Article number796157
Pages (from-to)37-42
Number of pages6
JournalIEEE International Conference on Networks, ICON
Publication statusPublished - 1999
Externally publishedYes
Event1999 IEEE International Conference on Networks, ICON 1999 - Brisbane, QLD, Australia
Duration: Sept 28 1999Oct 1 1999

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Software
  • Electrical and Electronic Engineering
  • Safety, Risk, Reliability and Quality


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