Simple Explicit Multicast (SEM)

Project Description

Recently several multicast mechanisms, known as small group multicast, were proposed that scale better with the number of multicast sessions than traditional multicast does. We propose a new approach, Simple Explicit Multicast (SEM), which uses an efficient method to construct multicast trees and deliver multicast packets. SEM is original because it adopts the source-specific channel address allocation, reduces forwarding states in non branching node routers and implements data distribution using unicast trees.

Related work

Xcast Simulation Project page

Publications

• Internet Draft : Simple Explicit Multicast (SEM)
• Inproceedings Paper : A. Boudani, B. Cousin. Sem: A new small group multicast routing protocol. 10th International Conference on Telecommunications (ICT'2003), Tahiti, Papeete, France, February 2003. Sem.pdf
  
• IRISA Research Report : A. Boudani, B. Cousin. An Hybrid Explicit Multicast/Unicast Recursif Approach for Multicast Routing. Report N°1687, February 2005

SGM-BoF agenda for IETF 48th meeting (July 2000)

SEM Simulation Files

All SEM simulation Files are in the following directory. This directory contains the files needed to make SEM simulatin un on NS version 2.7 :
• Sem.cc and Sem.h are the protocol specifications and should be placed in the NS directory.
• tcl/Sem.tcl should be placed in the tcl/mcast/ directory in NS and sem.tcl is the simulation example.
Note that Xcast should be defined as a new protocol in NS.