A Survey and Comparison of Overlay Multicast

1
A Survey and Comparison of Overlay Multicast

• Ching-Feng Li

2
Introduction

• Different applications have different
  characteristics which may have influence on the
  design choice of overlay multicast techniques
• Survey several existing overlay multicast
  techniques and give a brief comparison of them

3
Comparison of different overlay multicast
techniques
4
Example applications and their characteristics
5
Factors that affect choice of multicast technique

• Scalability
• Fault tolerance
• Performance
• Quality of service
• Security

6
Choice of overlay multicast tree in development
phase

• Mobile agents can be easily deployed to implement
  different algorithms of overlay multicast tree
  construction and maintenance
• Purpose to compare the performance of different
  algorithms

7
Adaptive reconfiguration of multicast tree (1/2)

• Adaptive reconfiguration of host-based multicast
  tree
• Mobile agent can migrate adaptively according to
  the load of resident host
• After mobile agent migrates, the configuration of
  multicast tree wont change at once
• After mobile agent migrates, it reconfigures the
  multicast tree at the new resident host if
  necessary
• If the configuration of multicast tree changes,
  mobile agent will notify the old resident host

8
Adaptive reconfiguration of multicast tree (2/2)

• Adaptive reconfiguration of agent-based multicast
  tree
• Mobile agent can migrate adaptively according to
  the load of resident host
• After mobile agent migrates, the configuration of
  multicast tree will change at once
• After mobile agent migrates, it acts as a data
  transmission proxy for the old resident host at
  the new resident host

9
Issues

• How many agents will be used?
• How to distribute the agents to the host?
• How to handle agent migration for reconfiguration
  of multicast tree?