genkai/hyeonhae workshop in fukuoka nclab, hanyang university implementation of explicit multicast...
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NCLAB, Hanyang UniversityGenkai/Hyeonhae Workshop in Fukuoka
Implementation of Explicit Multicast Implementation of Explicit Multicast with Mobile IP in Mobile Environmentwith Mobile IP in Mobile Environment 2003. 2. 27.2003. 2. 27.
J.W. PYUN, Prof. Y.J. PARK.J.W. PYUN, Prof. Y.J. PARK. (Hanyang University, Korea)(Hanyang University, Korea) Ph.D. W.T. Kim.Ph.D. W.T. Kim. (Rostic Technologies. Inc.) (Rostic Technologies. Inc.)
NCLAB, Hanyang UniversityGenkai/Hyeonhae Workshop in Fukuoka
Introduction
Overview Explicit Multicast(Xcast) Mobile IPv4 concepts Xcast over Mobile IPv4 Implementation(HA+, FA+, MN+) Conclusion
NCLAB, Hanyang UniversityGenkai/Hyeonhae Workshop in Fukuoka
Overview
Multicasting in Mobile IP - unicasting by tunneling - IGMP Using Xcast Adding Xcast function on Mobile IP software Experiment - Wireless LAN(IEEE 802.11b)
NCLAB, Hanyang UniversityGenkai/Hyeonhae Workshop in Fukuoka
Multicasting problem in Mobile IP
Router
Foreign Agent 1
Foreign Agent 2
Home Agent
Correspondent Node
APAP
MN in Notebook
NCLAB, Hanyang UniversityGenkai/Hyeonhae Workshop in Fukuoka
What is Xcast?(1)
• Xcast(Explicit Multicast)
small group multicast (max. 127) SSM(Source-Specific Multicast) No, need for multicast routing protocol The source encodes the list of destinations in the Xca
st header The Xcast packet can be converted into a normal uni
cast packet : called X2U (Xcast to Unicast)
NCLAB, Hanyang UniversityGenkai/Hyeonhae Workshop in Fukuoka
What is Xcast?(2)
NCLAB, Hanyang UniversityGenkai/Hyeonhae Workshop in Fukuoka
Xcast Application
• Xcast Application
IP Telephony(VoIP application) Video conferencing Real-time collaborative applications Networked games
NCLAB, Hanyang UniversityGenkai/Hyeonhae Workshop in Fukuoka
Mobile IPv4 Network
Home Agent
Foreign Agent
Foreign Agent
NCLAB, Hanyang UniversityGenkai/Hyeonhae Workshop in Fukuoka
Mobile IPv4 protocol
Home AgentForeign Agent
NCLAB, Hanyang UniversityGenkai/Hyeonhae Workshop in Fukuoka
Implementation Environment
Dynamics - HUT Mobile IP system http://www.cs.hut.fi/Research/Dynamics/
• developed at Helsinki University of Technology (HUT)• Mobile IP software for Linux - Home Agent, Foreign Agent module for Linux Router - Dynamics Mobile Node is partially ported for Microsoft Windows (98SE, ME, NT4, 2000) • Communication availability with Mobile IP in wireless LANs
NCLAB, Hanyang UniversityGenkai/Hyeonhae Workshop in Fukuoka
Implementation Environment(II)
Router
Foreign Agent 1
Foreign Agent 2
Home Agent
• Linux Router 4,• AP(Access Point) 2,• Notebook with
WLAN card
Correspondent Node
APAP
MN in Notebook
NCLAB, Hanyang UniversityGenkai/Hyeonhae Workshop in Fukuoka
Home Agent +
Home Agent Main
ICMP handler
Advertisement message
ARP processor
Routing Table update
Binding Info.
Authentication module
Registration Reply
Registration Request
X – tunnel
Tunneling
IP - IP
X – parse
Xcast module
Mobile IP module
NCLAB, Hanyang UniversityGenkai/Hyeonhae Workshop in Fukuoka
Foreign Agent +
Foreign Agent Main
Solicitation Reply
ARP processor
ICMP handler
Advertisement message
Routing Table update
Authentication module
Registration Reply
Registration Request
X – tunnel
Tunneling
IP - IP
X – parse
bitmap
Xcast module
Mobile IP module
NCLAB, Hanyang UniversityGenkai/Hyeonhae Workshop in Fukuoka
Conclusion
mobile multicasting for small group membership in Wireless LAN(IEEE 802.11b) with Xcastable Router embeded Xcast over Mobile IPv4 protocol
Xcast don’t need for multicast routing protocols Xcast only works with a limited number of receivers
NCLAB, Hanyang UniversityGenkai/Hyeonhae Workshop in Fukuoka
Reference
IBM Explicit Multicast
http://www-124.ibm.com/developerworks/oss/xcast/ Alcatel Explicit Multicast/Small Group Multicast http://www.alcatel.com/xcast/ Xcast over Mobile IP draft-lee-xcast-mobile-ip-00.txt Explicit Multicast(Xcast) Basic Specification draft-ooms-xcast-basic-spec-01.txt