1 mbone : today and tomorrow 신명기 ([email protected]) 한국전자통신연구원...
TRANSCRIPT
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Talk Outline• IP Multicast on the Internet
– Today : MBone(Multicast Backbone)– Tomorrow : Internet Multicast Infrastructure
• Protocols and Applications• MBone Deployment Activities
– APAN, APII– CCIRN– IPMI– MBone-KR
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IP Multicast on the Internet
• MBone(Multicast Backbone)– a virtual network layered on top of the Internet to
support routing IP multicast packets– originated in an effort to multicast audio/video from
IETF– protocols and services have been conducted
• Application and Development– audio/video conferencing, shared white board– enables these applications to scale to very large
numbers of recipients
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Today’s MBone• Current Status
– IP Multicast capable Host / Router– Tunneling between mrouters : DVMRP infrastructure
• MBone -> Internet Multicast Infra.– IP multicast is one of the fundamental technologies
necessary to scale the Internet to very large sizes– IP multicast also enables new classes of applications
• audio/video streaming, push applications, software distribution, multi-point conferencing and proxy/caching
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Protocols Architecture
IPv4/IPv6IGMP
TCPUDP
HTTPRTP/RTCPRSVP
Audio Video HTML
SAPSIP
SharedHTML/
WB
SDP
VAT VIC HOTJAVA
SDRIPv4/IPv6: Internet Protocol v4/6IGMP: Internet Group Management ProtocolUDP : User Datagram ProtocolTCP: Transmission Control ProtocolRSVP :resource ReSerVation ProtocolRTP :Real Time Transport ProtocolRTCP: RTP Control ProtocolSAP: Session Announcement ProtocolSIP:Session Initiation ProtocolSDP: Session Description ProtocolVAT: Visual Audio TeleconferencingVIC : VIdeo ConferenceSDR : Session DiRectoryWB : White Board
Integrated Services Forwarding
WB
Reliable Multicast
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Application• Example : Multica
st Video– vic : video conferencing tool fro
m LBL– ftp:// ftp.mbone.or.kr/ mbone/
applications/vic/*– based on the RTP– for Sun, SGI, HP, Linux, and Wi
ndows 95
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New Application• Example
– Bringing Multicast Audio/Video to the Web
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Deployment & Evolution
• Why Important ?– Internet broadcasting and multicasting are the next chapters in the
evolution of the Internet as a revolutionary catalyst for the Information Age." --Vint Cerf
• Research Groups– Technology & Evolution : IETF mboned, CCIRN MBone WG– Infrastructure : Internet2, CA*net-II, TEN-34, APAN, APII, – Business & Education : IPMI
• MBone will be a component for some period
Multicast Infrastructure• APAN (Asia-Pacific Advanced Network)
• APII (Asia-Pacific Information Infrastructure)
• CCIRN (Coordinating Committee for Intercontinental Research Networking)
• IPMI(IP Multicast Initiative)
• vBNS, Intenet2, NGI, CA*net-II, TEN-34 ...
APAN• Asia-Pacific Advanced Network Consortium
– Research & Development for Advanced Applications and Services– Advanced Networking Environment for Research Community– International Collaboration– http://www.apan.net
• Primary Members– Australia, Japan, Korea, Singapore, USA
Exchange
vBNS / Internet2 / NGI
CA*net-II
APANnational networks
TEN-34national networks
by Kilnam Chon
Working Groups
Application Technology BioInformatics Cache Education IPv6 Engineering MBone Environment Measurement Medical Informatics Network Design Science RSVP
Multimedia Security
APAN-KR MBone WG
• Network Area– Phase 1 : DVMRP Tunnel to APAN-JP– Phase 2 : PIM-DM connection among JP, SG– Phase 3 : BGP4+ Implementation with vBNS/Internet2
• Application Area– High Performance MBone (KAIST SA Lab)– Tele-Conference between Singapore at MEDINFO’98
APII• Asia-Pacific Information Infrastructure
– driven by Asia-Pacific National Governments
• started Korea and Japan in 1997 first– connects 2 Mbps between KR and JP in 1998– will be upgraded 2 ~ 45 Mbps in 1999
• will be assigned a request-bandwidth by experimental time table among projects
• 12 projects are proposed now
APII MBone Project• Korea
– KT Internet Team : IP Multicasting Network setup– KAIST SA Lab : High Performance MBone
• Japan – KDD
• Regular MBone Session on APII• Joint Project with APAN MBone WG
– BGP4+ Testbed Implementation
CCIRN• Coordinating Committee for Intercontine
ntal Research Networking– supports international collaboration for open research and schol
ar persuit– http://www.fnc.gov/CCIRN.html
• Participants– USA, Canada, Asia, Europe, South America
• Working Groups– MBone, Measurement, Caching, Security WGs
CCIRN MBone WG• Shortage of Today’s MBone
– Scale & Inter-Domain Routing
• Future Requirements– Inter-Domain Topology Discovery– Inter-Domain Distribution Tree Construction
• Future Direction– Alternative Multicast Architecture : BGP4+– Run BGP4+ among peer BGP4+ networks– Run PIM or CBT over BGP4+
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IPMI(IP Multicast Initiative)
• A Marketing and Education Forum– To speed the migration to native IP multicast by providing a set of mar
keting and educational services which promote the creation, use, and deployment of standards-based IETF IP multicast products and solutions.
• Role and Project– Expanding the marketing for IP Multicast products and services– Internet Multicast Channel (IMC)
• Foundation : Stardust Technologies– http://www.ipmulticast.com
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Internet Multicast Channel
• What ?– a scheduling of transmissions (webcasts) over Multicast-enab
led portions of the Internet.– Beginning in 1997, 12 people with a Multicast-enabled feed f
rom their ISP will be able to tune-in
• Key Objectives– commercial IP Multicast services on the Internet from ISP– Stimulate demand for Multicast-based content, products and
services. – Demonstrate that Multicast is the key Internet technology pro
viding mass audience distribution
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IMC Network• Extend its scope from DVMRP cloud to PIM-based routing
networks. • Several service providers, including cable and satellite
vendors, are also planning high-speed extensions to broaden the reach of the Internet Multicast Network
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IMC Project, Cont,d• IMC Head-End
– The switched network fabric. – The audio/video, push and software content distribution servers. – The demo stations. – The content feeds. – The connection to the Internet Multicast Network.
– The external feed to view the transmission from another ISP
• The IMC Transmissions– Audio/Video (television-style) via multiple vendors?video
streaming products. – Text, graphics and software via multiple vendors?"push" and
reliable file transfer products
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WG and Membership• Working Group
– Technology– Internet Transition Strategies– Research – PR– Business Development
• Member– Executive Membership– Membership
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Members• Founding Members
– Precept Software – Stardust Technologies
• Executive/Charter Members– 53 including AT&T, Cisco Systems, DEC, Hewlett-
Packard, Internet Initiative Japan*, NASA, Netscape Communications, MCI, Microsoft Corporation
• Members of IPMI– 34 including ICAST Corporation
MBone-KR
망관리분과
MBone-KR (KRIA) TG MBone (OSIA)
중계분과
NetworkTask Force
기술분과 TechnologyGroup
• ISP 중심• Tunneling• nms.mbone.or.kr
• mbone 홍보• 중요행사 중계• 중계 자문
• Workshop• www.mbone.or.kr• ftp.mbone.or.kr• book.mbone.or.kr
• Protocol• Application• ...
• BGP4+ Test• APAN-KR• ...
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Conclusions• IP Multicast on the Internet
– MBone : a virtual network layered on top of the Internet to support routing IP multicast packets, IETF
– Internet Multicast Infrastructure : IETF MBoneD, CCIRN, APAN, Internet2, CA*net-II, TEN-34, IPMI
• MBone will be a component of Multicast Infrastructure for some period