1 MBone : Today and Tomorrow 신명기 한국전자통신연구원 멀티미디어표준연구실 HSN’98, 전북대학교

2 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

3 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

4 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

5 Protocols Architecture IPv4/IPv6 IGMP TCPUDP HTTPRTP/RTCPRSVP AudioVideoHTML SAPSIP Shared HTML/ WB SDP VATVICHOTJAVA SDR IPv4/IPv6: Internet Protocol v4/6 IGMP: Internet Group Management Protocol UDP : User Datagram Protocol TCP: Transmission Control Protocol RSVP :resource ReSerVation Protocol RTP :Real Time Transport Protocol RTCP: RTP Control Protocol SAP: Session Announcement Protocol SIP:Session Initiation Protocol SDP: Session Description Protocol VAT: Visual Audio Teleconferencing VIC : VIdeo Conference SDR : Session DiRectory WB : White Board Integrated Services Forwarding WB Reliable Multicast

6 Application Example : Multicast Video – vic : video conferencing tool from LBL – ftp:// ftp.mbone.or.kr/ mbone/applications/vic/* – based on the RTP – for Sun, SGI, HP, Linux, and Windows 95

7 New Application Example – Bringing Multicast Audio/Video to the Web

8 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 – Primary Members – Australia, Japan, Korea, Singapore, USA Exchange vBNS / Internet2 / NGI CA*net-II APAN national networks TEN-34 national 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 Intercontinental Research Networking – supports international collaboration for open research and scholar persuit – 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+

18 IPMI(IP Multicast Initiative) A Marketing and Education Forum – To speed the migration to native IP multicast by providing a set of marketing 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 –

19 Internet Multicast Channel What ? – a scheduling of transmissions (webcasts) over Multicast- enabled portions of the Internet. – Beginning in 1997, 12 people with a Multicast-enabled feed from 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 providing mass audience distribution

20 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

21 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

22 WG and Membership Working Group – Technology – Internet Transition Strategies – Research – PR – Business Development Member – Executive Membership – Membership

23 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 Network Task Force 기술분과 Technology Group ISP 중심 Tunneling nms.mbone.or.kr mbone 홍보 중요행사 중계 중계 자문 Workshop ftp.mbone.or.kr book.mbone.or.kr Protocol Application... BGP4+ Test APAN-KR...

25 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