RNP/PAL/xxxx© 2004 – RNP

An experiment in videoconferencing over IPv6 using Isabel

Michael Stanton michael@rnp.brDirector of Innovation, RNP, BrazilFLIP-6, Montevideo, March 2004

(Thanks to Graciela M.L. Martins and Marcelo R. Faria for use of their slides)

Rede Nacional de Ensino e PesquisaPromovendo o uso inovador de redes avançadas no Brasil

• RNP IPv6 Backbone and Peerings

• What was the event?

• What was this videoconference experiment?

• What is the Isabel application?

• Conclusion

Agenda

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Rede Nacional de Ensino e Pesquisa - RNP

• RNP is a “quasi non-governmental organisation” (quango), formally a non-profit company, maintained by the federal government through a mangaement contract

• Offers production IP service to research and education community in Brazil, through a national backbone (one PoP in each state)

– Around 240 client institutions, normally connected to state networks (in the more populous states), or directly to the local PoP

• Good national and international connections to R&E and commodity networks

• Responsible also for exploring new networking technologies and developing new networking techniques

– IP/WDM, multicast, QoS, IPv6

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RNP IPv6 Backbone

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RNP IPv6 Backbone

• Routers with dual-stack: same equipment used in the IPv4 production service

• Native IPv6 links (ATM) and tunnels (IPv6/IPv4)

• RIPng is the internal routing protocol

• BGP4+ for external routing

• Cisco 750x with IOS images 12.2(14)S

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Peerings

• Currently RNP has IPv6 peering with seven other networks:

• Abilene / Internet 2 - USA (native)

• AMPath – USA (native)

• Renater – FR (tunnel)

• RCCN – PT (tunnel)

• ESNET – USA (tunnel)

• NTTcom / Verio – USA (tunnel)

• Telefônica Empresas Brasil – BR (native)

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Also, the future CLARA network (June 2004) will also support native IPv6

• Built and operated (2 years) throughh the ALICE project

– Jointly financed by EU (80%) and LA NRENs (20%)

• Bandwidth:– Main ring: 155 Mbps– Link to GÉANT: 622 Mbps– Spur links: 10 to 45 Mbps

(except Cuba – by satellite)– Access: up to 155 Mbps

• Peering, etc:– GÉANT– Future: ABILENE, APAN nets– Transit to LA NRENs

• IPv6 connectivity:– Native from day one

ClaraClara

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Event: Global IPv6 Service Launch Event – Brussels, January 2004

• The experiment was organised by the Euro6ix project of the IST programme (EU), coordinated by Telefónica Investigación y Desarrollo (Telefónica I+D) from Spain – Coordinator: Carlos Ralli Ucendo

• Participation by Telefônica Pesquisa e Desenvolvimento (TPD), part of Telefônica Empresas Brasil (TEB), and the Brazilian R&D community, coordinated by RNP

• Objective: to demonstrate the use of IPv6 applications– Magalia (network management)– Isabel (remote collaboration)

• The Brazilian R&D community participated in demonstrating the Isabel application

– Support from the Isabel team at Universidad Politécnica de Madrid (UPM), coordinated by Maria José Perea

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TelefónicaDATA

Telefónica I+D

MAD6IX

RNP

UK6X

6NET/GEANTGlobal Event

2001:800:40:2F1A::1

2001:800:40:2F1A::2

2001:800:40:2F01::1

2001:800:40:2F01::2

2001:800:40:2E02::2

2001:800:40:2E02::1

mortadelo.tid.euro6ix.comMAGALIA2001:800:40:2301::101

www.tid.euro6ix.org2001:800:40:2601::4

AS3352

AS1752

AS1916

AS6680

AmsterdamLondres

TIWSAS12956

LINX-IPv6AS5459

Sao Paulo

AMSIX-IPv6AS1200

Madrid

2001:1498:1:E004:C:3352:100:4/126

2001:1498:1:E004:C:3352:100:0/126.1 .2

.5 .6

2001:1498:1:A101:C1:0429:100:0/126

.1

2001:12F0::/32

2001:7f8:4::1553:1 2001:7f8:1::a500:1200:1

2001:618:a::/48

2001:1498::/32 2001:1820::/32

TelefónicaEmpresas

BrasilAS10429

PC-Brasil ISABELMAGALIA IPv6 Clients

Windows XPIPv6 Clients

STM-4

STM-4STM-4

GbEth

STM-1

STM-1

STM-4

Event – Network Topology

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Event – Network Topology

EUROPE

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Event – Participants (RNP side)

• Three RNP Offices: Campinas, Brasília and Rio de Janeiro

• Three Brazilian Universities:

•Federal University of Santa Catarina (UFSC)

•Federal University of Rio de Janeiro (UFRJ)

•University of São Paulo (USP)

• One regional networks: Rede-Rio (Rio de Janeiro)

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• Isabel is a real time service creation environment launched in 1993 by UPM. Today, it is commercialised by Agora Systems S.A.

• A free version is available, with limited functionality. The commercial version includes more features and supports collaboration services such as tele-teaching and tele-conferencing.

• The aim is the interconnection of a large number of users in multipoint conferences.

What is the Isabel application?

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Isabel adapts collaboration sessions to users’ needs, by including predefined scenarios:

• Tele-meeting: links meeting rooms and allows a free mode of interacting, allowing each participant to react at any moment.

• Tele-training: links classrooms and allows a strict floor control by the instructor of the interactions taking place. In this case, the instructir can bring any site into scene at any moment and students must request intervention.

• Tele-conference: this is a distributed conferencing service and is based on centralised control which guarantees timely delivery of content.

• Other new services can be configured by modifications to existing services.

What is the Isabel application?

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What is the Isabel application?

Source: http://isabel.dit.upm.es/intro.html

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System requirements:

• Based on SuSE Linux 8.1 operating system. Both the operating system and the application can be installed and configured using an instalation CD.

• Requires at least a Pentium IV with 256 MB RAM.

What is the Isabel application?

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• Different versions of Isabel cannot interoperate with each other

• The hardware requirements are very important to assure good quality during the conferences.

• The use of an operating system different from SuSE can make it difficult to configure Isabel.

• The use of a chat software (IRC) was very important to prepare the endpoints and resolve the problems with audio and video.

• Isabel doesn’t support the same quality that a endpoint specific equipment, such as a Polycom ViewStation or Tandberg Station, but represents a very good solution for distance education or collaboration when there is a need for a large number of endpoints.

Impressions about the use of Isabel

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• The quality of the link used is very important.

• A big problem found during the experiments was the packet loss at the connection between the RNP and Telefônica networks in São Paulo

• probably due to inadequate RNP router capacity at the peering point – will be fixed for “next time”

Performance problems during the experiment

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Conclusion

• This was the first demonstration in Brazil of a non-trivial application over IPv6

• Except for the performance problems, which are unrelated to the technology used, the experiment was considered to have been a success– Participants were very enthusiastic and contributed a lot of time

and energy to the project

• Most important lesson:

IPv6 will only really prosper when the users can see advantages in its use – this requires the availability of significant applications.

• Many thanks to all partners and participants!

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References

• IPv6 at RNP www.rnp.br/en/ipv6/

• LACNIC www.lacnic.net

Euro6ix www.euro6ix.org

• Global IPv6 Service launch event, Brussels, January 2004 www.global-ipv6.net

• Isabel group at UPM isabel.dit.upm.es

•Isabel distribution of the Madrid Global IPv6 Summit 2002 over an IPv6 transition network isabel.dit.upm.es/papers/isabelipv6/Isabelv6SAINT2002v3.pdf