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Network Group Seminar

The Silk Project. Network Group Seminar. Agenda. Overview of Silk Current Status Extending the Silk System IPv6 over satellite in Silk The longer Term Perspective. Silk O/v – Background.

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Network Group Seminar

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  1. The Silk Project Network Group Seminar

  2. Agenda • Overview of Silk • Current Status • Extending the Silk System • IPv6 over satellite in Silk • The longer Term Perspective

  3. Silk O/v – Background • In 2001, NATO Networking Panel agreed installation of Regional Network for NISs of the Southern Caucasus and Central Asia • Would connect existing NRENs into GEANT • Start with own resources – $2.5 M for 3 yrs • Allow to be extensible by others

  4. Silk O/v– Countries and Sites X X X X X X X X X

  5. Silk O/v – Basic Technology • VSAT Technology • DVB Shared Channel from hub, uses IPv4/DVB encoder at the DESY Hub • Has IPv4/DVB decoder at remotes • Uses Eurasiasat strapped beam transponder • Return link via Single Channel per Carrier from Remotes, uses Cisco router plus SCPC modem • Hub in Hamburg with 5.6m dish • Remotes in 8 NISs with 2.4 or 3.8 m dishes • Routers and Silk NOC part of Silk Network

  6. Silk O/v - West Beam Transponder Map

  7. Silk O/v – East Beam Transponder Map

  8. Silk O/v – Schematic of the Silk System

  9. Silk O/v - Dish at Each Remote Site

  10. Silk O/v – Architectural Overview • Hub Earth Station at DESY accesses European NRENs and Internet via GEANT • Provides direct International Internet access • National Earth Station at each Partner site • Operated by DESY • Provides Internet access via satellite • Additional earth stations from other sources • Routers for each Partner site • Linked on one side to the Satellite Channel • On the other side to the NREN

  11. Silk O/v– Equipment at Each Site • Kalitel-supplied, NATO financed, central hub and VSATs – 5.6m hub, 2.4 - 3.8m rem • Cisco-supplied and financed LAN items • A 7204 Router and 3524 Switch with 24 I/Fs • A CE 560 Content Engine with 155 GB of disc as a Web Cache • Aim was to provide from NATO resources to 750 Kbps up-link per NIS, shared 18 Mbps down-link

  12. Silk O/v– IPv4 Hub Site Schematic Silk NETWORK IPv4/DVB ENCAP SCPC IPv4 Silk ROUTER CONTENT CACHE Silk HUB (IPv4 only) NREN NREN ROUTER(S)

  13. Silk O/v – IPv4 Remote Site Schematic Silk NETWORK SCPC IPv4/DVB DECAP IPv4 Silk ROUTER CONTENT CACHE REMOTE SITE (IPv4 only) NREN NREN ROUTER(S)

  14. Silk O/v – Early Planned Silk Bandwidth Planned Silk total bandwidth from NATO Per half year Total bandwidth in Mbps 30 25 20 15 10 5 0 02/H2 03/H1 03/H2 04/H1 04/H2 05/H1

  15. Agenda • Overview of Silk • Current Status • Extending the Silk System • IPv6 over satellite in Silk • The longer Term Perspective

  16. Status - Current Status • All original 8 sites operational • Most equipment OK, some BUCs have trouble reaching 1.5 Mbps SCPC • After allowing for FEC and DVB O/h, we achieve 1.65/1.2 bits/Hz in DVB/SCPC • We are currently operating with 12 MHz; we expect to reach 15 MHz shortly • Currently 17.4 Mbps DVB, 4.4 Mbps transmit • The caches currently save about 10% B/w • Caches only store pages own E/s requests • Have implemented CIR quotas

  17. Status - Governance • Have set up Silk Board (SB) • Seven who manage Silk activities, plus one representative each Silk country • Set up Silk Executive Committee (ExCo) • Six manage Silk activities, plus one from each region • SB meets 3 x per year, 2 in Silk countries • Eurasiasat has hosted two in Turkey also • ExCo has 2 Teleconferences per month • SB has also invited guests

  18. Status – SPONGE • All NATO money must be spent on Partner countries – not Western staff • Silk must be managed. EC funding first project – SPONGE- to manage Silk • Partners UCL, Groningen, ARENA, GRENA • Four Work-packages • Management, Dissemination, Measurement and Optimisation, personal communication • Chair Silk Board, Silk ExCo, run Silk Web site, watch over Silk NOC

  19. Status – Co-funding • NATO has put in $2.7M • EC funds SPONGE management at $220K • DESY houses hub and runs NOC at $400K • Cisco Donation now worth $550K • ISOC donations for workshops - $120K • Have held one so far, but sent people to CEENET one • NSRC donations for books/WLAN - $50K • IREX is putting in – $30K • Soros/Eurasiasat travel - $30K • Many are funding projects that build up national infrastructure using Silk • Soros, EC Tacsis, UNDP, World Bank

  20. Status – Received Traffic Q1-04

  21. Status – Received Traffic Q1-04

  22. Status – Personal Communications • Have provided 2 Cisco phones per site • UCL operates voice server • UCL has put dial-out on server to very limited outside lines • Used regularly for ExCo meetings • Have done extensive H.323 usage • Included Heads of State and NATO SecGen • Distance lectures including World Bank • Requires using CIR in both directions

  23. Agenda • Overview of Silk • Current Status • Extending the Silk System • IPv6 over satellite in Silk • The longer Term Perspective

  24. Extending Silk – Possibilities • Have started talking to other funding agencies to provide extension • Could be just extra national bandwidth • Could be extra VSATs – now adding Kabul • Could be Receive-only earth stations • Could be extra networks on Silk routers • Could be alternate activity like IPv6 • Early discussions look promising • IREX and Soros will provide funds • University of Central Asia will use it via funds from Aga Khan.

  25. Extending Silk – Workshops • Will do four workshops – mainly in Russian • Mainly from ISOC funds, one co-funded ANW from NATO and CEENET • Security – Armenia, June • Wireless – Hungary, August • Distance Education - Azerbaijan, September • IPv6 - Hamburg, September • DNS, Registration, address allocation - Kazakhstan, November

  26. Agenda • Overview of Silk • Current Status • Extending the Silk System • IPv6 over satellite in Silk • The longer Term Perspective

  27. IPv6 Activities – Background • Countries expressed interest in getting experience – but not at cost of IP4 service • Fairly easy to do with dual-stack router and tunnelled IPv6 • Native IPv6 needs special hardware for DVB • ESA/IABG wanted to test IPv6/DVB H/w • Will provide boards and some B/w • EC agreed that 6NET could support dissemination to Silk Project • Some B/w if there is an iPv6 workshop

  28. IPv6 Activities – Overview • Today‘s DVB-S encapsulator use mainly MPE, which does not support IPv6 • Many satellite links are uni-directional • Link-layer multicast not always supported • Management systems are often proprietary and support only IPv4 • Other proprietary components (e.g. PEP) do not support IPv6 • All those are investigated within an ESA IPv6 study

  29. IPv6 Activities - Key Transition issues IPv6 network IPv6 network Network 1 Network 2 Satellite IPv4 IPv6 DVB demodulator DVB modulator DVB->IP IP->DVB Serial Int R1 R2 Serial Int SCPC modem SCPC modem IPv6

  30. IPv6 Activities – Two basic solutions • Use of IPv6 tunneling • Could be done with existing DVB-S equipment • Use of Ethernet bridging or IPv6 over IPv4 tunnel • Will be done by Silk project • Integration of native IPv6 • Use new DVB-S equipment based on ULE • Will be provided to Silk by ESA / IABG

  31. IPv6 Activities - IPv6 provisions to Silk • Propose to upgrade routers to IPv6 • Specific routers have worse performance, but this is no problem at Silk speeds • ESA/IABG will provide one DVB-S encapsulating router and five decapsulating PC cards • ESA/IABG provide extra bandwidth • Use for 2 MHz IPv6/DVB common channel • Use for 5 x 120 KHz IPv6/SCPC transmit channel • CEC (6NET) will provide extra bandwidth • Use for 5 x 64 KHz IPv6/SCPC transmit channel

  32. IPv6 Activities– Hub Enhancements Silk NETWORK IPv4 ENCAP IPv6 ENCAP SCPC Silk ROUTER (DUAL STACK) CONTENT CACHE Silk HUB (DUAL STACK) NREN NREN ROUTER(S)

  33. IPv6 Activities– Remote Site Enhancements Silk NETWORK IPv4 DECAP IPv6 DECAP SCPC Silk ROUTER (DUAL STACK) CONTENT CACHE REMOTE SITE (DUAL STACK) NREN NREN ROUTER(S)

  34. Agenda • Overview of Silk • Current Status • Extending the Silk System • IPv6 over satellite in Silk • The longer Term Perspective

  35. Longer Term – Future Steps • NATO will probably continue after 7/05 • But at a reduced rate with declining funding • Co-funding is vital to many others also • Hard to achieve with these countries • Form of Connectivity will become hybrid • Satellite necessary for some locations • Fibre will come into some sites; already looking at terrestrial possibilities • Other satellites cheaper than this Silk solution – particularly in Caucasus • May have to move hub to sit on single beam

  36. Longer Term – Future Steps -2 • Most terrestrial solutions go through Russia and perhaps Kazakhstan • Will become cheaper, but acceptable politicially? • EC starting specific Caucasus Programme • Perhaps Caucasus connects by fibre to GEANT, some others stay satellite • Will discuss Central Asia plans with APAN • Perhaps there will be links to Pacific Rim • Should use satellite broadcast capability • Both Multicast and Broadcast caching • Will make proposal to NATO Science Committee in October, and also to EC (not only IST)

  37. This may not be high science, but it is a fascinating project with very high visibility – and it is fun

  38. More information - Links • Silk project • http://www.silkproject.org • ESA IP over DVB project • http://telecom.esa.int/telecom/www/object/index.cfm?fobjectid=11271

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