network group seminar
DESCRIPTION
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. - PowerPoint PPT PresentationTRANSCRIPT
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Network Group Seminar
The Silk ProjectThe Silk Project
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Agenda
Overview of SilkCurrent StatusExtending the Silk SystemIPv6 over satellite in SilkThe longer Term Perspective
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Silk O/v – Background
In 2001, NATO Networking Panel agreed installation of Regional Network for NISs of the Southern Caucasus and Central AsiaWould connect existing NRENs into GEANTStart with own resources – $2.5 M for 3 yrsAllow to be extensible by others
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Silk O/v – Countries and Sites
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Silk O/v – Basic Technology VSAT Technology
DVB Shared Channel from hub, uses IPv4/DVB encoder at the DESY HubHas IPv4/DVB decoder at remotesUses Eurasiasat strapped beam transponder
Return link via Single Channel per Carrier from Remotes, uses Cisco router plus SCPC modemHub in Hamburg with 5.6m dishRemotes in 8 NISs with 2.4 or 3.8 m dishesRouters and Silk NOC part of Silk Network
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Thinking the future
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Silk O/v - West Beam Transponder Map
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Silk O/v – East Beam Transponder Map
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Silk O/v – Schematic of the Silk System
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Silk O/v - Dish at Each Remote Site
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Silk O/v – Architectural OverviewHub Earth Station at DESY accesses European NRENs and Internet via GEANT
Provides direct International Internet access
National Earth Station at each Partner siteOperated by DESY
Provides Internet access via satellite
Additional earth stations from other sources
Routers for each Partner siteLinked on one side to the Satellite Channel
On the other side to the NREN
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Silk O/v– Equipment at Each Site
Kalitel-supplied, NATO financed, central hub and VSATs – 5.6m hub, 2.4 - 3.8m remCisco-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
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Silk O/v– IPv4 Hub Site Schematic
IPv4/DVB ENCAP
CONTENTCACHE
NREN
Silk HUB (IPv4 only)
NRENROUTER(S)
IPv4 Silk ROUTER
Silk NETWORK
SCPC
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Silk O/v – IPv4 Remote Site Schematic
CONTENTCACHE
NREN
REMOTE SITE (IPv4 only)
NRENROUTER(S)
IPv4/DVB DECAP
IPv4 Silk ROUTER
Silk NETWORK
SCPC
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Silk O/v – Early Planned Silk Bandwidth
Planned Silk total bandwidth from NATOPer half year
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5
10
15
20
25
30
02/H2 03/H1 03/H2 04/H1 04/H2 05/H1
Total bandwidth inMbps
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Agenda
Overview of SilkCurrent StatusExtending the Silk SystemIPv6 over satellite in SilkThe longer Term Perspective
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Status - Current Status
All original 8 sites operationalMost equipment OK, some BUCs have trouble reaching 1.5 Mbps SCPCAfter allowing for FEC and DVB O/h, we achieve 1.65/1.2 bits/Hz in DVB/SCPCWe are currently operating with 12 MHz; we expect to reach 15 MHz shortly
Currently 17.4 Mbps DVB, 4.4 Mbps transmitThe caches currently save about 10% B/w
Caches only store pages own E/s requestsHave implemented CIR quotas
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Status - GovernanceHave 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 countriesEurasiasat has hosted two in Turkey also
ExCo has 2 Teleconferences per monthSB has also invited guests
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Status – SPONGE
All NATO money must be spent on Partner countries – not Western staffSilk must be managed. EC funding first project – SPONGE- to manage Silk
Partners UCL, Groningen, ARENA, GRENAFour Work-packages
Management, Dissemination, Measurement and Optimisation, personal communication
Chair Silk Board, Silk ExCo, run Silk Web site, watch over Silk NOC
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Status – Co-funding
NATO has put in $2.7MEC funds SPONGE management at $220KDESY houses hub and runs NOC at $400KCisco Donation now worth $550KISOC donations for workshops - $120K
Have held one so far, but sent people to CEENET oneNSRC donations for books/WLAN - $50KIREX is putting in – $30KSoros/Eurasiasat travel - $30KMany are funding projects that build up national infrastructure using Silk
Soros, EC Tacsis, UNDP, World Bank
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Status – Received Traffic Q1-04
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Status – Received Traffic Q1-04
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Status – Personal Communications
Have provided 2 Cisco phones per siteUCL operates voice server
UCL has put dial-out on server to very limited outside lines
Used regularly for ExCo meetingsHave done extensive H.323 usage
Included Heads of State and NATO SecGen
Distance lectures including World BankRequires using CIR in both directions
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Agenda
Overview of SilkCurrent StatusExtending the Silk SystemIPv6 over satellite in SilkThe longer Term Perspective
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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 KabulCould be Receive-only earth stationsCould be extra networks on Silk routersCould be alternate activity like IPv6
Early discussions look promisingIREX and Soros will provide fundsUniversity of Central Asia will use it via funds from Aga Khan.
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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
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Agenda
Overview of SilkCurrent StatusExtending the Silk SystemIPv6 over satellite in SilkThe longer Term Perspective
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IPv6 Activities – Background
Countries expressed interest in getting experience – but not at cost of IP4 serviceFairly easy to do with dual-stack router and tunnelled IPv6
Native IPv6 needs special hardware for DVBESA/IABG wanted to test IPv6/DVB H/w
Will provide boards and some B/wEC agreed that 6NET could support dissemination to Silk Project
Some B/w if there is an iPv6 workshop
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IPv6 Activities – Overview
Today‘s DVB-S encapsulator use mainly MPE, which does not support IPv6Many satellite links are uni-directional Link-layer multicast not always supportedManagement systems are often proprietary and support only IPv4Other proprietary components (e.g. PEP) do not support IPv6All those are investigated within an ESA IPv6 study
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IPv6 Activities - Key Transition issues
R1 R2
Network 1 Network 2
Serial Int
DVB->IP
Satellite
IPv6 network
IPv6 network
IPv4IPv6
IPv6
DVB demodulator
DVB modulator
SCPC modem
SCPC modem
IP->DVB
Serial Int
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IPv6 Activities – Two basic solutions
Use of IPv6 tunnelingCould be done with existing DVB-S equipmentUse of Ethernet bridging or IPv6 over IPv4 tunnelWill be done by Silk project
Integration of native IPv6Use new DVB-S equipment based on ULEWill be provided to Silk by ESA / IABG
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IPv6 Activities - IPv6 provisions to Silk
Propose to upgrade routers to IPv6Specific 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 cardsESA/IABG provide extra bandwidth
Use for 2 MHz IPv6/DVB common channelUse for 5 x 120 KHz IPv6/SCPC transmit channel
CEC (6NET) will provide extra bandwidthUse for 5 x 64 KHz IPv6/SCPC transmit channel
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IPv6 Activities– Hub Enhancements
IPv4 ENCAP IPv6 ENCAP
CONTENTCACHE
NREN
Silk HUB (DUAL STACK)
NRENROUTER(S)
Silk ROUTER(DUAL STACK)
Silk NETWORK
SCPC
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IPv6 Activities– Remote Site Enhancements
IPv6 DECAP
CONTENTCACHE
NREN
REMOTE SITE (DUAL STACK)
NRENROUTER(S)
IPv4 DECAP
Silk ROUTER(DUAL STACK)
Silk NETWORK
SCPC
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Agenda
Overview of Silk
Current Status
Extending the Silk System
IPv6 over satellite in Silk
The longer Term Perspective
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Longer Term – Future Steps
NATO will probably continue after 7/05But at a reduced rate with declining fundingCo-funding is vital to many others alsoHard to achieve with these countries
Form of Connectivity will become hybridSatellite necessary for some locationsFibre will come into some sites; already looking at terrestrial possibilitiesOther satellites cheaper than this Silk solution – particularly in CaucasusMay have to move hub to sit on single beam
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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 APANPerhaps 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)
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This may not be high science, but it is a fascinating project with very high visibility – and it is fun
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More information - Links
Silk projecthttp://www.silkproject.org
ESA IP over DVB projecthttp://telecom.esa.int/telecom/www/object/index.cfm?fobjectid=11271