Download - Internet2 – Spring Meeting
Internet2 – Spring Meeting
“INTERNET TWO – Is It The Future of GDLN?“
Dr. Vili BrajovicGlobal Communications Manager
HIGH SPEED GLOBAL CONNECTIVITY: BRIDGING DISTANCE AND TIME
• High-speed, reliable network of regional satellites and fiber
• A network of 3 satellites serves the Bank’s offices in Africa, Asia, Europe, Latin
America and the Caribbean, and the Middle East
• Voice, data, video, fax, Internet and Intranet access to 114 Bank Offices and 24
Distance Learning Centers 1
24 GDLN CENTERS CONNECTED TO THE BANK’S NETWORK
• Managing public expenditure
• Judicial reform
• E-commerce, e-government
• Hospital management
• Indigenous profiles
• Municipal management
• Intellectual property rights
• Agricultural technology and productivity
• Child protection
• Citizen participation in national policy dialogue
• Anti-corruption and transparency
• Disaster management
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1500
3600
5500
7500 7800
20000
0
5000
10000
15000
20000
25000
1998 1999 2000 2001 2002 2003
Offering
Demand
NUMBER OF VC SESSIONS PER YEAR
BANK’S GLOBAL NETWORK VIDEOCONFERENCING GROWTH
3
18
35
52
62
72
136
0
20
40
60
80
100
120
140
160
1998 1999 2000 2001 2002 2003
FY
Sa
telli
te B
an
dw
idth
(M
hz
)
Capacity
Demand
BANK’S GLOBAL NETWORK BANDWIDTH GROWTH
SATELLITE CAPACITY VERSUS DEMAND
4
BANK’S GLOBAL NETWORK INDORMATION CAPACITY GROWTH
5
INFORMATION CAPACITY PER FIELD OFFICE
64 64
192 192 192
256
384 384
768
0
100
200
300
400
500
600
700
800
900
1995 1996 1997 1998 1999 2000 2001 2002 2003
FISCAL YEAR
Lin
k S
peed
(K
BP
S)
BANK’S GLOBAL NETWORK UNIT COST
6
$141
$44 $44 $44$35
$26 $26
$12
$0
$20
$40
$60
$80
$100
$120
$140
$160
1996 1997 1998 1999 2000 2001 2002 2003
FISCAL YEAR
KB
PS
UNIT COST OVER THE BANK’S NETWORK
• High-level service quality (99.8% availability)
• Low monthly operational costs (<$4k/month)
• Local presence for operation and maintenance
(<24h repair time)
GDLN GLOBAL NETWORK SERVICE REQUIREMENTS
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• Originaly Designed For Data Only
• 32bit IP Addresses (cca 4 billion addresses)
• Security Solutions Application Based
• Quality-of-Service (QoS) Only Implemented on Dedicated Routes
• Existing
• Designed For Multimedia Applications (Voice, Video, Data)
• 128bit IP Address (cca 340 trillion trillion trillion addresses)
• Built-in Security Solution
• Built-in Quality-of-Service Network Wide
• Slowly Emerging
INTERNET ONE VERSUS INTERNET TWO
INTERNET ONE IPv4
INTERNET TWO IPv6
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CURRENT INTERNET TWO IMPLEMENTATIONS
• Private Corporate Networks
• Limited Commercial Offerings On Dedicated Routes (In USA Sprint Provides Limited Service Beween Some Cities)
• In Europe Some Universities Have implemented Internet Two at
Their Campuses
• The World Bank Has Implemented Internet Two Over It’s Global Network
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GDLN/BANK’S GLOBAL NETWORK STRUCTURE PRIOR TO SEPTEMBER 2002
EASTERN EUROPE REGION
FIBER OPTIC LINE (DS3)
SATELLITE CONNECTIVITY
ASIA REGIONS
SATE
LLIT
E CO
NNEC
TIVI
TY
SATELLITE CONNECTIVITY
AUSTRALIATELEPORT
AFRICA, LATIN AMERICA AND MIDDLE EAST REGIONS
342 Degrees INTELSAT Satellite
(GLOBAL BEAM)
ORION 3 Satellite
64 Degrees INTELSAT Satellite
(Hemi Beam)
HEADQUARTERS
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EASTERN EUROPE REGION
FIBER OPTIC LINE (2xDS3)
SATELLITE CONNECTIVITY
ASIA REGIONS
SATELLITE CONNECTIVITY
SATELLITE CONNECTIVITY
GERMAN TELEPORT
AFRICA, LATIN AMERICA AND MIDDLE EAST REGIONS
342 Degrees INTELSAT Satellite
(HEMI BEAMS)
ORION 3 Satellite
64 Degrees INTELSAT Satellite
(Hemi Beam)
HEADQUARTERS
GDLN/BANK’S GLOBAL NETWORK STRUCTURE AFTER SEPTEMBER 2002
11
BENEFITS FROM TELEPORT RELOCATION
• Better prime-time working hours overlap
• Reduced overall latency for 300msec
• Reduced fiber backbone costs
• Reduced satellite bandwidth costs
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(Dedicated Links)PAMA
(Virtual DAMA Links)DAMA
HEADQUARTERS
(Virtual DAMA Voice, Video and Data IP Channels)IP Over Asymmetrical SCPC
• INTELSAT’S DAMA• NORTEL-DASA TDM/TDMA/FR
FO FO FO FOFO
FO
FOFODLCFO
FOFO
HEADQUARTERS
HEADQUARTERS
GDLN/BANK’S GLOBAL NETWORK EVOLUTION STRATEGY
GOVERNMANT DLC
INTERNET
ISDN
DLC
13
IP SERVICES WITH GUARANTEED QOS
• QOS implemented on fragmented high utilized links supporting 768kbps
• QOS provides bandwidth and jitter guaranties
• QOS is based on end-to-end “diffserv” model
14
QOS IMPLEMENTATION: CISCO LLQ
Voice
Data
Video
WFQ
Class.&
Mark
Police
CBWFQ
LLQ
15
PQ
PQ - Priority QueueWFQ - Weighted Fair Queue CBWFQ - Class Based Weighted Fair QueueLLQ – Low Latency Queue
IP VOICE (VoIP)
Toll bypass approach:• Keep existing telephones and PBXs• Use VoIP to provide connectivity between the PBXs
VoIP based on G.729 codec:• 8kbit/s CS-ACELP codex• Excellent voice quality • MOS 3.92 (compare to MOS 4.1 for G.711/pcm)
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VOICE HEADER COMPRESSION
• VoIP is based on 8Kbps algorithm, which with overhead requires
26.4Kbps IP channel (40 bytes IP/UDP/RTP header)
• When RTP header compression (RFC2508) is used, for the same algorithm only 11.2Kbps IP channel is needed
(40 bytes of IP/UDP/RTP reduced to 2–4 bytes)
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IP VIDEO
• Room based videoconferencing systems
• H.323 based videoconferencing
• 256Kbit/s per call
• G.711 for audio (64Kbits/s)
• H.261 for video (~180 Kbit/s)
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ASYMETRICAL SCPC SATELLITE CHANNELS
• 10 SCPC 768Kbps satellite channels combined into A single sub-group
• Each sub-group is served by a single 8Mbps outgoing channel and eight 768Kbps return channels
• Asymmetrical solution provides an excellent bandwidth utilization
• One single 256Kbps outgoing video stream is used to feed all eight nodes during multi-point video session
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IP MIGRATION BENEFITS
• Single communications pipe for voice,data and video
• Low operation and management costs
• Low communications equipment complexity (only router)
• Easy integration with local area networks (desk-top video)
• Improved quality of all services
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IP MIGRATION BENEFITS(continued)
• Simple re-engineering for future growth
• Automated videoconference scheduling
• Automated dynamic service interchange
• Full compatibility with Internet
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Traffic Costs for Wide Area Networks
$ 0
$ 100
$ 200
$ 300
$ 400
$ 500
$ 600
WB SGE TN7 88T Peer KIU E7X
Dol
lars
per
Gbp
s
Gartner Measurement
World BankManagement Presentation
BENCHMARKING THE BANK’S GLOBAL NETWORK WITH OTHER COOPERATE PRIVATE NETWORKS
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