Download Pavol Horvath - Optical Infrastructure for SANET

PROJECT SANET II
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Pavol Horváth, Marian Ďurkovič, Tibor Weis
SANET
Slovak Academic Network Association
[email protected], [email protected], [email protected]
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PROJECKT SANET II
• Goals of the project
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Adopted by Slovak Government in May 2001
Finance plan for 2001 - 2002: 5.5 mil.EUR
Build up a new country wide optical infrastructure
Connecting all Slovak universities other academic sites
Build up MANs in the 8 main regional centres
International connection to GEANT Network
Upgrade connectivity to INTERNET
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• Organisation of the project
– All decisions are made by Project Steering Committee
reported direct to minister of education of the SR
– We have received a world price for leased FO for the
regional infrastructure
– The Tender was open for alll suppliers for
• Leased Dark fibber lines ( one pair for the long
distance)
• To sell a free duck
• To build up the FO lines for SANET mainly in the
MAN
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• Basic Technology
– Fibre optic infrastructure only
– Technology switched Ethernet
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• Current situation
– First 550 km optical infrastructure - 1Gbps network
Bratislava - Košice ( a main part of Slovak backbone is
working )
– The next 400 km is finalized ( in the next 2-3 months)
– 12 km MAN in Bratislave in the SANET ownership
with the 1Gbps MAN
– The same situation in the Cities Nitra, Kosice
– In the next 2 month will be finalized 1Gbps MAN
network in the other 5 main Cities in the Slovakia
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• Project follow up in the 2003
– Finalization all steps of the country wide optical
infrastructure
– The 10 Gbps switched Ethernet on the MAN in
Bratislava and also in the part of backbone
infrastructure was tested
– Upgrade of international capacity to 355 Mbps
– The new Multimedia application and services
• IP telephony
• IP video - real video from SATELITE ASTRA
• SW free (www.videolan.org)
• Teleconferences
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• SANETII network throughput
measurement
• SANET2 network throughput measurement was done from
16 to 31 July 2002 during full production operation
• we did not use any special part of SANET2 network for
testing
• The distance between Zvolen and Bratislava is 265km.
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• The main goal of our measurement was:
• To verify real capacity of SANET II network
• To find out error rate during high volume data transfer
• To check out limit of used network components
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• How was measured
• 2 Servers Sun Fire V880 with gigabit Ethernet network
cards was used
• These servers were together connected by three ways
• The reason was to get comparative results>
– Local interconnection through L2 switch – both
– Servers were on the same IP network
– Local interconnection through L3 switch – the
servers was on two different IP network
– Remote interconnection through L3 switches – the
servers were in two cities connected to different IP
network
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• The main goal of this measurement
was:
• To verify real capacity of SANET II network between
TU Zvolen and STU Bratislava
• To check out the influence of 3ms delay caused by
265km distance on data transfer
• To check out error rate during high volume data transfer
• All tests and measurements were performed during
working days when average network load measured by
Cisco IOS’s was 8%
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• Summary
Following results:
1. Using bigger TCP window, as is default set up in
Solaris9, the delay caused by distance is negligible.
2. During high volume data transfer with average network
load above 80% the error rate is still zero.
3. Network technology – switched gigabit Ethernet is
suitable also for long distance
4. Network architecture where all backbone routers are
connected to one VLAN allows us to transfer data on
L2 level.
5. SANET II network is able to provide with real end-toend network capacity up to 895Mbps in real operation
to its users.
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