SANET-2 From leased lines to dark fibres

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SANET-2 From leased lines to dark fibres

• Pavol Horváth, Marian Durkovic, Tibor Weis
• SANET - Slovak Academic Network Association

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Why SANET-2
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Optical Network SANET II

• Project financed by Slovak Government
• Budget for 2001- 2003 7 MEUR (280 mil. Sk)
• Utilization of new Technologies
• Main Goalbandwith upgrade into gigabit range
• Transition to optical infrastructure

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The Aims of SANET II

• Gigabit access for all Slovak Universities and
  Research Institutes of SAV
• Establish MANs in Regional Centres (8)
• International Connections to
• GEANT
• Neighbor countries
• Internet

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• Other Aspects

• Organization of Project
• Management of the Project by Steering Committee
  named by Minister of Education
• Tendering Process, and Evaluation of Offers
• Success by call for Offers for Optical Cables
• Proposed Technology
• Infrastructure based on the Optical Cables only
• Technology of the switched Ethernet

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Project Realization

• Leasing of Dark Fibre
• Common Investment in MANs and Access Networks
• Investment into SANET own Optical Cables
• Ethernet Switches owned by SANET

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Infrastructure tender

• RFP out in mid-2001
• Complete national backkbone
• Long-term relationship (10 years)
• Only optical solutions allowed (dark fibre,
  lambda)
• Offers received from alternative suppliers
• Tender ignored by incumbent (Slovak Telecom)

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Current Status - 2004

• IRU-like contracts for 1660 km of dark fibre with
  3 suppliers
• cca 40 km Optical Cables owned by SANET in MANs -
  8 Regional Centres
• Backbone Gigabit Ethernet
• - partially CWDM 4 x GE
• - testing of 10GE

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External Connections

• Regional Peerings
• - SIX 1Gbps
• - ACONETVIX 1Gbps
• - CESNETNIX 1Gbps
• - Pionier 1 Gbps planned this year
• Internet transit
• - Commodity Traffic 300 Mbps
• - GEANT 200 Mbps

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Backbone Configuration

• All links L2 802.1Q trunks
• Admin VLAN separate from production traffic
• Northern and southern section no spanning tree!
• All links up

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Node Configuration

• Cisco Catalyst 6509
• 18 x GE
• 48 x 100Base-T
• redundant power supplies
• UPS with ethernet interface

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Signal Regeneration

• Cisco Catalyst 3500
• 2 x GE CWDM GBIC
• 24 x 100Base-T
• converter from 48 V DC
• 110 km typical distance
• 1 RU space required

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Routing Policy

• Bandwidth not an issue
• Only RTT matters
• Metrics set to exact measured fibre length in km
  gt kilometric
• Traffic always uses shortest path

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MAN example
Optical network infrastrukture in Košice
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Cross-border connections

• Dark fibre available - no international line
  pricing
• Significantly lower RTTs, as these copy roads not
  airlines
• Connection to exchange points in neighbour
  countries
• Much better access to ALL resources

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Traffic via C-B-C
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Conclusion

• SANET II in production state, all universities
  connected
• Equal gigabit access for all universities
• Ethernet technology everywhere
• LAN services available in MAN/WAN enviroment
• Simple upgrade to N x GE or 10 GE

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• Time for your questions