Shaun Fensom - Digital Exchanges

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Shaun Fensom's presentation at the INCA Seminar 30/10/2013, explaining the concept and development of Digital Exchanges

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Shaun Fensom - Digital Exchanges

  1. 1. Digital Exchanges
  2. 2. Aggregation point To overcome path dependencies
  3. 3. Path dependence explains how the set of decisions one faces for any given circumstance is limited by the decisions one has made in the past, even though past circumstances may no longer be relevant. Positive feedback mechanisms like bandwagon and network effects are at the origin of path-dependence.
  4. 4. A B C
  5. 5. Three path dependencies Bandwidth aggregation for end users Clustering of digital business Backhaul and hosting for access networks
  6. 6. Components Space for businesses Internal connectivity Internet connectivity Hosting space Mutual governance 6
  7. 7. Another DX Hosting Remote IXP Nearest IXP DX Local access network Local users in DX Local access network
  8. 8. 8
  9. 9. Bandwidth aggregation Reduce cost of high quality access
  10. 10. Nearest IXP DX Local users in DX
  11. 11. Simple aggregation • High-speed connection to IXP – Cost shared using DX organisation – Users access via internal network – Could use vouchers • Simple rationale – 10 x bandwidth, 2 x cost • Layer 2 (or WDM) – Allowing multiple ISPs – Shared “ownership” of connection 11
  12. 12. Another DX Nearest IXP Remote IXP DF Hosting Local users in DX DX Carrier PoP
  13. 13. Clustering digital business Creating a virtuous circle
  14. 14. 14
  15. 15. Attractive space Good, flexible terms Sense of shared ownership High quality connectivity Flexible hosting Choice of service providers
  16. 16. Backhaul aggregation Carrier neutral centre for new access networks
  17. 17. End users End users
  18. 18. Tier 1 ISP Tier 1 ISP Tier 1 ISP Transit Transit ISP IXP ISP Peering End users
  19. 19. Another DX Hosting Remote IXP Nearest IXP DX Local access network Local users in DX Local access network
  20. 20. Access network Backhaul Hub Independent Open access Mutual ownership
  21. 21. Thank you s.fensom@broadband.coop

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