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A Survey of ISPs in Taiwan for applying HD-Ratio to IPv4

This survey conducted by TWNIC aims to gather opinions and obstacles in approaching 80% utilization of IPv4 addresses. The results provide valuable insights for the AP community and introduce the concept of HD-Ratio to ISPs in Taiwan.

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A Survey of ISPs in Taiwan for applying HD-Ratio to IPv4

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  1. A Survey of ISPs in Taiwan for applying HD-Ratio to IPv4 David Chen, Senior Engineer Taiwan Network Information Center, IP department David@twnic.net.tw 24th, Feb 2005

  2. Outline • Survey Scheme • Questionnaire • Statistics • Summary

  3. Survey Scheme • Original motivation • TWNIC 3rd OPM Address SIG concluded to conduct HD-Ratio for IPv4 survey in Taiwan • To be a reference for AP community • Purposes • To introduce HD-Ratio to all ISPs • To know the obstacle of approaching 80% • To gather opinions • Project period • - 2005/01/5 – 2005/01/31

  4. Survey Scheme (Cont.) • Delivered via E-mail • Received from Fax or E-mail • Target • TWNIC’s member (55) • APNIC’s member in Taiwan (2) • Return 61.4% valid questionnaires (35) • from ISPs

  5. Questionnaire structure • ISPs background Information • Elaboration of Survey • Introduction of HD-Ratio • Currentutilization=80% • What is HD-Ratio? • How to calculate by HD-Ratio? • Questions

  6. Questions • Update background information - contact detail • How many POPs are running in your company? • What kind of services are you providing using static IP? • What are the factors that one ISP’s IP utilization can’t reach 80% but need IP immediately? • What kind of factors would be considered when IP address space is going to sub-divide? What is their priority?

  7. Questions (Cont.) • Does the static IP address allocation affect the utilization achievement? • What kind of management types did you implement when IP address shortage happened? • Would HD-Ratio affect your company to request IPv4 address? • What kind of calculating method does your company prefer?

  8. TW ISP IP address distribution

  9. Statistics result – prefer calculating method

  10. Prefer calculating method grouped by IP

  11. Prefer calculating method grouped by POP

  12. Reason of Difficulties for 80% (grouped by IP)

  13. Reason of difficulties for 80% (grouped by POP)

  14. Sub-divide address space - priority

  15. IP fragment Occurrence

  16. Address block fragment Occurrence Marketing 39% Occurrence 50% No Occurrence 50% Administration Management 8% Equipment limit 3%

  17. Summary • Services, customers and POPs affect achieving 80% • Services and customers are considered as major factors in IP administrative management • Marketing change and administrative management would occur address block fragment • Over 50% ISPs support to change utilization, but there are still 43% ISPs want to keep original • Prefer to HD-Ratio：more IP address holder and more POP establisher • We think HD-ratio to IPv4 is positive for some ISPs, but it still need to gather more consensus in Taiwan

  18. Thank You http://www.twnic.net.tw

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