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  • Except for Mongolia - which shows average results - all East Asian countries show good (or acceptable) Internet performance. The trends show that these results are continuing to improve.
    • Results as seen internationally are strongly influenced by the condition of the network within the country.
      • This was confirmed by the step changes seen in performance in 2005/2006 when an Internet Exchange Router was setup connecting the ISPs of Mongolia.
      • Nearly all results are skewed by the performance observed for the last few hops.
  • Improvements (/changes) in the national backbones - as in the case of Mongolia in 2005 - result in step changes in Internet performance.
  • Internet performance is closely tied with Human Development Indices - HDI.
    • This is evident from the strong correlation of these parameters with Internet performance metrics as observed by PingER. In the case of East Asia, Japan, South Korea and Taiwan show good Internet performance results while maintaining high values for HDI. On the other hand, Mongolia shows average (and in some cases below average) Internet performance statistics while maintaining average HDI values.
  • Generally the traffic is routed via optimal links. However, traffic for some destinations are routed indirectly even though shorter paths exist (which are used for traffic in general). This may be attributed to the BGP policies defined by the ISPs.
  • Increase in PingER coverage results in accurate results. This is observed by the increased correlation of PingER results with Human Development Indices over the years 2006 and 2007.

Acknowledgements

We are grateful to all our collaborative partners in East Asia maintaining monitoring nodes which enabled us to conduct this study. The contact persons are Henry Wong (Dept. of Comp. Sci. and Eng., Hong Kong Univ. of Sci. and Tech.), C. S. Hong and Obaid Amin (Kyung Hee University, South Korea), Chen Hesheng (Institute of High Energy Physics Chinese Academy of Sciences, China), Trey (National Center for High Performance Computing, Taiwan), Takashi Ichihara (Institute of Physical and Chemical Research, Japan).