Tuesday, January 29, 2013

Connectivity remains slow and variable

A colleague in Cuba ran traceroute from a computer on a dial up link in Havana to several destinations in Cuba, Venezuela and the US. The following table shows the round trip latency time for three tests to each destination:
As you see, the international connections are very slow. It would be difficult, if not impossible, to use a modern Web site at any of those locations. Only the third test on the last line (to the US) seems to be using the ALBA-1 cable one-way.

Not only are the times slow, the variance to the same location is very high. Consider again the last line -- three tests resulted in three very different times. Even the variance within Cuba is high.

I cannot explain this -- some may be due to problems with my colleague's computer or Internet connection -- but hopefully we will see improvement soon.

If others run tests from Cuba and get different results, let us know (in confidence).
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