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<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="73b90ccfec155d51-78aee50e-43d64716-956cab69-b677ea5299f33a4eee479d54"><ac:plain-text-body><![CDATA[ | Throughput from SLAC to Regions of the World | Derived Throughput from SLAC to Africa Jan-Aug '09 [[xlsx | ^africa-thru-aug09.xlsx]] | MinRTT from SLAC - Aug. 2009 [[xls | ^map-africa-minrtt-aug2009.xls]] | ]]></ac:plain-text-body></ac:structured-macro> |
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<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="6590b70948e8709c-923ea9d6-48224b5f-9e998f37-ce00e2273dcf4c12726340f7"><ac:plain-text-body><![CDATA[ | Routing from South Africa to African Countries (Sep '05) | Routing from South Africa to African Countries (Aug '09) [[xls | ^routing-africa-aug2009.xls]] | Routing from Burkina Faso to African Countries (Aug '09) [[xls | ^routing-africa-aug2009.xls]] | ]]></ac:plain-text-body></ac:structured-macro> |
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Similar effects (dramatic reduction in RTTs) have also been observed for other sites at countries in Africain south and eastern African countries.
For example on May 19th 2009, www.novagest.co.ao one of 4 sites PinGER monitors in Angola reduced the average RTT from about 750ms to 450ms and became much more stable (less jitter) in the process (see the time series in the figure below). The traceroute goes via Globenet TATA Communications and then to the Angola Telecom IP backbone.
Similarly the average RTTs of both hosts that PingER monitors in Mozambique (www.uem.mz and www.micti.co.mz) dropped from 780ms to about 360 ms in June May 2007.
On the other hand hosts in Namibia (such as www.adsl.com.na seen below) seem to be switching between using a long RTT path from SLAC and a shorter one.
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One host (www.
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aisha.ac.zm) of the 6 monitored in Zambia improved its RTT from about 720ms to 55ms on August 20, 2009 (see below). Also at the time of writing it looks like they are still moving the link over to the terrestrial lines sinced the performance is very unstable (high losses) and big changes in RTT. It is possible the link in one direction is using a GEOS while the other is an all terrestrial link. We believe the terrestrial path goes vai Botswana and Namibia.
Angola: www.novagest.co.ao | Namibia: www.adsl.com.na | Zambia: www.aisha.ac.zm | |||
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| | | co.ao Namibia: www.adsl.com.na | | |
