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Probably the most dynamic way to show the effects is to use the PingER Metrics Motion Charts for the regions most badly affected: Middle East, South Asia and Africa (Egypt and Libya). These show the variation of multiple metrics as a function of time. To assist in this we have captured the charts for 21 days starting December 14th 2008. The charts for the three regions are shown below. To view them, for example, click on the Africa thumbnail, then click on the right arrow to play the data. After viewing this, select the size metric (by default to be Population (#)) to be Packet Loss (%). Under Select choose the country of interest to be trailed (e.g. Egypt), then click on the arrow to playback the performance of the throughput, the average RTT and packet loss all the while trailing the bubble for India. Note the dramatic change in increase of loss (bubble size), and average RTT starting on December 19th, and the recovery after December 22nd. The effect is more dramatic if one chooses a log scale for the x axis Packet Loss (%).
Africa | Middle East | South Asia |
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- Information on Submarine Communications
- 2008 Submarine Cable Disruption from Wikipedia.
- Mediterranean Fibre Cable Cut: A RIPE NCC Analysis, February 2008
- Mother Earth Mother Board, Neal Stephenson, Wired, all about the laying of the longest underwater telephony cable in history. Stephenson goes into a lot of details as to how the cable is laid, what happens to the cable when it reaches shore, what is the cable made of, how does it work, how it is repaired etc.
- From Harvey Newman, Caltech:;
Wiki Markup Interestingly, however, the current (Nov. 2008) issue of the newsletter \[Submarine Telecoms Forum\], in addition to an article on the use of subsea cables for monitoring compliance to the International Nuclear Test Ban Treaty, features a story on _Navy Undersea Cable Systems_ on Page 34. The entire issue can be found here:[http://www.subtelforum.com/issues/WFN_41.pdf].Also give a look at the cable ship sighting section on Page 54 where you'll find _A Global Guide to the Latest Known Locations of the World's Cable Ships_ as of May 2008, as provided by Lloyds List.And for those interested in how subsea cables are upgraded to higher throughput rates, see Same Pipes, Faster Speed, by Andy Lumsden on p. 38.