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Friday, May 04, 2012

Deep Packet Inspection - up in Canada and UK...

From Milton Mueller's NSF project (nice background story on UK DPI from Wired here):
"The data show that in the U.S., DPI use did not increase after an April 10 2010 court ruling that invalidated the FCC's Comcast decision. Whereas ISPs in the USA, Eastern Europe and Latin America seem to be turning away from DPI-based throttling or blocking, major ISPs in Canada and Great Britain increased its use in 2011 and early 2012. 
Bell Canada increased DPI use in late 2010 and 2011, despite a 2009 CRTC decision regulating Internet Traffic Management Practices and despite a notice to its wholesale customers that its wholesale service "may not be subject"
to such throttling after November 2011. High levels of BitTorrent throttling by Rogers Cable also remained unchanged by the 2009 CRTC regulations. Bell Canada and Rogers were both among the world's top 10 throttlers in 2011 and 2012. Canaca, TekSavvy and Primus also show increases in 2011. Rogers has promised that 50% of its customers would
be free of DPI-based throttling by July 2012 and that they will end it entirely by the end of the year. As of the 1st of March 2012, however, there is no sign of any change.
The UK is another one of the few countries where BitTorrent manipulation appears to be on the rise. DPI measurements for the BT Group in particular increased progressively throughout the 3-year period. Virgin Media seems to have altered its policy and increased DPI-based intervention in the 4th quarter of 2010. The academic network JANET (not shown on the chart) aggressively blocks BitTorrent. 
Taiwan is another country that shows extensive use of DPI-based manipulation of P2P protocols. Taiwan has one or two of the world's top throttlers every year, including its nationwide academic networkSony Network, alone among Taiwan's providers, seems to have reduced or eliminated the practice since late 2009.
The project website, at, contains a list of the world's top throttlers in 2009, 2010, 2011 and the first two months of 2012."

1 comment:

Johnson said...

This blog discuss about Deep Packet Inspection in Up and canada. Thanks for this information.