University Study Takes Comcast to Task
Comcast has already been under fire for how it manages upstream P2P traffic, but the CU researchers claim that the MSO's traffic shaping is now "aimed at any new TCP connection regardless of the application-level protocol."
Based on synthetically generated "traces," the researchers found that Comcast Internet users "may find it extremely difficult to establish new TCP connections while using any application that has a relatively high rate of TCP connection establishment on a Comcast link."
A Comcast spokesman confirmed an earlier report that the CU study findings have nothing to do with the forthcoming "protocol agnostic" system. And the MSO has a few questions for the researchers themselves.
"I can confirm that we have not made any shift in our network management policy yet and have not implemented the protocol agnostic approach that we announced two weeks ago," Comcast spokesman Charlie Douglas said, via email. "At that time, we said we would migrate to this new system before the end of the year. We are currently attempting to contact the PhD students and associate professors at the University of Colorado to better understand their analysis."
According to a posting of the study, the researchers synthetically generated the packets and collected data from "multiple Comcast accounts, all within close geographical proximity."
— Jeff Baumgartner, Site Editor, Cable Digital News