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The problem for broadband operators is the protocol eats up huge amounts of bandwidth. To keep their networks moving smoothly, operators have installed equipment from companies such as Sandvine and Ellacoya that inspects packets to identify the type of application being used. Based on policies established by the provider, the traffic can be blocked or limited.
Earlier this year, bloggers noted that BitTorrent sessions appeared to be targeted and blocked by Comcast's service. Comcast repeatedly denied these claims. The Associated Press did its own test and reported last month that several Comcast broadband connections using BitTorrent had been slowed or blocked.
The SavetheInternet.com coalition, along with professors from Yale, Harvard, and Stanford law schools, have filed a complaint and petition with the FCC against Comcast asking the agency to take immediate action to stop Comcast's practices.
Comcast still denies claims that it is blocking any traffic. "Comcast does not, has not, and will not block any Web sites or online applications, including peer-to-peer services, and no one has demonstrated otherwise," David L. Cohen, executive vice president for Comcast, said in a statement. "We engage in reasonable network management to provide all of our customers with a good Internet experience, and we do so consistently with FCC policy."
A Comcast representative said when it detects congestion in the network due to peer-to-peer traffic such as BitTorrent, it slows down that traffic in the network to make room for other kinds of traffic like Web surfing. The management mechanism is only used for the BitTorrent or other peer-to-peer traffic that is causing the congestion.
But in its filings, the SavetheInternet.com Coalition contends that the way in which Comcast manages its network deceives consumers and also violates the open-access principles outlined by the FCC.
Specifically, the group claims that Comcast is using a technique called "spoofing" to slow down or block the BitTorrent traffic. The way it works is that after a BitTorrent session has been established, Comcast interrupts the session like an operator interrupting a phone call who informs both parties that the connection has been disconnected. But instead of breaking into the connection as Comcast, the company pretends to be a customer participating in the BitTorrent session who is simply ending the session.
Net neutrality supporters say neither Comcast nor any other service provider should selectively limit any particular type of traffic. "No one is suggesting that there is no room for bandwidth management," Wu said. "But right now the operators can pick and choose the applications they want on their networks."
Simple quality-of-service networking technologies that limit the amount of bandwidth that each individual user gets could be the answer to this problem, say experts. But Wu believes the issue is not really about bandwidth management. It's about who controls the Internet.
"The whole Net neutrality issue is really about a power struggle," he said. "It all comes down to a scenario where the phone companies and cable operators want to call all the shots about which applications enter the market. And while that may be good for them, I'd argue it's very bad for the country."
See more CNET content tagged:
Net Neutrality, Comcast Corp., cable company, supporter, Barack Obama






- WTF! Thanks to Comcast . . .
- by criticny December 1, 2007 12:26 AM PST
- The headlines for this article are so biased, I won't even bother to read it. <br /><br />Who decided to attribute Comcast's recent bad behavior to a P2P app that's been around for years? Pheh. Pteui. Ach. <br /><br />As for "Eating up bandwidth . . .", not even worth commenting on.
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